There are some corner cases with streams that cause them to not emit
finish close or end events which in turn means that code liseting for
these events directly may end up hanging forever. Use stream.finished
to detect end of streams which will handle these cases correctly.
The interface provided by Winston is unusably slow for querying large
logs. Reimplement the log querying with both forwards and backwards
line reading and a simple file based index to skip files which do not
contain any lines matching the filter.
Move the default location of the log files into a configurable logs
folder and split the written logs up by UTC date to more easily allow
deleting of old logs to be performed. The log rotation is implemented
by winston-daily-rotate-file.
The old log format will automatically be migrated to the new format and
location if the target folder for the new logs don't yet exists.
Use relative imports in lib to avoid an issue with webpack thinking
absolute imports inside @clusterio/lib are for a separate module and
giving out warnings for it being missing in package.json.
Add log query and log follow commands which allows inspection of the
combined cluster log. Past entries can be queried via the new queryLog
request. The log is stored into a single flat file for now, though the
performance of this may good enough.
Add winston based logger for master, slave, ctl, lib, and web_ui code.
Logging done from slaves and instances are sent to the master server and
tagged with the instance and/or slave it originated from. This allows
for example error messages to propagate back to the source that iniated
the action. The master server also stores the log to allow it to be
queried at a later point. For slaves a copy of the slave's log is also
stored locally.
Hornwitser