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;
021import org.apache.hadoop.conf.Configuration;
022import org.apache.hadoop.hbase.exceptions.PreemptiveFastFailException;
023import org.apache.yetus.audience.InterfaceAudience;
024
025/**
026 * Class that acts as a NoOpInterceptor. This class is used in case the RetryingCallerInterceptor
027 * was not configured correctly or an RetryingCallerInterceptor was never configured in the first
028 * place.
029 */
030@InterfaceAudience.Private
031class NoOpRetryableCallerInterceptor extends RetryingCallerInterceptor {
032  private static final RetryingCallerInterceptorContext NO_OP_CONTEXT =
033    new NoOpRetryingInterceptorContext();
034
035  public NoOpRetryableCallerInterceptor() {
036  }
037
038  public NoOpRetryableCallerInterceptor(Configuration conf) {
039    super();
040  }
041
042  @Override
043  public void intercept(RetryingCallerInterceptorContext abstractRetryingCallerInterceptorContext)
044    throws PreemptiveFastFailException {
045  }
046
047  @Override
048  public void handleFailure(RetryingCallerInterceptorContext context, Throwable t)
049    throws IOException {
050  }
051
052  @Override
053  public void updateFailureInfo(RetryingCallerInterceptorContext context) {
054  }
055
056  @Override
057  public RetryingCallerInterceptorContext createEmptyContext() {
058    return NO_OP_CONTEXT;
059  }
060
061  @Override
062  public String toString() {
063    return "NoOpRetryableCallerInterceptor";
064  }
065}