Add AlbHealthcheckMiddleware for ALB health checks

Author: OutboundSpade

config/settings/base.py

@@ -140,6 +140,7 @@
 # ------------------------------------------------------------------------------
 # https://docs.djangoproject.com/en/dev/ref/settings/#middleware
 MIDDLEWARE = [
+    "teleband.utils.health_check.AlbHealthcheckMiddleware",
     "django.middleware.security.SecurityMiddleware",
     "corsheaders.middleware.CorsMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",

teleband/utils/health_check.py

@@ -0,0 +1,11 @@
+from django.http import HttpResponse
+
+class AlbHealthcheckMiddleware:
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        # Bypass host validation path for ALB health checks
+        if request.path == "/healthz":
+            return HttpResponse("ok", status=200)
+        return self.get_response(request)