org.apache.flink.runtime.rest.handler.job.metrics.JobVertexWatermarksHandler 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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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.flink.runtime.rest.handler.job.metrics;
import org.apache.flink.api.common.JobID;
import org.apache.flink.api.common.time.Time;
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.metrics.MetricNames;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.handler.job.AbstractJobVertexHandler;
import org.apache.flink.runtime.rest.handler.legacy.ExecutionGraphCache;
import org.apache.flink.runtime.rest.handler.legacy.metrics.MetricFetcher;
import org.apache.flink.runtime.rest.handler.legacy.metrics.MetricStore;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.JobIDPathParameter;
import org.apache.flink.runtime.rest.messages.JobVertexMessageParameters;
import org.apache.flink.runtime.rest.messages.job.metrics.JobVertexWatermarksHeaders;
import org.apache.flink.runtime.rest.messages.job.metrics.Metric;
import org.apache.flink.runtime.rest.messages.job.metrics.MetricCollectionResponseBody;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
/**
* Handler that returns the watermarks given a {@link JobID} and {@link JobVertexID}.
*/
public class JobVertexWatermarksHandler extends AbstractJobVertexHandler {
private final MetricFetcher metricFetcher;
public JobVertexWatermarksHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MetricFetcher metricFetcher,
ExecutionGraphCache executionGraphCache,
Executor executor) {
super(leaderRetriever,
timeout,
responseHeaders,
JobVertexWatermarksHeaders.INSTANCE,
executionGraphCache,
executor);
this.metricFetcher = metricFetcher;
}
@Override
protected MetricCollectionResponseBody handleRequest(
HandlerRequest request,
AccessExecutionJobVertex jobVertex) throws RestHandlerException {
String jobID = request.getPathParameter(JobIDPathParameter.class).toString();
String taskID = jobVertex.getJobVertexId().toString();
metricFetcher.update();
MetricStore.TaskMetricStore taskMetricStore = metricFetcher.getMetricStore().getTaskMetricStore(jobID, taskID);
if (taskMetricStore == null) {
return new MetricCollectionResponseBody(Collections.emptyList());
}
AccessExecutionVertex[] taskVertices = jobVertex.getTaskVertices();
List metrics = new ArrayList<>(taskVertices.length);
for (AccessExecutionVertex taskVertex : taskVertices) {
String id = taskVertex.getParallelSubtaskIndex() + "." + MetricNames.IO_CURRENT_INPUT_WATERMARK;
String watermarkValue = taskMetricStore.getMetric(id);
if (watermarkValue != null) {
metrics.add(new Metric(id, watermarkValue));
}
}
return new MetricCollectionResponseBody(metrics);
}
}