feat: Add global exception handling and custom 503 error page

WikiMovimentoBrasil · Dec 28, 2024 · 9dbb4ae · 9dbb4ae
1 parent 70f990f
commit 9dbb4ae
Show file tree

Hide file tree

Showing 3 changed files with 43 additions and 0 deletions.
diff --git a/templates/503.html b/templates/503.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="pt-br">
+<head>
+    <title>Toolforge Database Error - WikiScore</title>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="/static/w3.css">
+    <link href="https://tools-static.wmflabs.org/fontcdn/css?family=Roboto" rel="stylesheet" type="text/css">
+</head>
+<body style="font-family: 'Roboto', sans-serif;">
+
+<!-- Header -->
+<header class="w3-container w3-content w3-padding-32 w3-center">
+    <img alt="logo" src="/static/Logo_Preto_Tagline.svg" style="width: 300px;">
+    <h1 class="w3-jumbo w3-text-red">Toolforge Database Error</h1>
+    <p class="w3-xlarge">We encountered a database connection issue with Toolforge.</p>
+    <p class="w3-xlarge">This is a temporary issue with Toolforge's database infrastructure and not a problem with our service.</p>
+    <p class="w3-xlarge">Please try again in a few minutes. We apologize for the inconvenience.</p>
+    <button class="w3-button w3-black w3-padding w3-margin-top w3-round-xxlarge" onclick="location.href='/'">Return to homepage</button>
+</header>
+
+</body>
+</html>
diff --git a/wikiscore/middleware.py b/wikiscore/middleware.py
@@ -0,0 +1,19 @@
+from django.shortcuts import render
+import traceback
+
+class GlobalExceptionMiddleware:
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        try:
+            response = self.get_response(request)
+            return response
+        except AttributeError as e:
+            tb = traceback.format_exc()
+            if "'NoneType' object has no attribute 'settimeout'" in str(e) and "pymysql" in tb:
+                # Return a 503 Service Unavailable response
+                response = render(request, '503.html', status=503)
+            else:
+                raise
+        return response
diff --git a/wikiscore/settings.py b/wikiscore/settings.py
@@ -53,6 +53,7 @@
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'social_django.middleware.SocialAuthExceptionMiddleware',
+    'wikiscore.middleware.GlobalExceptionMiddleware',
 ]
 
 ROOT_URLCONF = 'wikiscore.urls'