Cloud Function Implemented

.gitignore

@@ -1,3 +1,5 @@
+# node modules directories
+**/node_modules/*
 # Local .terraform directories
 **/.terraform/*
 

example/test/main.tf

@@ -0,0 +1,20 @@
+module "gcp_function" {
+  source                = "../../"
+  source_filename       = var.source_filename
+  source_dir            = var.source_dir
+  function_name         = var.function_name
+  function_entry_point  = var.function_entry_point
+  function_invoker_user = var.function_invoker_user
+  project               = var.project
+  runtime               = var.runtime
+  environment_variables = var.environment_variables
+}
+
+variable "source_filename" { type = string }
+variable "source_dir" { type = string }
+variable "function_name" { type = string }
+variable "function_entry_point" {}
+variable "function_invoker_user" { type = string }
+variable "project" { type = string }
+variable "runtime" { type = string }
+variable "environment_variables" { type = map(string) }

example/test/outputs.tf

@@ -0,0 +1,4 @@
+output "function_url" {
+  # Access the module output with module.<module_name>.<output_name>
+  value = module.gcp_function.function_url
+}

example/test/src/nodjs_sample/index.js

@@ -0,0 +1,11 @@
+const fastify = require('fastify')
+const app = fastify({ logger: true })
+
+app.get('/', async (req, res) => {
+  return { works: true }
+})
+
+exports.app = async (req, res) => {
+  await app.ready()
+  app.server.emit('request', req, res)
+}

example/test/src/nodjs_sample/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "function",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "fastify": "^3.24.1"
+  }
+}

example/test/src/python_sample/main.py

@@ -0,0 +1,21 @@
+import os
+import logging
+
+
+def http_handler(request):
+    """
+    HTTP Cloud Function that returns the value of FOO.
+    Args:
+        request (flask.Request): The request object.
+        <http://flask.pocoo.org/docs/1.0/api/#flask.Request>
+    Returns:
+        The response text, or any set of values that can be turned into a
+        Response object using `make_response`
+        <http://flask.pocoo.org/docs/1.0/api/#flask.Flask.make_response>.
+    """
+
+    logging.info('Handler Started!')
+
+    foo = os.environ.get('FOO')
+    response_body = f'The value of FOO is {foo}'
+    return response_body

example/test/src/python_sample/requirements.txt

@@ -0,0 +1 @@
+# Requirements added here will automatically downloaded by the Cloud Function

main.tf

@@ -1,6 +1,5 @@
 locals {
   timestamp = formatdate("YYMMDDhhmmss", timestamp())
-  root_dir  = abspath("../")
 }
 
 # Create bucket that will host the source code
@@ -12,7 +11,7 @@ resource "google_storage_bucket" "function_bucket" {
 # Compress source code
 data "archive_file" "source" {
   type        = "zip"
-  source_dir  = var.filename
+  source_dir  = var.source_dir
   output_path = "/tmp/function-${local.timestamp}.zip"
 }
 
@@ -29,14 +28,22 @@ resource "google_service_account" "service_account" {
   display_name = "Cloud Function Tutorial Invoker Service Account"
 }
 
-# Create IAM entry so all users can invoke the function
-resource "google_cloudfunctions_function_iam_member" "invoker" {
-  project        = google_cloudfunctions_function.function.project
-  region         = google_cloudfunctions_function.function.region
-  cloud_function = google_cloudfunctions_function.function.name
+# Enable Cloud Functions API
+resource "google_project_service" "cf" {
+  project = var.project
+  service = "cloudfunctions.googleapis.com"
 
-  role   = "roles/cloudfunctions.invoker"
-  member = "allUsers"
+  disable_dependent_services = true
+  disable_on_destroy         = false
+}
+
+# Enable Cloud Build API
+resource "google_project_service" "cb" {
+  project = var.project
+  service = "cloudbuild.googleapis.com"
+
+  disable_dependent_services = true
+  disable_on_destroy         = false
 }
 
 # Create Cloud Function
@@ -49,4 +56,15 @@ resource "google_cloudfunctions_function" "function" {
   source_archive_object = google_storage_bucket_object.zip.name
   trigger_http          = true
   entry_point           = var.function_entry_point
+  environment_variables = var.environment_variables
+}
+
+# Create IAM entry so all users can invoke the function
+resource "google_cloudfunctions_function_iam_member" "invoker" {
+  project        = google_cloudfunctions_function.function.project
+  region         = google_cloudfunctions_function.function.region
+  cloud_function = google_cloudfunctions_function.function.name
+
+  role   = "roles/cloudfunctions.invoker"
+  member = var.function_invoker_user
 }

outputs.tf

@@ -0,0 +1,3 @@
+output "function_url" {
+  value = google_cloudfunctions_function.function.https_trigger_url
+}

variables.tf

@@ -1,19 +1,16 @@
-variable "project" {
-  description = "Google Cloud Project ID"
-}
-variable "region" {
-  description = "Google Cloud Region"
-  default     = "us-central1"
-}
-
 variable "runtime" {
   description = "The runtime the google cloud function should run in. A list of all available runtimes can be found here: https://cloud.google.com/functions/docs/concepts/exec#runtimes"
   type        = string
-  default     = "nodejs12.x"
+  default     = "nodejs12"
+}
+
+variable "source_filename" {
+  description = "name of the file that contains the source code."
+  type        = string
 }
 
-variable "filename" {
-  description = "The path to the .zip file that contains the cloud function source code."
+variable "source_dir" {
+  description = "The path to the directory that contains the source code file. This directory should only contain the source code and will be compressed and uploaded to the bucket."
   type        = string
 }
 
@@ -28,10 +25,14 @@ variable "environment_variables" {
 }
 
 variable "function_entry_point" {
-  description = "The function entrypoint in the code. This is the name of the method in the code which receives the event and context parameter when this Lambda function is triggered. e.g: function_1.handler"
+  description = "The function entrypoint in the code. It might be the name of a method in your source code."
   type        = string
 }
 
+variable "function_invoker_user" {
+  description = "Identities that will be granted the privilege to invoke the function. Public: 'allUsers'."
+}
+
 variable "timeout" {
   description = "Timeout (in seconds) for the function. Default value is 60 seconds. Cannot be more than 540 seconds."
   default     = 60
@@ -43,11 +44,20 @@ variable "available_memory_mb" {
 }
 
 variable "labels" {
-  description = "{ my-label = \"my-label-value\" }"
+  description = "These lables will be attached to your hosted function in the cloud. { my-label = \"my-label-value\" }"
   default     = {}
 }
 
 variable "bucket_location" {
   description = "Available Google Bucket locations: https://cloud.google.com/storage/docs/locations"
   default     = "US"
 }
+
+variable "project" {
+  description = "Google Cloud Project ID"
+  type        = string
+}
+variable "region" {
+  description = "Google Cloud Region"
+  default     = "us-central1"
+}