From f21165263d3f8cae4c4c50d20d99ddf9a1bc3c6d Mon Sep 17 00:00:00 2001
From: farkhalit rida <farkhlait@sproutxp.com>
Date: Fri, 30 Oct 2026 17:00:23 +0530
Subject: [PATCH] fix: honor api_endpoint, universe and mTLS in
 new_batch_http_request

---
 googleapiclient/discovery.py |  9 ++++--
 tests/test_discovery.py      | 54 ++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/googleapiclient/discovery.py b/googleapiclient/discovery.py
index 4e92b2cc1b..c8e867a600 100644
--- a/googleapiclient/discovery.py
+++ b/googleapiclient/discovery.py
@@ -1502,9 +1502,12 @@ def _set_service_methods(self):
     def _add_basic_methods(self, resourceDesc, rootDesc, schema):
         # If this is the root Resource, add a new_batch_http_request() method.
         if resourceDesc == rootDesc:
-            batch_uri = "%s%s" % (
-                rootDesc["rootUrl"],
-                rootDesc.get("batchPath", "batch"),
+            # batchPath is relative to rootUrl, but the host must come from the
+            # base URL so the batch follows the universe domain, api_endpoint
+            # and mTLS endpoint the same way every other request does.
+            batch_uri = _fix_up_media_path_base_url(
+                "%s%s" % (rootDesc["rootUrl"], rootDesc.get("batchPath", "batch")),
+                self._baseUrl,
             )
 
             def new_batch_http_request(callback=None):
diff --git a/tests/test_discovery.py b/tests/test_discovery.py
index 6912783451..6e9ba2c3bb 100644
--- a/tests/test_discovery.py
+++ b/tests/test_discovery.py
@@ -722,6 +722,20 @@ def test_api_endpoint_override_from_client_options_dict(self):
 
         self.assertEqual(plus._baseUrl, api_endpoint)
 
+    def test_batch_request_uses_api_endpoint_override(self):
+        discovery = read_datafile("zoo.json")
+        api_endpoint = "https://foo.googleapis.com/zoo/v1/"
+        zoo = build_from_document(
+            discovery,
+            client_options={"api_endpoint": api_endpoint},
+            credentials=self.MOCK_CREDENTIALS,
+        )
+        batch_request = zoo.new_batch_http_request()
+
+        self.assertEqual(
+            batch_request._batch_uri, "https://foo.googleapis.com/batchZoo"
+        )
+
     def test_scopes_from_client_options(self):
         discovery = read_datafile("plus.json")
 
@@ -983,6 +997,29 @@ def test_mtls_with_provided_client_cert_unset_environment_variable(
                                 self.assertIsNotNone(plus)
                                 self.assertEqual(plus._baseUrl, base_url)
 
+    def test_batch_request_uses_mtls_endpoint(self):
+        discovery = read_datafile("zoo.json")
+
+        with mock.patch.dict("os.environ", {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
+            with mock.patch.dict(
+                "os.environ", {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}
+            ):
+                zoo = build_from_document(
+                    discovery,
+                    credentials=self.MOCK_CREDENTIALS,
+                    client_options={
+                        "client_encrypted_cert_source": self.client_encrypted_cert_source
+                    },
+                )
+                batch_request = zoo.new_batch_http_request()
+
+                self.assertEqual(
+                    zoo._baseUrl, "https://www.mtls.googleapis.com/zoo/v1/"
+                )
+                self.assertEqual(
+                    batch_request._batch_uri, "https://www.mtls.googleapis.com/batchZoo"
+                )
+
     @parameterized.expand(
         [
             ("never", "true"),
@@ -2852,6 +2889,23 @@ def test_universe_env_var_configured_with_client_options_universe(self):
 
             assert tasks._universe_domain == fake_universe
 
+        def test_batch_request_uses_universe_domain(self):
+            fake_universe = "foo.com"
+            credentials = mock.Mock(universe_domain=fake_universe)
+            discovery = read_datafile("zoo.json")
+
+            zoo = build_from_document(
+                discovery,
+                credentials=credentials,
+                client_options=google.api_core.client_options.ClientOptions(
+                    universe_domain=fake_universe
+                ),
+            )
+            batch_request = zoo.new_batch_http_request()
+
+            assert zoo._baseUrl == "https://www.foo.com/zoo/v1/"
+            assert batch_request._batch_uri == "https://www.foo.com/batchZoo"
+
     else:
         if hasattr(google.api_core.client_options.ClientOptions, "universe_domain"):