Merge pull request #70 from sebix/sql

fix: CREATE ROLE idempotency

Author: wagner-intevation

sql/notifications.sql

@@ -9,12 +9,20 @@
 BEGIN;
 
 
-CREATE ROLE IF NOT EXISTS eventdb_owner
-    NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
-CREATE ROLE IF NOT EXISTS eventdb_insert
-    NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
-CREATE ROLE IF NOT EXISTS eventdb_send_notifications
-    NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
+DO $$ BEGIN
+    CREATE ROLE eventdb_owner NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;
+
+DO $$ BEGIN
+    CREATE ROLE eventdb_insert NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;
+
+DO $$ BEGIN
+    CREATE ROLE eventdb_send_notifications NOLOGIN NOSUPERUSER NOINHERIT NOCREATEDB CREATEROLE;
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;
 
 ALTER DATABASE :"DBNAME" OWNER TO eventdb_owner;