schema: relax choice constraint for delete

schema/mysql-migrations/upgrade_134.sql

@@ -0,0 +1,19 @@
+ALTER TABLE icinga_host
+  DROP FOREIGN KEY icinga_host_template_choice,
+  ADD CONSTRAINT icinga_host_template_choice_v2
+  FOREIGN KEY template_choice (template_choice_id)
+  REFERENCES icinga_host_template_choice (id)
+    ON DELETE SET NULL
+    ON UPDATE CASCADE;
+
+ALTER TABLE icinga_service
+  DROP FOREIGN KEY icinga_service_template_choice,
+  ADD CONSTRAINT icinga_service_template_choice_v2
+  FOREIGN KEY template_choice (template_choice_id)
+  REFERENCES icinga_service_template_choice (id)
+    ON DELETE SET NULL
+    ON UPDATE CASCADE;
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (134, NOW());

schema/mysql.sql

@@ -497,7 +497,7 @@ CREATE TABLE icinga_host (
   CONSTRAINT icinga_host_template_choice
     FOREIGN KEY choice (template_choice_id)
     REFERENCES icinga_host_template_choice (id)
-    ON DELETE RESTRICT
+    ON DELETE SET NULL
     ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
@@ -653,7 +653,7 @@ CREATE TABLE icinga_service (
   CONSTRAINT icinga_service_template_choice
     FOREIGN KEY choice (template_choice_id)
     REFERENCES icinga_service_template_choice (id)
-    ON DELETE RESTRICT
+    ON DELETE SET NULL
     ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
@@ -1556,4 +1556,4 @@ CREATE TABLE icinga_user_resolved_var (
 
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (133, NOW());
+  VALUES (134, NOW());

schema/pgsql-migrations/upgrade_134.sql

@@ -0,0 +1,19 @@
+ALTER TABLE icinga_host
+  DROP CONSTRAINT icinga_host_template_choice,
+  ADD CONSTRAINT icinga_host_template_choice_v2
+  FOREIGN KEY (template_choice_id)
+  REFERENCES icinga_host_template_choice (id)
+    ON DELETE SET NULL
+    ON UPDATE CASCADE;
+
+ALTER TABLE icinga_service
+  DROP CONSTRAINT icinga_service_template_choice,
+  ADD CONSTRAINT icinga_service_template_choice_v2
+  FOREIGN KEY (template_choice_id)
+  REFERENCES icinga_service_template_choice (id)
+    ON DELETE SET NULL
+    ON UPDATE CASCADE;
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (134, NOW());

schema/pgsql.sql

@@ -618,7 +618,7 @@ CREATE TABLE icinga_host (
   CONSTRAINT icinga_host_template_choice
     FOREIGN KEY (template_choice_id)
     REFERENCES icinga_host_template_choice (id)
-    ON DELETE RESTRICT
+    ON DELETE SET NULL
     ON UPDATE CASCADE
 );
 
@@ -803,7 +803,7 @@ CREATE TABLE icinga_service (
   CONSTRAINT icinga_service_template_choice
     FOREIGN KEY (template_choice_id)
     REFERENCES icinga_service_template_choice (id)
-    ON DELETE RESTRICT
+    ON DELETE SET NULL
     ON UPDATE CASCADE
 );
 
@@ -1833,4 +1833,4 @@ CREATE INDEX user_resolved_var_schecksum ON icinga_user_resolved_var (checksum);
 
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (133, NOW());
+  VALUES (134, NOW());