[erlang-questions] r21 logger difficulties

[Siri Hansen]

Hi again, Mark!

I see that you set the handler level to debug in the sys.config, but I
can't see that the primary level is set? Please refer to the Kernel User's
Guide, http://erlang.org/doc/apps/kernel/logger_chapter.html, for a
description of how primary level check and -filters are applied prior to
all handler level checks and -filters. (short version: if a log event does
not pass the primary level check, it is discarded and will never hit any
handler).

Primary level is 'notice' by default, and handler levels are 'all' by
default.

What I mean is that your sys.config should look something like this:

{kernel,
    [{logger,
      [{handler, default, logger_std_h,
       #{level => debug,
         config => #{type => {file,"log/erlang.log"}},
         formatter => {logger_formatter, #{template => [time," ",pid,"
",msg,"\n"]}}}
      }]
     },
     {logger_level, all}
    ]
}

Den man. 9. jul. 2018 kl. 19:22 skrev Mark Geib <mark.geib.44@REDACTED>:

> So after some more debugging, it appears that if I use “debug” or “info”
> in either the sys.config logger config for the logging level, or as the
> level of log message I see nothing. If I use any of the other levels it
> appears to work as expected. All the combinations I tried worked as well,
> i.e. if I set the log level in the config to “notice” and then log with
> logger:emergency(), it works fine.
>
> Mark.
>
> On Jul 9, 2018, at 1:33 AM, Siri Hansen <erlangsiri@REDACTED> wrote:
>
> Hi Mark, you just missed that the primary log level by default is
> 'notice', which means that 'info' is rejected by the primary log level
> check. If you do logger:notice("test message") instead, it should be
> printed. To even print 'info', set the kernel configuration parameter
> logger_level to 'info', 'debug' or 'all' in your sys config, or set it in
> runtime with logger:set_primary_config(level,Level).
>
> Regards
> /siri
>
> Den fre. 6. jul. 2018 kl. 20:44 skrev Mark Geib <mark.geib.44@REDACTED>:
>
>> I decided to take a look at the new logger in R21, but I am not able to
>> produce any output.
>>
>> In my sys.config I have the following:
>> {kernel,
>>     [{logger,
>>       [{handler, default, logger_std_h,
>>        #{level => debug,
>>          config => #{type => {file,"log/erlang.log"}},
>>          formatter => {logger_formatter, #{template => [time," ",pid,"
>> ",msg,"\n"]}}}
>>       }]
>>     }]
>>  }
>>
>> And in my code I do something like logger:info(“test message”), but I
>> never see any output to the file. I see the file log/erlang.log created,
>> but always empty.
>>
>> I must be missing something, but I have read through the docs, quickly.
>>
>> Any pointers would be appreciated.
>>
>> Mark.
>> _______________________________________________
>> erlang-questions mailing list
>> erlang-questions@REDACTED
>> http://erlang.org/mailman/listinfo/erlang-questions
>>
>
>
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