/**
* 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);
}
}