Update code after edit pass

Author: brikis98

code/opa/09-testing-terraform-code/README.md

@@ -1,13 +1,14 @@
 # OPA example
 
 This folder contains example [Open Policy Agent (OPA)](https://www.openpolicyagent.org/) policy that enforces all 
-module source URLs come from the `brikis98` GitHub org.
+resources include a specific tag.
 
 For more info, please see Chapter 9, "How to test Terraform code", of
 *[Terraform: Up and Running](http://www.terraformupandrunning.com)*.
 
 ## Quick start
 
-The best way to run this test is with Terratest. See 
-[opa_test.go](../../terraform/09-testing-terraform-code/test/opa_test.go).
+Please see the README in the companion Terraform module at 
+[09-testing-terraform-code/examples/opa](../../terraform/09-testing-terraform-code/examples/opa) for instructions on 
+how to use this policy to test that module.
 

code/opa/09-testing-terraform-code/enforce_source.rego

@@ -0,0 +1,6 @@
+package tuar
+
+allow {
+   resource_change := input.resource_changes[_]
+   resource_change.change.after.tags["ManagedBy"]
+}

code/opa/09-testing-terraform-code/enforce_tagging.rego

@@ -1,6 +1,6 @@
 {
   "builders": [{
-    "ami_name": "packer-example",
+    "ami_name": "packer-example-{{isotime | clean_resource_name}}",
     "instance_type": "t2.micro",
     "region": "us-east-2",
     "type": "amazon-ebs",
@@ -16,6 +16,7 @@
     ],
     "environment_vars": [
       "DEBIAN_FRONTEND=noninteractive"
-    ]
+    ],
+    "pause_before": "60s"
   }]
 }

code/packer/01-why-terraform/webserver.json

@@ -1,6 +1,7 @@
+# Define the function in one place
 def example_function()
   puts "Hello, World"
 end
 
-# Other places in your code
+# Use the function in multiple other places
 example_function()

code/ruby/04-terraform-modules/function-example.rb

@@ -1,6 +1,7 @@
+# A function that returns a value
 def example_function(param1, param2)
   return "Hello, #{param1} #{param2}"
 end
 
-# Other places in your code
+# Call the function and get the return value
 return_value = example_function("foo", "bar")

code/ruby/04-terraform-modules/function-with-input-and-output-params-example.rb

@@ -1,6 +1,7 @@
+# A function with two input parameters
 def example_function(param1, param2)
   puts "Hello, #{param1} #{param2}"
 end
 
-# Other places in your code
+# Pass two input parameters to the function
 example_function("foo", "bar")

code/ruby/04-terraform-modules/function-with-input-params-example.rb

@@ -25,7 +25,6 @@ resource "aws_launch_configuration" "example" {
               EOF
 
   # Required when using a launch configuration with an auto scaling group.
-  # https://www.terraform.io/docs/providers/aws/r/launch_configuration.html
   lifecycle {
     create_before_destroy = true
   }

code/terraform/02-intro-to-terraform-syntax/webserver-cluster/main.tf

@@ -23,7 +23,7 @@ resource "aws_s3_bucket" "terraform_state" {
 
 }
 
-# Enable versioning so you can see the full revision history of our
+# Enable versioning so you can see the full revision history of your
 # state files
 resource "aws_s3_bucket_versioning" "enabled" {
   bucket = aws_s3_bucket.terraform_state.id
@@ -38,7 +38,7 @@ resource "aws_s3_bucket_server_side_encryption_configuration" "default" {
 
   rule {
     apply_server_side_encryption_by_default {
-      sse_algorithm     = "AES256"
+      sse_algorithm = "AES256"
     }
   }
 }

code/terraform/03-terraform-state/file-layout-example/global/s3/main.tf

@@ -31,9 +31,9 @@ resource "aws_db_instance" "example" {
   engine              = "mysql"
   allocated_storage   = 10
   instance_class      = "db.t2.micro"
+  skip_final_snapshot = true
 
   db_name             = var.db_name
-  skip_final_snapshot = true
 
   username = var.db_username
   password = var.db_password