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From Stefan Fritsch>
Subject Re: Proposal: error codes
Date Wed, 30 Nov 2011 22:04:48 GMT
On Wednesday 30 November 2011, Tim Bannister wrote:
> On 27 Nov 2011, at 17:14, Stefan Fritsch wrote:
> > Yes, that would be a good idea and I agree with Daniel that we
> > should use a distinct prefix or format. We currently have around
> > 2700 calls to *_log_?error in trunk, so a 4-digit number should
> > be ok. Together with for example AH as prefix for "Apache HTTPD"
> > this would result in numbers like AH0815 which don't seem to
> > cause many hits on google.
> I think most people still use file logging, but Apache httpd does
> also support syslog. And over the life of Apache httpd syslog has
> gained features too, such as message codes.
> section 6.2.7 says:
>    The MSGID SHOULD identify the type of message.  For example, a
>    firewall might use the MSGID "TCPIN" for incoming TCP traffic
> and the MSGID "TCPOUT" for outgoing TCP traffic.  Messages with
> the same MSGID should reflect events of the same semantics.  The
> MSGID itself is a string without further semantics.  It is
> intended for filtering messages on a relay or collector.
> There is also a mechanism for structured metadata. I don't know
> whether either or both of these will be written into future Apache
> httpd… but I thought it was worth mentioning these early on in the
> discussion.

That's definitely interesting to know, but one has to see if there is 
a standard API for these things. The Linux man pages of syslog() and 
friends do not mention MSGID.

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