org.apache.hadoop.hdfs.storageservice.Response.java Source code

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Here is the source code for org.apache.hadoop.hdfs.storageservice.Response.java

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/**
 * 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.hdfs.storageservice;

import com.google.common.util.concurrent.AbstractCheckedFuture;
import com.google.common.util.concurrent.ListenableFuture;

import java.io.IOException;

/** Carries all information about NameNode's response to single Request */
public class Response<T> extends AbstractCheckedFuture<T, IOException> {
    public Response(ListenableFuture<T> delegate) {
        super(delegate);
    }

    @Override
    protected IOException mapException(Exception e) {
        if (e instanceof IOException) {
            return (IOException) e;
        }
        return new IOException("Exception while processing request: ", e);
    }
}