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 backtype.storm.utils;
  
  import java.util.Map;
  
  import java.util.concurrent.atomic.AtomicBoolean;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.alibaba.jstorm.cluster.StormConfig;
  
  import backtype.storm.LocalCluster;
  import backtype.storm.generated.Nimbus.Iface;
  
  public class NimbusClientWrapper implements StormObject {
      private static final Logger LOG = LoggerFactory.getLogger(NimbusClientWrapper.class);
      private final AtomicBoolean isValid = new AtomicBoolean(true);
  
      Iface client;
      NimbusClient remoteClient;
      Map conf;
      boolean isLocal = false;
  
      @Override
      public void init(Map conf) throws Exception {
          this.conf = conf;
          isLocal = StormConfig.try_local_mode(conf);
  
          if (isLocal) {
              client = LocalCluster.getInstance().getLocalClusterMap().getNimbus();
          } else {
              remoteClient = NimbusClient.getConfiguredClient(conf);
              client = remoteClient.getClient();
          }
          isValid.set(true);
      }
  
      public void invalidate() {
          isValid.set(false);
      }
  
      public boolean isValid() {
          return this.isValid.get();
      }
  
      @Override
      public void cleanup() {
          invalidate();
          if (remoteClient != null) {
              remoteClient.close();
          }
      }
  
      public Iface getClient() {
          return client;
      }
  
      public void reconnect() {
          cleanup();
          try {
              init(this.conf);
          } catch (Exception ex) {
              LOG.error("reconnect error, maybe nimbus is not alive.", ex);
          }
      }
  
  }
  