Terraform upgrade 0.12

main.tf

@@ -93,13 +93,13 @@ data "aws_iam_policy_document" "trust" {
 
 resource "aws_iam_role_policy" "main" {
   name   = "lambda_ebs_snapshots"
-  role   = "${aws_iam_role.main.id}"
-  policy = "${data.aws_iam_policy_document.policy.json}"
+  role   = aws_iam_role.main.id
+  policy = data.aws_iam_policy_document.policy.json
 }
 
 resource "aws_iam_role" "main" {
   name               = "lambda_ebs_snapshots"
-  assume_role_policy = "${data.aws_iam_policy_document.trust.json}"
+  assume_role_policy = data.aws_iam_policy_document.trust.json
 }
 
 #############################################################################################################
@@ -108,19 +108,19 @@ resource "aws_iam_role" "main" {
 resource "aws_lambda_function" "main" {
   filename         = "${path.module}/lambda_ebs_snapshots.zip"
   function_name    = "lambda_ebs_snapshots"
-  role             = "${aws_iam_role.main.arn}"
+  role             = aws_iam_role.main.arn
   handler          = "lambda_ebs_snapshots.lambda_handler"
   timeout          = "300"
   runtime          = "python2.7"
-  source_code_hash = "${base64sha256(file("${path.module}/lambda_ebs_snapshots.zip"))}"
+  source_code_hash = filebase64sha256("${path.module}/lambda_ebs_snapshots.zip")
 
   environment {
     variables = {
-      MIN_RETENTION_COUNT    = "${var.min_retention_count}"
-      DEFAULT_RETENTION_DAYS = "${var.default_retention_days}"
-      SNAPSHOT_TAG           = "${var.snapshot_tag}"
-      RETENTION_TAG          = "${var.retention_tag}"
-      DELETE_TAG             = "${var.delete_tag}"
+      MIN_RETENTION_COUNT    = var.min_retention_count
+      DEFAULT_RETENTION_DAYS = var.default_retention_days
+      SNAPSHOT_TAG           = var.snapshot_tag
+      RETENTION_TAG          = var.retention_tag
+      DELETE_TAG             = var.delete_tag
     }
   }
 }
@@ -128,9 +128,9 @@ resource "aws_lambda_function" "main" {
 resource "aws_lambda_permission" "main" {
   statement_id  = "AllowExecutionFromCloudWatch"
   action        = "lambda:InvokeFunction"
-  function_name = "${aws_lambda_function.main.arn}"
+  function_name = aws_lambda_function.main.arn
   principal     = "events.amazonaws.com"
-  source_arn    = "${aws_cloudwatch_event_rule.main.arn}"
+  source_arn    = aws_cloudwatch_event_rule.main.arn
 }
 
 #############################################################################################################
@@ -139,11 +139,12 @@ resource "aws_lambda_permission" "main" {
 resource "aws_cloudwatch_event_rule" "main" {
   name                = "lambda_ebs_snapshots_nightly"
   description         = "Run EBS snapshot function each morning"
-  schedule_expression = "${var.cloudwatch_schedule}"
+  schedule_expression = var.cloudwatch_schedule
 }
 
 resource "aws_cloudwatch_event_target" "main" {
-  rule      = "${aws_cloudwatch_event_rule.main.name}"
-  arn       = "${aws_lambda_function.main.arn}"
-  target_id = "${aws_lambda_function.main.function_name}"
+  rule      = aws_cloudwatch_event_rule.main.name
+  arn       = aws_lambda_function.main.arn
+  target_id = aws_lambda_function.main.function_name
 }
+