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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.thrift.async;
/**
* A handler interface asynchronous clients can implement to receive future notice of the results of
* an asynchronous method call.
*
* @param <T> The return type of the asynchronously invoked method.
*/
public interface AsyncMethodCallback<T> {
/**
* This method will be called when the remote side has completed invoking your method call and the
* result is fully read. For {@code oneway} method calls, this method will be called as soon as we
* have completed writing out the request.
*
* @param response The return value of the asynchronously invoked method; {@code null} for void
* methods which includes {@code oneway} methods.
*/
void onComplete(T response);
/**
* This method will be called when there is either an unexpected client-side exception like an
* IOException or else when the remote method raises an exception, either declared in the IDL or
* due to an unexpected server-side error.
*
* @param exception The exception encountered processing the the asynchronous method call, may be
* a local exception or an unmarshalled remote exception.
*/
void onError(Exception exception);
}
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