add compat shim for urllib3 2.x

Signed-off-by: wwanarif <[email protected]>

Author: wanhakim

studio-backend/app/__init__.py

@@ -0,0 +1,4 @@
+from app.compat import ensure_urllib3_getheaders
+
+# Ensure urllib3 2.x exposes HTTPResponse.getheaders for kubernetes client compatibility.
+ensure_urllib3_getheaders()

studio-backend/app/compat.py

@@ -0,0 +1,22 @@
+"""
+Compatibility shims for third-party libraries.
+
+Currently used to keep kubernetes-python working with urllib3 2.x, which
+removed HTTPResponse.getheaders(). Older kubernetes versions still call
+getheaders when building ApiException objects. This shim reintroduces a
+minimal getheaders that mirrors the previous behavior.
+"""
+from urllib3.response import HTTPResponse
+
+
+def ensure_urllib3_getheaders() -> None:
+    """Add HTTPResponse.getheaders if urllib3 2.x removed it.
+
+    Returns the header items as a list of (key, value) tuples, matching the
+    old http.client.HTTPResponse API used by kubernetes-python.
+    """
+    if not hasattr(HTTPResponse, "getheaders"):
+        def _getheaders(self):  # type: ignore[override]
+            return list(self.headers.items())
+
+        HTTPResponse.getheaders = _getheaders  # type: ignore[attr-defined]

studio-backend/app/main.py

@@ -1,5 +1,11 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+
+from app.compat import ensure_urllib3_getheaders
+
+# Restore HTTPResponse.getheaders expected by kubernetes-python when running with urllib3 2.x.
+ensure_urllib3_getheaders()
+
 from kubernetes import config
 
 # Load the kubeconfig file