* API: Improve error handling (#26934)
* New ErrUserAlreadyExists error has been introduced
* Create user endpoint returns 412 Precondition Failed on ErrUserAlreadyExists errors
* Make ErrUserAlreadyExists error message clearer
Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
* Use errors.Is instead of equality comparator on AdminCreateUser handler
* Improve sqlstore/user test definition
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Improve sqlstore/user tests for ErrUserAlreadyExists cases
* Remove no needed string fmt and err declaration on sqlstore/user tests
* Code improvements for sqlstore/user tests
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Use err.Error() instead of sentinel error value on AdminCreateUser
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Add ErrUserAlreadyExists handling for signup & org invite use cases
Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Allow API to assign new user to a specific organization
* Add defer block to test
* Add API tests and return 400 instead of 500 for bad orgId
* Minor test improvements
* Metrics: remove unused metrics
Metric `M_Grafana_Version` is not used anywhere, nor the mentioned
`M_Grafana_Build_Version`. Seems to be an artefact?
* Metrics: make the naming consistent
* Metrics: add comments to exported vars
* Metrics: use proper naming
Fixes#18110
* Users: add is_disabled column
* Users: disable users removed from LDAP
* Auth: return ErrInvalidCredentials for failed LDAP auth
* User: return isDisabled flag in user search api
* User: mark disabled users at the server admin page
* Chore: refactor according to review
* Auth: prevent disabled user from login
* Auth: re-enable user when it found in ldap
* User: add api endpoint for disabling user
* User: use separate endpoints to disable/enable user
* User: disallow disabling external users
* User: able do disable users from admin UI
* Chore: refactor based on review
* Chore: use more clear error check when disabling user
* Fix login tests
* Tests for disabling user during the LDAP login
* Tests for disable user API
* Tests for login with disabled user
* Remove disable user UI stub
* Sync with latest LDAP refactoring
