hi, Denis, try this to see if follows could help you ^^
in Handler which extends HTTP codec
1. generate a messageId and record startTime and something others in a data
struct in this channel attr or in a global data struct
2. decode a http request
3. put the messageId in http request headers
in HttpRequestHandler
1. pull the messageId in httpRequest header
2. record something with messageId
3. do business
4.
response.headers().set(CONNECTION, KEEP_ALIVE);
ctx.write(response).addListener(new GenericFutureListener<Future<? super
Void>>() {
// this method is called after flush() method
@Override
public void operationComplete(Future<? super Void> future) throws
Exception {
future.isSuccess();
// do something with messageId
}
});
2016-11-25 17:52 GMT+08:00 Denis Rossi <[email protected]>:
> Hi,
>
> I'm implementing an HTTP server with netty 4.1.6.Final, and I would like
> to implement an access log.
> This is what I would like to do, considering that I'm trying to never call
> writeAndFlush but just write and flush is called only when a read complete
> event has been fired:
>
> 1. get the start time before the the message is decoded to an
> HttpRequest (before the HTTP codec)
> 2. get method, protocol, uri, x-forwarded-for and x-forwarded-proto
> headers immediately after the message has been decoded in a HTTP request
> 3. get response status and content length when I write the HTTP
> response
> 4. get the response time when I flush
>
> The problem I'm facing is that I cannot keep trace of all those
> informations as channel attributes cause a read operation could happen
> before the flush is called.
>
> Even if I try to keep those information grouped by a messageId set at the
> very first read, I cannot know, when I flush, to which original message I'm
> responding.
>
>
> Does it makes sense? Am I approaching the problem in a wrong way?
>
>
> Thanks for helping.
>
>
> Regards,
>
> Denis Rossi
>
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