/// <inheritdoc />
public override void Write(IChannelHandlerContext ctx, object msg, IPromise promise)
{
ThreadLocalObjectList output = null;
try
{
if (AcceptOutboundMessage(msg))
{
output = ThreadLocalObjectList.NewInstance();
var cast = (T)msg;
try
{
Encode(ctx, cast, output);
}
finally
{
_ = ReferenceCountUtil.Release(cast);
}
if (0u >= (uint)output.Count)
{
CThrowHelper.ThrowEncoderException_MustProduceAtLeastOneMsg(GetType());
}
}
else
{
_ = ctx.WriteAsync(msg, promise);
}
}
catch (EncoderException)
{
throw;
}
catch (Exception ex)
{
CThrowHelper.ThrowEncoderException(ex); // todo: we don't have a stack on EncoderException but it's present on inner exception.
}
finally
{
if (output is object)
{
try
{
int lastItemIndex = output.Count - 1;
if (0u >= (uint)lastItemIndex)
{
_ = ctx.WriteAsync(output[0], promise);
}
else if (lastItemIndex > 0)
{
// Check if we can use a voidPromise for our extra writes to reduce GC-Pressure
// See https://github.com/netty/netty/issues/2525
if (promise == ctx.VoidPromise())
{
WriteVoidPromise(ctx, output);
}
else
{
WritePromiseCombiner(ctx, output, promise);
}
}
}
finally
{
output.Return();
}
}
}
}