firefox.collectMozLog does not work on Android

[acreskeyMoz]

Have you read the documentation?

• Yes, I've read the how to make a reproducable bug guide
• Yes, I've read the how to debug my script guide

URL

No website

What are you trying to accomplish

Collecting moz_logs is very helpful for Firefox performance engineers.

As far as I can tell, firefox.collectMozLog does not copy the generated log file when running on Firefox for Android.

See usage:
https://github.com/search?q=repo%3Asitespeedio%2Fbrowsertime%20collectMozLog&type=code

What browser did you use?

Firefox

How to reproduce

Run a gecko application on Android (e.g. geckoview_example) and pass in the arguments, `--firefox.collectMozLog --firefox.setMozLog="timestamp,nsHttp:5"`

Expected outcome:
The moz_log.txt files are copied back along with other artifacts like performance profiles

Actual outcome:
No moz_log.txt files are copied back.

Log output

No response

[soulgalore]

Hi @acreskeyMoz , do you know where the log file ends up? Do geckodriver pass on process.env.MOZ_LOG_FILE so the actual directory should then be on the phone?

[acreskeyMoz]

Hi, @soulgalore, that's a good question. But even if geckodriver doesn't pass that along, we could come up with a good default.
Let me try a couple of things, maybe I can get this working and put up a patch.