Tested and fixed tfstate store

Author: Emmy-github-webdev

terraform/apigw.tf

@@ -0,0 +1,37 @@
+resource "aws_apigatewayv2_api" "http_api" {
+  name          = "${var.env}-health-check-api"
+  protocol_type = "HTTP"
+}
+
+resource "aws_apigatewayv2_integration" "lambda_integration" {
+  api_id           = aws_apigatewayv2_api.http_api.id
+  integration_type = "AWS_PROXY"
+  integration_uri  = aws_lambda_function.health_check.arn
+  payload_format_version = "2.0"
+}
+
+resource "aws_apigatewayv2_route" "health_route" {
+  api_id    = aws_apigatewayv2_api.http_api.id
+  route_key = "GET /health"
+  target    = "integrations/${aws_apigatewayv2_integration.lambda_integration.id}"
+}
+
+resource "aws_apigatewayv2_route" "health_route_post" {
+  api_id    = aws_apigatewayv2_api.http_api.id
+  route_key = "POST /health"
+  target    = "integrations/${aws_apigatewayv2_integration.lambda_integration.id}"
+}
+
+resource "aws_apigatewayv2_stage" "default_stage" {
+  api_id      = aws_apigatewayv2_api.http_api.id
+  name        = "$default"
+  auto_deploy = true
+}
+
+resource "aws_lambda_permission" "allow_apigw" {
+  statement_id  = "${var.env}-allow-apigw"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.health_check.function_name
+  principal     = "apigateway.amazonaws.com"
+  source_arn    = "${aws_apigatewayv2_api.http_api.execution_arn}/*/*"
+}

terraform/backend-prod.tfvars

@@ -0,0 +1,4 @@
+bucket         = "serverlesshealthcheckapi"
+key            = "serverless-health-check-api/prod/tfstate"
+region         = "us-east-1"
+encrypt        = true

terraform/backend-staging.tfvars

@@ -0,0 +1,4 @@
+bucket         = "serverlesshealthcheckapi"
+key            = "serverless-health-check-api/staging/tfstate"
+region         = "us-east-1"
+encrypt        = true

terraform/backend.tfvars

@@ -0,0 +1,45 @@
+data "aws_iam_policy_document" "lambda_assume_role" {
+  statement {
+    effect = "Allow"
+    principals {
+      type = "Service"
+      identifiers = ["lambda.amazonaws.com"]
+    }
+    actions = ["sts:AssumeRole"]
+  }
+}
+
+resource "aws_iam_role" "lambda_role" {
+  name               = "${var.env}-health-check-lambda-role"
+  assume_role_policy = data.aws_iam_policy_document.lambda_assume_role.json
+  tags = {
+    Environment = var.env
+  }
+}
+
+resource "aws_iam_role_policy" "lambda_policy" {
+  name = "${var.env}-health-check-lambda-policy"
+  role = aws_iam_role.lambda_role.id
+
+  policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [
+      {
+        Effect = "Allow"
+        Action = [
+          "dynamodb:PutItem"
+        ]
+        Resource = aws_dynamodb_table.requests.arn
+      },
+      {
+        Effect = "Allow"
+        Action = [
+          "logs:CreateLogGroup",
+          "logs:CreateLogStream",
+          "logs:PutLogEvents"
+        ]
+        Resource = "arn:aws:logs:*:*:*"
+      }
+    ]
+  })
+}

terraform/iam.tf

@@ -0,0 +1,28 @@
+data "archive_file" "lambda_zip" {
+  type        = "zip"
+  output_path = "${path.module}/lambda_package/${var.env}-lambda.zip"
+
+  source {
+    content  = file("${path.module}/../lambda/lambda_function.py")
+    filename = "lambda_function.py"
+  }
+}
+
+resource "aws_lambda_function" "health_check" {
+  function_name = "${var.env}-health-check-function"
+  filename      = data.archive_file.lambda_zip.output_path
+  handler       = var.lambda_handler
+  runtime       = var.lambda_runtime
+  role          = aws_iam_role.lambda_role.arn
+  source_code_hash = data.archive_file.lambda_zip.output_base64sha256
+
+  environment {
+    variables = {
+      REQUESTS_TABLE = aws_dynamodb_table.requests.name
+    }
+  }
+
+  tags = {
+    Environment = var.env
+  }
+}

terraform/lambda.tf

@@ -1,64 +1,15 @@
-terraform {
-  required_version = ">= 1.0"
-
-  required_providers {
-    aws = {
-      source  = "hashicorp/aws"
-      version = "~> 5.0"
-    }
-  }
-}
-
-provider "aws" {
-  region = var.aws_region
-
-  default_tags {
-    tags = local.common_tags
+resource "aws_dynamodb_table" "requests" {
+  name         = "${var.env}-requests-db"
+  billing_mode = "PAY_PER_REQUEST"
+  hash_key     = "id"
+
+  attribute {
+    name = "id"
+    type = "S"
   }
-}
 
-locals {
-  common_tags = {
-    Environment = var.environment
-    Project     = var.project_name
-    ManagedBy   = "Terraform"
-    CreatedAt   = timestamp()
+  tags = {
+    Environment = var.env
+    Name        = "${var.env}-requests-db"
   }
 }
-
-# DynamoDB Module
-module "dynamodb" {
-  source      = "./modules/dynamodb"
-  environment = var.environment
-  common_tags = local.common_tags
-}
-
-# IAM Module
-module "iam" {
-  source = "./modules/iam"
-
-  environment        = var.environment
-  dynamodb_table_arn = module.dynamodb.table_arn
-  common_tags        = local.common_tags
-}
-
-# API Gateway Module
-module "api_gateway" {
-  source            = "./modules/api-gateway"
-  environment       = var.environment
-  lambda_invoke_arn = module.lambda.function_invoke_arn
-  common_tags       = local.common_tags
-}
-
-# Lambda Module
-module "lambda" {
-  source                    = "./modules/lambda"
-  environment               = var.environment
-  lambda_role_arn           = module.iam.lambda_role_arn
-  dynamodb_table_name       = module.dynamodb.table_name
-  api_gateway_execution_arn = module.api_gateway.execution_arn
-  lambda_funtion_dir        = var.lambda_funtion_dir
-  common_tags               = local.common_tags
-  # depends_on = [module.api_gateway]
-}
-