dosubot[bot] commented on issue #31309:
URL: https://github.com/apache/superset/issues/31309#issuecomment-2521095941
<!-- Answer -->
To address the issue of Slack API rate-limit errors when fetching channels
in Superset, you can implement retry logic using the `backoff` library. This
library is already imported in the `slack.py` file, and you can use the
`@backoff.on_exception` decorator to handle retries for specific exceptions
like `SlackApiError`, `SlackClientError`, and others related to rate limits and
transient errors.
Here's an example of how you can implement this:
```python
import backoff
from slack_sdk.errors import SlackApiError, SlackClientError
@backoff.on_exception(
backoff.expo,
(SlackApiError, SlackClientError),
factor=10,
base=2,
max_tries=5,
jitter=backoff.full_jitter,
)
def get_channels_with_search(...) -> list[str]:
# Your existing logic to fetch channels
...
```
This code uses exponential backoff with a factor of 10, a base of 2, and a
maximum of 5 retries. It also includes jitter to randomize the wait time
between retries, which can help to avoid thundering herd problems. This setup
will help in handling rate-limit errors (`ratelimited`) and other transient
issues like `request_timeout`, `service_unavailable`, and `internal_error`
<sup>[[1]](https://github.com/apache/superset/blob/master/superset/reports/notifications/slack.py)</sup>.
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