Add cpu_idle setting, default to true (#132)

This allows CPU to be throttle when the service is idle.

---------

Signed-off-by: Nghia Tran <[email protected]>

Author: tcnghia

modules/regional-go-service/README.md

@@ -89,7 +89,7 @@ No requirements.
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
-| <a name="input_containers"></a> [containers](#input\_containers) | The containers to run in the service.  Each container will be run in each region. | <pre>map(object({<br>    source = object({<br>      base_image  = optional(string, "cgr.dev/chainguard/static:latest-glibc")<br>      working_dir = string<br>      importpath  = string<br>    })<br>    args = optional(list(string), [])<br>    ports = optional(list(object({<br>      name           = optional(string, "http1")<br>      container_port = number<br>    })), [])<br>    resources = optional(object({<br>      limits = object({<br>        cpu    = string<br>        memory = string<br>      })<br>    }), null)<br>    env = optional(list(object({<br>      name  = string<br>      value = optional(string)<br>      value_source = optional(object({<br>        secret_key_ref = object({<br>          secret  = string<br>          version = string<br>        })<br>      }), null)<br>    })), [])<br>    regional-env = optional(list(object({<br>      name  = string<br>      value = map(string)<br>    })), [])<br>    volume_mounts = optional(list(object({<br>      name       = string<br>      mount_path = string<br>    })), [])<br>  }))</pre> | n/a | yes |
+| <a name="input_containers"></a> [containers](#input\_containers) | The containers to run in the service.  Each container will be run in each region. | <pre>map(object({<br>    source = object({<br>      base_image  = optional(string, "cgr.dev/chainguard/static:latest-glibc")<br>      working_dir = string<br>      importpath  = string<br>    })<br>    args = optional(list(string), [])<br>    ports = optional(list(object({<br>      name           = optional(string, "http1")<br>      container_port = number<br>    })), [])<br>    resources = optional(<br>      object(<br>        {<br>          limits = optional(object(<br>            {<br>              cpu    = string<br>              memory = string<br>            }<br>          ), null)<br>          cpu_idle = optional(bool, true)<br>        }<br>      ),<br>      {<br>        cpu_idle = true<br>      }<br>    )<br>    env = optional(list(object({<br>      name  = string<br>      value = optional(string)<br>      value_source = optional(object({<br>        secret_key_ref = object({<br>          secret  = string<br>          version = string<br>        })<br>      }), null)<br>    })), [])<br>    regional-env = optional(list(object({<br>      name  = string<br>      value = map(string)<br>    })), [])<br>    volume_mounts = optional(list(object({<br>      name       = string<br>      mount_path = string<br>    })), [])<br>  }))</pre> | n/a | yes |
 | <a name="input_egress"></a> [egress](#input\_egress) | The egress mode for the service.  Must be one of ALL\_TRAFFIC, or PRIVATE\_RANGES\_ONLY. Egress traffic is routed through the regional VPC network from var.regions. | `string` | `"ALL_TRAFFIC"` | no |
 | <a name="input_ingress"></a> [ingress](#input\_ingress) | The ingress mode for the service.  Must be one of INGRESS\_TRAFFIC\_ALL, INGRESS\_TRAFFIC\_INTERNAL\_LOAD\_BALANCER, or INGRESS\_TRAFFIC\_INTERNAL\_ONLY. | `string` | `"INGRESS_TRAFFIC_INTERNAL_ONLY"` | no |
 | <a name="input_name"></a> [name](#input\_name) | n/a | `string` | n/a | yes |

modules/regional-go-service/main.tf

@@ -74,7 +74,8 @@ resource "google_cloud_run_v2_service" "this" {
         dynamic "resources" {
           for_each = containers.value.resources != null ? { "" : containers.value.resources } : {}
           content {
-            limits = resources.value.limits
+            limits   = resources.value.limits
+            cpu_idle = resources.value.cpu_idle
           }
         }
 

modules/regional-go-service/variables.tf

@@ -44,12 +44,22 @@ variable "containers" {
       name           = optional(string, "http1")
       container_port = number
     })), [])
-    resources = optional(object({
-      limits = object({
-        cpu    = string
-        memory = string
-      })
-    }), null)
+    resources = optional(
+      object(
+        {
+          limits = optional(object(
+            {
+              cpu    = string
+              memory = string
+            }
+          ), null)
+          cpu_idle = optional(bool, true)
+        }
+      ),
+      {
+        cpu_idle = true
+      }
+    )
     env = optional(list(object({
       name  = string
       value = optional(string)