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package org.lumongo.server.connection;

import com.googlecode.protobuf.pro.duplex.CleanShutdownHandler;
import com.googlecode.protobuf.pro.duplex.PeerInfo;
import com.googlecode.protobuf.pro.duplex.RpcClient;
import com.googlecode.protobuf.pro.duplex.client.DuplexTcpClientPipelineFactory;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelOption;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
import org.apache.commons.pool.BasePoolableObjectFactory;
import org.apache.log4j.Logger;
import org.lumongo.cluster.message.Lumongo.InternalService;
import org.lumongo.cluster.message.Lumongo.InternalService.BlockingInterface;

public class InternalRpcConnectionFactory extends BasePoolableObjectFactory {
	private static CleanShutdownHandler shutdownHandler = new CleanShutdownHandler();
	
	private final static Logger log = Logger.getLogger(InternalRpcConnectionFactory.class);
	
	private String memberAddress;
	private int internalServicePort;
	
	public InternalRpcConnectionFactory(String memberAddress, int internalServicePort) {
		this.memberAddress = memberAddress;
		this.internalServicePort = internalServicePort;
	}
	
	@Override
	public InternalRpcConnection makeObject() throws Exception {
		PeerInfo server = new PeerInfo(memberAddress, internalServicePort);
		
		log.info("Connecting to <" + server + ">");
		
		DuplexTcpClientPipelineFactory clientFactory = new DuplexTcpClientPipelineFactory();
		clientFactory.setCompression(false);
		clientFactory.setRpcLogger(null);
		
		Bootstrap bootstrap = new Bootstrap();
		bootstrap.group(new NioEventLoopGroup());
		bootstrap.handler(clientFactory);
		bootstrap.channel(NioSocketChannel.class);
		
		//TODO check this options
		bootstrap.option(ChannelOption.TCP_NODELAY, true);
		bootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000);
		bootstrap.option(ChannelOption.SO_SNDBUF, 1048576);
		bootstrap.option(ChannelOption.SO_RCVBUF, 1048576);
		
		shutdownHandler.addResource(bootstrap.group());
		
		RpcClient rpcClient = clientFactory.peerWith(server, bootstrap);
		
		BlockingInterface service = InternalService.newBlockingStub(rpcClient);
		
		return new InternalRpcConnection(service, rpcClient, bootstrap);
	}
	
	@Override
	public void destroyObject(InternalRpcConnection obj) throws Exception {
		obj.close();
	}
	
}