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Merge pull request kubernetes-client#1997 from venukarnati92/master
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Dynamic Client Request Timeout Example
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yliaog authored Jan 29, 2023
2 parents 13988e4 + 655b78c commit a1a36b1
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70 changes: 70 additions & 0 deletions examples/dynamic-client/request_timeout.py
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# Copyright 2023 The Kubernetes Authors.
#
# 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.

"""
This example demonstrates the following:
- Creation of a k8s configmap using dynamic-client
- Setting the request timeout which is time duration in seconds
"""

from kubernetes import config, dynamic
from kubernetes.client import api_client


def main():
# Creating a dynamic client
client = dynamic.DynamicClient(
api_client.ApiClient(configuration=config.load_kube_config())
)

# fetching the configmap api
api = client.resources.get(api_version="v1", kind="ConfigMap")

configmap_name = "request-timeout-test-configmap"

configmap_manifest = {
"kind": "ConfigMap",
"apiVersion": "v1",
"metadata": {
"name": configmap_name,
"labels": {
"foo": "bar",
},
},
"data": {
"config.json": '{"command":"/usr/bin/mysqld_safe"}',
"frontend.cnf": "[mysqld]\nbind-address = 10.0.0.3\n",
},
}

# Creating configmap `request-timeout-test-configmap` in the `default` namespace
# Client-side timeout to 60 seconds

configmap = api.create(body=configmap_manifest, namespace="default", _request_time=60)

print("\n[INFO] configmap `request-timeout-test-configmap` created\n")

# Listing the configmaps in the `default` namespace
# Client-side timeout to 60 seconds

configmap_list = api.get(
name=configmap_name, namespace="default", label_selector="foo=bar", _request_time=60
)

print("NAME:\n%s\n" % (configmap_list.metadata.name))
print("DATA:\n%s\n" % (configmap_list.data))


if __name__ == "__main__":
main()
3 changes: 3 additions & 0 deletions examples/watch/timeout-settings.md
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Expand Up @@ -56,6 +56,9 @@ There are two inputs available in the client, that could be used to set connecti
***Refer***
- *[https://github.com/kubernetes-client/python/blob/v17.17.0/kubernetes/client/api_client.py#L336-L339](https://github.com/kubernetes-client/python/blob/v17.17.0/kubernetes/client/api_client.py#L336-L339)*

***Example***
- *[request_timeout.py](../dynamic-client/request_timeout.py)*

- In case of network outage, leading to dropping all packets with no RST/FIN, the timeout value (in seconds) determined by the `request_timeout` argument, would be the time duration for how long the client will wait before dropping the connection.

- When the timeout happens, an exception will be raised, for eg. ~
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