Merge pull request kubernetes-client#2175 from arcivanov/issue_2169

Provides a patch to stop using urllib3 deprecated APIs until the upgrade to latest OpenAPI Generator (>6.4.0)

Author: k8s-ci-robot

scripts/rest_urllib_headers.diff

@@ -0,0 +1,13 @@
+diff --git a/kubernetes/client/exceptions.py b/kubernetes/client/exceptions.py
+index c7c152b5..1e23d80a 100644
+--- a/kubernetes/client/exceptions.py
++++ b/kubernetes/client/exceptions.py
+@@ -88,7 +88,7 @@ class ApiException(OpenApiException):
+             self.status = http_resp.status
+             self.reason = http_resp.reason
+             self.body = http_resp.data
+-            self.headers = http_resp.getheaders()
++            self.headers = http_resp.headers
+         else:
+             self.status = status
+             self.reason = reason

scripts/update-client.sh

@@ -78,6 +78,8 @@ git apply "${SCRIPT_ROOT}/rest_client_patch.diff"
 # once we upgrade to a version of swagger-codegen that includes it (version>= 6.6.0).
 # See https://github.com/OpenAPITools/openapi-generator/pull/15283
 git apply "${SCRIPT_ROOT}/rest_sni_patch.diff"
+# OpenAPI client generator prior to 6.4.0 uses deprecated urllib3 APIs.
+git apply "${SCRIPT_ROOT}/rest_urllib_headers.diff"
 
 echo ">>> generating docs..."
 pushd "${DOC_ROOT}" > /dev/null