Remove API code for legacy alerting management pages.

[linuspahl]

Description

A while ago we rewrote the alerting UI. With this PR we removed the related legacy UI code. The next step is removing the related backend code.

Here is an overview of the no longer needed API routes.

/streams/${streamId}/alerts/conditions
/streams/${streamId}/alerts/conditions/${alertConditionId}
/streams/${streamId}/alerts/sendDummyAlert
/streams/${streamId}/alerts/conditions/${conditionId}/test
/alerts/conditions/types
/alerts/conditions
/streams/alerts/${alertId}
/streams/${streamId}/alerts
/streams/alerts/paginated
/streams/alerts

Please note we still want to support legacy alarm callbacks, until the next major release.

Your Environment

• Graylog Version: 4.3

[boosty]

Sounds like a candidate for removal in 5.0.

[mpfz0r]

We can also remove all the stream related alerting logic: https://github.com/Graylog2/graylog2-server/blob/master/graylog2-server/src/main/java/org/graylog2/streams/StreamService.java#L65-L83

[patrickmann]

For those less familiar (like myself): This issue only aims to remove backend code that relates to stream-based alerting. It does not remove legacy alarm callbacks. Eventually we would want to remove those too; but that will require migration code to ensure that 3rd party plugins don't break.