migration - drop events system

Signed-off-by: Gaurav Gahlot <[email protected]>

db/migration/2021032610300-drop-events-system.go

@@ -0,0 +1,25 @@
+package migration
+
+import migrate "github.com/rubenv/sql-migrate"
+
+// Get202103261030 removes the event system tables and triggers.
+//
+// Fixes: https://github.com/tinkerbell/tink/issues/464
+//
+// The event system in place relies on triggers.
+// It causes many problems because of its 8k characters limitation.
+// CAPT is suffering from this limitation.
+func Get2021032610300() *migrate.Migration {
+	return &migrate.Migration{
+		Id: "2021032610300-drop-events-system",
+		Up: []string{`
+DROP TABLE IF EXISTS events CASCADE;
+DROP TRIGGER IF EXISTS events_channel ON events;
+DROP TRIGGER IF EXISTS hardware_event_trigger ON hardware;
+DROP TRIGGER IF EXISTS template_event_trigger ON template;
+DROP TRIGGER IF EXISTS workflow_event_trigger ON workflow;
+DROP TYPE IF EXISTS resource_type;
+DROP TYPE IF EXISTS event_type;
+`},
+	}
+}

db/migration/migration.go

@@ -11,6 +11,7 @@ var migrations = []func() *migrate.Migration{
 	Get202012041103,
 	Get202012091055,
 	Get2020121691335,
+	Get2021032610300,
 }
 
 func GetMigrations() *migrate.MemoryMigrationSource {