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...-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/PubsubDynamicSink.java
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| /* | ||
| * 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.runners.dataflow.worker; | ||
|
|
||
| import static org.apache.beam.runners.dataflow.util.Structs.getString; | ||
| import static org.apache.beam.sdk.util.Preconditions.checkArgumentNotNull; | ||
|
|
||
| import com.google.auto.service.AutoService; | ||
| import java.io.IOException; | ||
| import java.util.Map; | ||
| import org.apache.beam.runners.dataflow.util.CloudObject; | ||
| import org.apache.beam.runners.dataflow.util.PropertyNames; | ||
| import org.apache.beam.runners.dataflow.worker.util.common.worker.Sink; | ||
| import org.apache.beam.runners.dataflow.worker.windmill.Pubsub; | ||
| import org.apache.beam.runners.dataflow.worker.windmill.Windmill; | ||
| import org.apache.beam.sdk.coders.Coder; | ||
| import org.apache.beam.sdk.io.gcp.pubsub.PubsubMessage; | ||
| import org.apache.beam.sdk.options.PipelineOptions; | ||
| import org.apache.beam.sdk.util.ByteStringOutputStream; | ||
| import org.apache.beam.sdk.util.WindowedValue; | ||
| import org.apache.beam.vendor.grpc.v1p48p1.com.google.protobuf.ByteString; | ||
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions; | ||
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; | ||
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Maps; | ||
| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
|
||
| @SuppressWarnings({ | ||
| "rawtypes", // TODO(https://github.com/apache/beam/issues/20447) | ||
| }) | ||
| public class PubsubDynamicSink extends Sink<WindowedValue<PubsubMessage>> { | ||
| private final String timestampLabel; | ||
| private final String idLabel; | ||
| private final StreamingModeExecutionContext context; | ||
|
|
||
| PubsubDynamicSink(String timestampLabel, String idLabel, StreamingModeExecutionContext context) { | ||
| this.timestampLabel = timestampLabel; | ||
| this.idLabel = idLabel; | ||
| this.context = context; | ||
| } | ||
|
|
||
| /** A {@link SinkFactory.Registrar} for pubsub sinks. */ | ||
| @AutoService(SinkFactory.Registrar.class) | ||
| public static class Registrar implements SinkFactory.Registrar { | ||
|
|
||
| @Override | ||
| public Map<String, SinkFactory> factories() { | ||
| PubsubDynamicSink.Factory factory = new Factory(); | ||
| return ImmutableMap.of( | ||
| "PubsubDynamicSink", | ||
| factory, | ||
| "org.apache.beam.runners.dataflow.worker.PubsubDynamicSink", | ||
| factory); | ||
| } | ||
| } | ||
|
|
||
| static class Factory implements SinkFactory { | ||
| @Override | ||
| public PubsubDynamicSink create( | ||
| CloudObject spec, | ||
| Coder<?> coder, | ||
| @Nullable PipelineOptions options, | ||
| @Nullable DataflowExecutionContext executionContext, | ||
| DataflowOperationContext operationContext) | ||
| throws Exception { | ||
| String timestampLabel = getString(spec, PropertyNames.PUBSUB_TIMESTAMP_ATTRIBUTE, ""); | ||
| String idLabel = getString(spec, PropertyNames.PUBSUB_ID_ATTRIBUTE, ""); | ||
|
|
||
| return new PubsubDynamicSink( | ||
| timestampLabel, | ||
| idLabel, | ||
| (StreamingModeExecutionContext) checkArgumentNotNull(executionContext)); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public Sink.SinkWriter<WindowedValue<PubsubMessage>> writer() { | ||
| return new PubsubDynamicSink.PubsubWriter(); | ||
| } | ||
|
|
||
| class PubsubWriter implements Sink.SinkWriter<WindowedValue<PubsubMessage>> { | ||
| private final Map<String, Windmill.PubSubMessageBundle.Builder> outputBuilders; | ||
| private final ByteStringOutputStream stream; // Kept across adds for buffer reuse. | ||
|
|
||
| PubsubWriter() { | ||
| outputBuilders = Maps.newHashMap(); | ||
| stream = new ByteStringOutputStream(); | ||
| } | ||
|
|
||
| public ByteString getDataFromMessage(PubsubMessage formatted, ByteStringOutputStream stream) | ||
| throws IOException { | ||
| Pubsub.PubsubMessage.Builder pubsubMessageBuilder = | ||
| Pubsub.PubsubMessage.newBuilder().setData(ByteString.copyFrom(formatted.getPayload())); | ||
| Map<String, String> attributeMap = formatted.getAttributeMap(); | ||
| if (attributeMap != null) { | ||
| pubsubMessageBuilder.putAllAttributes(attributeMap); | ||
| } | ||
| pubsubMessageBuilder.build().writeTo(stream); | ||
| return stream.toByteStringAndReset(); | ||
| } | ||
|
|
||
| public void close(Windmill.PubSubMessageBundle.Builder outputBuilder) throws IOException { | ||
| context.getOutputBuilder().addPubsubMessages(outputBuilder); | ||
| outputBuilder.clear(); | ||
| } | ||
|
|
||
| @Override | ||
| public long add(WindowedValue<PubsubMessage> data) throws IOException { | ||
| String dataTopic = | ||
| checkArgumentNotNull( | ||
| data.getValue().getTopic(), "No topic set for message when using dynamic topics."); | ||
| Preconditions.checkArgument( | ||
| !dataTopic.isEmpty(), "No topic set for message when using dynamic topics."); | ||
| ByteString byteString = getDataFromMessage(data.getValue(), stream); | ||
| Windmill.PubSubMessageBundle.Builder builder = | ||
| outputBuilders.computeIfAbsent( | ||
| dataTopic, | ||
| topic -> | ||
| context | ||
| .getOutputBuilder() | ||
| .addPubsubMessagesBuilder() | ||
| .setTopic(topic) | ||
| .setTimestampLabel(timestampLabel) | ||
| .setIdLabel(idLabel) | ||
| .setWithAttributes(true)); | ||
| builder.addMessages( | ||
| Windmill.Message.newBuilder() | ||
| .setData(byteString) | ||
| .setTimestamp(WindmillTimeUtils.harnessToWindmillTimestamp(data.getTimestamp())) | ||
| .build()); | ||
| return byteString.size(); | ||
| } | ||
|
|
||
| @Override | ||
| public void close() throws IOException { | ||
| outputBuilders.clear(); | ||
| } | ||
|
|
||
| @Override | ||
| public void abort() throws IOException { | ||
| close(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public boolean supportsRestart() { | ||
| return true; | ||
| } | ||
| } |
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