feat: Adds replacement_method key to update_policy input to support Stateful MIG (#189)

BREAKING CHANGE: `update_policy` must now include `replacement_method`.

Author: 210rain

autogen/main.tf.tmpl

@@ -101,6 +101,7 @@ resource "google_compute_region_instance_group_manager" "{{ module_name }}" {
       max_unavailable_fixed        = lookup(update_policy.value, "max_unavailable_fixed", null)
       max_unavailable_percent      = lookup(update_policy.value, "max_unavailable_percent", null)
       min_ready_sec                = lookup(update_policy.value, "min_ready_sec", null)
+      replacement_method           = lookup(update_policy.value, "replacement_method", null)
       minimal_action               = update_policy.value.minimal_action
       type                         = update_policy.value.type
     }

autogen/variables.tf.tmpl

@@ -98,6 +98,7 @@ variable "update_policy" {
     max_unavailable_fixed        = number
     max_unavailable_percent      = number
     min_ready_sec                = number
+    replacement_method           = string
     minimal_action               = string
     type                         = string
   }))

examples/mig/full/variables.tf

@@ -193,6 +193,7 @@ variable "update_policy" {
     max_unavailable_fixed        = number
     max_unavailable_percent      = number
     min_ready_sec                = number
+    replacement_method           = string
     minimal_action               = string
     type                         = string
   }))

modules/mig/README.md

@@ -43,7 +43,7 @@ The current version is 2.X. The following guides are available to assist with up
 | subnetwork\_project | The project that subnetwork belongs to | `string` | `""` | no |
 | target\_pools | The target load balancing pools to assign this group to. | `list(string)` | `[]` | no |
 | target\_size | The target number of running instances for this managed instance group. This value should always be explicitly set unless this resource is attached to an autoscaler, in which case it should never be set. | `number` | `1` | no |
-| update\_policy | The rolling update policy. https://www.terraform.io/docs/providers/google/r/compute_region_instance_group_manager.html#rolling_update_policy | <pre>list(object({<br>    max_surge_fixed              = number<br>    instance_redistribution_type = string<br>    max_surge_percent            = number<br>    max_unavailable_fixed        = number<br>    max_unavailable_percent      = number<br>    min_ready_sec                = number<br>    minimal_action               = string<br>    type                         = string<br>  }))</pre> | `[]` | no |
+| update\_policy | The rolling update policy. https://www.terraform.io/docs/providers/google/r/compute_region_instance_group_manager.html#rolling_update_policy | <pre>list(object({<br>    max_surge_fixed              = number<br>    instance_redistribution_type = string<br>    max_surge_percent            = number<br>    max_unavailable_fixed        = number<br>    max_unavailable_percent      = number<br>    min_ready_sec                = number<br>    replacement_method           = string<br>    minimal_action               = string<br>    type                         = string<br>  }))</pre> | `[]` | no |
 | wait\_for\_instances | Whether to wait for all instances to be created/updated before returning. Note that if this is set to true and the operation does not succeed, Terraform will continue trying until it times out. | `string` | `"false"` | no |
 
 ## Outputs

modules/mig/main.tf

@@ -85,6 +85,7 @@ resource "google_compute_region_instance_group_manager" "mig" {
       max_unavailable_fixed        = lookup(update_policy.value, "max_unavailable_fixed", null)
       max_unavailable_percent      = lookup(update_policy.value, "max_unavailable_percent", null)
       min_ready_sec                = lookup(update_policy.value, "min_ready_sec", null)
+      replacement_method           = lookup(update_policy.value, "replacement_method", null)
       minimal_action               = update_policy.value.minimal_action
       type                         = update_policy.value.type
     }

modules/mig/variables.tf

@@ -83,6 +83,7 @@ variable "update_policy" {
     max_unavailable_fixed        = number
     max_unavailable_percent      = number
     min_ready_sec                = number
+    replacement_method           = string
     minimal_action               = string
     type                         = string
   }))

modules/mig_with_percent/README.md

@@ -44,7 +44,7 @@ The current version is 2.X. The following guides are available to assist with up
 | subnetwork\_project | The project that subnetwork belongs to | `string` | `""` | no |
 | target\_pools | The target load balancing pools to assign this group to. | `list(string)` | `[]` | no |
 | target\_size | The target number of running instances for this managed instance group. This value should always be explicitly set unless this resource is attached to an autoscaler, in which case it should never be set. | `number` | `1` | no |
-| update\_policy | The rolling update policy. https://www.terraform.io/docs/providers/google/r/compute_region_instance_group_manager.html#rolling_update_policy | <pre>list(object({<br>    max_surge_fixed              = number<br>    instance_redistribution_type = string<br>    max_surge_percent            = number<br>    max_unavailable_fixed        = number<br>    max_unavailable_percent      = number<br>    min_ready_sec                = number<br>    minimal_action               = string<br>    type                         = string<br>  }))</pre> | `[]` | no |
+| update\_policy | The rolling update policy. https://www.terraform.io/docs/providers/google/r/compute_region_instance_group_manager.html#rolling_update_policy | <pre>list(object({<br>    max_surge_fixed              = number<br>    instance_redistribution_type = string<br>    max_surge_percent            = number<br>    max_unavailable_fixed        = number<br>    max_unavailable_percent      = number<br>    min_ready_sec                = number<br>    replacement_method           = string<br>    minimal_action               = string<br>    type                         = string<br>  }))</pre> | `[]` | no |
 | wait\_for\_instances | Whether to wait for all instances to be created/updated before returning. Note that if this is set to true and the operation does not succeed, Terraform will continue trying until it times out. | `string` | `"false"` | no |
 
 ## Outputs

modules/mig_with_percent/main.tf

@@ -94,6 +94,7 @@ resource "google_compute_region_instance_group_manager" "mig_with_percent" {
       max_unavailable_fixed        = lookup(update_policy.value, "max_unavailable_fixed", null)
       max_unavailable_percent      = lookup(update_policy.value, "max_unavailable_percent", null)
       min_ready_sec                = lookup(update_policy.value, "min_ready_sec", null)
+      replacement_method           = lookup(update_policy.value, "replacement_method", null)
       minimal_action               = update_policy.value.minimal_action
       type                         = update_policy.value.type
     }

modules/mig_with_percent/variables.tf

@@ -91,6 +91,7 @@ variable "update_policy" {
     max_unavailable_fixed        = number
     max_unavailable_percent      = number
     min_ready_sec                = number
+    replacement_method           = string
     minimal_action               = string
     type                         = string
   }))