feat: Allow overriding labels

README.md

@@ -59,7 +59,7 @@ TODO
 | disable\_provenance | Allow modifying the rule group from other sources than Terraform or the Grafana API. | `bool` | `false` | no |
 | folder\_uid | The UID of the Grafana folder that the alerts belongs to. | `string` | n/a | yes |
 | org\_id | The Organization ID of of the Grafana Alerting rule groups. (Only supported with basic auth, API keys are already org-scoped) | `string` | `null` | no |
-| overrides | Overrides per Alert rule | <pre>map(object({<br>    alert_threshold = optional(number)<br>    exec_err_state  = optional(string)<br>    is_paused       = optional(bool)<br>    no_data_state   = optional(string)<br>  }))</pre> | `{}` | no |
+| overrides | Overrides per Alert rule | <pre>map(object({<br>    alert_threshold = optional(number)<br>    exec_err_state  = optional(string)<br>    is_paused       = optional(bool)<br>    no_data_state   = optional(string)<br>    labels          = optional(map(string))<br>  }))</pre> | `{}` | no |
 | prometheus\_alerts\_file\_path | Path to the Prometheus Alerting rules file | `string` | n/a | yes |
 
 ### Outputs

grafana_alert.tf

@@ -25,7 +25,7 @@ resource "grafana_rule_group" "this" {
       condition = "ALERTCONDITION"
 
       annotations = {for k, v in rule.value.annotations : k => replace(v, "$value", "$values.QUERY_RESULT.Value")}
-      labels      = rule.value.labels
+      labels      = merge(rule.value.labels, try(var.overrides[rule.value.alert].labels, {}))
 
       exec_err_state = try(var.overrides[rule.value.alert].exec_err_state, null)
       is_paused      = try(var.overrides[rule.value.alert].is_paused, null)

test/test.tf

@@ -34,6 +34,10 @@ module "test_vmagent" {
   overrides = {
     "TooManyWriteErrors" = {
       alert_threshold = 1
+
+      labels = {
+        mycustomlabel = "foobar"
+      }
     }
   }
 }

variables.tf

@@ -20,6 +20,7 @@ variable "overrides" {
     exec_err_state  = optional(string)
     is_paused       = optional(bool)
     no_data_state   = optional(string)
+    labels          = optional(map(string))
   }))
   default = {}
 }