org.springframework.yarn.boot.support.ContainerRegistrar.java Source code

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Here is the source code for org.springframework.yarn.boot.support.ContainerRegistrar.java

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/*
 * Copyright 2014 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.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
import org.springframework.yarn.boot.actuate.endpoint.mvc.domain.ContainerRegisterResource;
import org.springframework.yarn.support.LifecycleObjectSupport;
import org.springframework.yarn.support.NetworkUtils;

/**
 * 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 String trackUrl;

    private String containerId;

    /**
     * Instantiates a new container registrar.
     *
     * @param trackUrl the track url
     * @param containerId the container id
     */
    public ContainerRegistrar(String trackUrl, String containerId) {
        this.trackUrl = trackUrl;
        this.containerId = containerId;
    }

    @Override
    public void onApplicationEvent(EmbeddedServletContainerInitializedEvent event) {
        String namespace = event.getApplicationContext().getNamespace();
        if ("management".equals(namespace)) {
            return;
        }

        int port = event.getEmbeddedServletContainer().getPort();
        try {
            // TODO: need to integrate auth
            // TODO: need to handle proper network address
            RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory());
            String url = "http://" + NetworkUtils.getDefaultAddress() + ":" + 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);
        }

    }

}