Terraform 0.12 (#20)

* Terraform 0.12

demo-2/instance.tf

@@ -1,26 +1,28 @@
 resource "aws_key_pair" "mykey" {
-  key_name = "mykey"
-  public_key = "${file("${var.PATH_TO_PUBLIC_KEY}")}"
+  key_name   = "mykey"
+  public_key = file(var.PATH_TO_PUBLIC_KEY)
 }
 
 resource "aws_instance" "example" {
-  ami = "${lookup(var.AMIS, var.AWS_REGION)}"
+  ami           = var.AMIS[var.AWS_REGION]
   instance_type = "t2.micro"
-  key_name = "${aws_key_pair.mykey.key_name}"
+  key_name      = aws_key_pair.mykey.key_name
 
   provisioner "file" {
-    source = "script.sh"
+    source      = "script.sh"
     destination = "/tmp/script.sh"
   }
   provisioner "remote-exec" {
     inline = [
       "chmod +x /tmp/script.sh",
-      "sudo /tmp/script.sh"
+      "sudo /tmp/script.sh",
     ]
   }
   connection {
-    host = "${self.public_ip}"
-    user = "${var.INSTANCE_USERNAME}"
-    private_key = "${file("${var.PATH_TO_PRIVATE_KEY}")}"
+    host        = coalesce(self.public_ip, self.private_ip)
+    type        = "ssh"
+    user        = var.INSTANCE_USERNAME
+    private_key = file(var.PATH_TO_PRIVATE_KEY)
   }
 }
+

demo-2/provider.tf

@@ -1,6 +1,6 @@
 provider "aws" {
-    access_key = "${var.AWS_ACCESS_KEY}"
-    secret_key = "${var.AWS_SECRET_KEY}"
-    region = "${var.AWS_REGION}"
+  access_key = var.AWS_ACCESS_KEY
+  secret_key = var.AWS_SECRET_KEY
+  region     = var.AWS_REGION
 }
 

demo-2/vars.tf

@@ -1,10 +1,15 @@
-variable "AWS_ACCESS_KEY" {}
-variable "AWS_SECRET_KEY" {}
+variable "AWS_ACCESS_KEY" {
+}
+
+variable "AWS_SECRET_KEY" {
+}
+
 variable "AWS_REGION" {
   default = "eu-west-1"
 }
+
 variable "AMIS" {
-  type = "map"
+  type = map(string)
   default = {
     us-east-1 = "ami-13be557e"
     us-west-2 = "ami-06b94666"
@@ -15,9 +20,12 @@ variable "AMIS" {
 variable "PATH_TO_PRIVATE_KEY" {
   default = "mykey"
 }
+
 variable "PATH_TO_PUBLIC_KEY" {
   default = "mykey.pub"
 }
+
 variable "INSTANCE_USERNAME" {
   default = "ubuntu"
 }
+

demo-2/versions.tf

@@ -0,0 +1,4 @@
+
+terraform {
+  required_version = ">= 0.12"
+}