package com.alibaba.dubbo.rpc.protocol.thrift;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TMessage;
import org.apache.thrift.protocol.TMessageType;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.protocol.TStruct;
import org.apache.thrift.transport.TIOStreamTransport;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.remoting.Channel;
import com.alibaba.dubbo.remoting.Codec2;
import com.alibaba.dubbo.remoting.buffer.ChannelBuffer;
import com.alibaba.dubbo.remoting.buffer.ChannelBufferOutputStream;
import com.alibaba.dubbo.remoting.exchange.Request;
import com.alibaba.dubbo.remoting.exchange.Response;
import com.alibaba.dubbo.rpc.Invocation;
/**
* @author <a href="mailto:gang.lvg@alibaba-inc.com">kimi</a>
*/
public class ThriftNativeCodec implements Codec2 {
private final AtomicInteger thriftSeq = new AtomicInteger(0);
public void encode(Channel channel, ChannelBuffer buffer, Object message)
throws IOException {
if (message instanceof Request) {
encodeRequest(channel, buffer, (Request)message);
} else if (message instanceof Response) {
encodeResponse(channel, buffer, (Response)message);
} else {
throw new IOException("Unsupported message type "
+ message.getClass().getName());
}
}
protected void encodeRequest(Channel channel, ChannelBuffer buffer, Request request)
throws IOException {
Invocation invocation = (Invocation) request.getData();
TProtocol protocol = newProtocol(channel.getUrl(), buffer);
try {
protocol.writeMessageBegin(new TMessage(
invocation.getMethodName(), TMessageType.CALL,
thriftSeq.getAndIncrement()));
protocol.writeStructBegin(new TStruct(invocation.getMethodName() + "_args"));
for(int i = 0; i < invocation.getParameterTypes().length; i++) {
Class<?> type = invocation.getParameterTypes()[i];
}
} catch (TException e) {
throw new IOException(e.getMessage(), e);
}
}
protected void encodeResponse(Channel channel, ChannelBuffer buffer, Response response)
throws IOException {
}
public Object decode(Channel channel, ChannelBuffer buffer) throws IOException {
return null;
}
protected static TProtocol newProtocol(URL url, ChannelBuffer buffer) throws IOException {
String protocol = url.getParameter(ThriftConstants.THRIFT_PROTOCOL_KEY,
ThriftConstants.DEFAULT_PROTOCOL);
if (ThriftConstants.BINARY_THRIFT_PROTOCOL.equals(protocol)) {
return new TBinaryProtocol(new TIOStreamTransport(new ChannelBufferOutputStream(buffer)));
}
throw new IOException("Unsupported protocol type " + protocol);
}
}