eliminate hafd.table_schema from usage

src/hive_fork_manager/hive_fork_manager_update_script_generator.sh.in

@@ -98,8 +98,8 @@ verify_table_schema() {
   psql_do -a -d "$DB_NAME_AFTER_UPDATE" -c 'CREATE EXTENSION hive_fork_manager CASCADE;'
   psql_do -d "$DB_NAME_AFTER_UPDATE" -q -t -A -f "$SCRIPTPATH/update.sql"
 
-  BEFORE_UPDATE=$(psql_do -d "$DB_NAME" -t -A -c "SELECT schema_hash FROM hive_update.create_database_hash()")
-  AFTER_UPDATE=$(psql_do -d "$DB_NAME_AFTER_UPDATE" -t -A -c "SELECT schema_hash FROM hive_update.create_database_hash()")
+  BEFORE_UPDATE=$(psql_do -d "$DB_NAME" -t -A -c "SELECT hive_update.create_database_hash()")
+  AFTER_UPDATE=$(psql_do -d "$DB_NAME_AFTER_UPDATE" -t -A -c "SELECT hive_update.create_database_hash()")
   if [ "$BEFORE_UPDATE" = "$AFTER_UPDATE" ]; then
     echo "The table schema is correct, verification completed."
     echo "Dropping temporary database"

src/hive_fork_manager/update.sql

@@ -336,28 +336,20 @@ $BODY$
 
 DROP FUNCTION IF EXISTS hive_update.create_database_hash;
 CREATE FUNCTION hive_update.create_database_hash()
-    RETURNS SETOF hafd.table_schema
+    RETURNS UUID
     LANGUAGE plpgsql
-    VOLATILE
+    STABLE
 AS
 $BODY$
 DECLARE
-    ts hafd.table_schema%ROWTYPE;
     _tmp TEXT;
     _provider_hashes TEXT;
 BEGIN
-    TRUNCATE hafd.table_schema;
-
     SELECT string_agg(table_schema, ' | ') FROM hive_update.calculate_schema_hash() INTO _tmp;
-
     SELECT string_agg(provider || hash, ' | ') FROM hive_update.calculate_state_provider_hashes() INTO _provider_hashes;
 
     _tmp = _tmp || _provider_hashes;
-    INSERT INTO hafd.table_schema VALUES ('hafd', MD5(_tmp)::uuid);
-
-    ts.schema_name := 'hafd';
-    ts.schema_hash := MD5(_tmp)::uuid;
-RETURN NEXT ts;
+    RETURN MD5(_tmp)::uuid;
 END;
 $BODY$
 ;

tests/integration/functional/hive_fork_manager/state_providers/hash.sql

@@ -27,7 +27,7 @@ BEGIN
     SELECT STRING_AGG( hash, '|') FROM hive_update.calculate_state_provider_hashes() INTO __all_before_hashes;
     SELECT * FROM hive_update.calculate_state_provider_hash( 'KEYAUTH'::hafd.state_providers ) INTO __keyauth_before_hash;
 
-    SELECT schema_hash FROM hive_update.create_database_hash()  INTO __database_hash_before;
+    SELECT hive_update.create_database_hash()  INTO __database_hash_before;
 
     EXECUTE format( 'CREATE OR REPLACE FUNCTION hive.start_provider_keyauth( _context hafd.context_name )
     RETURNS TEXT[]
@@ -43,7 +43,7 @@ BEGIN
 
     SELECT STRING_AGG( hash, '|') FROM hive_update.calculate_state_provider_hashes() INTO __all_after_hashes;
     SELECT * FROM hive_update.calculate_state_provider_hash( 'KEYAUTH'::hafd.state_providers ) INTO __keyauth_after_hash;
-    SELECT schema_hash FROM hive_update.create_database_hash()  INTO __database_hash_after;
+    SELECT hive_update.create_database_hash()  INTO __database_hash_after;
 
     ASSERT __all_after_hashes != __all_before_hashes, 'Hashes not changed after modification';
     ASSERT __keyauth_after_hash != __keyauth_before_hash, 'Hash not changed after modification';