# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
# from https://github.com/tomplus/kubernetes_asyncio/pull/239/files
from __future__ import annotations
import re
from typing import TYPE_CHECKING
from kubernetes import client
if TYPE_CHECKING:
from kubernetes.client import ApiClient
[docs]
DEFAULT_DELETION_BODY = client.V1DeleteOptions(
propagation_policy="Background",
grace_period_seconds=5,
)
[docs]
def delete_from_dict(k8s_client, data, body, namespace, verbose=False, **kwargs):
api_exceptions = []
if "List" in data["kind"]:
kind = data["kind"].replace("List", "")
for yml_doc in data["items"]:
if kind != "":
yml_doc["apiVersion"] = data["apiVersion"]
yml_doc["kind"] = kind
try:
_delete_from_yaml_single_item(
k8s_client=k8s_client,
yml_document=yml_doc,
verbose=verbose,
namespace=namespace,
body=body,
**kwargs,
)
except client.rest.ApiException as api_exception:
api_exceptions.append(api_exception)
else:
try:
_delete_from_yaml_single_item(
k8s_client=k8s_client,
yml_document=data,
verbose=verbose,
namespace=namespace,
body=body,
**kwargs,
)
except client.rest.ApiException as api_exception:
api_exceptions.append(api_exception)
if api_exceptions:
raise FailToDeleteError(api_exceptions)
[docs]
def delete_from_yaml(
*,
k8s_client: ApiClient,
yaml_objects=None,
verbose: bool = False,
namespace: str = "default",
body: dict | None = None,
**kwargs,
):
for yml_document in yaml_objects:
if yml_document is not None:
delete_from_dict(
k8s_client=k8s_client,
data=yml_document,
body=body,
namespace=namespace,
verbose=verbose,
**kwargs,
)
def _delete_from_yaml_single_item(
*,
k8s_client: ApiClient,
yml_document: dict,
verbose: bool = False,
namespace: str = "default",
body: dict | None = None,
**kwargs,
):
if body is None:
body = DEFAULT_DELETION_BODY
# get group and version from apiVersion
group, _, version = yml_document["apiVersion"].partition("/")
if version == "":
version = group
group = "core"
# Take care for the case e.g. api_type is "apiextensions.k8s.io"
# Only replace the last instance
group = "".join(group.rsplit(".k8s.io", 1))
# convert group name from DNS subdomain format to
# python class name convention
group = "".join(word.capitalize() for word in group.split("."))
fcn_to_call = f"{group}{version.capitalize()}Api"
k8s_api = getattr(client, fcn_to_call)(k8s_client)
# Replace CamelCased action_type into snake_case
kind = yml_document["kind"]
kind = re.sub("(.)([A-Z][a-z]+)", r"\1_\2", kind)
kind = re.sub("([a-z0-9])([A-Z])", r"\1_\2", kind).lower()
# Decide which namespace we are going to use for deleting the object
# IMPORTANT: the docs namespace takes precedence over the namespace in args
# create_from_yaml_single_item have same behaviour
if "namespace" in yml_document["metadata"]:
namespace = yml_document["metadata"]["namespace"]
name = yml_document["metadata"]["name"]
# Expect the user to delete namespaced objects more often
resp: client.V1Status
if hasattr(k8s_api, f"delete_namespaced_{kind}"):
resp = getattr(k8s_api, f"delete_namespaced_{kind}")(
name=name, namespace=namespace, body=body, **kwargs
)
else:
resp = getattr(k8s_api, f"delete_{kind}")(name=name, body=body, **kwargs)
if verbose:
print(f"{kind} deleted. status='{resp.status}'")
return resp
[docs]
class FailToDeleteError(Exception):
"""For handling error if an error occurred when handling a yaml file during deletion of the resource."""
def __init__(self, api_exceptions: list):
[docs]
self.api_exceptions = api_exceptions
[docs]
def __str__(self):
msg = ""
for api_exception in self.api_exceptions:
msg += f"Error from server ({api_exception.reason}):{api_exception.body}\n"
return msg