@Override
protected void encode(ChannelHandlerContext ctx, Object msg, ByteBuf out) throws Exception {
UnsafeByteArrayOutputStream os = new UnsafeByteArrayOutputStream(1024);
com.antrou.dubbo.remoting.netty4.NettyChannel channel =
com.antrou.dubbo.remoting.netty4.NettyChannel.getOrAddChannel(
ctx.channel(), url, handler);
try {
codec.encode(channel, os, msg);
} finally {
com.antrou.dubbo.remoting.netty4.NettyChannel.removeChannelIfDisconnected(ctx.channel());
}
out.writeBytes(os.toByteBuffer());
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf input, List<Object> out)
throws Exception {
int readable = input.readableBytes();
if (readable <= 0) {
return;
}
int off, limit;
byte[] buf = mBuffer;
if (buf == null) {
buf = new byte[bufferSize];
off = limit = 0;
} else {
off = mOffset;
limit = mLimit;
}
com.antrou.dubbo.remoting.netty4.NettyChannel channel =
com.antrou.dubbo.remoting.netty4.NettyChannel.getOrAddChannel(
ctx.channel(), url, handler);
boolean remaining = true;
Object msg;
UnsafeByteArrayInputStream bis;
try {
do {
// read data into buffer.
int read = Math.min(readable, buf.length - limit);
input.readBytes(buf, limit, read);
limit += read;
readable -= read;
bis = new UnsafeByteArrayInputStream(buf, off, limit - off);
// decode object.
do {
try {
msg = codec.decode(channel, bis);
} catch (IOException e) {
remaining = false;
throw e;
}
if (msg == Codec.NEED_MORE_INPUT) {
if (off == 0) {
if (readable > 0) {
buf = Bytes.copyOf(buf, buf.length << 1);
}
} else {
int len = limit - off;
System.arraycopy(buf, off, buf, 0, len); // adjust buffer.
off = 0;
limit = len;
}
break;
} else {
int pos = bis.position();
if (off == pos) {
remaining = false;
throw new IOException("Decode without read data.");
}
if (msg != null) {
out.add(msg);
}
off = pos;
}
} while (bis.available() > 0);
} while (readable > 0);
} finally {
if (remaining) {
int len = limit - off;
if (len < buf.length / 2) {
System.arraycopy(buf, off, buf, 0, len);
off = 0;
limit = len;
}
mBuffer = buf;
mOffset = off;
mLimit = limit;
} else {
mBuffer = null;
mOffset = mLimit = 0;
}
com.antrou.dubbo.remoting.netty4.NettyChannel.removeChannelIfDisconnected(ctx.channel());
}
}
