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/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.springframework.yarn.rpc;
import java.io.IOException;
import org.apache.hadoop.yarn.exceptions.YarnException;
/**
* Simple helper interface to execute methods via callbacks.
*
* @author Janne Valkealahti
*
* @param Type of the return value
* @param Type of the rpc protocol
*/
public interface YarnRpcCallback {
/**
* Execute callback.
*
* @param proxy rpc proxy instance
* @return Value returned by callback
* @throws YarnException YarnException
* @throws IOException IOException
*/
T doInYarn(P proxy) throws YarnException, IOException;
}