feat: manage grafana pgsql db

- add pgsql backend capabilities for grafana
- create/manage pgsql database for grafana
- fix psql_is_slave fact to work on all current patroni clusters
- fix extra } in resources
- fix unless in psql grant commands
- fix add database owner
- fix disabled schema permissions, the unless didnt work

site/profiles/manifests/metrics/grafana.pp

@@ -3,13 +3,13 @@ class profiles::metrics::grafana (
   Stdlib::Port $http_port   = 8080,
   String    $app_mode       = 'production',
   Boolean   $allow_sign_up  = false,
-  Boolean   $mysql_backend  = true,
-  String    $mysql_user     = 'grafana',
-  String    $mysql_name     = 'grafana',
-  String    $mysql_pass     = fqdn_rand_string(16),
-  Stdlib::Host $mysql_host  = '127.0.0.1',
-  Stdlib::Port $mysql_port  = 3306,
-
+  Boolean   $mysql_backend  = false,
+  Boolean   $pgsql_backend  = false,
+  String    $db_user     = 'grafana',
+  String    $db_name     = 'grafana',
+  String    $db_pass     = fqdn_rand_string(16),
+  Stdlib::Host $db_host  = '127.0.0.1',
+  Stdlib::Port $db_port  = 5432,
 ) {
 
   # set the fqdn
@@ -18,26 +18,40 @@ class profiles::metrics::grafana (
   # when using mysql backend
   if $mysql_backend {
 
-    @@mysql_user { "${mysql_user}@${facts['networking']['fqdn']}":
+    @@mysql_user { "${db_user}@${facts['networking']['fqdn']}":
       ensure        => present,
-      password_hash => mysql::password(fqdn_rand_string(16)),
+      password_hash => mysql::password($db_pass),
       tag           => $facts['region'],
     }
 
-    @@mysql_grant { "${mysql_user}@${facts['networking']['fqdn']}/${mysql_name}.*":
+    @@mysql_grant { "${db_user}@${facts['networking']['fqdn']}/${db_name}.*":
       ensure     => present,
-      table      => "${mysql_name}.*",
-      user       => "${mysql_user}@${facts['networking']['fqdn']}",
+      table      => "${db_name}.*",
+      user       => "${db_user}@${facts['networking']['fqdn']}",
       privileges => ['ALL'],
       tag        => $facts['region'],
     }
 
     $database_config = {
       type     => 'mysql',
-      host     => "${mysql_host}:${mysql_port}",
-      name     => $mysql_name,
-      user     => $mysql_user,
-      password => $mysql_pass.unwrap,
+      host     => "${db_host}:${db_port}",
+      name     => $db_name,
+      user     => $db_user,
+      password => $db_pass.unwrap,
+    }
+  }
+
+  # when using mysql backend
+  if $pgsql_backend {
+
+    include profiles::sql::postgresdb
+
+    $database_config = {
+      type     => 'postgres',
+      host     => "${db_host}:${db_port}",
+      name     => $db_name,
+      user     => $db_user,
+      password => $db_pass.unwrap,
     }
   }