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https://github.com/kubernetes-sigs/node-feature-discovery.git
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95ff300d74
When updating node labels and annotations use JSON patches instead of doing a read-modify-write on the whole node object. Patching is already being used in managing extended resources so some of the existing code was re-usable. This patch should mitigate the problem of node update failures caused by race conditions (a change in the node object between our read and write) resulting e.g. in errors/restarts in nfd worker pods.
43 lines
1.4 KiB
Go
43 lines
1.4 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package apihelper
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import (
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api "k8s.io/api/core/v1"
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k8sclient "k8s.io/client-go/kubernetes"
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)
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// APIHelpers represents a set of API helpers for Kubernetes
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type APIHelpers interface {
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// GetClient returns a client
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GetClient() (*k8sclient.Clientset, error)
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// GetNode returns the Kubernetes node on which this container is running.
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GetNode(*k8sclient.Clientset, string) (*api.Node, error)
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// GetNodes returns all the nodes in the cluster
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GetNodes(*k8sclient.Clientset) (*api.NodeList, error)
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// UpdateNode updates the node via the API server using a client.
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UpdateNode(*k8sclient.Clientset, *api.Node) error
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// PatchNode updates the node object via the API server using a client.
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PatchNode(*k8sclient.Clientset, string, []JsonPatch) error
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// PatchNodeStatus updates the node status via the API server using a client.
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PatchNodeStatus(*k8sclient.Clientset, string, []JsonPatch) error
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}
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