rename folder

apigw/hello-world/README.md

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+# API Gateway to trigger Hello World Lambda Function

apigw/hello-world/apigw.tf

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+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" "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   = "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/hello-world/data.tf

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+data "archive_file" "lambda" {
+  type        = "zip"
+  source_dir  = "${path.module}/lambda/"
+  output_path = "${path.module}/lambda.zip"
+}

apigw/hello-world/lambda.tf

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+resource "aws_iam_policy" "lambda_s3_access_policy" {
+  name = "lambda_s3_access_policy"
+
+  policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [
+      {
+        Action = [
+          "logs:CreateLogGroup",
+          "logs:CreateLogStream",
+          "logs:PutLogEvents"
+        ]
+        Effect   = "Allow"
+        Resource = "arn:aws:logs:*:*:*"
+      }
+    ]
+  })
+}
+
+resource "aws_iam_role_policy_attachment" "lambda_s3_policy_attachment" {
+  role       = aws_iam_role.lambda_execution_role.name
+  policy_arn = aws_iam_policy.lambda_s3_access_policy.arn
+}
+
+
+# Step 4: Create the Lambda function (assuming the Lambda ZIP package is uploaded)
+resource "aws_lambda_function" "hello_world" {
+  function_name = "hello-world"
+  filename      = "lambda.zip"
+  source_code_hash = data.archive_file.lambda.output_base64sha256
+  handler = "main.lambda_handler"  
+  runtime = "python3.10"  # Adjust as per your runtime
+  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/hello-world/lambda/main.py

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

apigw/hello-world/main.tf

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+resource "aws_iam_role" "lambda_execution_role" {
+  name = "lambda_execution_role"
+
+  assume_role_policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [
+      {
+        Action = "sts:AssumeRole"
+        Effect = "Allow"
+        Principal = {
+          Service = "lambda.amazonaws.com"
+        }
+      },
+    ]
+  })
+}

apigw/hello-world/provider.tf

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+provider "aws" {
+  region = "us-east-1"
+  access_key = var.access_key
+  secret_key = var.secret_key
+}

apigw/hello-world/variables.tf

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+variable "access_key" {
+
+}
+
+variable "secret_key" {
+
+}