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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.server;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TTransport;
/**
* Interface that can handle events from the server core. To use this you should subclass it and
* implement the methods that you care about. Your subclass can also store local data that you may
* care about, such as additional "arguments" to these methods (stored in the object instance's
* state).
*
* <p>TODO: It seems this is a custom code entry point created for some resource management purpose
* in hive. But when looking into hive code, we see that the argments of TProtocol and TTransport
* are never used. We probably should remove these arguments from all the methods.
*/
public interface TServerEventHandler {
/** Called before the server begins. */
void preServe();
/** Called when a new client has connected and is about to being processing. */
ServerContext createContext(TProtocol input, TProtocol output);
/** Called when a client has finished request-handling to delete server context. */
void deleteContext(ServerContext serverContext, TProtocol input, TProtocol output);
/** Called when a client is about to call the processor. */
void processContext(
ServerContext serverContext, TTransport inputTransport, TTransport outputTransport);
}
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