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
  // 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 com.cloud.storage.secondary;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.LogManager;
  
  import com.cloud.agent.Listener;
  import com.cloud.agent.api.AgentControlAnswer;
  import com.cloud.agent.api.AgentControlCommand;
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.Command;
  import com.cloud.agent.api.StartupCommand;
  import com.cloud.agent.api.StartupSecondaryStorageCommand;
  import com.cloud.agent.api.StartupStorageCommand;
  import com.cloud.host.Host;
  import com.cloud.host.Status;
  import com.cloud.storage.Storage;
  
  public class SecondaryStorageListener implements Listener {
      protected Logger logger = LogManager.getLogger(getClass());
  
      SecondaryStorageVmManager _ssVmMgr = null;
  
      public SecondaryStorageListener(SecondaryStorageVmManager ssVmMgr) {
          _ssVmMgr = ssVmMgr;
      }
  
      @Override
      public boolean isRecurring() {
          return true;
      }
  
      @Override
      public boolean processAnswers(long agentId, long seq, Answer[] answers) {
          boolean processed = false;
          if (answers != null) {
              for (int i = 0; i < answers.length; i++) {
              }
          }
  
          return processed;
      }
  
      @Override
      public boolean processCommands(long agentId, long seq, Command[] commands) {
          return false;
      }
  
      @Override
      public AgentControlAnswer processControlCommand(long agentId, AgentControlCommand cmd) {
          return null;
      }
  
      @Override
      public void processHostAdded(long hostId) {
      }
  
      @Override
      public void processConnect(Host agent, StartupCommand cmd, boolean forRebalance) {
          if ((cmd instanceof StartupStorageCommand)) {
              StartupStorageCommand scmd = (StartupStorageCommand)cmd;
              if (scmd.getResourceType() == Storage.StorageResourceType.SECONDARY_STORAGE) {
                  _ssVmMgr.generateSetupCommand(agent.getId());
                  return;
              }
          } else if (cmd instanceof StartupSecondaryStorageCommand) {
              if (logger.isInfoEnabled()) {
                  logger.info("Received a host startup notification " + cmd);
              }
              _ssVmMgr.onAgentConnect(agent.getDataCenterId(), cmd);
              _ssVmMgr.generateSetupCommand(agent.getId());
              _ssVmMgr.generateFirewallConfiguration(agent.getId());
              _ssVmMgr.generateVMSetupCommand(agent.getId());
              return;
          }
          return;
      }
  
      @Override
      public boolean processDisconnect(long agentId, Status state) {
          return true;
      }
  
      @Override
      public void processHostAboutToBeRemoved(long hostId) {
      }
  
      @Override
      public void processHostRemoved(long hostId, long clusterId) {
      }
  
      @Override
      public boolean processTimeout(long agentId, long seq) {
          return true;
      }
  
      @Override
      public int getTimeout() {
          return -1;
      }
  }
  