Catch stderr and output to logger

[tonib]

Hi,

I suggest that sys.stderr is catched and output to the logger like below

    class StderrFaker:
        def write(self, message):
            message = message.strip()
            env.log.error(message)
            
    sys.stderr = StderrFaker()

[daniel]

Not a bad idea.

[anonymous]

I'm not sure this doesnt breaks the traceback in the webbrowser. Which is quite useful.

One would probably want both outputs.

[anonymous]

Multiple levels of verbose debug info might be nice too.

[Jonas Borgström]

I don't think this will work when using ModPython. The log-file is per project but sys.stderr is global.

I'm moving this into the future until we know if this is true.

[Christopher Lenz]

So maybe implement it only in the CGI frontend​?

[Christian Boos]

One possibility would be to have a dedicated logger for the stderr, and prefix each line by the thread id, which would eventually make it possible to relate lines from that files to lines from other logs, provided the thread id is also used there (as this is now possible).

See also #3062 and #4552.

[Christian Boos]

Milestone 1.0 deleted

[Ryan J Ollos]

It might be possible to implement comment:8 after #7820.

This ticket doesn't provide a strong motivation of use-case for the feature. If there is one, we can reconsider, but closing for now.