org.apache.flink.runtime.rest.handler.job.SubtasksAllAccumulatorsHandler Maven / Gradle / Ivy
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* 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
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package org.apache.flink.runtime.rest.handler.job;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.accumulators.StringifiedAccumulatorResult;
import org.apache.flink.runtime.executiongraph.AccessExecutionJobVertex;
import org.apache.flink.runtime.executiongraph.AccessExecutionVertex;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.handler.legacy.ExecutionGraphCache;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.JobVertexMessageParameters;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.rest.messages.job.SubtasksAllAccumulatorsInfo;
import org.apache.flink.runtime.rest.messages.job.UserAccumulator;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
/**
* Request handler for the subtasks all accumulators.
*/
public class SubtasksAllAccumulatorsHandler extends AbstractJobVertexHandler {
public SubtasksAllAccumulatorsHandler(GatewayRetriever leaderRetriever, Time timeout, Map responseHeaders, MessageHeaders messageHeaders, ExecutionGraphCache executionGraphCache, Executor executor) {
super(leaderRetriever, timeout, responseHeaders, messageHeaders, executionGraphCache, executor);
}
@Override
protected SubtasksAllAccumulatorsInfo handleRequest(HandlerRequest request, AccessExecutionJobVertex jobVertex) throws RestHandlerException {
JobVertexID jobVertexId = jobVertex.getJobVertexId();
int parallelism = jobVertex.getParallelism();
final List subtaskAccumulatorsInfos = new ArrayList<>();
for (AccessExecutionVertex vertex : jobVertex.getTaskVertices()) {
TaskManagerLocation location = vertex.getCurrentAssignedResourceLocation();
String locationString = location == null ? "(unassigned)" : location.getHostname();
StringifiedAccumulatorResult[] accs = vertex.getCurrentExecutionAttempt().getUserAccumulatorsStringified();
List userAccumulators = new ArrayList<>(accs.length);
for (StringifiedAccumulatorResult acc : accs) {
userAccumulators.add(new UserAccumulator(acc.getName(), acc.getType(), acc.getValue()));
}
subtaskAccumulatorsInfos.add(
new SubtasksAllAccumulatorsInfo.SubtaskAccumulatorsInfo(
vertex.getCurrentExecutionAttempt().getParallelSubtaskIndex(),
vertex.getCurrentExecutionAttempt().getAttemptNumber(),
locationString,
userAccumulators
));
}
return new SubtasksAllAccumulatorsInfo(jobVertexId, parallelism, subtaskAccumulatorsInfos);
}
}