/*
* 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 java.io.IOException;
import java.io.StringWriter;
import java.util.Map;
import com.fasterxml.jackson.core.JsonGenerator;
import org.apache.flink.api.common.ArchivedExecutionConfig;
import org.apache.flink.runtime.executiongraph.AccessExecutionGraph;
import org.apache.flink.runtime.webmonitor.ExecutionGraphHolder;
import org.apache.flink.runtime.webmonitor.history.ArchivedJson;
import org.apache.flink.runtime.webmonitor.history.JsonArchivist;
import java.util.Collection;
import java.util.Collections;
/**
* Request handler that returns the execution config of a job.
*/
public class JobConfigHandler extends AbstractExecutionGraphRequestHandler {
private static final String JOB_CONFIG_REST_PATH = "/jobs/:jobid/config";
public JobConfigHandler(ExecutionGraphHolder executionGraphHolder) {
super(executionGraphHolder);
}
@Override
public String[] getPaths() {
return new String[]{JOB_CONFIG_REST_PATH};
}
@Override
public String handleRequest(AccessExecutionGraph graph, Map<String, String> params) throws Exception {
return createJobConfigJson(graph);
}
public static class JobConfigJsonArchivist implements JsonArchivist {
@Override
public Collection<ArchivedJson> archiveJsonWithPath(AccessExecutionGraph graph) throws IOException {
String json = createJobConfigJson(graph);
String path = JOB_CONFIG_REST_PATH
.replace(":jobid", graph.getJobID().toString());
return Collections.singletonList(new ArchivedJson(path, json));
}
}
public static String createJobConfigJson(AccessExecutionGraph graph) throws IOException {
StringWriter writer = new StringWriter();
JsonGenerator gen = JsonFactory.jacksonFactory.createGenerator(writer);
gen.writeStartObject();
gen.writeStringField("jid", graph.getJobID().toString());
gen.writeStringField("name", graph.getJobName());
final ArchivedExecutionConfig summary = graph.getArchivedExecutionConfig();
if (summary != null) {
gen.writeObjectFieldStart("execution-config");
gen.writeStringField("execution-mode", summary.getExecutionMode());
gen.writeStringField("restart-strategy", summary.getRestartStrategyDescription());
gen.writeNumberField("job-parallelism", summary.getParallelism());
gen.writeBooleanField("object-reuse-mode", summary.getObjectReuseEnabled());
Map<String, String> ucVals = summary.getGlobalJobParameters();
if (ucVals != null) {
gen.writeObjectFieldStart("user-config");
for (Map.Entry<String, String> ucVal : ucVals.entrySet()) {
gen.writeStringField(ucVal.getKey(), ucVal.getValue());
}
gen.writeEndObject();
}
gen.writeEndObject();
}
gen.writeEndObject();
gen.close();
return writer.toString();
}
}