From 6712d4a57b2a7bf9b7befef7c6da58712be72c1f Mon Sep 17 00:00:00 2001
From: Kane Zhu <843303+zxkane@users.noreply.github.com>
Date: Thu, 27 Aug 2026 14:14:37 +0800
Subject: [PATCH] fix(lambda): uppercase LOG_LEVEL in the shared lambda module

#5238 wrapped every LOG_LEVEL assignment with upper() so that Powertools
v2 stops silently discarding the value, but it missed
modules/lambda/main.tf. That module builds the environment for four
functions: runners/job-retry, termination-watcher/deregister-retry,
termination-watcher/notification and termination-watcher/termination.

The variable is validated against lowercase names only ("debug", "info",
"warn", "error"), so the value reaching those four functions can never
match Powertools' uppercase LogLevelThreshold keys. Every level silently
resolves to INFO. Requesting "debug" yields no debug output, and
requesting "warn" or "error" yields more output than asked for.

POWERTOOLS_LOGGER_LOG_EVENT keeps comparing the raw lowercase variable,
which is still correct.

Signed-off-by: Kane Zhu <843303+zxkane@users.noreply.github.com>
---
 modules/lambda/main.tf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/lambda/main.tf b/modules/lambda/main.tf
index 7cc3094f28..124a933d4a 100644
--- a/modules/lambda/main.tf
+++ b/modules/lambda/main.tf
@@ -3,7 +3,7 @@ locals {
 
   lambda_environment_variables = {
     ENVIRONMENT                              = var.lambda.prefix
-    LOG_LEVEL                                = var.lambda.log_level
+    LOG_LEVEL                                = upper(var.lambda.log_level)
     PREFIX                                   = var.lambda.prefix
     POWERTOOLS_LOGGER_LOG_EVENT              = var.lambda.log_level == "debug" ? "true" : "false"
     POWERTOOLS_SERVICE_NAME                  = var.lambda.name