log skipped, performed and duration for migrations (#31722) (#31754)

Signed-off-by: bergquist <carl.bergquist@gmail.com>
(cherry picked from commit c899bf3592)

Co-authored-by: Carl Bergquist <carl.bergquist@gmail.com>

pkg/services/sqlstore/migrator/migrator.go

@@ -79,11 +79,15 @@ func (mg *Migrator) Start() error {
 		return err
 	}
 
+	migrationsPerformed := 0
+	migrationsSkipped := 0
+	start := time.Now()
 	for _, m := range mg.migrations {
 		m := m
 		_, exists := logMap[m.Id()]
 		if exists {
 			mg.Logger.Debug("Skipping migration: Already executed", "id", m.Id())
+			migrationsSkipped++
 			continue
 		}
 
@@ -107,6 +111,9 @@ func (mg *Migrator) Start() error {
 			}
 			record.Success = true
 			_, err = sess.Insert(&record)
+			if err == nil {
+				migrationsPerformed++
+			}
 			return err
 		})
 		if err != nil {
@@ -114,6 +121,8 @@ func (mg *Migrator) Start() error {
 		}
 	}
 
+	mg.Logger.Info("migrations completed", "performed", migrationsPerformed, "skipped", migrationsSkipped, "duration", time.Since(start))
+
 	// Make sure migrations are synced
 	return mg.x.Sync2()
 }