feat: add instance refresh preferences (#115)

README.md

@@ -206,7 +206,7 @@ Available targets:
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.9 |
 
 ## Providers
@@ -272,7 +272,7 @@ Available targets:
 | <a name="input_image_id"></a> [image\_id](#input\_image\_id) | The EC2 image ID to launch | `string` | `""` | no |
 | <a name="input_instance_initiated_shutdown_behavior"></a> [instance\_initiated\_shutdown\_behavior](#input\_instance\_initiated\_shutdown\_behavior) | Shutdown behavior for the instances. Can be `stop` or `terminate` | `string` | `"terminate"` | no |
 | <a name="input_instance_market_options"></a> [instance\_market\_options](#input\_instance\_market\_options) | The market (purchasing) option for the instances | <pre>object({<br>    market_type = string<br>    spot_options = optional(object({<br>      block_duration_minutes         = optional(number)<br>      instance_interruption_behavior = optional(string)<br>      max_price                      = optional(number)<br>      spot_instance_type             = optional(string)<br>      valid_until                    = optional(string)<br>    }))<br>  })</pre> | `null` | no |
-| <a name="input_instance_refresh"></a> [instance\_refresh](#input\_instance\_refresh) | The instance refresh definition | <pre>object({<br>    strategy = string<br>    preferences = object({<br>      instance_warmup        = number<br>      min_healthy_percentage = number<br>    })<br>    triggers = list(string)<br>  })</pre> | `null` | no |
+| <a name="input_instance_refresh"></a> [instance\_refresh](#input\_instance\_refresh) | The instance refresh definition | <pre>object({<br>    strategy = string<br>    preferences = optional(object({<br>      instance_warmup        = optional(number, null)<br>      min_healthy_percentage = optional(number, null)<br>      skip_matching          = optional(bool, null)<br>      auto_rollback          = optional(bool, null)<br>    }), null)<br>    triggers = optional(list(string), [])<br>  })</pre> | `null` | no |
 | <a name="input_instance_reuse_policy"></a> [instance\_reuse\_policy](#input\_instance\_reuse\_policy) | If warm pool and this block are configured, instances in the Auto Scaling group can be returned to the warm pool on scale in. The default is to terminate instances in the Auto Scaling group when the group scales in. | <pre>object({<br>    reuse_on_scale_in = bool<br>  })</pre> | `null` | no |
 | <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | Instance type to launch | `string` | n/a | yes |
 | <a name="input_key_name"></a> [key\_name](#input\_key\_name) | The SSH key name that should be used for the instance | `string` | `""` | no |

docs/terraform.md

@@ -3,7 +3,7 @@
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.9 |
 
 ## Providers
@@ -69,7 +69,7 @@
 | <a name="input_image_id"></a> [image\_id](#input\_image\_id) | The EC2 image ID to launch | `string` | `""` | no |
 | <a name="input_instance_initiated_shutdown_behavior"></a> [instance\_initiated\_shutdown\_behavior](#input\_instance\_initiated\_shutdown\_behavior) | Shutdown behavior for the instances. Can be `stop` or `terminate` | `string` | `"terminate"` | no |
 | <a name="input_instance_market_options"></a> [instance\_market\_options](#input\_instance\_market\_options) | The market (purchasing) option for the instances | <pre>object({<br>    market_type = string<br>    spot_options = optional(object({<br>      block_duration_minutes         = optional(number)<br>      instance_interruption_behavior = optional(string)<br>      max_price                      = optional(number)<br>      spot_instance_type             = optional(string)<br>      valid_until                    = optional(string)<br>    }))<br>  })</pre> | `null` | no |
-| <a name="input_instance_refresh"></a> [instance\_refresh](#input\_instance\_refresh) | The instance refresh definition | <pre>object({<br>    strategy = string<br>    preferences = object({<br>      instance_warmup        = number<br>      min_healthy_percentage = number<br>    })<br>    triggers = list(string)<br>  })</pre> | `null` | no |
+| <a name="input_instance_refresh"></a> [instance\_refresh](#input\_instance\_refresh) | The instance refresh definition | <pre>object({<br>    strategy = string<br>    preferences = optional(object({<br>      instance_warmup        = optional(number, null)<br>      min_healthy_percentage = optional(number, null)<br>      skip_matching          = optional(bool, null)<br>      auto_rollback          = optional(bool, null)<br>    }), null)<br>    triggers = optional(list(string), [])<br>  })</pre> | `null` | no |
 | <a name="input_instance_reuse_policy"></a> [instance\_reuse\_policy](#input\_instance\_reuse\_policy) | If warm pool and this block are configured, instances in the Auto Scaling group can be returned to the warm pool on scale in. The default is to terminate instances in the Auto Scaling group when the group scales in. | <pre>object({<br>    reuse_on_scale_in = bool<br>  })</pre> | `null` | no |
 | <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | Instance type to launch | `string` | n/a | yes |
 | <a name="input_key_name"></a> [key\_name](#input\_key\_name) | The SSH key name that should be used for the instance | `string` | `""` | no |

main.tf

@@ -178,10 +178,12 @@ resource "aws_autoscaling_group" "default" {
     content {
       strategy = instance_refresh.value.strategy
       dynamic "preferences" {
-        for_each = (length(instance_refresh.value.preferences) > 0 ? [instance_refresh.value.preferences] : [])
+        for_each = instance_refresh.value.preferences != null ? [instance_refresh.value.preferences] : []
         content {
           instance_warmup        = lookup(preferences.value, "instance_warmup", null)
           min_healthy_percentage = lookup(preferences.value, "min_healthy_percentage", null)
+          skip_matching          = lookup(preferences.value, "skip_matching", null)
+          auto_rollback          = lookup(preferences.value, "auto_rollback", null)
         }
       }
       triggers = instance_refresh.value.triggers

variables.tf

@@ -111,11 +111,13 @@ variable "instance_refresh" {
   description = "The instance refresh definition"
   type = object({
     strategy = string
-    preferences = object({
-      instance_warmup        = number
-      min_healthy_percentage = number
-    })
-    triggers = list(string)
+    preferences = optional(object({
+      instance_warmup        = optional(number, null)
+      min_healthy_percentage = optional(number, null)
+      skip_matching          = optional(bool, null)
+      auto_rollback          = optional(bool, null)
+    }), null)
+    triggers = optional(list(string), [])
   })
 
   default = null

versions.tf

@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 1.0"
+  required_version = ">= 1.3"
 
   required_providers {
     aws = {