add cloudwatch role

apigw/apigw-hello-world-lambda/apigw.tf

@@ -1,10 +1,66 @@
 resource "aws_api_gateway_rest_api" "hello_world" {
   name        = "basic-invoke-lambda-function"
   description = "API Gateway for Hello World Lambda"
+
 }
 
-resource "aws_api_gateway_resource" "proxy" {
+
+resource "aws_api_gateway_resource" "hello_world" {
   rest_api_id = aws_api_gateway_rest_api.hello_world.id
   parent_id   = aws_api_gateway_rest_api.hello_world.root_resource_id
-  path_part   = "{proxy+}"
+  path_part   = "hello-world"
+
+}
+
+
+resource "aws_api_gateway_method" "hello_world_method" {
+  rest_api_id   = aws_api_gateway_rest_api.hello_world.id
+  resource_id   = aws_api_gateway_resource.hello_world.id
+  http_method   = "GET"
+  authorization = "NONE"
+
+}
+
+
+resource "aws_api_gateway_method_settings" "default" {
+  rest_api_id = aws_api_gateway_rest_api.hello_world.id
+  stage_name  = aws_api_gateway_stage.production.stage_name
+  method_path = "*/*"
+
+  settings {
+    metrics_enabled = true
+    logging_level   = "INFO"
+
+  }
+}
+
+
+resource "aws_api_gateway_integration" "lambda_integration" {
+  rest_api_id = aws_api_gateway_rest_api.hello_world.id
+  resource_id = aws_api_gateway_resource.hello_world.id
+  http_method = aws_api_gateway_method.hello_world_method.http_method
+
+  integration_http_method = "POST"
+  type                    = "AWS_PROXY"
+  uri                     = aws_lambda_function.hello_world.invoke_arn
+}
+
+resource "aws_api_gateway_stage" "production" {
+  deployment_id = aws_api_gateway_deployment.hello_world_deployment.id
+  rest_api_id   = aws_api_gateway_rest_api.hello_world.id
+  stage_name    = "production"
+}
+
+resource "aws_api_gateway_account" "api_gw_account" {
+  cloudwatch_role_arn = aws_iam_role.api_gateway_cloudwatch_role.arn
+}
+
+
+resource "aws_api_gateway_deployment" "hello_world_deployment" {
+  rest_api_id = aws_api_gateway_rest_api.hello_world.id
+
+  depends_on = [
+    aws_api_gateway_method.hello_world_method,
+    aws_api_gateway_integration.lambda_integration
+  ]
 }

apigw/apigw-hello-world-lambda/lambda.tf

@@ -24,7 +24,7 @@ resource "aws_iam_role_policy_attachment" "lambda_s3_policy_attachment" {
 
 
 # Step 4: Create the Lambda function (assuming the Lambda ZIP package is uploaded)
-resource "aws_lambda_function" "hello-world" {
+resource "aws_lambda_function" "hello_world" {
   function_name = "hello-world"
   filename      = "lambda.zip"
   source_code_hash = data.archive_file.lambda.output_base64sha256
@@ -33,3 +33,11 @@ resource "aws_lambda_function" "hello-world" {
   role    = aws_iam_role.lambda_execution_role.arn
   timeout = 30
 }
+resource "aws_lambda_permission" "api_gw_permission" {
+  statement_id  = "AllowExecutionFromApiGateway"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.hello_world.function_name
+  principal     = "apigateway.amazonaws.com"
+
+  source_arn = "${aws_api_gateway_rest_api.hello_world.execution_arn}/*/*"
+}

apigw/apigw-hello-world-lambda/lambda/main.py

@@ -1,4 +1,11 @@
+import json
 def lambda_handler(event, context):
-    return { 
-        'message' : "Hello World"
+    message = {
+        'message': 'Hello World'
     }
+
+    return {
+    'statusCode': 200,
+    'headers': {'Content-Type': 'application/json'},
+    'body': json.dumps(message)
+    }