refactor: refactored the whole config into module + added tflint

.gitignore

@@ -1,4 +1,4 @@
 .terraform/
 .terraform.*
 details.txt
-lambda/package/*
+lambda/package/*

.tflint.hcl

@@ -0,0 +1,5 @@
+plugin "aws" {
+  enabled = true
+  version = "0.29.0"
+  source  = "github.com/terraform-linters/tflint-ruleset-aws"
+}

main.tf

@@ -0,0 +1,58 @@
+module "lambda_checker" {
+  source                  = "./modules/lambda_checker"
+  sns_topic_arn           = module.sns.topic_arn
+  target_url              = var.target_url
+  dynamodb_table_name     = module.dynamodb.table_name
+  dynamodb_table_name_arn = module.dynamodb.table_arn
+
+}
+
+module "lambda_fetcher" {
+  source = "./modules/lambda_fetcher"
+
+  dynamodb_table_name     = module.dynamodb.table_name
+  dynamodb_table_name_arn = module.dynamodb.table_arn
+
+}
+
+module "event_bridge" {
+  source                = "./modules/event_bridge"
+  checker_function_arn  = module.lambda_checker.checker_function_arn
+  checker_function_name = module.lambda_checker.health_check_lambda_name
+
+}
+
+module "s3_fe" {
+  source       = "./modules/s3-fe"
+  api_endpoint = module.api_gw.api_endpoint
+
+}
+
+
+module "dynamodb" {
+  source = "./modules/dynamodb"
+
+}
+
+
+module "sns" {
+  source         = "./modules/sns"
+  email_endpoint = var.email_endpoint
+}
+
+
+module "api_gw" {
+  source                = "./modules/api_gw"
+  lambda_dashbaord_name = module.lambda_fetcher.dashboard_lambda_name
+  lambda_dashboard_arn  = module.lambda_fetcher.dashboard_lambda_arn
+
+}
+
+resource "aws_lambda_permission" "allow_cloudwatch" {
+  statement_id  = "AllowExecutionFromEventBridge"
+  action        = "lambda:InvokeFunction"
+  function_name = module.lambda_checker.health_check_lambda_name
+  principal     = "events.amazonaws.com"
+  source_arn    = module.event_bridge.event_rule
+}
+

api.tf → modules/api_gw/main.tf

@@ -13,7 +13,7 @@ resource "aws_apigatewayv2_integration" "lambda_integration" {
   api_id             = aws_apigatewayv2_api.dashboard_api.id
   integration_type   = "AWS_PROXY"
   integration_method = "POST"
-  integration_uri    = aws_lambda_function.dashboard_lambda.invoke_arn
+  integration_uri    = var.lambda_dashboard_arn
   payload_format_version = "2.0"
 }
 
@@ -35,7 +35,7 @@ resource "aws_apigatewayv2_stage" "api_stage" {
 resource "aws_lambda_permission" "apigw_lambda_permission" {
   statement_id  = "AllowAPIGatewayInvoke"
   action        = "lambda:InvokeFunction"
-  function_name = aws_lambda_function.dashboard_lambda.function_name
+  function_name = var.lambda_dashbaord_name
   principal     = "apigateway.amazonaws.com"
 
   source_arn = "${aws_apigatewayv2_api.dashboard_api.execution_arn}/*/*"

modules/api_gw/outputs.tf

@@ -0,0 +1,4 @@
+output "api_endpoint" {
+    value = aws_apigatewayv2_api.dashboard_api.api_endpoint
+
+}

modules/api_gw/variables.tf

@@ -0,0 +1,7 @@
+variable "lambda_dashboard_arn" {
+  type = string
+}
+
+variable "lambda_dashbaord_name" {
+    type = string
+}

modules/dynamodb/main.tf

@@ -0,0 +1,25 @@
+resource "aws_dynamodb_table" "health_check_results" {
+  name             = "WebsiteHealthCheckResults"
+  billing_mode     = "PAY_PER_REQUEST" 
+  hash_key         = "Timestamp"
+  range_key        = "URL"
+
+  attribute {
+    name = "Timestamp"
+    type = "S" 
+  }
+
+  attribute {
+    name = "URL"
+    type = "S"
+  }
+
+  tags = {
+    Name = "WebsiteHealthCheckResults"
+  }
+}
+
+
+
+
+

modules/dynamodb/outputs.tf

@@ -0,0 +1,7 @@
+output "table_arn" {
+  value = aws_dynamodb_table.health_check_results.arn
+}
+
+output "table_name" {
+  value = aws_dynamodb_table.health_check_results.name
+}

event_bridge.tf → modules/event_bridge/main.tf

@@ -7,15 +7,15 @@ resource "aws_cloudwatch_event_rule" "five_min_schedule" {
 
 resource "aws_cloudwatch_event_target" "lambda_target" {
   rule      = aws_cloudwatch_event_rule.five_min_schedule.name
-  arn       = aws_lambda_function.health_check_lambda.arn
+  arn       = var.checker_function_arn
   target_id = "HealthCheckLambdaTarget"
 }
 
 
 resource "aws_lambda_permission" "allow_eventbridge" {
   statement_id  = "AllowExecutionFromEventBridge2"
   action        = "lambda:InvokeFunction"
-  function_name = aws_lambda_function.health_check_lambda.function_name
+  function_name = var.checker_function_name
   principal     = "events.amazonaws.com"
   source_arn    = aws_cloudwatch_event_rule.five_min_schedule.arn
 }