add cloudwatch ok alarm actions (#32)

* add cloudwatch ok alarm actions

* updating readme from makefile

Author: veilig2000

README.md

@@ -98,7 +98,6 @@ Available targets:
   lint                                Lint terraform code
 
 ```
-
 ## Inputs
 
 | Name | Description | Type | Default | Required |
@@ -122,6 +121,7 @@ Available targets:
 | name | Name | string | `redis` | no |
 | namespace | Namespace | string | `global` | no |
 | notification_topic_arn | Notification topic arn | string | `` | no |
+| ok_actions | The list of actions to execute when this alarm transitions into an OK state from any other state. Each action is specified as an Amazon Resource Number (ARN) | list | `<list>` | no |
 | parameter | A list of Redis parameters to apply. Note that parameters may differ from one Redis family to another | list | `<list>` | no |
 | port | Redis port | string | `6379` | no |
 | replication_group_id | Replication group ID with the following constraints:  A name must contain from 1 to 20 alphanumeric characters or hyphens.   The first character must be a letter.   A name cannot end with a hyphen or contain two consecutive hyphens. | string | `` | no |

docs/terraform.md

@@ -1,4 +1,3 @@
-
 ## Inputs
 
 | Name | Description | Type | Default | Required |
@@ -22,6 +21,7 @@
 | name | Name | string | `redis` | no |
 | namespace | Namespace | string | `global` | no |
 | notification_topic_arn | Notification topic arn | string | `` | no |
+| ok_actions | The list of actions to execute when this alarm transitions into an OK state from any other state. Each action is specified as an Amazon Resource Number (ARN) | list | `<list>` | no |
 | parameter | A list of Redis parameters to apply. Note that parameters may differ from one Redis family to another | list | `<list>` | no |
 | port | Redis port | string | `6379` | no |
 | replication_group_id | Replication group ID with the following constraints:  A name must contain from 1 to 20 alphanumeric characters or hyphens.   The first character must be a letter.   A name cannot end with a hyphen or contain two consecutive hyphens. | string | `` | no |

main.tf

@@ -92,6 +92,7 @@ resource "aws_cloudwatch_metric_alarm" "cache_cpu" {
   }
 
   alarm_actions = ["${var.alarm_actions}"]
+  ok_actions    = ["${var.ok_actions}"]
   depends_on    = ["aws_elasticache_replication_group.default"]
 }
 
@@ -113,6 +114,7 @@ resource "aws_cloudwatch_metric_alarm" "cache_memory" {
   }
 
   alarm_actions = ["${var.alarm_actions}"]
+  ok_actions    = ["${var.ok_actions}"]
   depends_on    = ["aws_elasticache_replication_group.default"]
 }
 

variables.tf

@@ -103,6 +103,12 @@ variable "alarm_actions" {
   default     = []
 }
 
+variable "ok_actions" {
+  type        = "list"
+  description = "The list of actions to execute when this alarm transitions into an OK state from any other state. Each action is specified as an Amazon Resource Number (ARN)"
+  default     = []
+}
+
 variable "apply_immediately" {
   default     = "true"
   description = "Apply changes immediately"