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Posted to commits@seatunnel.apache.org by GitBox <gi...@apache.org> on 2022/10/27 05:07:33 UTC
[GitHub] [incubator-seatunnel] 531651225 commented on a diff in pull request #3164: [Feature][Connector-V2] Starrocks sink connector
531651225 commented on code in PR #3164:
URL: https://github.com/apache/incubator-seatunnel/pull/3164#discussion_r1006406674
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seatunnel-connectors-v2/connector-starrocks/src/main/java/org/apache/seatunnel/connectors/seatunnel/starrocks/client/StarRocksStreamLoadVisitor.java:
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@@ -0,0 +1,324 @@
+/*
+ * 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.seatunnel.connectors.seatunnel.starrocks.client;
+
+import org.apache.seatunnel.common.utils.JsonUtils;
+import org.apache.seatunnel.connectors.seatunnel.starrocks.config.SinkConfig;
+import org.apache.seatunnel.connectors.seatunnel.starrocks.serialize.StarRocksDelimiterParser;
+
+import org.apache.commons.codec.binary.Base64;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpStatus;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPut;
+import org.apache.http.entity.ByteArrayEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.DefaultRedirectStrategy;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.util.EntityUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+public class StarRocksStreamLoadVisitor {
+
+ private static final Logger LOG = LoggerFactory.getLogger(StarRocksStreamLoadVisitor.class);
+ private static final int CONNECT_TIMEOUT = 1000000;
+ private static final int MAX_SLEEP_TIME = 5;
+
+ private final SinkConfig sinkConfig;
+ private long pos;
+ private static final String RESULT_FAILED = "Fail";
+ private static final String RESULT_LABEL_EXISTED = "Label Already Exists";
+ private static final String LAEBL_STATE_VISIBLE = "VISIBLE";
+ private static final String LAEBL_STATE_COMMITTED = "COMMITTED";
+ private static final String RESULT_LABEL_PREPARE = "PREPARE";
+ private static final String RESULT_LABEL_ABORTED = "ABORTED";
+ private static final String RESULT_LABEL_UNKNOWN = "UNKNOWN";
+
+ private List<String> fieldNames;
+
+ public StarRocksStreamLoadVisitor(SinkConfig sinkConfig, List<String> fieldNames) {
+ this.sinkConfig = sinkConfig;
+ this.fieldNames = fieldNames;
+ }
+
+ public void doStreamLoad(StarRocksFlushTuple flushData) throws IOException {
+ String host = getAvailableHost();
+ if (null == host) {
+ throw new IOException("None of the host in `load_url` could be connected.");
+ }
+ String loadUrl = new StringBuilder(host)
+ .append("/api/")
+ .append(sinkConfig.getDatabase())
+ .append("/")
+ .append(sinkConfig.getTable())
+ .append("/_stream_load")
+ .toString();
+ if (LOG.isDebugEnabled()) {
+ LOG.debug(String.format("Start to join batch data: rows[%d] bytes[%d] label[%s].", flushData.getRows().size(), flushData.getBytes(), flushData.getLabel()));
+ }
+ Map<String, Object> loadResult = doHttpPut(loadUrl, flushData.getLabel(), joinRows(flushData.getRows(), flushData.getBytes().intValue()));
+ final String keyStatus = "Status";
+ if (null == loadResult || !loadResult.containsKey(keyStatus)) {
+ LOG.error("unknown result status. {}", loadResult);
+ throw new IOException("Unable to flush data to StarRocks: unknown result status. " + loadResult);
+ }
+ if (LOG.isDebugEnabled()) {
+ LOG.debug(new StringBuilder("StreamLoad response:\n").append(JsonUtils.toJsonString(loadResult)).toString());
+ }
+ if (RESULT_FAILED.equals(loadResult.get(keyStatus))) {
+ StringBuilder errorBuilder = new StringBuilder("Failed to flush data to StarRocks.\n");
+ if (loadResult.containsKey("Message")) {
+ errorBuilder.append(loadResult.get("Message"));
+ errorBuilder.append('\n');
+ }
+ if (loadResult.containsKey("ErrorURL")) {
+ LOG.error("StreamLoad response: {}", loadResult);
+ try {
+ errorBuilder.append(doHttpGet(loadResult.get("ErrorURL").toString()));
+ errorBuilder.append('\n');
+ } catch (IOException e) {
+ LOG.warn("Get Error URL failed. {} ", loadResult.get("ErrorURL"), e);
+ }
+ } else {
+ errorBuilder.append(JsonUtils.toJsonString(loadResult));
+ errorBuilder.append('\n');
+ }
+ throw new IOException(errorBuilder.toString());
+ } else if (RESULT_LABEL_EXISTED.equals(loadResult.get(keyStatus))) {
+ LOG.debug(new StringBuilder("StreamLoad response:\n").append(JsonUtils.toJsonString(loadResult)).toString());
+ // has to block-checking the state to get the final result
+ checkLabelState(host, flushData.getLabel());
+ }
+ }
+
+ private String getAvailableHost() {
+ List<String> hostList = sinkConfig.getNodeUrls();
+ long tmp = pos + hostList.size();
+ for (; pos < tmp; pos++) {
+ String host = new StringBuilder("http://").append(hostList.get((int) (pos % hostList.size()))).toString();
+ if (tryHttpConnection(host)) {
+ return host;
+ }
+ }
+ return null;
+ }
+
+ private boolean tryHttpConnection(String host) {
+ try {
+ URL url = new URL(host);
+ HttpURLConnection co = (HttpURLConnection) url.openConnection();
+ co.setConnectTimeout(CONNECT_TIMEOUT);
+ co.connect();
+ co.disconnect();
+ return true;
+ } catch (Exception e1) {
+ LOG.warn("Failed to connect to address:{}", host, e1);
+ return false;
+ }
+ }
+
+ private byte[] joinRows(List<byte[]> rows, int totalBytes) {
+ if (SinkConfig.StreamLoadFormat.CSV.equals(sinkConfig.getLoadFormat())) {
+ Map<String, Object> props = sinkConfig.getStreamLoadProps();
+ byte[] lineDelimiter = StarRocksDelimiterParser.parse((String) props.get("row_delimiter"), "\n").getBytes(StandardCharsets.UTF_8);
+ ByteBuffer bos = ByteBuffer.allocate(totalBytes + rows.size() * lineDelimiter.length);
+ for (byte[] row : rows) {
+ bos.put(row);
+ bos.put(lineDelimiter);
+ }
+ return bos.array();
+ }
+
+ if (SinkConfig.StreamLoadFormat.JSON.equals(sinkConfig.getLoadFormat())) {
+ ByteBuffer bos = ByteBuffer.allocate(totalBytes + (rows.isEmpty() ? 2 : rows.size() + 1));
+ bos.put("[".getBytes(StandardCharsets.UTF_8));
+ byte[] jsonDelimiter = ",".getBytes(StandardCharsets.UTF_8);
+ boolean isFirstElement = true;
+ for (byte[] row : rows) {
+ if (!isFirstElement) {
+ bos.put(jsonDelimiter);
+ }
+ bos.put(row);
+ isFirstElement = false;
+ }
+ bos.put("]".getBytes(StandardCharsets.UTF_8));
+ return bos.array();
+ }
+ throw new RuntimeException("Failed to join rows data, unsupported `format` from stream load properties:");
+ }
+
+ @SuppressWarnings("unchecked")
+ private void checkLabelState(String host, String label) throws IOException {
+ int idx = 0;
+ while (true) {
+ try {
+ TimeUnit.SECONDS.sleep(Math.min(++idx, MAX_SLEEP_TIME));
+ } catch (InterruptedException ex) {
+ break;
+ }
+ try (CloseableHttpClient httpclient = HttpClients.createDefault()) {
+ HttpGet httpGet = new HttpGet(new StringBuilder(host).append("/api/").append(sinkConfig.getDatabase()).append("/get_load_state?label=").append(label).toString());
+ httpGet.setHeader("Authorization", getBasicAuthHeader(sinkConfig.getUsername(), sinkConfig.getPassword()));
+ httpGet.setHeader("Connection", "close");
+ try (CloseableHttpResponse resp = httpclient.execute(httpGet)) {
+ HttpEntity respEntity = getHttpEntity(resp);
+ if (respEntity == null) {
+ throw new IOException(String.format("Failed to flush data to StarRocks, Error " +
+ "could not get the final state of label[%s].\n", label), null);
+ }
+
+ Map<String, Object> result = JsonUtils.parseObject(EntityUtils.toString(respEntity), Map.class);
+ String labelState = (String) result.get("state");
+ if (null == labelState) {
+ throw new IOException(String.format("Failed to flush data to StarRocks, Error " +
+ "could not get the final state of label[%s]. response[%s]\n", label, EntityUtils.toString(respEntity)), null);
+ }
+ LOG.info(String.format("Checking label[%s] state[%s]\n", label, labelState));
+ switch (labelState) {
+ case LAEBL_STATE_VISIBLE:
+ case LAEBL_STATE_COMMITTED:
+ return;
+ case RESULT_LABEL_PREPARE:
+ continue;
+ case RESULT_LABEL_ABORTED:
+ throw new StarRocksStreamLoadFailedException(String.format("Failed to flush data to StarRocks, Error " +
+ "label[%s] state[%s]\n", label, labelState), null, true);
+ case RESULT_LABEL_UNKNOWN:
+ default:
+ throw new StarRocksStreamLoadFailedException(String.format("Failed to flush data to StarRocks, Error " +
+ "label[%s] state[%s]\n", label, labelState), null);
+ }
+ }
+ }
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ private Map<String, Object> doHttpPut(String loadUrl, String label, byte[] data) throws IOException {
Review Comment:
> How about Http related methods written in a separate class？
thinks，i have fixed above . PTAL
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