package org.opendaylight.controller.netconf.nettyutil.handler;
+import com.google.common.base.Charsets;
+import com.google.common.base.Preconditions;
import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
-
import org.opendaylight.controller.netconf.util.messages.NetconfMessageConstants;
-import org.opendaylight.controller.netconf.util.messages.NetconfMessageHeader;
-
-import com.google.common.base.Preconditions;
public class ChunkedFramingMechanismEncoder extends MessageToByteEncoder<ByteBuf> {
public static final int DEFAULT_CHUNK_SIZE = 8192;
this(DEFAULT_CHUNK_SIZE);
}
- public ChunkedFramingMechanismEncoder(int chunkSize) {
- Preconditions.checkArgument(chunkSize > MIN_CHUNK_SIZE);
- Preconditions.checkArgument(chunkSize < MAX_CHUNK_SIZE);
+ public ChunkedFramingMechanismEncoder(final int chunkSize) {
+ Preconditions.checkArgument(chunkSize >= MIN_CHUNK_SIZE && chunkSize <= MAX_CHUNK_SIZE, "Unsupported chunk size %s", chunkSize);
this.chunkSize = chunkSize;
}
}
@Override
- protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) {
- while (msg.readableBytes() > chunkSize) {
- ByteBuf chunk = Unpooled.buffer(chunkSize);
- chunk.writeBytes(createChunkHeader(chunkSize));
- chunk.writeBytes(msg.readBytes(chunkSize));
- ctx.write(chunk);
- }
- out.writeBytes(createChunkHeader(msg.readableBytes()));
- out.writeBytes(msg.readBytes(msg.readableBytes()));
- out.writeBytes(NetconfMessageConstants.END_OF_CHUNK);
- }
+ protected void encode(final ChannelHandlerContext ctx, final ByteBuf msg, final ByteBuf out) {
+ do {
+ final int xfer = Math.min(chunkSize, msg.readableBytes());
+
+ out.writeBytes(NetconfMessageConstants.START_OF_CHUNK);
+ out.writeBytes(String.valueOf(xfer).getBytes(Charsets.US_ASCII));
+ out.writeByte('\n');
- private ByteBuf createChunkHeader(int chunkSize) {
- return Unpooled.wrappedBuffer(NetconfMessageHeader.toBytes(chunkSize));
+ out.writeBytes(msg, xfer);
+ } while (msg.isReadable());
+
+ out.writeBytes(NetconfMessageConstants.END_OF_CHUNK);
}
}