Added the possibility of putting the placement_constraints and ordere…

…d_placement_strategy (#4)

* Added to the possibility of putting the placement_constraints and placement_constraints
* Changed variable placement_constraints to list(object)
* Changed variable ordered_placement_strategy to list(object)

README.md

@@ -62,6 +62,8 @@ In addition you have the option to create or not :
 | log\_subscription\_filter\_role\_arn | Role to use for log subscription filter (required when log\_subscription\_filter\_enabled=true) | `string` | `""` | no |
 | memory | Hard memory of the container | `string` | `"512"` | no |
 | name | Name of your ECS service | `any` | n/a | yes |
+| ordered\_placement\_strategy | Service level strategy rules that are taken into consideration during task placement. List from top to bottom in order of precedence. The maximum number of ordered\_placement\_strategy blocks is 5. | <pre>list(object({<br>    field      = string<br>    expression = string<br>  }))</pre> | `[]` | no |
+| placement\_constraints | Rules that are taken into consideration during task placement. Maximum number of placement\_constraints is 10. | <pre>list(object({<br>    type       = string<br>    expression = string<br>  }))</pre> | `[]` | no |
 | service\_role\_arn | Existing service role ARN created by ECS cluster module | `any` | n/a | yes |
 | task\_role\_arn | Existing task role ARN created by ECS cluster module | `any` | n/a | yes |
 | vpc\_id | VPC ID to deploy this app to | `any` | n/a | yes |

_variables.tf

@@ -76,3 +76,23 @@ variable "log_subscription_filter_filter_pattern" {
   type        = string
   description = "Filter pattern for log subscription filter"
 }
+
+variable "ordered_placement_strategy" {
+  # This variable may not be used with Fargate!
+  description = "Service level strategy rules that are taken into consideration during task placement. List from top to bottom in order of precedence. The maximum number of ordered_placement_strategy blocks is 5."
+  type = list(object({
+    field      = string
+    expression = string
+  }))
+  default = []
+}
+
+variable "placement_constraints" {
+  # This variables may not be used with Fargate!
+  description = "Rules that are taken into consideration during task placement. Maximum number of placement_constraints is 10."
+  type = list(object({
+    type       = string
+    expression = string
+  }))
+  default = []
+}

ecs-service.tf

@@ -8,6 +8,21 @@ resource "aws_ecs_service" "default" {
   deployment_maximum_percent         = 100
   deployment_minimum_healthy_percent = 0
 
+  dynamic "placement_constraints" {
+    for_each = var.placement_constraints
+    content {
+      expression = lookup(placement_constraints.value, "expression", null)
+      type       = placement_constraints.value.type
+    }
+  }
+
+  dynamic "ordered_placement_strategy" {
+    for_each = var.ordered_placement_strategy
+    content {
+      field = lookup(ordered_placement_strategy.value, "field", null)
+      type  = ordered_placement_strategy.value.type
+    }
+  }
   lifecycle {
     ignore_changes = [task_definition]
   }