content: // 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
  // 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 com.cloud.usage;
  
  import org.apache.commons.daemon.Daemon;
  import org.apache.commons.daemon.DaemonContext;
  import org.apache.commons.daemon.DaemonInitException;
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.LogManager;
  import org.springframework.context.support.ClassPathXmlApplicationContext;
  
  import com.cloud.utils.LogUtils;
  import com.cloud.utils.component.ComponentContext;
  
  public class UsageServer implements Daemon {
      protected Logger logger = LogManager.getLogger(getClass());
      public static final String Name = "usage-server";
  
      private UsageManager mgr;
      private ClassPathXmlApplicationContext appContext;
  
      /**
       * @param args
       */
      public static void main(String[] args) {
          initLog4j();
          UsageServer usage = new UsageServer();
          usage.start();
      }
  
      @Override
      public void init(DaemonContext arg0) throws DaemonInitException, Exception {
          initLog4j();
      }
  
      @Override
      public void start() {
  
          appContext = new ClassPathXmlApplicationContext("usageApplicationContext.xml");
  
          ComponentContext.initComponentsLifeCycle();
  
          mgr = appContext.getBean(UsageManager.class);
  
          if (mgr != null) {
              if (logger.isInfoEnabled()) {
                  logger.info("UsageServer ready...");
              }
          }
      }
  
      @Override
      public void stop() {
          appContext.close();
      }
  
      @Override
      public void destroy() {
  
      }
  
      static private void initLog4j() {
          LogUtils.initLog4j("log4j-cloud.xml");
      }
  
  }
  