Users: Expire old user invites (#27361)

* expire with existng cleanup service

* expire with new temp user service

* make Drone happy :)

* add expiry status

* remove other approach

* cleanup

* add test for idempotency

* add migration from datetime to unix ts

* update cmd names

* change lifetime config to duration

* remove unnecessart formatting

* add comment

* update docs

* remove max bound and introduce min error

* simplify sql

* remove comment

* allow any outstanding to exist for at least 24 hours

* revert created ts change

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>

* add extra state check to cleanup step

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>

pkg/setting/setting.go

@@ -5,6 +5,7 @@ package setting
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -311,6 +312,9 @@ type Cfg struct {
 
 	DateFormats DateFormats
 
+	// User
+	UserInviteMaxLifetime time.Duration
+
 	// Annotations
 	AlertingAnnotationCleanupSetting   AnnotationCleanupSettings
 	DashboardAnnotationCleanupSettings AnnotationCleanupSettings
@@ -1078,6 +1082,17 @@ func readUserSettings(iniFile *ini.File, cfg *Cfg) error {
 	ViewersCanEdit = users.Key("viewers_can_edit").MustBool(false)
 	cfg.EditorsCanAdmin = users.Key("editors_can_admin").MustBool(false)
 
+	userInviteMaxLifetimeVal := valueAsString(users, "user_invite_max_lifetime_duration", "24h")
+	userInviteMaxLifetimeDuration, err := gtime.ParseInterval(userInviteMaxLifetimeVal)
+	if err != nil {
+		return err
+	}
+
+	cfg.UserInviteMaxLifetime = userInviteMaxLifetimeDuration
+	if cfg.UserInviteMaxLifetime < time.Minute*15 {
+		return errors.New("the minimum supported value for the `user_invite_max_lifetime_duration` configuration is 15m (15 minutes)")
+	}
+
 	return nil
 }