* Alerting: Fix unique violation when updating rule group with title chains/cycles
The uniqueness constraint for titles within an org+folder is enforced on every update within a transaction instead of on commit (deferred constraint). This means that there could be a set of updates that will throw a unique constraint violation in an intermediate step even though the final state is valid. For example, a chain of updates RuleA -> RuleB -> RuleC could fail if not executed in the correct order, or a swap of titles RuleA <-> RuleB cannot be executed in any order without violating the constraint.
The exact solution to this is complex and requires determining directed paths and cycles in the update graph, adding in temporary updates to break cycles, and then executing the updates in reverse topological order (see first commit in PR if curious).
This is not implemented here.
Instead, we choose a simpler solution that works in all cases but might perform more updates than necessary. This simpler solution makes a determination of whether an intermediate collision could occur and if so, adds a temporary title on all updated rules to break any cycles and remove the need for specific ordering.
In addition, we make sure diffs are executed in the following order: DELETES, UPDATES, INSERTS.
* Let alert rule service implement registry service
* Add count method to RuleStore interface
* Add implementation for deletion of alert rules
* Rename uid to folderUID in registry methods
* Check forceDeleteRule value for registry deletion
* Register alerting store with folder service
* Move folder test functions to separate package
* Add testing for alert rule counting, deletion
* Remove redundant count method
* Fix deleteChildrenInFolder signature
* Update pkg/services/ngalert/store/alert_rule.go
Co-authored-by: Sofia Papagiannaki <1632407+papagian@users.noreply.github.com>
* Add tests for nested folder deletion
* Refactor TestIntegrationNestedFolderService
* Add rules store as parameter for alertng provider
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Co-authored-by: Sofia Papagiannaki <1632407+papagian@users.noreply.github.com>
* Use suggested value for uid
* update the snapshot
* use __expr__
* replace all -100 with __expr__
* update snapshot
* more changes
* revert redundant change
* Use expr.DatasourceUID where it's possible
* generate files
* Set Dashboard and Panel IDs on rule group replacement
* fix comments and abbreviate test variable name
* Update pkg/services/ngalert/provisioning/alert_rules.go
Co-authored-by: Jean-Philippe Quéméner <JohnnyQQQQ@users.noreply.github.com>
Co-authored-by: Jean-Philippe Quéméner <JohnnyQQQQ@users.noreply.github.com>
* chore: add alias for InitTestDB and Session
Adds an alias for the sqlstore InitTestDB and Session, and updates tests using these to reduce dependencies on the sqlstore.Store.
* next pass of removing sqlstore imports
* last little bit
* remove mockstore where possible
* Wire up to full alert rule struct
* Extract group change detection logic to dedicated file
* GroupDiff -> GroupDelta for consistency
* Calculate deltas and handle backwards compatible requests
* Separate changes and insert/update/delete as needed
* Regenerate files
* Don't touch the DB if there are no changes
* Quota checking, delete unused file
* Mark modified records as provisioned
* Validation + a couple API layer tests
* Address linter errors
* Fix issue with UID assignment and rule creation
* Propagate top level group fields to all rules
* Tests for repeated updates and versioning
* Tests for quota and provenance checks
* Fix linter errors
* Regenerate
* Factor out some shared logic
* Drop unnecessary multiple nilchecks
* Use alternative strategy for rolling UIDs on inserted rules
* Fix tests, add back nilcheck, refresh UIDs during test
* Address feedback
* Add missing nil-check
* Alerting: move group update to alert rule service
* rename validateAlertRuleInterval to validateRuleGroupInterval
* init baseinterval correctly
* add seconds suffix
* extract validation function for reusability
* add context to err message
