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API Gateway/Lambda Example
resource "aws_api_gateway_rest_api" "example" {
name = "ServerlessExample"
description = "Terraform Serverless Application Example"
}
resource "aws_api_gateway_resource" "proxy" {
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
parent_id = "${aws_api_gateway_rest_api.example.root_resource_id}"
path_part = "{proxy+}"
}
resource "aws_api_gateway_method" "proxy" {
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
resource_id = "${aws_api_gateway_resource.proxy.id}"
http_method = "ANY"
authorization = "NONE"
}
resource "aws_api_gateway_integration" "lambda" {
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
resource_id = "${aws_api_gateway_method.proxy.resource_id}"
http_method = "${aws_api_gateway_method.proxy.http_method}"
integration_http_method = "POST"
type = "AWS_PROXY"
uri = "${aws_lambda_function.example.invoke_arn}"
}
resource "aws_api_gateway_method" "proxy_root" {
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
resource_id = "${aws_api_gateway_rest_api.example.root_resource_id}"
http_method = "ANY"
authorization = "NONE"
}
resource "aws_api_gateway_integration" "lambda_root" {
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
resource_id = "${aws_api_gateway_method.proxy_root.resource_id}"
http_method = "${aws_api_gateway_method.proxy_root.http_method}"
integration_http_method = "POST"
type = "AWS_PROXY"
uri = "${aws_lambda_function.example.invoke_arn}"
}
resource "aws_api_gateway_deployment" "example" {
depends_on = [
"aws_api_gateway_integration.lambda",
"aws_api_gateway_integration.lambda_root",
]
rest_api_id = "${aws_api_gateway_rest_api.example.id}"
stage_name = "test"
}
output "base_url" {
value = "${aws_api_gateway_deployment.example.invoke_url}"
}
provider "aws" {
region = "us-east-1"
}
variable "app_version" {
}
resource "aws_lambda_function" "example" {
function_name = "ServerlessExample"
# The bucket name as created earlier with "aws s3api create-bucket"
s3_bucket = "analyzere-terraform-serverless-example"
s3_key = "v${var.app_version}/example.zip"
# "main" is the filename within the zip file (main.js) and "handler"
# is the name of the property under which the handler function was
# exported in that file.
handler = "main.handler"
runtime = "nodejs6.10"
role = "${aws_iam_role.lambda_exec.arn}"
}
# IAM role which dictates what other AWS services the Lambda function
# may access.
resource "aws_iam_role" "lambda_exec" {
name = "serverless_example_lambda"
assume_role_policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Effect": "Allow",
"Sid": ""
}
]
}
EOF
}
resource "aws_lambda_permission" "apigw" {
statement_id = "AllowAPIGatewayInvoke"
action = "lambda:InvokeFunction"
function_name = "${aws_lambda_function.example.arn}"
principal = "apigateway.amazonaws.com"
# The /*/* portion grants access from any method on any resource
# within the API Gateway "REST API".
source_arn = "${aws_api_gateway_deployment.example.execution_arn}/*/*"
}
'use strict'
exports.handler = function(event, context, callback) {
var response = {
statusCode: 200,
headers: {
'Content-Type': 'text/html; charset=utf-8'
},
body: '<p>Bonjour au monde!</p>'
}
callback(null, response)
}
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