/**
* 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.bit;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.util.concurrent.GenericFutureListener;
import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
import org.apache.drill.exec.proto.ExecProtos.BitHandshake;
import org.apache.drill.exec.proto.ExecProtos.RpcType;
import org.apache.drill.exec.rpc.BasicClient;
import org.apache.drill.exec.rpc.Response;
import org.apache.drill.exec.rpc.RpcBus;
import org.apache.drill.exec.rpc.RpcConnectionHandler;
import org.apache.drill.exec.rpc.RpcException;
import org.apache.drill.exec.rpc.bit.BitConnectionManager.CloseHandlerCreator;
import org.apache.drill.exec.server.BootStrapContext;
import org.apache.drill.exec.work.batch.BitComHandler;
import com.google.protobuf.MessageLite;
public class BitClient extends BasicClient<RpcType, BitConnection, BitHandshake, BitHandshake>{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(BitClient.class);
private final BitComHandler handler;
private final DrillbitEndpoint remoteEndpoint;
private volatile BitConnection connection;
private final ListenerPool listeners;
private final CloseHandlerCreator closeHandlerFactory;
private final DrillbitEndpoint localIdentity;
public BitClient(DrillbitEndpoint remoteEndpoint, DrillbitEndpoint localEndpoint, BitComHandler handler, BootStrapContext context, CloseHandlerCreator closeHandlerFactory, ListenerPool listeners) {
super(BitRpcConfig.MAPPING, context.getAllocator().getUnderlyingAllocator(), context.getBitLoopGroup(), RpcType.HANDSHAKE, BitHandshake.class, BitHandshake.PARSER);
this.localIdentity = localEndpoint;
this.remoteEndpoint = remoteEndpoint;
this.handler = handler;
this.listeners = listeners;
this.closeHandlerFactory = closeHandlerFactory;
}
public void connect(RpcConnectionHandler<BitConnection> connectionHandler) {
connectAsClient(connectionHandler, BitHandshake.newBuilder().setRpcVersion(BitRpcConfig.RPC_VERSION).setEndpoint(localIdentity).build(), remoteEndpoint.getAddress(), remoteEndpoint.getBitPort());
}
@SuppressWarnings("unchecked")
@Override
public BitConnection initRemoteConnection(Channel channel) {
this.connection = new BitConnection(channel, (RpcBus<RpcType, BitConnection>) (RpcBus<?, ?>) this, listeners);
return connection;
}
@Override
protected GenericFutureListener<ChannelFuture> getCloseHandler(BitConnection clientConnection) {
return closeHandlerFactory.getHandler(clientConnection, super.getCloseHandler(clientConnection));
}
@Override
public MessageLite getResponseDefaultInstance(int rpcType) throws RpcException {
return BitComDefaultInstanceHandler.getResponseDefaultInstance(rpcType);
}
@Override
protected Response handle(BitConnection connection, int rpcType, ByteBuf pBody, ByteBuf dBody) throws RpcException {
return handler.handle(connection, rpcType, pBody, dBody);
}
@Override
protected void validateHandshake(BitHandshake handshake) throws RpcException {
if(handshake.getRpcVersion() != BitRpcConfig.RPC_VERSION) throw new RpcException(String.format("Invalid rpc version. Expected %d, actual %d.", handshake.getRpcVersion(), BitRpcConfig.RPC_VERSION));
}
@Override
protected void finalizeConnection(BitHandshake handshake, BitConnection connection) {
connection.setEndpoint(handshake.getEndpoint());
}
public BitConnection getConnection(){
return this.connection;
}
}