org.apache.flink.runtime.rest.handler.legacy.AbstractJobVertexRequestHandler Maven / Gradle / Ivy
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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.flink.runtime.rest.handler.legacy;
import org.apache.flink.runtime.executiongraph.AccessExecutionGraph;
import org.apache.flink.runtime.executiongraph.AccessExecutionJobVertex;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
/**
* Base class for request handlers whose response depends on a specific job vertex (defined
* via the "vertexid" parameter) in a specific job, defined via (defined via the "jobid" parameter).
*/
public abstract class AbstractJobVertexRequestHandler extends AbstractExecutionGraphRequestHandler {
public AbstractJobVertexRequestHandler(ExecutionGraphCache executionGraphHolder, Executor executor) {
super(executionGraphHolder, executor);
}
@Override
public final CompletableFuture handleRequest(AccessExecutionGraph graph, Map params) {
final JobVertexID vid = parseJobVertexId(params);
final AccessExecutionJobVertex jobVertex = graph.getJobVertex(vid);
if (jobVertex == null) {
throw new IllegalArgumentException("No vertex with ID '" + vid + "' exists.");
}
return handleRequest(jobVertex, params);
}
/**
* Returns the job vertex ID parsed from the provided parameters.
*
* @param params Path parameters
* @return Parsed job vertex ID or null
if not available.
*/
public static JobVertexID parseJobVertexId(Map params) {
String jobVertexIdParam = params.get("vertexid");
if (jobVertexIdParam == null) {
return null;
}
try {
return JobVertexID.fromHexString(jobVertexIdParam);
} catch (RuntimeException ignored) {
return null;
}
}
public abstract CompletableFuture handleRequest(AccessExecutionJobVertex jobVertex, Map params);
}