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.hypervisor.kvm.resource.wrapper;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.DeleteStoragePoolCommand;
  import com.cloud.agent.api.to.StorageFilerTO;
  import com.cloud.agent.dao.impl.PropertiesStorage;
  import com.cloud.agent.properties.AgentProperties;
  import com.cloud.agent.properties.AgentPropertiesFileHandler;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.storage.Storage;
  import com.cloud.utils.exception.CloudRuntimeException;
  
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.stream.Collectors;
  
  @ResourceWrapper(handles =  DeleteStoragePoolCommand.class)
  public final class LibvirtDeleteStoragePoolCommandWrapper extends CommandWrapper<DeleteStoragePoolCommand, Answer, LibvirtComputingResource> {
      @Override
      public Answer execute(final DeleteStoragePoolCommand command, final LibvirtComputingResource libvirtComputingResource) {
          try {
              // if getRemoveDatastore() is true, then we are dealing with managed storage and can skip the delete logic here
              if (!command.getRemoveDatastore()) {
                  handleStoragePoolDeletion(command, libvirtComputingResource);
              }
              return new Answer(command);
          } catch (final CloudRuntimeException e) {
              return new Answer(command, false, e.toString());
          }
      }
  
      private void handleStoragePoolDeletion(final DeleteStoragePoolCommand command, final LibvirtComputingResource libvirtComputingResource) {
          final StorageFilerTO pool = command.getPool();
          final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
          storagePoolMgr.deleteStoragePool(pool.getType(), pool.getUuid());
  
          if (isLocalStorageAndNotHavingDefaultPath(pool, libvirtComputingResource)) {
              updateLocalStorageProperties(pool);
          }
      }
  
      private boolean isLocalStorageAndNotHavingDefaultPath(final StorageFilerTO pool, final LibvirtComputingResource libvirtComputingResource) {
          return Storage.StoragePoolType.Filesystem.equals(pool.getType())
                  && !libvirtComputingResource.DEFAULT_LOCAL_STORAGE_PATH.equals(pool.getPath());
      }
  
      private void updateLocalStorageProperties(final StorageFilerTO pool) {
          String localStoragePath = AgentPropertiesFileHandler.getPropertyValue(AgentProperties.LOCAL_STORAGE_PATH);
          String localStorageUuid = AgentPropertiesFileHandler.getPropertyValue(AgentProperties.LOCAL_STORAGE_UUID);
  
          String uuidToRemove = pool.getUuid();
          String pathToRemove = pool.getPath();
  
          if (localStorageUuid != null && uuidToRemove != null) {
              localStorageUuid = Arrays.stream(localStorageUuid.split(","))
                      .filter(uuid -> !uuid.equals(uuidToRemove))
                      .collect(Collectors.joining(","));
          }
  
          if (localStoragePath != null && pathToRemove != null) {
              localStoragePath = Arrays.stream(localStoragePath.split(","))
                      .filter(path -> !path.equals(pathToRemove))
                      .collect(Collectors.joining(","));
          }
  
          PropertiesStorage agentProperties = new PropertiesStorage();
          agentProperties.configure("AgentProperties", new HashMap<String, Object>());
  
          if (localStorageUuid != null) {
              agentProperties.persist(AgentProperties.LOCAL_STORAGE_UUID.getName(), localStorageUuid);
          }
  
          if (localStoragePath != null) {
              agentProperties.persist(AgentProperties.LOCAL_STORAGE_PATH.getName(), localStoragePath);
          }
      }
  }
  