package org.opendaylight.controller.netconf.util.handler;
-import org.opendaylight.controller.netconf.util.messages.NetconfMessageFactory;
-import org.opendaylight.controller.netconf.util.messages.NetconfMessageHeader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
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;
+ public static final int MIN_CHUNK_SIZE = 128;
+ public static final int MAX_CHUNK_SIZE = 16 * 1024 * 1024;
- private final static Logger logger = LoggerFactory.getLogger(ChunkedFramingMechanismEncoder.class);
+ private final int chunkSize;
- private NetconfMessageHeader messageHeader = new NetconfMessageHeader();
+ public ChunkedFramingMechanismEncoder() {
+ this(DEFAULT_CHUNK_SIZE);
+ }
+
+ public ChunkedFramingMechanismEncoder(int chunkSize) {
+ Preconditions.checkArgument(chunkSize > MIN_CHUNK_SIZE);
+ Preconditions.checkArgument(chunkSize < MAX_CHUNK_SIZE);
+ this.chunkSize = chunkSize;
+ }
+
+ public final int getChunkSize() {
+ return chunkSize;
+ }
@Override
protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) throws Exception {
- while (msg.readableBytes() > NetconfMessageFactory.MAX_CHUNK_SIZE) {
- ByteBuf chunk = Unpooled.buffer(NetconfMessageFactory.MAX_CHUNK_SIZE);
- chunk.writeBytes(createChunkHeader(NetconfMessageFactory.MAX_CHUNK_SIZE));
- chunk.writeBytes(msg.readBytes(NetconfMessageFactory.MAX_CHUNK_SIZE));
+ 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(NetconfMessageFactory.endOfChunk);
- logger.debug("Output message size is {}", out.readableBytes());
+ out.writeBytes(NetconfMessageConstants.endOfChunk);
}
private ByteBuf createChunkHeader(int chunkSize) {
- messageHeader.setLength(chunkSize);
- logger.debug("Chunked data length is {}.", chunkSize);
- return Unpooled.wrappedBuffer(messageHeader.toBytes());
+ return Unpooled.wrappedBuffer(NetconfMessageHeader.toBytes(chunkSize));
}
-
}