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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2021/07/15 18:16:11 UTC
[GitHub] [beam] y1chi commented on a change in pull request #15137: [BEAM-2914] Add TimestampPrefixingWindowCoder as beam:coder:custom_window:v1.
y1chi commented on a change in pull request #15137:
URL: https://github.com/apache/beam/pull/15137#discussion_r670701960
##########
File path: model/pipeline/src/main/proto/beam_runner_api.proto
##########
@@ -939,6 +939,15 @@ message StandardCoders {
// Experimental.
STATE_BACKED_ITERABLE = 9 [(beam_urn) = "beam:coder:state_backed_iterable:v1"];
+
+ // Encodes an arbitrary user defined window, the coder extracts the required
+ // maxTimestamp(inclusive) parameter for the window and prefix it to the
+ // bytes encoded from the window by using user defined and registered window
+ // coder.
+ //
+ // Components: Coder for the custom window type.
+ CUSTOM_WINDOW = 16 [(beam_urn) = "beam:coder:custom_window:v1"];
Review comment:
Done.
##########
File path: runners/core-construction-java/src/test/java/org/apache/beam/runners/core/construction/CommonCoderTest.java
##########
@@ -345,6 +347,11 @@ private static Object convertValue(Object value, CommonCoder coderSpec, Coder co
byte[] shardId = ((String) kvMap.get("shardId")).getBytes(StandardCharsets.ISO_8859_1);
return ShardedKey.of(
convertValue(kvMap.get("key"), coderSpec.getComponents().get(0), keyCoder), shardId);
+ } else if (s.equals(getUrn(StandardCoders.Enum.CUSTOM_WINDOW))) {
+ Map<String, Object> kvMap = (Map<String, Object>) value;
+ Instant end = new Instant(((Number) kvMap.get("end")).longValue());
+ Duration span = Duration.millis(((Number) kvMap.get("span")).longValue());
+ return new IntervalWindow(end.minus(span), span);
Review comment:
Done.
##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/coders/TimestampPrefixingWindowCoder.java
##########
@@ -0,0 +1,70 @@
+/*
+ * 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.beam.sdk.coders;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists;
+
+/**
+ * A {@link TimestampPrefixingWindowCoder} wraps arbitrary user custom window coder. While encoding
+ * the custom window type, it extracts the maxTimestamp(inclusive) of the window and prefix it to
+ * the encoded bytes of the window using the user custom window coder.
+ *
+ * @param <T> The custom window type.
+ */
+public class TimestampPrefixingWindowCoder<T> extends StructuredCoder<T> {
+ private final Coder<T> windowCoder;
+
+ public static <T> TimestampPrefixingWindowCoder<T> of(Coder<T> windowCoder) {
+ return new TimestampPrefixingWindowCoder<>(windowCoder);
+ }
+
+ TimestampPrefixingWindowCoder(Coder<T> windowCoder) {
+ this.windowCoder = windowCoder;
+ }
+
+ @Override
+ public void encode(T value, OutputStream outStream) throws CoderException, IOException {
+ BoundedWindow window = (BoundedWindow) value;
+ if (window == null) {
+ throw new CoderException("Cannot encode null window");
+ }
+ InstantCoder.of().encode(window.maxTimestamp(), outStream);
+ windowCoder.encode(value, outStream);
+ }
+
+ @Override
+ public T decode(InputStream inStream) throws CoderException, IOException {
+ InstantCoder.of().decode(inStream);
+ return windowCoder.decode(inStream);
+ }
+
+ @Override
+ public List<? extends Coder<?>> getCoderArguments() {
+ return Lists.newArrayList(windowCoder);
+ }
+
+ @Override
+ public void verifyDeterministic() throws NonDeterministicException {
Review comment:
Done.
##########
File path: sdks/java/core/src/test/java/org/apache/beam/sdk/coders/TimestampPrefixingWindowCoderTest.java
##########
@@ -0,0 +1,121 @@
+/*
+ * 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.beam.sdk.coders;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Objects;
+import org.apache.beam.sdk.testing.CoderProperties;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
+import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
+import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.joda.time.Instant;
+import org.junit.Test;
+
+public class TimestampPrefixingWindowCoderTest {
+
+ private static class CustomWindow extends IntervalWindow {
+ private boolean isBig;
+
+ CustomWindow(Instant start, Instant end, boolean isBig) {
+ super(start, end);
+ this.isBig = isBig;
+ }
+
+ @Override
+ public boolean equals(@Nullable Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ CustomWindow that = (CustomWindow) o;
+ return super.equals(o) && this.isBig == that.isBig;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(super.hashCode(), isBig);
+ }
+ }
+
+ private static class CustomWindowCoder extends CustomCoder<CustomWindow> {
+
+ private static final CustomWindowCoder INSTANCE = new CustomWindowCoder();
+ private static final Coder<IntervalWindow> INTERVAL_WINDOW_CODER = IntervalWindow.getCoder();
+ private static final VarIntCoder VAR_INT_CODER = VarIntCoder.of();
+
+ public static CustomWindowCoder of() {
+ return INSTANCE;
+ }
+
+ @Override
+ public void encode(CustomWindow window, OutputStream outStream) throws IOException {
+ INTERVAL_WINDOW_CODER.encode(window, outStream);
+ VAR_INT_CODER.encode(window.isBig ? 1 : 0, outStream);
Review comment:
Done.
##########
File path: sdks/java/core/src/test/java/org/apache/beam/sdk/coders/TimestampPrefixingWindowCoderTest.java
##########
@@ -0,0 +1,121 @@
+/*
+ * 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.beam.sdk.coders;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Objects;
+import org.apache.beam.sdk.testing.CoderProperties;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
+import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
+import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.joda.time.Instant;
+import org.junit.Test;
+
+public class TimestampPrefixingWindowCoderTest {
+
+ private static class CustomWindow extends IntervalWindow {
+ private boolean isBig;
+
+ CustomWindow(Instant start, Instant end, boolean isBig) {
+ super(start, end);
+ this.isBig = isBig;
+ }
+
+ @Override
+ public boolean equals(@Nullable Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ CustomWindow that = (CustomWindow) o;
+ return super.equals(o) && this.isBig == that.isBig;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(super.hashCode(), isBig);
+ }
+ }
+
+ private static class CustomWindowCoder extends CustomCoder<CustomWindow> {
+
+ private static final CustomWindowCoder INSTANCE = new CustomWindowCoder();
+ private static final Coder<IntervalWindow> INTERVAL_WINDOW_CODER = IntervalWindow.getCoder();
+ private static final VarIntCoder VAR_INT_CODER = VarIntCoder.of();
+
+ public static CustomWindowCoder of() {
+ return INSTANCE;
+ }
+
+ @Override
+ public void encode(CustomWindow window, OutputStream outStream) throws IOException {
+ INTERVAL_WINDOW_CODER.encode(window, outStream);
+ VAR_INT_CODER.encode(window.isBig ? 1 : 0, outStream);
+ }
+
+ @Override
+ public CustomWindow decode(InputStream inStream) throws IOException {
+ IntervalWindow superWindow = INTERVAL_WINDOW_CODER.decode(inStream);
+ boolean isBig = VAR_INT_CODER.decode(inStream) != 0;
+ return new CustomWindow(superWindow.start(), superWindow.end(), isBig);
+ }
+
+ @Override
+ public void verifyDeterministic() throws NonDeterministicException {
+ INTERVAL_WINDOW_CODER.verifyDeterministic();
+ VAR_INT_CODER.verifyDeterministic();
+ }
+ }
+
+ @Test
+ public void testEncodeAndDecode() throws Exception {
+ List<IntervalWindow> intervalWindowsToTest =
+ Lists.newArrayList(
+ new IntervalWindow(new Instant(0L), new Instant(1L)),
+ new IntervalWindow(new Instant(100L), new Instant(200L)),
+ new IntervalWindow(new Instant(0L), BoundedWindow.TIMESTAMP_MAX_VALUE));
+ TimestampPrefixingWindowCoder<IntervalWindow> coder1 =
+ TimestampPrefixingWindowCoder.of(IntervalWindow.getCoder());
+ for (IntervalWindow window : intervalWindowsToTest) {
+ CoderProperties.coderDecodeEncodeEqual(coder1, window);
+ }
+
+ GlobalWindow globalWindow = GlobalWindow.INSTANCE;
+ TimestampPrefixingWindowCoder<GlobalWindow> coder2 =
+ TimestampPrefixingWindowCoder.of(GlobalWindow.Coder.INSTANCE);
+ CoderProperties.coderDecodeEncodeEqual(coder2, globalWindow);
+
+ List<CustomWindow> customWindowsToTest =
+ Lists.newArrayList(
+ new CustomWindow(new Instant(0L), new Instant(1L), true),
+ new CustomWindow(new Instant(100L), new Instant(200L), false),
+ new CustomWindow(new Instant(0L), BoundedWindow.TIMESTAMP_MAX_VALUE, true));
+ TimestampPrefixingWindowCoder<CustomWindow> coder3 =
+ TimestampPrefixingWindowCoder.of(CustomWindowCoder.of());
+ for (CustomWindow window : customWindowsToTest) {
+ CoderProperties.coderDecodeEncodeEqual(coder3, window);
+ }
+ }
Review comment:
Done.
##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/coders/TimestampPrefixingWindowCoder.java
##########
@@ -0,0 +1,70 @@
+/*
+ * 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.beam.sdk.coders;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists;
+
+/**
+ * A {@link TimestampPrefixingWindowCoder} wraps arbitrary user custom window coder. While encoding
+ * the custom window type, it extracts the maxTimestamp(inclusive) of the window and prefix it to
+ * the encoded bytes of the window using the user custom window coder.
+ *
+ * @param <T> The custom window type.
+ */
+public class TimestampPrefixingWindowCoder<T> extends StructuredCoder<T> {
Review comment:
Done.
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