/**
* 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.hadoop.yarn.client.api.impl;
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import javax.ws.rs.core.MediaType;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.timeline.TimelineEntities;
import org.apache.hadoop.yarn.api.records.timeline.TimelineEntity;
import org.apache.hadoop.yarn.api.records.timeline.TimelinePutResponse;
import org.apache.hadoop.yarn.client.api.TimelineClient;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.webapp.YarnJacksonJaxbJsonProvider;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Joiner;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
@Private
@Unstable
public class TimelineClientImpl extends TimelineClient {
private static final Log LOG = LogFactory.getLog(TimelineClientImpl.class);
private static final String RESOURCE_URI_STR = "/ws/v1/timeline/";
private static final Joiner JOINER = Joiner.on("");
private Client client;
private URI resURI;
private boolean isEnabled;
public TimelineClientImpl() {
super(TimelineClientImpl.class.getName());
ClientConfig cc = new DefaultClientConfig();
cc.getClasses().add(YarnJacksonJaxbJsonProvider.class);
client = Client.create(cc);
}
protected void serviceInit(Configuration conf) throws Exception {
isEnabled = conf.getBoolean(
YarnConfiguration.TIMELINE_SERVICE_ENABLED,
YarnConfiguration.DEFAULT_TIMELINE_SERVICE_ENABLED);
if (!isEnabled) {
LOG.info("Timeline service is not enabled");
} else {
if (YarnConfiguration.useHttps(conf)) {
resURI = URI
.create(JOINER.join("https://", conf.get(
YarnConfiguration.TIMELINE_SERVICE_WEBAPP_HTTPS_ADDRESS,
YarnConfiguration.DEFAULT_TIMELINE_SERVICE_WEBAPP_HTTPS_ADDRESS),
RESOURCE_URI_STR));
} else {
resURI = URI.create(JOINER.join("http://", conf.get(
YarnConfiguration.TIMELINE_SERVICE_WEBAPP_ADDRESS,
YarnConfiguration.DEFAULT_TIMELINE_SERVICE_WEBAPP_ADDRESS),
RESOURCE_URI_STR));
}
LOG.info("Timeline service address: " + resURI);
}
super.serviceInit(conf);
}
@Override
public TimelinePutResponse putEntities(
TimelineEntity... entities) throws IOException, YarnException {
if (!isEnabled) {
if (LOG.isDebugEnabled()) {
LOG.debug("Nothing will be put because timeline service is not enabled");
}
return new TimelinePutResponse();
}
TimelineEntities entitiesContainer = new TimelineEntities();
entitiesContainer.addEntities(Arrays.asList(entities));
ClientResponse resp;
try {
resp = doPostingEntities(entitiesContainer);
} catch (RuntimeException re) {
// runtime exception is expected if the client cannot connect the server
String msg =
"Failed to get the response from the timeline server.";
LOG.error(msg, re);
throw re;
}
if (resp == null ||
resp.getClientResponseStatus() != ClientResponse.Status.OK) {
String msg =
"Failed to get the response from the timeline server.";
LOG.error(msg);
if (LOG.isDebugEnabled() && resp != null) {
String output = resp.getEntity(String.class);
LOG.debug("HTTP error code: " + resp.getStatus()
+ " Server response : \n" + output);
}
throw new YarnException(msg);
}
return resp.getEntity(TimelinePutResponse.class);
}
@Private
@VisibleForTesting
public ClientResponse doPostingEntities(TimelineEntities entities) {
WebResource webResource = client.resource(resURI);
return webResource.accept(MediaType.APPLICATION_JSON)
.type(MediaType.APPLICATION_JSON)
.post(ClientResponse.class, entities);
}
}