discogs: Apply rate limiting to all requests

I have disabled Musicbrainz as discussed in #400 while I initially import my entire collection while in timid mode. I was running into exceptions every couple minutes as a result of HTTP 429 errors: discogs_client.exceptions.HTTPError: 429: You are making requests too quickly.

I found that there is a mechanism to limit requests to their API but that it is not evenly applied. Such as when setting an ID for a release, it was just being sent without any regard to the delay. I wrapped that call but still was running into issues; after finding a couple more calls to the API and wrapping them, I was able to keep the 429 errors from happening with such regularity. I then changed the rate limiter to 50 instead of 60 and haven’t seen a 429 since.

Here are the lines I wrapped with self.request_start() and self.request_finished(): https://github.com/beetbox/beets/blob/master/beetsplug/discogs.py#L218 https://github.com/beetbox/beets/blob/master/beetsplug/discogs.py#L268 https://github.com/beetbox/beets/blob/master/beetsplug/discogs.py#L294

[JOJ0]

Very welcome, and a big big thank you back! beets is such an amazing tool! Still learning how to use it for my ideas but I am getting there and love it already 🤩

[sampsyo]

Thank you for pointing this out! (And for maintaining the library!!) We removed all rate limiting on our side recently in https://github.com/beetbox/beets/pull/4118.