/*
* Copyright 2014-2016 the original author or authors.
*
* Licensed 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.springframework.yarn.boot.support;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.context.embedded.EmbeddedServletContainerInitializedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.data.hadoop.util.net.HostInfoDiscovery;
import org.springframework.data.hadoop.util.net.HostInfoDiscovery.HostInfo;
import org.springframework.web.client.RestTemplate;
import org.springframework.yarn.YarnSystemConstants;
import org.springframework.yarn.boot.actuate.endpoint.mvc.domain.ContainerRegisterResource;
import org.springframework.yarn.support.LifecycleObjectSupport;
/**
* Component which registers itself with container registrar boot endpoint.
*
* @author Janne Valkealahti
*
*/
public class ContainerRegistrar extends LifecycleObjectSupport implements
ApplicationListener<EmbeddedServletContainerInitializedEvent> {
private static final Log log = LogFactory.getLog(ContainerRegistrar.class);
private final String trackUrl;
private final String containerId;
private final HostInfoDiscovery hostInfoDiscovery;
/**
* Instantiates a new container registrar.
*
* @param trackUrl the track url
* @param containerId the container id
* @param hostInfoDiscovery host info discovery
*/
public ContainerRegistrar(String trackUrl, String containerId, HostInfoDiscovery hostInfoDiscovery) {
this.trackUrl = trackUrl;
this.containerId = containerId;
this.hostInfoDiscovery = hostInfoDiscovery;
}
@Override
public void onApplicationEvent(EmbeddedServletContainerInitializedEvent event) {
String namespace = event.getApplicationContext().getNamespace();
if ("management".equals(namespace)) {
return;
}
int port = event.getEmbeddedServletContainer().getPort();
try {
RestTemplate restTemplate = getBeanFactory().getBean(YarnSystemConstants.DEFAULT_ID_RESTTEMPLATE, RestTemplate.class);
HostInfo hostInfo = hostInfoDiscovery.getHostInfo();
String url = "http://" + (hostInfo != null ? hostInfo.getAddress() : "127.0.0.1") + ":" + port;
ContainerRegisterResource request = new ContainerRegisterResource(containerId, url);
log.info("Registering containerId=[" + containerId + "] with url=[" + url + "]");
restTemplate.postForObject(trackUrl + "/yarn_containerregister", request, Object.class);
} catch (Exception e) {
log.warn("Error registering with appmaster", e);
}
}
}