Support Redis Parameters (#24)

* Paramatrise redis

* Update label version

* Update label version

* Update example

* Fix example

Signed-off-by: Igor Rodionov <goruha@gmail.com>

* Update variables.tf

* Update terraform.md

* Update README.md

Author: goruha

README.md

@@ -107,6 +107,7 @@ Available targets:
 | name | Name | string | `redis` | no |
 | namespace | Namespace | string | `global` | no |
 | notification_topic_arn | Notification topic arn | string | `` | 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 |
 | security_groups | AWS security group ids | list | `<list>` | no |
 | stage | Stage | string | `default` | no |

docs/terraform.md

@@ -22,6 +22,7 @@
 | name | Name | string | `redis` | no |
 | namespace | Namespace | string | `global` | no |
 | notification_topic_arn | Notification topic arn | string | `` | 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 |
 | security_groups | AWS security group ids | list | `<list>` | no |
 | stage | Stage | string | `default` | no |

examples/simple/main.tf

@@ -66,4 +66,11 @@ module "redis" {
   alarm_cpu_threshold_percent  = "75"
   alarm_memory_threshold_bytes = "10000000"
   at_rest_encryption_enabled   = "true"
+
+  parameter = [
+    {
+      name  = "notify-keyspace-events"
+      value = "lK"
+    },
+  ]
 }

main.tf

@@ -1,6 +1,6 @@
 # Define composite variables for resources
 module "label" {
-  source     = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.3.3"
+  source     = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.5.3"
   enabled    = "${var.enabled}"
   namespace  = "${var.namespace}"
   name       = "${var.name}"
@@ -42,9 +42,10 @@ resource "aws_elasticache_subnet_group" "default" {
 }
 
 resource "aws_elasticache_parameter_group" "default" {
-  count  = "${var.enabled == "true" ? 1 : 0}"
-  name   = "${module.label.id}"
-  family = "${var.family}"
+  count     = "${var.enabled == "true" ? 1 : 0}"
+  name      = "${module.label.id}"
+  family    = "${var.family}"
+  parameter = "${var.parameter}"
 }
 
 resource "aws_elasticache_replication_group" "default" {

variables.tf

@@ -60,6 +60,12 @@ variable "family" {
   description = "Redis family "
 }
 
+variable "parameter" {
+  type        = "list"
+  default     = []
+  description = "A list of Redis parameters to apply. Note that parameters may differ from one Redis family to another"
+}
+
 variable "engine_version" {
   default     = "4.0.10"
   description = "Redis engine version"