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.resource;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.naming.ConfigurationException;
  
  
  import org.apache.cloudstack.storage.resource.NfsSecondaryStorageResource;
  import org.apache.cloudstack.storage.resource.SecondaryStorageResourceHandler;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.Command;
  import com.cloud.hypervisor.Hypervisor;
  
  public class PremiumSecondaryStorageResource extends NfsSecondaryStorageResource {
  
  
      private Map<Hypervisor.HypervisorType, SecondaryStorageResourceHandler> _handlers = new HashMap<Hypervisor.HypervisorType, SecondaryStorageResourceHandler>();
  
      private Map<String, String> _activeOutgoingAddresses = new HashMap<String, String>();
  
      @Override
      public Answer executeRequest(Command cmd) {
          String hypervisor = cmd.getContextParam("hypervisor");
          if (hypervisor != null) {
              Hypervisor.HypervisorType hypervisorType = Hypervisor.HypervisorType.getType(hypervisor);
              if (hypervisorType == null) {
                  logger.error("Unsupported hypervisor type in command context, hypervisor: " + hypervisor);
                  return defaultAction(cmd);
              }
  
              SecondaryStorageResourceHandler handler = getHandler(hypervisorType);
              if (handler == null) {
                  logger.error("No handler can be found for hypervisor type in command context, hypervisor: " + hypervisor);
                  return defaultAction(cmd);
              }
  
              return handler.executeRequest(cmd);
          }
  
          return defaultAction(cmd);
      }
  
      public Answer defaultAction(Command cmd) {
          return super.executeRequest(cmd);
      }
  
      public void ensureOutgoingRuleForAddress(String address) {
          if (address == null || address.isEmpty() || address.startsWith("0.0.0.0")) {
              if (logger.isInfoEnabled())
                  logger.info("Drop invalid dynamic route/firewall entry " + address);
              return;
          }
  
          boolean needToSetRule = false;
          synchronized (_activeOutgoingAddresses) {
              if (!_activeOutgoingAddresses.containsKey(address)) {
                  _activeOutgoingAddresses.put(address, address);
                  needToSetRule = true;
              }
          }
  
          if (needToSetRule) {
              if (logger.isInfoEnabled())
                  logger.info("Add dynamic route/firewall entry for " + address);
              allowOutgoingOnPrivate(address);
          }
      }
  
      private void registerHandler(Hypervisor.HypervisorType hypervisorType, SecondaryStorageResourceHandler handler) {
          _handlers.put(hypervisorType, handler);
      }
  
      private SecondaryStorageResourceHandler getHandler(Hypervisor.HypervisorType hypervisorType) {
          return _handlers.get(hypervisorType);
      }
  
      @Override
      public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
          super.configure(name, params);
  
          if (_inSystemVM) {
              VmwareSecondaryStorageContextFactory.initFactoryEnvironment();
          }
  
          String nfsVersion = NfsSecondaryStorageResource.retrieveNfsVersionFromParams(params);
          registerHandler(Hypervisor.HypervisorType.VMware, new VmwareSecondaryStorageResourceHandler(this, nfsVersion));
          return true;
      }
  }
  