* Always use cache: stop passing skipCache among ngalert functions
* Add updated column
* Scheduler initial draft
* Add retry on failure
* Allow settting/updating alert definition interval
Set default interval if no interval is provided during alert definition creation.
Keep existing alert definition interval if no interval is provided during alert definition update.
* Parameterise alerting.Ticker to run on custom interval
* Allow updating alert definition interval without having to provide the queries and expressions
* Add schedule tests
* Use xorm tags for having initialisms with consistent case in Go
* Add ability to pause/unpause the scheduler
* Add alert definition versioning
* Optimise scheduler to fetch alert definition only when it's necessary
* Change MySQL data column to mediumtext
* Delete alert definition versions
* Increase default scheduler interval to 10 seconds
* Fix setting OrgID on updates
* Add validation for alert definition name length
* Recreate tables
* Alerting NG: prototype v2 (WIP)
* Separate eval package
* Modify eval alert definition endpoint
* Disable migration if ngalert is not enabled
* Remove premature test
* Fix lint issues
* Delete obsolete struct
* Apply suggestions from code review
* Update pkg/services/ngalert/ngalert.go
Co-authored-by: Kyle Brandt <kyle@grafana.com>
* Add API endpoint for listing alert definitions
* Introduce index for alert_definition table
* make ds object for expression to avoid panic
* wrap error
* Update pkg/services/ngalert/eval/eval.go
* Swith to backend.DataQuery
* Export TransformWrapper callback
* Fix lint issues
* Update pkg/services/ngalert/ngalert.go
Co-authored-by: Kyle Brandt <kyle@grafana.com>
* Validate alert definitions before storing them
* Introduce AlertQuery
* Add test
* Add QueryType in AlertQuery
* Accept only float64 (seconds) durations
* Apply suggestions from code review
* Get rid of bus
* Do not export symbols
* Fix failing test
* Fix failure due to service initialization order
Introduce MediumHigh service priority and assign it to backendplugin
service
* Fix test
* Apply suggestions from code review
* Fix renamed reference
Co-authored-by: Kyle Brandt <kyle@grafana.com>
