# What this PR does
Restart `send_link_to_channel_message_or_fallback_to_full_alert_group`
task without retry on the first run if alert group telegram message
doesn't exist. On the second run raise Exception
## Which issue(s) this PR fixes
https://github.com/grafana/oncall-private/issues/2492
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
# What this PR does
Fixes https://github.com/grafana/oncall-private/issues/2154
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
# What this PR does
```bash
❯ mypy .
Success: no issues found in 595 source files
```
- re-enable the mypy CI check
- fixes all `django-manager-missing` mypy errors
- disable all other rules currently giving mypy errors
- changing the approach here. rather than enforcing that backend
contributors fix >= 1 `mypy` error on their PR, lets simply disable all
the rules that're currently returning errors and slowly re-enable these
one at a time #2392
## Checklist
- [ ] Unit, integration, and e2e (if applicable) tests updated (N/A)
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required) (N/A)
- [ ] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required) (N/A)
# What this PR does
- Adds [`mypy` static type checking](https://mypy-lang.org/) to our CI
pipeline. Currently there is still a **ton** of errors being returned by
the tool, as we'll need to fix pre-existing errors. I think we can
slowly chip away at these errors in small PRs, doing them all in one
large PR is likely very risky.
- Also, this PR starts chipping away at one of the main type errors that
we have which is accessing the `datetime` class (from the `datetime`
library) or `timedelta` function on the `django.utils.timezone` module.
Basically we should be instead accessing these two objects from the
native `datetime` module. This makes sense because the [`__all__`
attribute](https://github.com/django/django/blob/main/django/utils/timezone.py#L14-L30)
in `django.utils.timezone` does not re-export `datetime` or `timedelta`.
- splits `engine` dependencies out into `requirements.txt` and
`requirements-dev.txt`
## Checklist
- [ ] Unit, integration, and e2e (if applicable) tests updated (N/A)
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required) (N/A)
- [ ] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required) (N/A)
# What this PR does
Makes Telegram integration consistent with the rest of the system so it
uses the word "alert group" instead of "incident" when referring to
alert groups.
## Checklist
- [x] Tests updated
- [ ] Documentation added (N/A)
- [x] `CHANGELOG.md` updated
* allow posting DM messages to Telegram without connecting a channel
* fix get_channel_for_alert_group, add tests
* add docs on usage without channel connection
