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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: [log4j 1.x] Batch-sending with SMTPAppender
Date Wed, 16 Nov 2016 17:22:03 GMT
You might have to use an XML configuration file to get that to work in
Log4j 1: See org.apache.log4j.net.SMTPAppenderTest.testTrigger()

Gary

On Wed, Nov 16, 2016 at 9:11 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:

> Ralph,
>
> On 11/16/16 9:49 AM, Ralph Goers wrote:
> > First, I have to say that Log4j 1 reached end-of-life over a year
> > ago. We recommend you upgrade to Log4j 2.
>
> Fair enough. I'm not quite there, yet. I suspect that log4j 2 will have
> the same issue, though.
>
> > I don’t know what you mean by “each log message seems to generate its
> > own separate email message”. The SMTP appender accumulates log events
> > in a buffer until a triggering event occurs (usually an error event)
> > and then all the buffered events are sent in an email.
>
> This is not what I'm seeing. I'm seeing e.g. 10 ERROR messages logged in
> the span of about a minute to the main log file (e.g. my-process.log on
> the disk) and then 10 separate email messages with one log line per
> message in them.
>
> I have an example from 09:25 US-Eastern this morning: I got 7 separate
> email messages. The first message has this content (timestamps are UTC):
>
> 2016-11-16 14:25:52,893 [main] ERROR [...logger and message content...]
>
> The last one has this content:
>
> 2016-11-16 14:27:13,569 [main] ERROR [...logger and message content...]
>
> So in the space of about 90 seconds, log4j sent 7 separate email
> messages, and each email message contained a single log line.
>
> I happen to be using log4j 1.2.17 which was the final release of log4j 1.x.
>
> When you say "an error event" will trigger an email to be sent... do you
> mean a log.error() call? If so, perhaps the problem is that my threshold
> has been set to ERROR so I'm only reacting to ERROR events. If I were
> logging at the TRACE level, would I get a whole bunch of TRACE and a
> single ERROR in each email message?
>
> Looking at the javadoc, it seems like that might be the case:
>
> "
> The default constructor will instantiate the appender with a
> TriggeringEventEvaluator that will trigger on events with level ERROR or
> higher.
> "
>
> I'm using a .properties file to configure log4j. How can I configure a
> TriggeringEventEvaluator to, saw, only trigger on e.g. FATAL log events?
>
> > This happens each time a triggering event occurs. I see the logic for
> > sendOnClose and expect what you are doing should work, but I haven’t
> > worked with the Log4j 1 code in years so I can’t say for sure.
>
> Thanks,
> -chris
>
>


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