Give queue worker thread a name.

[t-mart]

Hey @Delgan,

I'm doing some debugging with a multi-threaded application and also have a Loguru sink with enqueue=True. (As we've discussed before) this instructs Loguru to manage a thread that processes a queue of log records.

Currently, that thread's name is the default one:

By default, a unique name is constructed of the form “Thread-N” where N is a small decimal number.

https://docs.python.org/3.8/library/threading.html#threading.Thread

For identification purposes, it'd be helpful to see a descriptive name for this thread in environments/debuggers/etc that support listing threads.

The name I've chosen loguru-writer.

This doesn't affect the operation of the Loguru in any other way:

[The name is] A string used for identification purposes only. It has no semantics.

https://docs.python.org/3.8/library/threading.html#threading.Thread.name

• Give queue worker thread a name.
• Add change to CHANGELOG.rst.
• Tox passes.

[t-mart]

Hmm. It seems I've caused code coverage to drop. Would you help me interpret why?

The drop seems to stem from a blank line?

[Delgan]

Good idea, thanks for the contribution!

What do you think of appending the handler _id to the thread name, like name="loguru-writer-%d" % self._id? This would give even more information, and avoid confusion if there are several running threads due to multiple sinks added with enqueue=true.

I don't know why coverage check failed... I encountered this problem once, on this same line. This line is executed in only one Travis build (Python 3.5.2), maybe there is a conflict with another build (Python 3.5). Particularly, the .travis.yml lists six builds while there is only five in the tox.ini file. Anyway, I restarted the build and it worked fine. 🙂

[t-mart]

What do you think of appending the handler _id

Sounds good, as long as you are sure that will always be a successful interpolation (i.e. handlers always have a numeric _id attribute?).

I won't be able to add this change for probably around 24 hours. If you want to jump in and add it, no problem.

[Delgan]

Yeah, don't worry, I will update the PR if you don't have the time. 👍

[t-mart]

@Delgan, the -<id> suffix has been added as you suggested.

[Delgan]

Great, thanks a lot!