fix: retry appengine/standard pip install (#9767)

* fix: retry appengine/standard pip install

* fix: add a delay

---------

Co-authored-by: nicain <[email protected]>

Author: engelke

appengine/standard/noxfile_config.py

@@ -0,0 +1,63 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be imported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/noxfile_config.py
+
+import time
+
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    "ignored_versions": ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"],
+    # Old samples are opted out of enforcing Python type hints
+    # All new samples should feature them
+    "enforce_type_hints": False,
+    # An envvar key for determining the project id to use. Change it
+    # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
+    # build specific Cloud project. You can also use your own string
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # If you need to use a specific version of pip,
+    # change pip_version_override to the string representation
+    # of the version number, for example, "20.2.4"
+    "pip_version_override": None,
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
+
+
+def retry_installs(func):
+    def wrap_in_retries(*args, **kwargs):
+        for attempt in range(3):
+            try:
+                result = func(*args, **kwargs)
+                return result
+            except Exception as e:
+                print(f"Attempt #{attempt} failed to install {*args}, {**kwargs}")
+                time.sleep(5)
+        raise e
+        
+    return wrap_in_retries
+
+
+SESSION_INSTALL = main.nox.Session.install
+main.nox.Session.install = retry_installs(SESSION_INSTALL)