I'm using Log::Log4perl::Appender::DBI and I have a few end-user
suggestions to make.
I have a significant slab of existing Log::Log4perl code which uses
variable number of arguments like this:
Log::Log4perl -> get_logger() -> debug("Parsing start"):
...
Log::Log4perl -> get_logger() -> debug("Done, ", $error_count, "
errors.");
Using this sort of code with Log::Log4perl::Appender::DBI the way it's
currently suggested/recommended by the perldoc (prepared statements, '?'
placeholders and warp_message=0) is presently a poor experience, because
the number of placeholders is variable. At the moment this means most
of my DBI inserts were failing silently and I had to uncomment the
"warn" on line 138 of Log::Log4perl::Appender::DBI to find out what was
going wrong (which is rather unfortunate.)
I think it would be better to do something like this as a default in the
perldoc example (ie. without warp_message, and %m explicitly specified
as a parameter)
log4perl.appender.DBLog = Log::Log4perl::Appender::DBI
log4perl.appender.DBLog.datasource = DBI:mysql:database=log;host=localhost
log4perl.appender.DBLog.username = user
log4perl.appender.DBLog.password = pass
log4perl.appender.DBLog.sql = insert into cc3 (timestamp, severity,
source, source_line, host, caller, file, message) values
(unix_timestamp(), ?, ?, ?, ?, ?, ?, ?);
log4perl.appender.DBLog.params.1 = %p
log4perl.appender.DBLog.params.2 = %X{source}
log4perl.appender.DBLog.params.3 = %X{source-line}
log4perl.appender.DBLog.params.4 = %H
log4perl.appender.DBLog.params.5 = %M
log4perl.appender.DBLog.params.6 = +%L %F
log4perl.appender.DBLog.params.7 = %m
log4perl.appender.DBLog.usePreparedStmt = 1
log4perl.appender.DBLog.layout = Log::Log4perl::Layout::NoopLayout
The existing example could then be included in the perldoc under a
section entitled ("How to get access to individual arguments to debug(),
warn() etc.")
But it's a great class nevertheless :)
Thanks,
A.
--
Adrian Corston
Support Engineer
YourAmigo
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