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
   *
   *    https://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 org.apache.bigtop.manager.server.command.task;
  
  import org.apache.bigtop.manager.common.constants.MessageConstants;
  import org.apache.bigtop.manager.common.enums.Command;
  import org.apache.bigtop.manager.grpc.generated.HostCheckReply;
  import org.apache.bigtop.manager.grpc.generated.HostCheckRequest;
  import org.apache.bigtop.manager.grpc.generated.HostCheckServiceGrpc;
  import org.apache.bigtop.manager.server.grpc.GrpcClient;
  
  public class HostCheckTask extends AbstractTask {
  
      public HostCheckTask(TaskContext taskContext) {
          super(taskContext);
      }
  
      @Override
      protected Command getCommand() {
          return Command.CUSTOM;
      }
  
      @Override
      protected String getCustomCommand() {
          return "check_host";
      }
  
      @Override
      protected Boolean doRun(String hostname, Integer grpcPort) {
          HostCheckRequest.Builder builder = HostCheckRequest.newBuilder();
          builder.setTaskId(getTaskPO().getId());
          HostCheckRequest request = builder.build();
  
          HostCheckServiceGrpc.HostCheckServiceBlockingStub stub =
                  GrpcClient.getBlockingStub(hostname, grpcPort, HostCheckServiceGrpc.HostCheckServiceBlockingStub.class);
          HostCheckReply reply = stub.check(request);
  
          return reply != null && reply.getCode() == MessageConstants.SUCCESS_CODE;
      }
  
      @Override
      public String getName() {
          return "Check host " + taskContext.getHostname();
      }
  }
  