We have shifted to a generic queue to send all the emails. This queue
can retry in case of network issues; this makes sure that the emails are
always sent.
This commit just copies all the code from MissedMessageSendingWorker
class to a new EmailSendingWorker class. All the logic to send an email
through a queue was already there. This commit only makes the logic
generic. It does so by creating a special purpose queue called
'email_senders' to send any type of email. To make
MissedMessageSendingWorker still work we derive it from
EmailSendingWorker. All the tests that were testing
MissedMessageSendingWorker now run against EmailSendingWorker.
Such payloads are generated when a GitLab repository has merge
request approvals enabled and a project member approves a merge
request. Approving is not the same as merging.
This reverts commit 620b2cd6e.
Contributors setting up a new development environment were getting
errors like this:
```
++ dirname tools/do-destroy-rebuild-database
[...]
+ ./manage.py purge_queue --all
Traceback (most recent call last):
[...]
File "/home/zulipdev/zulip/zproject/legacy_urls.py", line 3, in <module>
import zerver.views.streams
File "/home/zulipdev/zulip/zerver/views/streams.py", line 187, in <module>
method_kwarg_pairs: List[FuncKwargPair]) -> HttpResponse:
File "/usr/lib/python3.5/typing.py", line 1025, in __getitem__
tvars = _type_vars(params)
[...]
File "/usr/lib/python3.5/typing.py", line 277, in _get_type_vars
for t in types:
TypeError: 'ellipsis' object is not iterable
```
The issue appears to be that we're using the `typing` module from the
3.5 stdlib, rather than the `typing=3.6.2` in our requirements files,
and that doesn't understand the `Callable[..., HttpResponse]` that
appears in the definition of `FuncKwargPair`.
Revert for now to get provision working again; at least one person
reports that reverting this sufficed. We'll need to do more testing
before putting this change back in.
The name `create_logger` suggests something much bigger than what this
function actually does -- the logger doesn't any more or less exist
after the function is called than before. Its one real function is to
send logs to a specific file.
So, pull out that logic to an appropriately-named function just for
it. We already use `logging.getLogger` in a number of places to
simply get a logger by name, and the old `create_logger` callsites can
do the same.
From the docs:
> This function does nothing if the root logger already has handlers
> configured for it.
Which we do if we've started up Django and configured settings, and in
particular allowed Django to process `settings.LOGGING`.
So, cut it out -- all it can do is confuse people about how logging
works.
If we ever actually used the `log_format` parameter, this would be
doubly confused, because only the first call would have any effect.