allow setting memory of lambda

Author: airdavidkarlsson

main.tf

@@ -78,6 +78,7 @@ module "lambda" {
   handler       = "${var.lambda_handler}"
   runtime       = "${var.lambda_runtime}"
   role          = "${aws_iam_role.lambda_role.arn}"
+  memory        = "${var.lambda_memory}"
   database_uri  = "<UPDATE_ME>"
 
   # database_uri  = "${module.rds_instance.url}"

modules/lambda/main.tf

@@ -6,6 +6,7 @@ resource "aws_lambda_function" "lambda" {
   handler          = "${var.handler}"
   runtime          = "${var.runtime}"
   source_code_hash = "${var.hash}"
+  memory_size      = "${var.memory}"
 
   vpc_config {
     subnet_ids         = ["${var.subnet_ids}"]

modules/lambda/variables.tf

@@ -22,6 +22,10 @@ variable "handler" {
   description = "The handler name of the lambda function"
 }
 
+variable "memory" {
+  description = "The memory size of the lambda function"
+}
+
 variable "role" {
   description = "IAM role attached to the Lambda Function (ARN)"
 }

variables.tf

@@ -68,6 +68,11 @@ variable "lambda_handler" {
   description = "Lambda Function Handler"
 }
 
+variable "lambda_memory" {
+  description = "Lambda memory size, 128 MB to 3,008 MB, in 64 MB increments"
+  default = "128"
+}
+
 ####################
 # API Gateway
 ####################