Hi all,
if you'd like to limit the number of messages sent out via an appender,
there's a new appender in town you might like: Use
Log::Log4perl::Appender::Limit in conjunction with a real appender like
Log::Dispatch::Email, and it won't send out messages more often than
once per configurable time frame (like, one hour). Here's the docs:
NAME
Log::Log4perl::Appender::Limit - Limit message delivery via block period
SYNOPSIS
use Log::Log4perl qw(:easy);
my $conf = qq(
log4perl.category = WARN, Limiter
# Email appender
log4perl.appender.Mailer = Log::Dispatch::Email::MailSend
log4perl.appender.Mailer.to = drone\@pageme.com
log4perl.appender.Mailer.subject = Something's broken!
log4perl.appender.Mailer.buffered = 0
log4perl.appender.Mailer.layout = PatternLayout
log4perl.appender.Mailer.layout.ConversionPattern=%d %m %n
# Limiting appender, using the email appender above
log4perl.appender.Limiter = Log::Log4perl::Appender::Limit
log4perl.appender.Limiter.appender = Mailer
log4perl.appender.Limiter.block_period = 3600
);
Log::Log4perl->init(\$conf);
WARN("This message will be sent immediately");
WARN("This message will be delayed by one hour.");
sleep(3601);
WARN("This message plus the last one will be sent now");
DESCRIPTION
"appender"
Specifies the name of the appender used by the limiter. The appender
specified must be defined somewhere in the configuration file, not
necessarily before the definition of
"Log::Log4perl::Appender::Limit".
"block_period"
Period in seconds between delivery of messages. If messages arrive
in between, they will be either saved (if "accumulate" is set to a
true value) or discarded (if "accumulate" isn't set).
"persistent"
File name in which "Log::Log4perl::Appender::Limit" persistently
stores delivery times. If omitted, the appender will have no
recollection of what happened when the program restarts.
If the appender attached to "Limit" uses "PatternLayout" with a
timestamp specifier, you will notice that the message timestamps are
reflecting the original log event, not the time of the message rendering
in the attached appender. Major trickery has applied to accomplish this
(Cough!).
--
-- Mike
Mike Schilli
m...@pe...
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