/**
    * 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 org.apache.hadoop.hbase.client;
  
  import java.io.IOException;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.exceptions.PreemptiveFastFailException;
  
  /**
   * Class that acts as a NoOpInterceptor. This class is used in case the
   * {@link RetryingCallerInterceptor} was not configured correctly or an
   * {@link RetryingCallerInterceptor} was never configured in the first place.
   * 
   */
  @InterfaceAudience.Private
  class NoOpRetryableCallerInterceptor extends RetryingCallerInterceptor {
    private static final RetryingCallerInterceptorContext NO_OP_CONTEXT =
        new NoOpRetryingInterceptorContext();
  
    public NoOpRetryableCallerInterceptor() {
    }
  
    public NoOpRetryableCallerInterceptor(Configuration conf) {
      super();
    }
  
    @Override
    public void intercept(
        RetryingCallerInterceptorContext abstractRetryingCallerInterceptorContext)
        throws PreemptiveFastFailException {
    }
  
    @Override
    public void handleFailure(RetryingCallerInterceptorContext context,
        Throwable t) throws IOException {
    }
  
    @Override
    public void updateFailureInfo(RetryingCallerInterceptorContext context) {
    }
  
    @Override
    public RetryingCallerInterceptorContext createEmptyContext() {
      return NO_OP_CONTEXT;
    }
  
    @Override
    public String toString() {
      return "NoOpRetryableCallerInterceptor";
    }
  }