/*
* Copyright 2014 Matthias Einwag
*
* The jawampa authors license 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 ws.wamp.jawampa.transport;
import java.util.List;
import ws.wamp.jawampa.WampMessages.WampMessage;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageEncoder;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
public class WampSerializationHandler extends MessageToMessageEncoder<WampMessage> {
private static final InternalLogger logger = InternalLoggerFactory.getInstance(WampSerializationHandler.class);
enum ReadState {
Closed,
Reading,
Error
}
final ObjectMapper objectMapper;
final Serialization serialization;
public Serialization serialization() {
return serialization;
}
public WampSerializationHandler(Serialization serialization, ObjectMapper objectMapper) {
this.serialization = serialization;
this.objectMapper = objectMapper;
}
@Override
public void handlerAdded(ChannelHandlerContext ctx) {
}
@Override
protected void encode(ChannelHandlerContext ctx, WampMessage msg, List<Object> out) throws Exception {
if (serialization == Serialization.Json) {
ByteBuf msgBuffer = Unpooled.buffer();
ByteBufOutputStream outStream = new ByteBufOutputStream(msgBuffer);
try {
objectMapper.writeValue(outStream, msg.toObjectArray(objectMapper)); // TODO: Non JSON Mapping
} catch (Exception e) {
msgBuffer.release();
return;
}
TextWebSocketFrame frame = new TextWebSocketFrame(msgBuffer);
if (logger.isDebugEnabled()) {
logger.debug("Serialized Wamp Message: {}", frame.text());
}
//System.out.println("Serialized Wamp message: " + frame.text());
out.add(frame);
}
}
}