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.agent.grpc.service;
  
  import org.apache.bigtop.manager.common.constants.MessageConstants;
  import org.apache.bigtop.manager.common.shell.ShellResult;
  import org.apache.bigtop.manager.common.utils.Environments;
  import org.apache.bigtop.manager.common.utils.os.TimeSyncDetection;
  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 io.grpc.stub.StreamObserver;
  import lombok.extern.slf4j.Slf4j;
  import net.devh.boot.grpc.server.service.GrpcService;
  
  import java.util.List;
  import java.util.function.Supplier;
  
  @Slf4j
  @GrpcService
  public class HostCheckServiceGrpcImpl extends HostCheckServiceGrpc.HostCheckServiceImplBase {
  
      @Override
      public void check(HostCheckRequest request, StreamObserver<HostCheckReply> responseObserver) {
          try {
              if (Environments.isDevMode()) {
                  HostCheckReply reply = HostCheckReply.newBuilder()
                          .setCode(MessageConstants.SUCCESS_CODE)
                          .build();
                  responseObserver.onNext(reply);
                  responseObserver.onCompleted();
                  return;
              }
  
              ShellResult shellResult = runChecks(List.of(this::checkTimeSync));
              HostCheckReply reply = HostCheckReply.newBuilder()
                      .setCode(shellResult.getExitCode())
                      .build();
              responseObserver.onNext(reply);
              responseObserver.onCompleted();
          } catch (Exception e) {
              log.error("Error when running host check", e);
              responseObserver.onError(e);
          }
      }
  
      private ShellResult runChecks(List<Supplier<ShellResult>> suppliers) {
          ShellResult shellResult = ShellResult.success();
          for (Supplier<ShellResult> supplier : suppliers) {
              shellResult = supplier.get();
              if (shellResult.getExitCode() != MessageConstants.SUCCESS_CODE) {
                  return shellResult;
              }
          }
  
          return shellResult;
      }
  
      private ShellResult checkTimeSync() {
          return TimeSyncDetection.checkTimeSync();
      }
  }
  