/*
* 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.webmonitor.handlers;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.instance.ActorGateway;
import org.apache.flink.runtime.messages.JobManagerMessages;
import org.apache.flink.util.StringUtils;
import java.util.Map;
/**
* Request handler for the CANCEL request.
*/
public class JobCancellationHandler extends AbstractJsonRequestHandler {
private static final String JOB_CONCELLATION_REST_PATH = "/jobs/:jobid/cancel";
private static final String JOB_CONCELLATION_YARN_REST_PATH = "/jobs/:jobid/yarn-cancel";
@Override
public String[] getPaths() {
return new String[]{JOB_CONCELLATION_REST_PATH, JOB_CONCELLATION_YARN_REST_PATH};
}
@Override
public String handleJsonRequest(Map<String, String> pathParams, Map<String, String> queryParams, ActorGateway jobManager) throws Exception {
try {
JobID jobid = new JobID(StringUtils.hexStringToByte(pathParams.get("jobid")));
if (jobManager != null) {
jobManager.tell(new JobManagerMessages.CancelJob(jobid));
return "{}";
}
else {
throw new Exception("No connection to the leading JobManager.");
}
}
catch (Exception e) {
throw new Exception("Failed to cancel the job with id: " + pathParams.get("jobid") + e.getMessage(), e);
}
}
}