AdminInitializationService.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * 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.kaaproject.kaa.server.control.service.admin;

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;
import org.kaaproject.kaa.server.node.service.initialization.AbstractInitializationService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.EventListener;

@Service
public class AdminInitializationService extends AbstractInitializationService {

  private static final Logger LOG = LoggerFactory.getLogger(AdminInitializationService.class);

  @Autowired
  private AdminContextLoaderListener adminContextLoaderListener;

  @Value("#{properties[admin_port]}")
  private int adminPort;

  @Value("#{properties[web_xml_file] ?: 'web.xml'}")
  private String webXmlFile;

  private Server server;
  private WebAppContext webAppContext;

  @Override
  public void start() {
    LOG.info("Starting Kaa Admin Web Server...");

    server = new Server(adminPort);
    webAppContext = new WebAppContext();
    webAppContext.setEventListeners(new EventListener[]{adminContextLoaderListener});
    webAppContext.setContextPath("/");
    String webXmlLocation = AdminInitializationService.class.getResource("/admin-web/WEB-INF/"
        + webXmlFile).toString();

    webAppContext.setDescriptor(webXmlLocation);
    String resLocation = AdminInitializationService.class.getResource("/admin-web").toString();
    webAppContext.setResourceBase(resLocation);
    webAppContext.setParentLoaderPriority(true);

    server.setHandler(webAppContext);

    try {
      server.start();
      LOG.info("Kaa Admin Web Server started.");
    } catch (Exception ex) {
      LOG.error("Error starting Kaa Admin Web Server!", ex);
    }
  }

  @Override
  public void stop() {
    try {
      LOG.info("Stopping Kaa Admin Web Server...");
      server.stop();
      webAppContext.destroy();
      LOG.info("Kaa Admin Web Server stopped.");
    } catch (Exception ex) {
      LOG.error("Error stopping Kaa Admin Web Server!", ex);
    }
  }

}