2014-01-30 21:18:30 +01:00
|
|
|
/*
|
|
|
|
* Copyright 2014 The Netty Project
|
|
|
|
*
|
|
|
|
* The Netty Project 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 io.netty.handler.codec.stomp;
|
|
|
|
|
|
|
|
import io.netty.buffer.ByteBuf;
|
|
|
|
import io.netty.channel.ChannelHandlerContext;
|
2014-06-05 11:31:04 +02:00
|
|
|
import io.netty.handler.codec.AsciiHeadersEncoder;
|
|
|
|
import io.netty.handler.codec.AsciiHeadersEncoder.NewlineType;
|
|
|
|
import io.netty.handler.codec.AsciiHeadersEncoder.SeparatorType;
|
2014-01-30 21:18:30 +01:00
|
|
|
import io.netty.handler.codec.MessageToMessageEncoder;
|
|
|
|
import io.netty.util.CharsetUtil;
|
2014-09-19 01:04:35 +02:00
|
|
|
import io.netty.util.internal.PlatformDependent;
|
2014-01-30 21:18:30 +01:00
|
|
|
|
2014-06-04 09:39:50 +02:00
|
|
|
import java.util.List;
|
|
|
|
|
2014-01-30 21:18:30 +01:00
|
|
|
/**
|
2014-06-04 09:39:50 +02:00
|
|
|
* Encodes a {@link StompFrame} or a {@link StompSubframe} into a {@link ByteBuf}.
|
2014-01-30 21:18:30 +01:00
|
|
|
*/
|
2014-06-04 09:39:50 +02:00
|
|
|
public class StompSubframeEncoder extends MessageToMessageEncoder<StompSubframe> {
|
2014-01-30 21:18:30 +01:00
|
|
|
|
|
|
|
@Override
|
2014-06-04 09:39:50 +02:00
|
|
|
protected void encode(ChannelHandlerContext ctx, StompSubframe msg, List<Object> out) throws Exception {
|
|
|
|
if (msg instanceof StompFrame) {
|
|
|
|
StompFrame frame = (StompFrame) msg;
|
2014-01-30 21:18:30 +01:00
|
|
|
ByteBuf frameBuf = encodeFrame(frame, ctx);
|
|
|
|
out.add(frameBuf);
|
|
|
|
ByteBuf contentBuf = encodeContent(frame, ctx);
|
|
|
|
out.add(contentBuf);
|
2014-06-04 09:39:50 +02:00
|
|
|
} else if (msg instanceof StompHeadersSubframe) {
|
|
|
|
StompHeadersSubframe frame = (StompHeadersSubframe) msg;
|
2014-01-30 21:18:30 +01:00
|
|
|
ByteBuf buf = encodeFrame(frame, ctx);
|
|
|
|
out.add(buf);
|
2014-06-04 09:39:50 +02:00
|
|
|
} else if (msg instanceof StompContentSubframe) {
|
|
|
|
StompContentSubframe stompContentSubframe = (StompContentSubframe) msg;
|
|
|
|
ByteBuf buf = encodeContent(stompContentSubframe, ctx);
|
2014-01-30 21:18:30 +01:00
|
|
|
out.add(buf);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-06-04 09:39:50 +02:00
|
|
|
private static ByteBuf encodeContent(StompContentSubframe content, ChannelHandlerContext ctx) {
|
|
|
|
if (content instanceof LastStompContentSubframe) {
|
2014-01-30 21:18:30 +01:00
|
|
|
ByteBuf buf = ctx.alloc().buffer(content.content().readableBytes() + 1);
|
|
|
|
buf.writeBytes(content.content());
|
2014-06-04 09:39:50 +02:00
|
|
|
buf.writeByte(StompConstants.NUL);
|
2014-01-30 21:18:30 +01:00
|
|
|
return buf;
|
|
|
|
} else {
|
2014-06-04 09:39:50 +02:00
|
|
|
return content.content().retain();
|
2014-01-30 21:18:30 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-06-04 09:39:50 +02:00
|
|
|
private static ByteBuf encodeFrame(StompHeadersSubframe frame, ChannelHandlerContext ctx) {
|
2014-01-30 21:18:30 +01:00
|
|
|
ByteBuf buf = ctx.alloc().buffer();
|
|
|
|
|
|
|
|
buf.writeBytes(frame.command().toString().getBytes(CharsetUtil.US_ASCII));
|
2014-06-05 11:31:04 +02:00
|
|
|
buf.writeByte(StompConstants.LF);
|
2014-09-19 01:04:35 +02:00
|
|
|
try {
|
|
|
|
frame.headers().forEachEntry(new AsciiHeadersEncoder(buf, SeparatorType.COLON, NewlineType.LF));
|
|
|
|
} catch (Exception ex) {
|
|
|
|
buf.release();
|
|
|
|
PlatformDependent.throwException(ex);
|
|
|
|
}
|
2014-06-05 11:31:04 +02:00
|
|
|
buf.writeByte(StompConstants.LF);
|
2014-01-30 21:18:30 +01:00
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
}
|