From a276f3ec9339aebf86bb839c41722cd367c67980 Mon Sep 17 00:00:00 2001
From: RG756 <rgoto.lancaster.biel@gmail.com>
Date: Tue, 22 Sep 2026 16:45:39 +0900
Subject: [PATCH] feat: enable X-Ray tracing for Lambda and API Gateway

---
 project-d-serverless-api/apigateway.tf | 1 +
 project-d-serverless-api/iam.tf        | 6 ++++++
 project-d-serverless-api/lambda.tf     | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/project-d-serverless-api/apigateway.tf b/project-d-serverless-api/apigateway.tf
index bdcbea8..a4341b5 100644
--- a/project-d-serverless-api/apigateway.tf
+++ b/project-d-serverless-api/apigateway.tf
@@ -157,6 +157,7 @@ resource "aws_api_gateway_stage" "prod" {
   rest_api_id   = aws_api_gateway_rest_api.api.id
   deployment_id = aws_api_gateway_deployment.deploy.id
   stage_name    = "prod"
+  xray_tracing_enabled = true
 
   # Access logging: records who called which endpoint and when
   access_log_settings {
diff --git a/project-d-serverless-api/iam.tf b/project-d-serverless-api/iam.tf
index b9be6d8..05f0c6d 100644
--- a/project-d-serverless-api/iam.tf
+++ b/project-d-serverless-api/iam.tf
@@ -51,6 +51,12 @@ resource "aws_iam_role_policy_attachment" "lambda_logs" {
   policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
 }
 
+# Policy: Allow Lambda to send traces to X-Ray
+resource "aws_iam_role_policy_attachment" "lambda_xray" {
+  role       = aws_iam_role.lambda_role.name
+  policy_arn = "arn:aws:iam::aws:policy/AWSXRayDaemonWriteAccess"
+}
+
 # =============================================================================
 # IAM Role for API Gateway -> CloudWatch Logs
 # =============================================================================
diff --git a/project-d-serverless-api/lambda.tf b/project-d-serverless-api/lambda.tf
index 1ff457a..f627bb2 100644
--- a/project-d-serverless-api/lambda.tf
+++ b/project-d-serverless-api/lambda.tf
@@ -28,6 +28,10 @@ resource "aws_lambda_function" "api" {
   tags = {
     Project = var.project_name
   }
+
+  tracing_config {
+    mode = "Active"
+  }
 }
 
 # =============================================================================