package com.datastax.oss.driver.internal.core.protocol;
import com.datastax.oss.protocol.internal.Frame;
import com.datastax.oss.protocol.internal.FrameCodec;
import com.datastax.oss.protocol.internal.PrimitiveCodec;
import edu.umd.cs.findbugs.annotations.NonNull;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOutboundHandlerAdapter;
import io.netty.channel.ChannelPromise;
import net.jcip.annotations.NotThreadSafe;
@NotThreadSafe
public class FrameToSegmentEncoder extends ChannelOutboundHandlerAdapter {
private final PrimitiveCodec<ByteBuf> primitiveCodec;
private final FrameCodec<ByteBuf> frameCodec;
private final String logPrefix;
private ByteBufSegmentBuilder segmentBuilder;
public FrameToSegmentEncoder(
@NonNull PrimitiveCodec<ByteBuf> primitiveCodec,
@NonNull FrameCodec<ByteBuf> frameCodec,
@NonNull String logPrefix) {
this.primitiveCodec = primitiveCodec;
this.frameCodec = frameCodec;
this.logPrefix = logPrefix;
}
@Override
public void handlerAdded(@NonNull ChannelHandlerContext ctx) {
segmentBuilder = new ByteBufSegmentBuilder(ctx, primitiveCodec, frameCodec, logPrefix);
}
@Override
public void write(
@NonNull ChannelHandlerContext ctx, @NonNull Object msg, @NonNull ChannelPromise promise)
throws Exception {
if (msg instanceof Frame) {
segmentBuilder.addFrame(((Frame) msg), promise);
} else {
super.write(ctx, msg, promise);
}
}
@Override
public void flush(@NonNull ChannelHandlerContext ctx) throws Exception {
segmentBuilder.flush();
super.flush(ctx);
}
}