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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.drill.exec.rpc;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.EventLoopGroup;
import io.netty.util.concurrent.GenericFutureListener;
import org.apache.drill.exec.memory.BufferAllocator;
import org.apache.drill.exec.rpc.BasicClientWithConnection.ServerConnection;
import org.apache.drill.exec.rpc.user.ConnectionThrottle;
import com.google.protobuf.Internal.EnumLite;
import com.google.protobuf.MessageLite;
import com.google.protobuf.Parser;
public abstract class BasicClientWithConnection<T extends EnumLite, HANDSHAKE_SEND extends MessageLite, HANDSHAKE_RESPONSE extends MessageLite> extends BasicClient<T, ServerConnection, HANDSHAKE_SEND, HANDSHAKE_RESPONSE>{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(BasicClientWithConnection.class);
private BufferAllocator alloc;
public BasicClientWithConnection(RpcConfig rpcMapping, BufferAllocator alloc, EventLoopGroup eventLoopGroup, T handshakeType,
Class<HANDSHAKE_RESPONSE> responseClass, Parser<HANDSHAKE_RESPONSE> handshakeParser) {
super(rpcMapping, alloc.getUnderlyingAllocator(), eventLoopGroup, handshakeType, responseClass, handshakeParser);
this.alloc = alloc;
}
@Override
protected GenericFutureListener<ChannelFuture> getCloseHandler(ServerConnection clientConnection) {
return getCloseHandler(clientConnection.getChannel());
}
@Override
protected Response handle(ServerConnection connection, int rpcType, ByteBuf pBody, ByteBuf dBody) throws RpcException {
return handleReponse( (ConnectionThrottle) connection, rpcType, pBody, dBody);
}
protected abstract Response handleReponse(ConnectionThrottle throttle, int rpcType, ByteBuf pBody, ByteBuf dBody) throws RpcException ;
@Override
public ServerConnection initRemoteConnection(Channel channel) {
return new ServerConnection(channel, alloc);
}
public static class ServerConnection extends RemoteConnection{
private final BufferAllocator alloc;
public ServerConnection(Channel channel, BufferAllocator alloc) {
super(channel);
this.alloc = alloc;
}
@Override
public BufferAllocator getAllocator() {
return alloc;
}
}
}
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