Automated setup

Author: sneb-senacor

terraform/apiGateway.tf

@@ -13,28 +13,6 @@ resource "aws_api_gateway_rest_api" "helloWorldGateway" {
 
 }
 
-resource "aws_api_gateway_resource" "helloWorld" {
-  rest_api_id     = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
-  parent_id       = "${aws_api_gateway_rest_api.helloWorldGateway.root_resource_id}"
-  path_part       = "hello"
-}
-
-resource "aws_api_gateway_method" "helloWorldGet" {
-  rest_api_id     = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
-  resource_id     = "${aws_api_gateway_resource.helloWorld.id}"
-  http_method     = "GET"
-  authorization   = "NONE"
-}
-
-resource "aws_api_gateway_integration" "helloWorldGet" {
-  rest_api_id                 = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
-  resource_id                 = "${aws_api_gateway_resource.helloWorld.id}"
-  http_method                 = "${aws_api_gateway_method.helloWorldGet.http_method}"
-  integration_http_method     = "POST"
-  type                        = "AWS_PROXY"
-  uri                         = "${aws_lambda_function.schibbler_helloWorldLambda.invoke_arn}"
-}
-
 output "Gateway_URL" {
   value = "${aws_api_gateway_deployment.helloWorldGateway.invoke_url}"
 }

terraform/get_hello.tf

@@ -0,0 +1,68 @@
+data "archive_file" "helloWorldLambdaZip" {
+  type              = "zip"
+  source_dir        = "functions/helloWorldLambda"
+  output_path       = "output/helloWorldLambda.zip"
+}
+
+resource "aws_lambda_function" "schibbler_helloWorldLambda" {
+  filename          = "output/helloWorldLambda.zip"
+  source_code_hash  = "${data.archive_file.helloWorldLambdaZip.output_base64sha256}"
+  function_name     = "schibblerhelloWorldLambda"
+  handler           = "index.handler"
+  role              = "${aws_iam_role.helloWorldLambda.arn}"
+  runtime           = "nodejs8.10"
+}
+
+data "aws_iam_policy_document" "helloWorldLambda_policy" {
+  statement {
+    actions = ["sts:AssumeRole"]
+    principals {
+      type = "Service"
+      identifiers = ["lambda.amazonaws.com"]
+    }
+    effect = "Allow"
+  }
+}
+
+resource "aws_iam_role" "helloWorldLambda" {
+  name = "schibbler_helloWorldLambda_role"
+  
+  assume_role_policy = "${data.aws_iam_policy_document.helloWorldLambda_policy.json}"
+}
+
+
+resource "aws_iam_role_policy_attachment" "helloWorldLambda_policyAttachment" {
+  role = "${aws_iam_role.helloWorldLambda.name}"
+  policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
+}
+
+resource "aws_api_gateway_resource" "helloWorld" {
+  rest_api_id     = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
+  parent_id       = "${aws_api_gateway_rest_api.helloWorldGateway.root_resource_id}"
+  path_part       = "hello"
+}
+
+resource "aws_api_gateway_method" "helloWorldGet" {
+  rest_api_id     = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
+  resource_id     = "${aws_api_gateway_resource.helloWorld.id}"
+  http_method     = "GET"
+  authorization   = "NONE"
+}
+
+resource "aws_api_gateway_integration" "helloWorldGet" {
+  rest_api_id                 = "${aws_api_gateway_rest_api.helloWorldGateway.id}"
+  resource_id                 = "${aws_api_gateway_resource.helloWorld.id}"
+  http_method                 = "${aws_api_gateway_method.helloWorldGet.http_method}"
+  integration_http_method     = "POST"
+  type                        = "AWS_PROXY"
+  uri                         = "${aws_lambda_function.schibbler_helloWorldLambda.invoke_arn}"
+}
+
+resource "aws_lambda_permission" "restInvokation" {
+  statement_id              = "AllowExecutionFromAPIGateway"
+  action                    = "lambda:InvokeFunction"
+  function_name             = "${aws_lambda_function.schibbler_helloWorldLambda.arn}"
+  principal                 = "apigateway.amazonaws.com"
+
+  source_arn                = "${aws_api_gateway_deployment.helloWorldGateway.execution_arn}/GET/hello"
+}