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.kubernetes.cluster.actionworkers;
  
  import java.util.List;
  
  import org.apache.logging.log4j.Level;
  import org.apache.cloudstack.api.ApiCommandResourceType;
  import org.apache.cloudstack.context.CallContext;
  
  import com.cloud.exception.ConcurrentOperationException;
  import com.cloud.kubernetes.cluster.KubernetesCluster;
  import com.cloud.kubernetes.cluster.KubernetesClusterManagerImpl;
  import com.cloud.uservm.UserVm;
  import com.cloud.utils.exception.CloudRuntimeException;
  import com.cloud.vm.VirtualMachine;
  
  public class KubernetesClusterStopWorker extends KubernetesClusterActionWorker {
      public KubernetesClusterStopWorker(final KubernetesCluster kubernetesCluster, final KubernetesClusterManagerImpl clusterManager) {
          super(kubernetesCluster, clusterManager);
      }
  
      public boolean stop() throws CloudRuntimeException {
          init();
          if (logger.isInfoEnabled()) {
              logger.info("Stopping Kubernetes cluster: {}", kubernetesCluster);
          }
          stateTransitTo(kubernetesCluster.getId(), KubernetesCluster.Event.StopRequested);
          List<UserVm> clusterVMs = getKubernetesClusterVMs();
          for (UserVm vm : clusterVMs) {
              if (vm == null) {
                  logTransitStateAndThrow(Level.ERROR, String.format("Failed to find all VMs in Kubernetes cluster : %s", kubernetesCluster.getName()), kubernetesCluster.getId(), KubernetesCluster.Event.OperationFailed);
              }
              CallContext vmContext = CallContext.register(CallContext.current(), ApiCommandResourceType.VirtualMachine);
              vmContext.setEventResourceId(vm.getId());
              try {
                  userVmService.stopVirtualMachine(vm.getId(), false);
              } catch (ConcurrentOperationException ex) {
                  logger.warn("Failed to stop VM: {} in Kubernetes cluster: {}", vm, kubernetesCluster, ex);
              } finally {
                  CallContext.unregister();
              }
          }
          for (final UserVm userVm : clusterVMs) {
              UserVm vm = userVmDao.findById(userVm.getId());
              if (vm == null || !vm.getState().equals(VirtualMachine.State.Stopped)) {
                  logTransitStateAndThrow(Level.ERROR, String.format("Failed to stop all VMs in Kubernetes cluster : %s",
                      kubernetesCluster.getName()), kubernetesCluster.getId(), KubernetesCluster.Event.OperationFailed);
              }
          }
          stateTransitTo(kubernetesCluster.getId(), KubernetesCluster.Event.OperationSucceeded);
          return true;
      }
  }
  