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Posted to issues@nifi.apache.org by olegz <gi...@git.apache.org> on 2016/10/07 15:38:40 UTC
[GitHub] nifi pull request #1116: NIFI-2851 initial comit of perf improvements on Spl...
GitHub user olegz opened a pull request:
https://github.com/apache/nifi/pull/1116
NIFI-2851 initial comit of perf improvements on SplitText
Thank you for submitting a contribution to Apache NiFi.
In order to streamline the review of the contribution we ask you
to ensure the following steps have been taken:
### For all changes:
- [ ] Is there a JIRA ticket associated with this PR? Is it referenced
in the commit message?
- [ ] Does your PR title start with NIFI-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character.
- [ ] Has your PR been rebased against the latest commit within the target branch (typically master)?
- [ ] Is your initial contribution a single, squashed commit?
### For code changes:
- [ ] Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder?
- [ ] Have you written or updated unit tests to verify your changes?
- [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the LICENSE file, including the main LICENSE file under nifi-assembly?
- [ ] If applicable, have you updated the NOTICE file, including the main NOTICE file found under nifi-assembly?
- [ ] If adding new Properties, have you added .displayName in addition to .name (programmatic access) for each of the new properties?
### For documentation related changes:
- [ ] Have you ensured that format looks appropriate for the output in which it is rendered?
### Note:
Please ensure that once the PR is submitted, you check travis-ci for build issues and submit an update to your PR as soon as possible.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/olegz/nifi NIFI-2851
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi/pull/1116.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1116
----
commit 0818d8689cb474bb1ad81dcd672cb0e31078825e
Author: Oleg Zhurakousky <ol...@suitcase.io>
Date: 2016-10-07T15:37:32Z
NIFI-2851 initial comit of perf improvements on SplitText
----
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260752
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
}
-
- session.transfer(flowFile, REL_ORIGINAL);
- session.transfer(splits, REL_SPLITS);
}
- private void finishFragmentAttributes(final ProcessSession session, final FlowFile source, final List<FlowFile> splits) {
- final String originalFilename = source.getAttribute(CoreAttributes.FILENAME.key());
-
- final String fragmentId = UUID.randomUUID().toString();
- final ArrayList<FlowFile> newList = new ArrayList<>(splits);
- splits.clear();
- for (int i = 1; i <= newList.size(); i++) {
- FlowFile ff = newList.get(i - 1);
- final Map<String, String> attributes = new HashMap<>();
- attributes.put(FRAGMENT_ID, fragmentId);
- attributes.put(FRAGMENT_INDEX, String.valueOf(i));
- attributes.put(FRAGMENT_COUNT, String.valueOf(newList.size()));
- attributes.put(SEGMENT_ORIGINAL_FILENAME, originalFilename);
- FlowFile newFF = session.putAllAttributes(ff, attributes);
- splits.add(newFF);
- }
+ /**
+ *
+ */
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>();
+ boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
+ && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
+ results.add(new ValidationResult.Builder().subject("Maximum Fragment Size").valid(!invalidState)
+ .explanation("Property must be specified when Line Split Count is 0").build());
+ return results;
}
- private static class SplitInfo {
-
- public long offsetBytes;
- public long lengthBytes;
- public long lengthLines;
- public long bufferedBytes;
- public boolean endOfStream;
-
- public SplitInfo() {
- this.offsetBytes = 0L;
- this.lengthBytes = 0L;
- this.lengthLines = 0L;
- this.bufferedBytes = 0L;
- this.endOfStream = false;
- }
+ /**
+ *
+ */
+ @Override
+ protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return Collections.unmodifiableList(properties);
--- End diff --
Since we already have a List<PropertyDescriptor> as a member variable, why not just make the member variable an unmodifiable list and return that instead of creating a new one each time?
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83263078
--- Diff: nifi-commons/nifi-utils/src/main/java/org/apache/nifi/stream/io/util/TextLineDemarcator.java ---
@@ -0,0 +1,227 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.stream.io.util;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Implementation of demarcator of text lines in the provided
+ * {@link InputStream}. It works similar to the {@link BufferedReader} and its
+ * {@link BufferedReader#readLine()} methods except that it does not create a
+ * String representing the text line and instead returns the offset info for the
+ * computed text line. See {@link #nextOffsetInfo()} and
+ * {@link #nextOffsetInfo(byte[])} for more details.
+ * <p>
+ * This class is NOT thread-safe.
+ * </p>
+ */
+public class TextLineDemarcator {
+
+ private final static int INIT_BUFFER_SIZE = 8192;
+
+ private final InputStream is;
+
+ private final int initialBufferSize;
+
+ private byte[] buffer;
+
+ private int index;
+
+ private int mark;
+
+ private long offset;
+
+ private int bufferLength;
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and default buffer size.
+ */
+ public TextLineDemarcator(InputStream is) {
+ this(is, INIT_BUFFER_SIZE);
+ }
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and initial buffer size.
+ */
+ public TextLineDemarcator(InputStream is, int initialBufferSize) {
+ if (is == null) {
+ throw new IllegalArgumentException("'is' must not be null.");
+ }
+ if (initialBufferSize < 1) {
+ throw new IllegalArgumentException("'initialBufferSize' must be > 0.");
+ }
+ this.is = is;
+ this.initialBufferSize = initialBufferSize;
+ this.buffer = new byte[initialBufferSize];
+ }
+
+ /**
+ * Will compute the next <i>offset info</i> for a
+ * text line (line terminated by either '\r', '\n' or '\r\n').
+ * <br>
+ * The <i>offset info</i> computed and returned as <code>long[]</code> consisting of
+ * 4 elements <code>{startOffset, length, crlfLength, startsWithMatch}</code>.
+ * <ul>
+ * <li><i>startOffset</i> - the offset in the overall stream which represents the beginning of the text line</li>
+ * <li><i>length</i> - length of the text line including CRLF characters</li>
+ * <li><i>crlfLength</i> - the length of the CRLF. Could be either 1 (if line ends with '\n' or '\r')
+ * or 2 (if line ends with '\r\n').</li>
+ * <li><i>startsWithMatch</i> - value is always 1. See {@link #nextOffsetInfo(byte[])} for more info.</li>
+ * </ul>
+ *
+ * @return offset info as <code>long[]</code>
+ */
+ public long[] nextOffsetInfo() {
+ return this.nextOffsetInfo(null);
+ }
+
+ /**
+ * Will compute the next <i>offset info</i> for a
+ * text line (line terminated by either '\r', '\n' or '\r\n').
+ * <br>
+ * The <i>offset info</i> computed and returned as <code>long[]</code> consisting of
+ * 4 elements <code>{startOffset, length, crlfLength, startsWithMatch}</code>.
+ * <ul>
+ * <li><i>startOffset</i> - the offset in the overall stream which represents the beginning of the text line</li>
+ * <li><i>length</i> - length of the text line including CRLF characters</li>
+ * <li><i>crlfLength</i> - the length of the CRLF. Could be either 1 (if line ends with '\n' or '\r')
+ * or 2 (if line ends with '\r\n').</li>
+ * <li><i>startsWithMatch</i> - value is always 1 unless 'startsWith' is provided. If 'startsWith' is provided it will
+ * be compared to the computed text line and if matches the value
+ * will remain 1 otherwise it will be set to 0. </li>
+ * </ul>
+ * @param startsWith - bytes
+ * @return offset info as <code>long[]</code>
+ */
+ public long[] nextOffsetInfo(byte[] startsWith) {
+ long[] offsetInfo = null;
+ int lineLength = 0;
+ byte[] token = null;
+ lineLoop:
+ while (this.bufferLength != -1) {
+ if (this.index >= this.bufferLength) {
+ this.fill();
+ }
+ if (this.bufferLength != -1) {
+ int i;
+ byte byteVal;
+ for (i = this.index; i < this.bufferLength; i++) {
+ byteVal = this.buffer[i];
+ lineLength++;
+ int crlfLength = isEol(byteVal, i);
+ if (crlfLength > 0) {
+ i += crlfLength;
+ if (crlfLength == 2) {
+ lineLength++;
+ }
+ offsetInfo = new long[] { this.offset, lineLength, crlfLength, 1 };
+ if (startsWith != null) {
+ token = this.extractDataToken(lineLength);
+ }
+ this.index = i;
+ this.mark = this.index;
+ break lineLoop;
+ }
+ }
+ this.index = i;
+ }
+ }
+ // EOF where last char(s) are not CRLF.
+ if (lineLength > 0 && offsetInfo == null) {
+ offsetInfo = new long[] { this.offset, lineLength, 0, 1 };
+ if (startsWith != null) {
+ token = this.extractDataToken(lineLength);
+ }
+ }
+ this.offset += lineLength;
+
+ // checks if the new line starts with 'startsWith' chars
+ if (startsWith != null) {
+ for (int i = 0; i < startsWith.length; i++) {
+ byte sB = startsWith[i];
+ if (token != null && sB != token[i]) {
+ offsetInfo[3] = 0;
+ break;
+ }
+ }
+ }
+ return offsetInfo;
+ }
+
+ /**
+ *
+ */
+ private int isEol(byte currentByte, int currentIndex) {
+ int crlfLength = 0;
+ if (currentByte == '\n') {
+ crlfLength = 1;
+ } else if (currentByte == '\r') {
+ if ((currentIndex + 1) >= this.bufferLength) {
+ this.index = currentIndex + 1;
+ this.fill();
+ }
+ currentByte = this.buffer[currentIndex + 1];
+ crlfLength = currentByte == '\n' ? 2 : 1;
+ }
+ return crlfLength;
+ }
+
+ /**
+ *
+ */
+ private byte[] extractDataToken(int length) {
+ byte[] data = null;
+ if (length > 0) {
+ data = new byte[length];
+ System.arraycopy(this.buffer, this.mark, data, 0, data.length);
+ }
+ return data;
+ }
+
+ /**
+ * Will fill the current buffer from current 'index' position, expanding it
+ * and or shuffling it if necessary
+ */
+ private void fill() {
+ if (this.index >= this.buffer.length) {
+ if (this.mark == 0) { // expand
+ byte[] newBuff = new byte[this.buffer.length + this.initialBufferSize];
+ System.arraycopy(this.buffer, 0, newBuff, 0, this.buffer.length);
+ this.buffer = newBuff;
+ } else { // shuffle
+ int length = this.index - this.mark;
+ System.arraycopy(this.buffer, this.mark, this.buffer, 0, length);
+ this.index = length;
+ this.mark = 0;
--- End diff --
I believe this.bufferLength should be set to length here, no? This is the same bug that was found recently in StreamDemarcator.
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by olegz <gi...@git.apache.org>.
Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83643595
--- Diff: nifi-commons/nifi-utils/src/main/java/org/apache/nifi/stream/io/util/TextLineDemarcator.java ---
@@ -0,0 +1,227 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.stream.io.util;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Implementation of demarcator of text lines in the provided
+ * {@link InputStream}. It works similar to the {@link BufferedReader} and its
+ * {@link BufferedReader#readLine()} methods except that it does not create a
+ * String representing the text line and instead returns the offset info for the
+ * computed text line. See {@link #nextOffsetInfo()} and
+ * {@link #nextOffsetInfo(byte[])} for more details.
+ * <p>
+ * This class is NOT thread-safe.
+ * </p>
+ */
+public class TextLineDemarcator {
+
+ private final static int INIT_BUFFER_SIZE = 8192;
+
+ private final InputStream is;
+
+ private final int initialBufferSize;
+
+ private byte[] buffer;
+
+ private int index;
+
+ private int mark;
+
+ private long offset;
+
+ private int bufferLength;
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and default buffer size.
+ */
+ public TextLineDemarcator(InputStream is) {
+ this(is, INIT_BUFFER_SIZE);
+ }
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and initial buffer size.
+ */
+ public TextLineDemarcator(InputStream is, int initialBufferSize) {
+ if (is == null) {
+ throw new IllegalArgumentException("'is' must not be null.");
+ }
+ if (initialBufferSize < 1) {
+ throw new IllegalArgumentException("'initialBufferSize' must be > 0.");
+ }
+ this.is = is;
+ this.initialBufferSize = initialBufferSize;
+ this.buffer = new byte[initialBufferSize];
+ }
+
+ /**
+ * Will compute the next <i>offset info</i> for a
+ * text line (line terminated by either '\r', '\n' or '\r\n').
+ * <br>
+ * The <i>offset info</i> computed and returned as <code>long[]</code> consisting of
+ * 4 elements <code>{startOffset, length, crlfLength, startsWithMatch}</code>.
+ * <ul>
+ * <li><i>startOffset</i> - the offset in the overall stream which represents the beginning of the text line</li>
+ * <li><i>length</i> - length of the text line including CRLF characters</li>
+ * <li><i>crlfLength</i> - the length of the CRLF. Could be either 1 (if line ends with '\n' or '\r')
+ * or 2 (if line ends with '\r\n').</li>
+ * <li><i>startsWithMatch</i> - value is always 1. See {@link #nextOffsetInfo(byte[])} for more info.</li>
+ * </ul>
+ *
+ * @return offset info as <code>long[]</code>
+ */
+ public long[] nextOffsetInfo() {
--- End diff --
Yes, it would be easier to read, but based on running some performance tests there is also a price to pay for it although not very significant. Will change
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83261038
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
}
-
- session.transfer(flowFile, REL_ORIGINAL);
- session.transfer(splits, REL_SPLITS);
}
- private void finishFragmentAttributes(final ProcessSession session, final FlowFile source, final List<FlowFile> splits) {
- final String originalFilename = source.getAttribute(CoreAttributes.FILENAME.key());
-
- final String fragmentId = UUID.randomUUID().toString();
- final ArrayList<FlowFile> newList = new ArrayList<>(splits);
- splits.clear();
- for (int i = 1; i <= newList.size(); i++) {
- FlowFile ff = newList.get(i - 1);
- final Map<String, String> attributes = new HashMap<>();
- attributes.put(FRAGMENT_ID, fragmentId);
- attributes.put(FRAGMENT_INDEX, String.valueOf(i));
- attributes.put(FRAGMENT_COUNT, String.valueOf(newList.size()));
- attributes.put(SEGMENT_ORIGINAL_FILENAME, originalFilename);
- FlowFile newFF = session.putAllAttributes(ff, attributes);
- splits.add(newFF);
- }
+ /**
+ *
+ */
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>();
+ boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
+ && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
+ results.add(new ValidationResult.Builder().subject("Maximum Fragment Size").valid(!invalidState)
+ .explanation("Property must be specified when Line Split Count is 0").build());
+ return results;
}
- private static class SplitInfo {
-
- public long offsetBytes;
- public long lengthBytes;
- public long lengthLines;
- public long bufferedBytes;
- public boolean endOfStream;
-
- public SplitInfo() {
- this.offsetBytes = 0L;
- this.lengthBytes = 0L;
- this.lengthLines = 0L;
- this.bufferedBytes = 0L;
- this.endOfStream = false;
- }
+ /**
+ *
+ */
+ @Override
+ protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return Collections.unmodifiableList(properties);
}
- public static class EndOfLineBuffer {
- private static final byte CARRIAGE_RETURN = (byte) '\r';
- private static final byte NEWLINE = (byte) '\n';
-
- private final BitSet buffer = new BitSet();
- private int index = 0;
-
- public void clear() {
- index = 0;
- }
-
- public void addEndOfLine(final boolean carriageReturn, final boolean newLine) {
- buffer.set(index++, carriageReturn);
- buffer.set(index++, newLine);
- }
-
- private void drainTo(final OutputStream out) throws IOException {
- for (int i = 0; i < index; i += 2) {
- final boolean cr = buffer.get(i);
- final boolean nl = buffer.get(i + 1);
-
- // we've consumed all data in the buffer
- if (!cr && !nl) {
- return;
- }
-
- if (cr) {
- out.write(CARRIAGE_RETURN);
+ /**
+ *
+ */
+ private FlowFile updateAttributes(ProcessSession session, FlowFile splitFlowFile, long lCount, long fSize, String fId, int fIdx, int fCount, String origFname) {
--- End diff --
should avoid abbreviations of variable names - nifi tends to spell everything out
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260605
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
--- End diff --
Should remove blank javadoc lines
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83255847
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
--- End diff --
We should fail-fast here and follow the existing convention of using `if (flowFile == null) { return; }` rather than indenting the entire method.
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---
[GitHub] nifi issue #1116: NIFI-2851 initial commit of perf improvements on SplitText
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on the issue:
https://github.com/apache/nifi/pull/1116
@olegz thanks for jumping on this. Sorry it's taken me so long to get back to it. I verified the changes are good now. I added an additional unit test to verify a corner case that was problematic in the StreamDemarcator and all is looking good. +1 merged to master!
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[GitHub] nifi issue #1116: NIFI-2851 initial commit of perf improvements on SplitText
Posted by olegz <gi...@git.apache.org>.
Github user olegz commented on the issue:
https://github.com/apache/nifi/pull/1116
@markap14 PR comments are addressed. Thanks for reviewing. Back at ya!
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by olegz <gi...@git.apache.org>.
Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83639515
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
--- End diff --
I believe it's OK here since it is completely encapsulated to the SplitText's instance making it essentially an extension to SplitText. I would agree if SplitInfo was 'static class. . .'.
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83257640
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
--- End diff --
We should probably be using getters here for startOffset, length, etc.
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260348
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
--- End diff --
We should not be yielding in this case. There is nothing preventing the processor from making progress on the next FlowFile.
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260548
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
}
-
- session.transfer(flowFile, REL_ORIGINAL);
- session.transfer(splits, REL_SPLITS);
}
- private void finishFragmentAttributes(final ProcessSession session, final FlowFile source, final List<FlowFile> splits) {
- final String originalFilename = source.getAttribute(CoreAttributes.FILENAME.key());
-
- final String fragmentId = UUID.randomUUID().toString();
- final ArrayList<FlowFile> newList = new ArrayList<>(splits);
- splits.clear();
- for (int i = 1; i <= newList.size(); i++) {
- FlowFile ff = newList.get(i - 1);
- final Map<String, String> attributes = new HashMap<>();
- attributes.put(FRAGMENT_ID, fragmentId);
- attributes.put(FRAGMENT_INDEX, String.valueOf(i));
- attributes.put(FRAGMENT_COUNT, String.valueOf(newList.size()));
- attributes.put(SEGMENT_ORIGINAL_FILENAME, originalFilename);
- FlowFile newFF = session.putAllAttributes(ff, attributes);
- splits.add(newFF);
- }
+ /**
+ *
+ */
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>();
+ boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
+ && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
+ results.add(new ValidationResult.Builder().subject("Maximum Fragment Size").valid(!invalidState)
+ .explanation("Property must be specified when Line Split Count is 0").build());
+ return results;
}
- private static class SplitInfo {
-
- public long offsetBytes;
- public long lengthBytes;
- public long lengthLines;
- public long bufferedBytes;
- public boolean endOfStream;
-
- public SplitInfo() {
- this.offsetBytes = 0L;
- this.lengthBytes = 0L;
- this.lengthLines = 0L;
- this.bufferedBytes = 0L;
- this.endOfStream = false;
- }
+ /**
--- End diff --
Should remove blank javadoc lines
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83258027
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
--- End diff --
I believe that leaving this as 1 is correct, and that it should not be changed to 0. Changing this would break backward compatibility and provides no real benefit. Though 0 is a more common starting point for developers, 1 is also used commonly enough, and 1 was used as the starting point here specifically because if you look at FlowFile attributes and see, for example, a 3, it is more intuitive to think that this is the 3rd one in a series, rather than the 4th one.
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83262537
--- Diff: nifi-commons/nifi-utils/src/main/java/org/apache/nifi/stream/io/util/TextLineDemarcator.java ---
@@ -0,0 +1,227 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.stream.io.util;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Implementation of demarcator of text lines in the provided
+ * {@link InputStream}. It works similar to the {@link BufferedReader} and its
+ * {@link BufferedReader#readLine()} methods except that it does not create a
+ * String representing the text line and instead returns the offset info for the
+ * computed text line. See {@link #nextOffsetInfo()} and
+ * {@link #nextOffsetInfo(byte[])} for more details.
+ * <p>
+ * This class is NOT thread-safe.
+ * </p>
+ */
+public class TextLineDemarcator {
+
+ private final static int INIT_BUFFER_SIZE = 8192;
+
+ private final InputStream is;
+
+ private final int initialBufferSize;
+
+ private byte[] buffer;
+
+ private int index;
+
+ private int mark;
+
+ private long offset;
+
+ private int bufferLength;
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and default buffer size.
+ */
+ public TextLineDemarcator(InputStream is) {
+ this(is, INIT_BUFFER_SIZE);
+ }
+
+ /**
+ * Constructs an instance of demarcator with provided {@link InputStream}
+ * and initial buffer size.
+ */
+ public TextLineDemarcator(InputStream is, int initialBufferSize) {
+ if (is == null) {
+ throw new IllegalArgumentException("'is' must not be null.");
+ }
+ if (initialBufferSize < 1) {
+ throw new IllegalArgumentException("'initialBufferSize' must be > 0.");
+ }
+ this.is = is;
+ this.initialBufferSize = initialBufferSize;
+ this.buffer = new byte[initialBufferSize];
+ }
+
+ /**
+ * Will compute the next <i>offset info</i> for a
+ * text line (line terminated by either '\r', '\n' or '\r\n').
+ * <br>
+ * The <i>offset info</i> computed and returned as <code>long[]</code> consisting of
+ * 4 elements <code>{startOffset, length, crlfLength, startsWithMatch}</code>.
+ * <ul>
+ * <li><i>startOffset</i> - the offset in the overall stream which represents the beginning of the text line</li>
+ * <li><i>length</i> - length of the text line including CRLF characters</li>
+ * <li><i>crlfLength</i> - the length of the CRLF. Could be either 1 (if line ends with '\n' or '\r')
+ * or 2 (if line ends with '\r\n').</li>
+ * <li><i>startsWithMatch</i> - value is always 1. See {@link #nextOffsetInfo(byte[])} for more info.</li>
+ * </ul>
+ *
+ * @return offset info as <code>long[]</code>
+ */
+ public long[] nextOffsetInfo() {
--- End diff --
Why are we returning a long[] here instead of a POJO? This makes the code more difficult to follow.
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83256735
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
--- End diff --
We should fail-fast here - if error.get() then transfer to failure and return, rather than indenting the next 50 lines or so within a new block
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260507
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
}
-
- session.transfer(flowFile, REL_ORIGINAL);
- session.transfer(splits, REL_SPLITS);
}
- private void finishFragmentAttributes(final ProcessSession session, final FlowFile source, final List<FlowFile> splits) {
- final String originalFilename = source.getAttribute(CoreAttributes.FILENAME.key());
-
- final String fragmentId = UUID.randomUUID().toString();
- final ArrayList<FlowFile> newList = new ArrayList<>(splits);
- splits.clear();
- for (int i = 1; i <= newList.size(); i++) {
- FlowFile ff = newList.get(i - 1);
- final Map<String, String> attributes = new HashMap<>();
- attributes.put(FRAGMENT_ID, fragmentId);
- attributes.put(FRAGMENT_INDEX, String.valueOf(i));
- attributes.put(FRAGMENT_COUNT, String.valueOf(newList.size()));
- attributes.put(SEGMENT_ORIGINAL_FILENAME, originalFilename);
- FlowFile newFF = session.putAllAttributes(ff, attributes);
- splits.add(newFF);
- }
+ /**
+ *
+ */
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>();
+ boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
+ && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
+ results.add(new ValidationResult.Builder().subject("Maximum Fragment Size").valid(!invalidState)
+ .explanation("Property must be specified when Line Split Count is 0").build());
+ return results;
}
- private static class SplitInfo {
-
- public long offsetBytes;
- public long lengthBytes;
- public long lengthLines;
- public long bufferedBytes;
- public boolean endOfStream;
-
- public SplitInfo() {
- this.offsetBytes = 0L;
- this.lengthBytes = 0L;
- this.lengthLines = 0L;
- this.bufferedBytes = 0L;
- this.endOfStream = false;
- }
+ /**
+ *
+ */
+ @Override
+ protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return Collections.unmodifiableList(properties);
}
- public static class EndOfLineBuffer {
- private static final byte CARRIAGE_RETURN = (byte) '\r';
- private static final byte NEWLINE = (byte) '\n';
-
- private final BitSet buffer = new BitSet();
- private int index = 0;
-
- public void clear() {
- index = 0;
- }
-
- public void addEndOfLine(final boolean carriageReturn, final boolean newLine) {
- buffer.set(index++, carriageReturn);
- buffer.set(index++, newLine);
- }
-
- private void drainTo(final OutputStream out) throws IOException {
- for (int i = 0; i < index; i += 2) {
- final boolean cr = buffer.get(i);
- final boolean nl = buffer.get(i + 1);
-
- // we've consumed all data in the buffer
- if (!cr && !nl) {
- return;
- }
-
- if (cr) {
- out.write(CARRIAGE_RETURN);
+ /**
--- End diff --
Should remove blank javadoc lines
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83256378
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
--- End diff --
We should probably be logging e.toString() instead of e.getMessage(), as it provides more details about what went wrong. We should also be logging a toString() of the FlowFile that is being routed to failure.
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[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/nifi/pull/1116
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial comit of perf improvements on Spl...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r82414967
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestSplitText.java ---
@@ -798,6 +798,7 @@ public void testWithSplitThatStartsWithNewLine() {
}
@Test
+ @Ignore // temporary, fixing it
--- End diff --
@olegz did you overlook this?
---
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---
[GitHub] nifi pull request #1116: NIFI-2851 initial commit of perf improvements on Sp...
Posted by markap14 <gi...@git.apache.org>.
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r83260562
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitText.java ---
@@ -150,548 +145,320 @@
.description("If a file cannot be split for some reason, the original file will be routed to this destination and nothing will be routed elsewhere")
.build();
- private List<PropertyDescriptor> properties;
- private Set<Relationship> relationships;
+ private static final List<PropertyDescriptor> properties;
+ private static final Set<Relationship> relationships;
- @Override
- protected void init(final ProcessorInitializationContext context) {
- final List<PropertyDescriptor> properties = new ArrayList<>();
+ static {
+ properties = new ArrayList<>();
properties.add(LINE_SPLIT_COUNT);
properties.add(FRAGMENT_MAX_SIZE);
properties.add(HEADER_LINE_COUNT);
properties.add(HEADER_MARKER);
properties.add(REMOVE_TRAILING_NEWLINES);
- this.properties = Collections.unmodifiableList(properties);
- final Set<Relationship> relationships = new HashSet<>();
+ relationships = new HashSet<>();
relationships.add(REL_ORIGINAL);
relationships.add(REL_SPLITS);
relationships.add(REL_FAILURE);
- this.relationships = Collections.unmodifiableSet(relationships);
}
- @Override
- protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
- List<ValidationResult> results = new ArrayList<>();
-
- final boolean invalidState = (validationContext.getProperty(LINE_SPLIT_COUNT).asInteger() == 0
- && !validationContext.getProperty(FRAGMENT_MAX_SIZE).isSet());
-
- results.add(new ValidationResult.Builder()
- .subject("Maximum Fragment Size")
- .valid(!invalidState)
- .explanation("Property must be specified when Line Split Count is 0")
- .build()
- );
- return results;
- }
-
- @Override
- public Set<Relationship> getRelationships() {
- return relationships;
- }
-
- @Override
- protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
- return properties;
- }
-
- private int readLines(final InputStream in, final int maxNumLines, final long maxByteCount, final OutputStream out,
- final boolean includeLineDelimiter, final byte[] leadingNewLineBytes) throws IOException {
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
-
- byte[] leadingBytes = leadingNewLineBytes;
- int numLines = 0;
- long totalBytes = 0L;
- for (int i = 0; i < maxNumLines; i++) {
- final EndOfLineMarker eolMarker = countBytesToSplitPoint(in, out, totalBytes, maxByteCount, includeLineDelimiter, eolBuffer, leadingBytes);
- final long bytes = eolMarker.getBytesConsumed();
- leadingBytes = eolMarker.getLeadingNewLineBytes();
-
- if (includeLineDelimiter && out != null) {
- if (leadingBytes != null) {
- out.write(leadingBytes);
- leadingBytes = null;
- }
- eolBuffer.drainTo(out);
- }
- totalBytes += bytes;
- if (bytes <= 0) {
- return numLines;
- }
- numLines++;
- if (totalBytes >= maxByteCount) {
- break;
- }
- }
- return numLines;
- }
-
- private EndOfLineMarker countBytesToSplitPoint(final InputStream in, final OutputStream out, final long bytesReadSoFar, final long maxSize,
- final boolean includeLineDelimiter, final EndOfLineBuffer eolBuffer, final byte[] leadingNewLineBytes) throws IOException {
- long bytesRead = 0L;
- final ByteArrayOutputStream buffer;
- if (out != null) {
- buffer = new ByteArrayOutputStream();
- } else {
- buffer = null;
- }
- byte[] bytesToWriteFirst = leadingNewLineBytes;
-
- in.mark(Integer.MAX_VALUE);
- while (true) {
- final int nextByte = in.read();
-
- // if we hit end of stream we're done
- if (nextByte == -1) {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, true, bytesToWriteFirst); // bytesToWriteFirst should be "null"?
- }
+ private volatile boolean removeTrailingNewLines;
- // Verify leading bytes do not violate size limitation
- if (bytesToWriteFirst != null && (bytesToWriteFirst.length + bytesRead) > (maxSize - bytesReadSoFar) && includeLineDelimiter) {
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
- // Write leadingNewLines, if appropriate
- if ( buffer != null && includeLineDelimiter && bytesToWriteFirst != null) {
- bytesRead += bytesToWriteFirst.length;
- buffer.write(bytesToWriteFirst);
- bytesToWriteFirst = null;
- }
- // buffer the output
- bytesRead++;
- if (buffer != null && nextByte != '\n' && nextByte != '\r') {
- if (bytesToWriteFirst != null) {
- buffer.write(bytesToWriteFirst);
- }
- bytesToWriteFirst = null;
- eolBuffer.drainTo(buffer);
- eolBuffer.clear();
- buffer.write(nextByte);
- }
+ private volatile long maxSplitSize;
- // check the size limit
- if (bytesRead > (maxSize-bytesReadSoFar) && bytesReadSoFar > 0) {
- in.reset();
- if (buffer != null) {
- buffer.close();
- }
- return new EndOfLineMarker(-1, eolBuffer, false, leadingNewLineBytes);
- }
+ private volatile int lineCount;
- // if we have a new line, then we're done
- if (nextByte == '\n') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- eolBuffer.addEndOfLine(false, true);
- }
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
+ private volatile int headerLineCount;
- // Determine if \n follows \r; in either case, end of line has been reached
- if (nextByte == '\r') {
- if (buffer != null) {
- buffer.writeTo(out);
- buffer.close();
- }
- in.mark(1);
- final int lookAheadByte = in.read();
- if (lookAheadByte == '\n') {
- eolBuffer.addEndOfLine(true, true);
- return new EndOfLineMarker(bytesRead + 1, eolBuffer, false, bytesToWriteFirst);
- } else {
- in.reset();
- eolBuffer.addEndOfLine(true, false);
- return new EndOfLineMarker(bytesRead, eolBuffer, false, bytesToWriteFirst);
- }
- }
- }
- }
+ private volatile String headerMarker;
- private SplitInfo locateSplitPoint(final InputStream in, final int numLines, final boolean keepAllNewLines, final long maxSize,
- final long bufferedBytes) throws IOException {
- final SplitInfo info = new SplitInfo();
- final EndOfLineBuffer eolBuffer = new EndOfLineBuffer();
- int lastByte = -1;
- info.lengthBytes = bufferedBytes;
- long lastEolBufferLength = 0L;
-
- while ((info.lengthLines < numLines || (info.lengthLines == numLines && lastByte == '\r'))
- && (((info.lengthBytes + eolBuffer.length()) < maxSize) || info.lengthLines == 0)
- && eolBuffer.length() < maxSize) {
- in.mark(1);
- final int nextByte = in.read();
- // Check for \n following \r on last line
- if (info.lengthLines == numLines && lastByte == '\r' && nextByte != '\n') {
- in.reset();
- break;
- }
- switch (nextByte) {
- case -1:
- info.endOfStream = true;
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- return info;
- case '\r':
- eolBuffer.addEndOfLine(true, false);
- info.lengthLines++;
- info.bufferedBytes = 0;
- break;
- case '\n':
- eolBuffer.addEndOfLine(false, true);
- if (lastByte != '\r') {
- info.lengthLines++;
- }
- info.bufferedBytes = 0;
- break;
- default:
- if (eolBuffer.length() > 0) {
- info.lengthBytes += eolBuffer.length();
- lastEolBufferLength = eolBuffer.length();
- eolBuffer.clear();
- }
- info.lengthBytes++;
- info.bufferedBytes++;
- break;
- }
- lastByte = nextByte;
- }
- // if current line exceeds size and not keeping eol characters, remove previously applied eol characters
- if ((info.lengthBytes + eolBuffer.length()) >= maxSize && !keepAllNewLines) {
- info.lengthBytes -= lastEolBufferLength;
- }
- if (keepAllNewLines) {
- info.lengthBytes += eolBuffer.length();
- }
- return info;
+ @Override
+ public Set<Relationship> getRelationships() {
+ return Collections.unmodifiableSet(relationships);
}
- private int countHeaderLines(final ByteCountingInputStream in,
- final String headerMarker) throws IOException {
- int headerInfo = 0;
-
- final BufferedReader br = new BufferedReader(new InputStreamReader(in));
- in.mark(Integer.MAX_VALUE);
- String line = br.readLine();
- while (line != null) {
- // if line is not a header line, reset stream and return header counts
- if (!line.startsWith(headerMarker)) {
- in.reset();
- return headerInfo;
- } else {
- headerInfo++;
- }
- line = br.readLine();
- }
- in.reset();
- return headerInfo;
+ /**
+ *
+ */
+ @OnScheduled
+ public void onSchedule(ProcessContext context) {
+ this.removeTrailingNewLines = context.getProperty(REMOVE_TRAILING_NEWLINES).isSet()
+ ? context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean() : false;
+ this.maxSplitSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
+ ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
+ this.lineCount = context.getProperty(LINE_SPLIT_COUNT).asInteger();
+ this.headerLineCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
+ this.headerMarker = context.getProperty(HEADER_MARKER).getValue();
}
+ /**
+ * Will split the incoming stream releasing all splits as FlowFile at once.
+ */
@Override
- public void onTrigger(final ProcessContext context, final ProcessSession session) {
- final FlowFile flowFile = session.get();
- if (flowFile == null) {
- return;
- }
-
- final ComponentLog logger = getLogger();
- final int headerCount = context.getProperty(HEADER_LINE_COUNT).asInteger();
- final int maxLineCount = (context.getProperty(LINE_SPLIT_COUNT).asInteger() == 0)
- ? Integer.MAX_VALUE : context.getProperty(LINE_SPLIT_COUNT).asInteger();
- final long maxFragmentSize = context.getProperty(FRAGMENT_MAX_SIZE).isSet()
- ? context.getProperty(FRAGMENT_MAX_SIZE).asDataSize(DataUnit.B).longValue() : Long.MAX_VALUE;
- final String headerMarker = context.getProperty(HEADER_MARKER).getValue();
- final boolean includeLineDelimiter = !context.getProperty(REMOVE_TRAILING_NEWLINES).asBoolean();
-
- final AtomicReference<String> errorMessage = new AtomicReference<>(null);
- final ArrayList<SplitInfo> splitInfos = new ArrayList<>();
-
- final long startNanos = System.nanoTime();
- final List<FlowFile> splits = new ArrayList<>();
- session.read(flowFile, new InputStreamCallback() {
- @Override
- public void process(final InputStream rawIn) throws IOException {
- try (final BufferedInputStream bufferedIn = new BufferedInputStream(rawIn);
- final ByteCountingInputStream in = new ByteCountingInputStream(bufferedIn)) {
-
- long bufferedPartialLine = 0;
-
- // if we have header lines, copy them into a ByteArrayOutputStream
- final ByteArrayOutputStream headerStream = new ByteArrayOutputStream();
- // Determine the number of lines of header, priority given to HEADER_LINE_COUNT property
- int headerInfoLineCount = 0;
- if (headerCount > 0) {
- headerInfoLineCount = headerCount;
- } else {
- if (headerMarker != null) {
- headerInfoLineCount = countHeaderLines(in, headerMarker);
+ public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile != null) {
+ AtomicBoolean error = new AtomicBoolean();
+ List<FlowFile> splitFlowFiles = new ArrayList<>();
+ List<SplitInfo> computedSplitsInfo = new ArrayList<>();
+ AtomicReference<SplitInfo> headerSplitInfoRef = new AtomicReference<>();
+ session.read(flowFile, new InputStreamCallback() {
+ @Override
+ public void process(InputStream in) throws IOException {
+ TextLineDemarcator demarcator = new TextLineDemarcator(in);
+ SplitInfo splitInfo = null;
+ long startOffset = 0;
+
+ // Compute fragment representing the header (if available)
+ long start = System.nanoTime();
+ try {
+ if (SplitText.this.headerLineCount > 0) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, SplitText.this.headerLineCount, null, null);
+ if (splitInfo.lineCount < SplitText.this.headerLineCount) {
+ error.set(true);
+ getLogger().error("Unable to split " + flowFile + " due to insufficient amount of header lines. Required "
+ + SplitText.this.headerLineCount + " but was " + splitInfo.lineCount + ". Routing to failure.");
+ }
+ } else if (SplitText.this.headerMarker != null) {
+ splitInfo = SplitText.this.computeHeader(demarcator, startOffset, Long.MAX_VALUE, SplitText.this.headerMarker.getBytes(StandardCharsets.UTF_8), null);
}
+ headerSplitInfoRef.set(splitInfo);
+ } catch (IllegalStateException e) {
+ error.set(true);
+ getLogger().error(e.getMessage() + " Routing to failure.");
}
- final byte[] headerNewLineBytes;
- final byte[] headerBytesWithoutTrailingNewLines;
- if (headerInfoLineCount > 0) {
- final int headerLinesCopied = readLines(in, headerInfoLineCount, Long.MAX_VALUE, headerStream, true, null);
-
- if (headerLinesCopied < headerInfoLineCount) {
- errorMessage.set("Header Line Count is set to " + headerInfoLineCount + " but file had only " + headerLinesCopied + " lines");
- return;
+ // Compute and collect fragments representing the individual splits
+ if (!error.get()) {
+ if (headerSplitInfoRef.get() != null) {
+ startOffset = headerSplitInfoRef.get().length;
}
-
- // Break header apart into trailing newlines and remaining text
- final byte[] headerBytes = headerStream.toByteArray();
- int headerNewLineByteCount = 0;
- for (int i = headerBytes.length - 1; i >= 0; i--) {
- final byte headerByte = headerBytes[i];
-
- if (headerByte == '\r' || headerByte == '\n') {
- headerNewLineByteCount++;
- } else {
- break;
- }
+ long preAccumulatedLength = startOffset;
+ while ((splitInfo = SplitText.this.nextSplit(demarcator, startOffset, SplitText.this.lineCount, splitInfo, preAccumulatedLength)) != null) {
+ computedSplitsInfo.add(splitInfo);
+ startOffset += splitInfo.length;
}
-
- if (headerNewLineByteCount == 0) {
- headerNewLineBytes = null;
- headerBytesWithoutTrailingNewLines = headerBytes;
- } else {
- headerNewLineBytes = new byte[headerNewLineByteCount];
- System.arraycopy(headerBytes, headerBytes.length - headerNewLineByteCount, headerNewLineBytes, 0, headerNewLineByteCount);
-
- headerBytesWithoutTrailingNewLines = new byte[headerBytes.length - headerNewLineByteCount];
- System.arraycopy(headerBytes, 0, headerBytesWithoutTrailingNewLines, 0, headerBytes.length - headerNewLineByteCount);
+ long stop = System.nanoTime();
+ if (getLogger().isDebugEnabled()) {
+ getLogger().debug("Computed splits in " + (stop - start) + " milliseconds.");
}
- } else {
- headerBytesWithoutTrailingNewLines = null;
- headerNewLineBytes = null;
}
-
- while (true) {
- if (headerInfoLineCount > 0) {
- // if we have header lines, create a new FlowFile, copy the header lines to that file,
- // and then start copying lines
- final AtomicInteger linesCopied = new AtomicInteger(0);
- final AtomicLong bytesCopied = new AtomicLong(0L);
- FlowFile splitFile = session.create(flowFile);
- try {
- splitFile = session.write(splitFile, new OutputStreamCallback() {
- @Override
- public void process(final OutputStream rawOut) throws IOException {
- try (final BufferedOutputStream out = new BufferedOutputStream(rawOut);
- final ByteCountingOutputStream countingOut = new ByteCountingOutputStream(out)) {
- countingOut.write(headerBytesWithoutTrailingNewLines);
- //readLines has an offset of countingOut.getBytesWritten() to allow for header bytes written already
- linesCopied.set(readLines(in, maxLineCount, maxFragmentSize - countingOut.getBytesWritten(), countingOut,
- includeLineDelimiter, headerNewLineBytes));
- bytesCopied.set(countingOut.getBytesWritten());
- }
- }
- });
- splitFile = session.putAttribute(splitFile, SPLIT_LINE_COUNT, String.valueOf(linesCopied.get()));
- splitFile = session.putAttribute(splitFile, FRAGMENT_SIZE, String.valueOf(bytesCopied.get()));
- logger.debug("Created Split File {} with {} lines, {} bytes", new Object[]{splitFile, linesCopied.get(), bytesCopied.get()});
- } finally {
- if (linesCopied.get() > 0) {
- splits.add(splitFile);
+ }
+ });
+ if (!error.get()) {
+ FlowFile headerFlowFile = null;
+ long headerCrlfLength = 0;
+ if (headerSplitInfoRef.get() != null) {
+ headerFlowFile = session.clone(flowFile, headerSplitInfoRef.get().startOffset, headerSplitInfoRef.get().length);
+ headerCrlfLength = headerSplitInfoRef.get().trimmedLength;
+ }
+ int fragmentIndex = 1; // set to 1 to preserve the existing behavior *only*. Perhaps should be deprecated to follow the 0,1,2... scheme
+ String fragmentId = UUID.randomUUID().toString();
+
+ if (computedSplitsInfo.size() == 0) {
+ FlowFile splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength);
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, 0, splitFlowFile.getSize(),
+ fragmentId, fragmentIndex++, 0, flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
+ } else {
+ for (SplitInfo computedSplitInfo : computedSplitsInfo) {
+ long length = SplitText.this.removeTrailingNewLines ? computedSplitInfo.trimmedLength : computedSplitInfo.length;
+ boolean proceedWithClone = headerFlowFile != null || length > 0;
+ if (proceedWithClone) {
+ FlowFile splitFlowFile = null;
+ if (headerFlowFile != null) {
+ if (length > 0) {
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
+ splitFlowFile = session.merge( Arrays.asList(new FlowFile[] { headerFlowFile, splitFlowFile }), splitFlowFile);
} else {
- // if the number of content lines is a multiple of the SPLIT_LINE_COUNT,
- // the last flow file will contain just a header; don't forward that one
- session.remove(splitFile);
+ splitFlowFile = session.clone(flowFile, 0, headerFlowFile.getSize() - headerCrlfLength); // trim the last CRLF if split consists of only HEADER
}
- }
-
- // Check for EOF
- in.mark(1);
- if (in.read() == -1) {
- break;
- }
- in.reset();
-
- } else {
- // We have no header lines, so we can simply demarcate the original File via the
- // ProcessSession#clone method.
- long beforeReadingLines = in.getBytesConsumed() - bufferedPartialLine;
- final SplitInfo info = locateSplitPoint(in, maxLineCount, includeLineDelimiter, maxFragmentSize, bufferedPartialLine);
- if (context.getProperty(FRAGMENT_MAX_SIZE).isSet()) {
- bufferedPartialLine = info.bufferedBytes;
- }
- if (info.endOfStream) {
- // stream is out of data
- if (info.lengthBytes > 0) {
- info.offsetBytes = beforeReadingLines;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
- break;
} else {
- if (info.lengthBytes != 0) {
- info.offsetBytes = beforeReadingLines;
- info.lengthBytes -= bufferedPartialLine;
- splitInfos.add(info);
- final long procNanos = System.nanoTime() - startNanos;
- final long procMillis = TimeUnit.MILLISECONDS.convert(procNanos, TimeUnit.NANOSECONDS);
- logger.debug("Detected start of Split File in {} at byte offset {} with a length of {} bytes; "
- + "total splits = {}; total processing time = {} ms",
- new Object[]{flowFile, beforeReadingLines, info.lengthBytes, splitInfos.size(), procMillis});
- }
+ splitFlowFile = session.clone(flowFile, computedSplitInfo.startOffset, length);
}
+
+ splitFlowFile = SplitText.this.updateAttributes(session, splitFlowFile, computedSplitInfo.lineCount, splitFlowFile.getSize(), fragmentId, fragmentIndex++,
+ computedSplitsInfo.size(), flowFile.getAttribute(CoreAttributes.FILENAME.key()));
+ splitFlowFiles.add(splitFlowFile);
}
}
}
- }
- });
- if (errorMessage.get() != null) {
- logger.error("Unable to split {} due to {}; routing to failure", new Object[]{flowFile, errorMessage.get()});
- session.transfer(flowFile, REL_FAILURE);
- if (!splits.isEmpty()) {
- session.remove(splits);
+ getLogger().info("Split " + flowFile + " into " + splitFlowFiles.size() + " flow files" + (headerFlowFile != null ? " containing headers." : "."));
+ if (headerFlowFile != null) {
+ session.remove(headerFlowFile);
+ }
}
- return;
- }
- if (!splitInfos.isEmpty()) {
- // Create the splits
- for (final SplitInfo info : splitInfos) {
- FlowFile split = session.clone(flowFile, info.offsetBytes, info.lengthBytes);
- split = session.putAttribute(split, SPLIT_LINE_COUNT, String.valueOf(info.lengthLines));
- split = session.putAttribute(split, FRAGMENT_SIZE, String.valueOf(info.lengthBytes));
- splits.add(split);
+ if (error.get()) {
+ session.transfer(flowFile, REL_FAILURE);
+ } else {
+ session.transfer(flowFile, REL_ORIGINAL);
+ session.transfer(splitFlowFiles, REL_SPLITS);
}
- }
- finishFragmentAttributes(session, flowFile, splits);
-
- if (splits.size() > 10) {
- logger.info("Split {} into {} files", new Object[]{flowFile, splits.size()});
} else {
- logger.info("Split {} into {} files: {}", new Object[]{flowFile, splits.size(), splits});
+ context.yield();
}
-
- session.transfer(flowFile, REL_ORIGINAL);
- session.transfer(splits, REL_SPLITS);
}
- private void finishFragmentAttributes(final ProcessSession session, final FlowFile source, final List<FlowFile> splits) {
- final String originalFilename = source.getAttribute(CoreAttributes.FILENAME.key());
-
- final String fragmentId = UUID.randomUUID().toString();
- final ArrayList<FlowFile> newList = new ArrayList<>(splits);
- splits.clear();
- for (int i = 1; i <= newList.size(); i++) {
- FlowFile ff = newList.get(i - 1);
- final Map<String, String> attributes = new HashMap<>();
- attributes.put(FRAGMENT_ID, fragmentId);
- attributes.put(FRAGMENT_INDEX, String.valueOf(i));
- attributes.put(FRAGMENT_COUNT, String.valueOf(newList.size()));
- attributes.put(SEGMENT_ORIGINAL_FILENAME, originalFilename);
- FlowFile newFF = session.putAllAttributes(ff, attributes);
- splits.add(newFF);
- }
+ /**
--- End diff --
Should remove blank javadoc lines
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[GitHub] nifi pull request #1116: NIFI-2851 initial comit of perf improvements on Spl...
Posted by olegz <gi...@git.apache.org>.
Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1116#discussion_r82415774
--- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestSplitText.java ---
@@ -798,6 +798,7 @@ public void testWithSplitThatStartsWithNewLine() {
}
@Test
+ @Ignore // temporary, fixing it
--- End diff --
No, didn't want to hold the PR as this is kind of an edge case which I hope to address after thinking about it a bit.
Basically the assertion fails here ```splits.get(1).assertContentEquals("");``` since it now comes it as new line. But I also wonder why is this a split to begin with with no data?
So, i wanted to look some more as well as see if it is actually a bug that needs to be fixed, but didn't want to hold the PR since regardless this is an edge case.
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