001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import java.io.IOException;
021
022import org.apache.hadoop.conf.Configuration;
023import org.apache.yetus.audience.InterfaceAudience;
024import org.apache.hadoop.hbase.exceptions.PreemptiveFastFailException;
025
026/**
027 * Class that acts as a NoOpInterceptor. This class is used in case the
028 * RetryingCallerInterceptor was not configured correctly or an
029 * RetryingCallerInterceptor was never configured in the first place.
030 *
031 */
032@InterfaceAudience.Private
033class NoOpRetryableCallerInterceptor extends RetryingCallerInterceptor {
034  private static final RetryingCallerInterceptorContext NO_OP_CONTEXT =
035      new NoOpRetryingInterceptorContext();
036
037  public NoOpRetryableCallerInterceptor() {
038  }
039
040  public NoOpRetryableCallerInterceptor(Configuration conf) {
041    super();
042  }
043
044  @Override
045  public void intercept(
046      RetryingCallerInterceptorContext abstractRetryingCallerInterceptorContext)
047      throws PreemptiveFastFailException {
048  }
049
050  @Override
051  public void handleFailure(RetryingCallerInterceptorContext context,
052      Throwable t) throws IOException {
053  }
054
055  @Override
056  public void updateFailureInfo(RetryingCallerInterceptorContext context) {
057  }
058
059  @Override
060  public RetryingCallerInterceptorContext createEmptyContext() {
061    return NO_OP_CONTEXT;
062  }
063
064  @Override
065  public String toString() {
066    return "NoOpRetryableCallerInterceptor";
067  }
068}