org.apache.flink.runtime.rest.handler.taskmanager.JobTaskManagersHandler Maven / Gradle / Ivy
/*
* 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.flink.runtime.rest.handler.taskmanager;
import org.apache.flink.api.common.JobID;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.executiongraph.AccessExecutionGraph;
import org.apache.flink.runtime.executiongraph.AccessExecutionJobVertex;
import org.apache.flink.runtime.executiongraph.AccessExecutionVertex;
import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
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.JobIDPathParameter;
import org.apache.flink.runtime.rest.messages.JobMessageParameters;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerInfo;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagersInfo;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import javax.annotation.Nonnull;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
/**
* Returns an overview over all registered TaskManagers of the job.
*/
public class JobTaskManagersHandler extends AbstractTaskManagerHandler {
private final ExecutionGraphCache executionGraphCache;
private final GatewayRetriever leaderRetriever;
public JobTaskManagersHandler(
CompletableFuture localRestAddress,
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MessageHeaders messageHeaders,
GatewayRetriever resourceManagerGatewayRetriever,
ExecutionGraphCache executionGraphCache) {
super(
localRestAddress,
leaderRetriever,
timeout,
responseHeaders,
messageHeaders,
resourceManagerGatewayRetriever);
this.executionGraphCache = executionGraphCache;
this.leaderRetriever = leaderRetriever;
}
@Override
protected CompletableFuture handleRequest(@Nonnull HandlerRequest request, @Nonnull ResourceManagerGateway gateway) throws RestHandlerException {
JobID jobId = request.getPathParameter(JobIDPathParameter.class);
CompletableFuture> taskManagerInfosFuture = gateway.requestTaskManagerInfo(timeout);
RestfulGateway restfulGateway = leaderRetriever.getNow().get();
return taskManagerInfosFuture.thenApply(taskManagerInfos -> getJobTaskManagerInfo(taskManagerInfos, jobId, executionGraphCache, restfulGateway));
}
private static TaskManagersInfo getJobTaskManagerInfo(Collection taskManagerInfos, JobID jobId, ExecutionGraphCache executionGraphCache, RestfulGateway restfulGateway){
AccessExecutionGraph executionGraph = null;
Collection jobTaskManagerInfos = new HashSet<>();
Map resourceId2taskManagerInfo = new HashMap<>();
TaskManagersInfo tms;
try {
executionGraph = executionGraphCache.getExecutionGraph(jobId, restfulGateway).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
if (executionGraph != null) {
for (TaskManagerInfo t : taskManagerInfos) {
resourceId2taskManagerInfo.put(t.getResourceId().toString(), t);
}
for (AccessExecutionJobVertex vertex : executionGraph.getVerticesTopologically()) {
for (AccessExecutionVertex task : vertex.getTaskVertices()) {
TaskManagerLocation taskManagerLocation = task.getCurrentAssignedResourceLocation();
if (taskManagerLocation == null) {
continue;
} else {
ResourceID tmId = taskManagerLocation.getResourceID();
TaskManagerInfo taskManagerInfo = resourceId2taskManagerInfo.get(tmId.toString());
if (taskManagerInfo != null) {
jobTaskManagerInfos.add(taskManagerInfo);
}
}
}
}
}
tms = new TaskManagersInfo(jobTaskManagerInfos);
return tms;
}
}