Backport #20847
If permissions are incorrect for writing to the doctor log simply disable the log file
instead of panicing.
Related #20570
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: delvh <dev.lh@web.de>
Continues on from #19202.
Following the addition of pprof labels we can now more easily understand the relationship between a goroutine and the requests that spawn them.
This PR takes advantage of the labels and adds a few others, then provides a mechanism for the monitoring page to query the pprof goroutine profile.
The binary profile that results from this profile is immediately piped in to the google library for parsing this and then stack traces are formed for the goroutines.
If the goroutine is within a context or has been created from a goroutine within a process context it will acquire the process description labels for that process.
The goroutines are mapped with there associate pids and any that do not have an associated pid are placed in a group at the bottom as unbound.
In this way we should be able to more easily examine goroutines that have been stuck.
A manager command `gitea manager processes` is also provided that can export the processes (with or without stacktraces) to the command line.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Add auto logging of goroutine pid label
This PR uses unsafe to export the hidden runtime_getProfLabel function from the
runtime package and then casts the result to a map[string]string.
We can then interrogate this map to get the pid label from the goroutine allowing
us to log it with any logging request.
Reference #19202
Signed-off-by: Andrew Thornton <art27@cantab.net>
Refactor Logger to make a logger interface and make it possible to
wrap loggers for specific purposes.
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
