add additional outputs

main.tf

@@ -66,6 +66,12 @@ resource "aws_cloudwatch_log_group" "sns_logged_item_group" {
   retention_in_days = "${var.log_group_retention_days}"
 }
 
+# retrieve metadata for log group if no created, so arn can be included in outputs
+data "aws_cloudwatch_log_group" "sns_logged_item_group" {
+  count = "${var.create_log_group ? 0 : 1}"
+  name  = "${var.log_group_name}"
+}
+
 # -------------------------------------------------------------------------------------------------------------
 # CLOUDWATCH LOG STREAM IF create_log_stream == true
 #   stream created in log_group specified or created

outputs.tf

@@ -2,12 +2,12 @@
 # AWS SNS TO CLOUDWATCH LOGS LAMBDA GATEWAY - OUTPUTS
 # -------------------------------------------------------------------------------------------------------------
 
-output "lambda_func_name" {
+output "lambda_name" {
   description = "Name assigned to the Lambda Function."
   value       = "${var.lambda_func_name}"
 }
 
-output "lambda_func_arn" {
+output "lambda_arn" {
   description = "ARN of created Lambda Function."
   value       = "${aws_lambda_function.sns_cloudwatchlog.arn}"
 }
@@ -17,12 +17,12 @@ output "lambda_endpoint" {
   value       = "${var.lambda_publish_func ? aws_lambda_function.sns_cloudwatchlog.qualified_arn  : aws_lambda_function.sns_cloudwatchlog.arn}"
 }
 
-output "iam_role_id_lambda" {
+output "lambda_iam_role_id" {
   description = "Lambda IAM Role ID."
   value       = "${aws_iam_role.lambda_cloudwatch_logs.id}"
 }
 
-output "iam_role_arn_lambda" {
+output "lambda_iam_role_arn" {
   description = "Lambda IAM Role ARN."
   value       = "${aws_iam_role.lambda_cloudwatch_logs.arn}"
 }
@@ -42,11 +42,21 @@ output "log_group_name" {
   value       = "${var.log_group_name}"
 }
 
+output "log_group_arn" {
+  description = "ARN of CloudWatch Log Group."
+  value       = "${var.create_log_group ? join("", aws_cloudwatch_log_group.sns_logged_item_group.*.arn) : join("", data.aws_cloudwatch_log_group.sns_logged_item_group.*.arn)}"
+}
+
 output "log_stream_name" {
   description = "Name of CloudWatch Log Stream."
   value       = "${var.log_stream_name}"
 }
 
+output "log_stream_arn" {
+  description = "Name of CloudWatch Log Stream."
+  value       = "${var.create_sns_topic ? join("", aws_sns_topic.sns_log_topic.*.arn) : join("", data.aws_sns_topic.sns_log_topic.*.arn)}"
+}
+
 output "cloudwatch_event_rule_arn" {
   description = "ARN of CloudWatch Trigger Event created to prevent hibernation."
   value       = "${join("", aws_cloudwatch_event_rule.warmer.*.arn)}"