how to pass unique value with message

[Johnny Luong]

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anthony_w wrote:
| I have a problem I can't seem to figure out how to solve.  I can't tell if
| the answer is staring me in the face and I'm just not seeing it.
|
| I have a server app with handlers in the pipeline like this.
|
| H[A] -> H[B] -> H[C] -> H[D]
|
| I need to calculate the elapsed time from A to D on a per-message basis.
| I'm ok with storing the starting time in a map somewhere when I'm in
handler
| A.  Is there a way to uniquely identify each message within Netty so
that I
| could retrieve the starting time when I get to handler D?  Having the
client
| include a unique value in the message is not an option.  Thanks.
|
| anthony

If you have some way of relating D to C, C to B, B to A, then you can
find the elapse time upon completion of handler D with your starting
time in a map for handler A by walking through the relationship.  In my
application, I do a variation on that internally by passing along my
POJO from handler A, a starting timestamp which negates the need for a
separate Map.  In other words, I'm simply manipulating the same object
just from different interfaces.

Best,
Johnny
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