Reindex corrupted discovery indexes (#6865)

packages/discovery-provider/ddl/migrations/0041_repair_indexes.sql

@@ -0,0 +1,21 @@
+CREATE EXTENSION IF NOT EXISTS amcheck;
+
+DO $$
+DECLARE
+    rec RECORD;
+BEGIN
+    FOR rec IN SELECT indexrelid::regclass AS index_name FROM pg_index WHERE indisvalid LOOP
+        RAISE NOTICE 'Checking index: %', rec.index_name;
+        BEGIN
+            -- Attempt to check the index
+            PERFORM bt_index_check(rec.index_name);
+        EXCEPTION WHEN OTHERS THEN
+            -- If an error occurs (indicating a potentially invalid index), reindex it
+            RAISE NOTICE 'Reindexing due to error in index: %', rec.index_name;
+            EXECUTE 'REINDEX INDEX ' || rec.index_name;
+            -- Log that reindexing is complete
+            RAISE NOTICE 'Reindexing completed for index: %', rec.index_name;
+        END;
+    END LOOP;
+END;
+$$ LANGUAGE plpgsql;