CloseableThriftClient.java

/*
 * Copyright © 2015 Cask Data, Inc.
 *
 * Licensed 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 co.cask.tephra.distributed;

/**
 * An {@link AutoCloseable} to automatically return the thrift client to the ThriftClientProvider.
 */
public class CloseableThriftClient implements AutoCloseable {

  private final ThriftClientProvider provider;
  private final TransactionServiceThriftClient thriftClient;

  public CloseableThriftClient(ThriftClientProvider provider, TransactionServiceThriftClient thriftClient) {
    this.provider = provider;
    this.thriftClient = thriftClient;
  }

  public TransactionServiceThriftClient getThriftClient() {
    return thriftClient;
  }

  @Override
  public void close() {
    // in any case, the client must be returned to the pool. The pool is
    // responsible for discarding the client if it is in a bad state.
    provider.returnClient(thriftClient);
  }
}