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792ba4f0 Log categories can now be added to and removed from (moneromooo-monero)
48f92eb6 easylogging++: add categories getter (moneromooo-monero)
f35afe62 epee: factor log level/categories setting (moneromooo-monero)
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Also, set_log without parameters now prints the log categories
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This should prevent "silent" failures to start
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335fc8ab mlog: fix crash accessing stale data when rotating logs (moneromooo-monero)
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There might be privacy issues doing it by default
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a02d7458 mlog: make MONERO_LOGS env var understand N,logs type spec (moneromooo-monero)
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This ensures command output gets logged by default
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Because some people just won't even try to read what is written
and freak out because the word FATAL is in here, despite the
context making it clear it's not an error.
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We want to know which log categories are active.
This reverts commit 4f7bce6d20c72a1384289f7c35b7fe0ee796ed41.
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b7f85a30 mlog: default net.cn to FATAL (moneromooo-monero)
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Errors in this layer depend on how peers behave, and thus errors
are expected
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Makes it more likely to show up
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c3d7a198 mlog: probable fix for gmtime_r not being available on windows (moneromooo-monero)
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eg, 2,foo:ERROR,bar:INFO
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13dd102e mlog: fix default level/category mapping (moneromooo-monero)
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a854cec3 Make stack trace show up in log file with default settings (moneromooo-monero)
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It was not matching the LOG_PRINT_Lx mapping for 2/3/4
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using the MONERO_LOG_FORMAT environment variable.
Default is:
%datetime{%Y-%M-%d %H:%m:%s.%g}\t%thread\t%level\t%logger\t%loc\t%msg
Field list in easylogging++ documentation.
Don't forget to escape as needed.
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This replaces the epee and data_loggers logging systems with
a single one, and also adds filename:line and explicit severity
levels. Categories may be defined, and logging severity set
by category (or set of categories). epee style 0-4 log level
maps to a sensible severity configuration. Log files now also
rotate when reaching 100 MB.
To select which logs to output, use the MONERO_LOGS environment
variable, with a comma separated list of categories (globs are
supported), with their requested severity level after a colon.
If a log matches more than one such setting, the last one in
the configuration string applies. A few examples:
This one is (mostly) silent, only outputting fatal errors:
MONERO_LOGS=*:FATAL
This one is very verbose:
MONERO_LOGS=*:TRACE
This one is totally silent (logwise):
MONERO_LOGS=""
This one outputs all errors and warnings, except for the
"verify" category, which prints just fatal errors (the verify
category is used for logs about incoming transactions and
blocks, and it is expected that some/many will fail to verify,
hence we don't want the spam):
MONERO_LOGS=*:WARNING,verify:FATAL
Log levels are, in decreasing order of priority:
FATAL, ERROR, WARNING, INFO, DEBUG, TRACE
Subcategories may be added using prefixes and globs. This
example will output net.p2p logs at the TRACE level, but all
other net* logs only at INFO:
MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE
Logs which are intended for the user (which Monero was using
a lot through epee, but really isn't a nice way to go things)
should use the "global" category. There are a few helper macros
for using this category, eg: MGINFO("this shows up by default")
or MGINFO_RED("this is red"), to try to keep a similar look
and feel for now.
Existing epee log macros still exist, and map to the new log
levels, but since they're used as a "user facing" UI element
as much as a logging system, they often don't map well to log
severities (ie, a log level 0 log may be an error, or may be
something we want the user to see, such as an important info).
In those cases, I tried to use the new macros. In other cases,
I left the existing macros in. When modifying logs, it is
probably best to switch to the new macros with explicit levels.
The --log-level options and set_log commands now also accept
category settings, in addition to the epee style log levels.
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