mirror of
https://github.com/ceph/ceph-csi.git
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50 lines
1.9 KiB
Go
50 lines
1.9 KiB
Go
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/*
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Copyright 2015 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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// Reads the pod configuration from the Kubernetes apiserver.
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package config
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import (
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/wait"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/cache"
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api "k8s.io/kubernetes/pkg/apis/core"
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kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
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)
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// NewSourceApiserver creates a config source that watches and pulls from the apiserver.
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func NewSourceApiserver(c clientset.Interface, nodeName types.NodeName, updates chan<- interface{}) {
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lw := cache.NewListWatchFromClient(c.CoreV1().RESTClient(), "pods", metav1.NamespaceAll, fields.OneTermEqualSelector(api.PodHostField, string(nodeName)))
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newSourceApiserverFromLW(lw, updates)
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}
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// newSourceApiserverFromLW holds creates a config source that watches and pulls from the apiserver.
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func newSourceApiserverFromLW(lw cache.ListerWatcher, updates chan<- interface{}) {
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send := func(objs []interface{}) {
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var pods []*v1.Pod
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for _, o := range objs {
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pods = append(pods, o.(*v1.Pod))
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}
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updates <- kubetypes.PodUpdate{Pods: pods, Op: kubetypes.SET, Source: kubetypes.ApiserverSource}
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}
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r := cache.NewReflector(lw, &v1.Pod{}, cache.NewUndeltaStore(send, cache.MetaNamespaceKeyFunc), 0)
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go r.Run(wait.NeverStop)
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}
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