mirror of
https://github.com/ceph/ceph-csi.git
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5af3fe5deb
this commits add the controller runtime and its dependency to the vendor. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
104 lines
3.7 KiB
Go
104 lines
3.7 KiB
Go
/*
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Copyright 2018 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 internal
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import (
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"context"
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"time"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/cache"
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)
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// InformersMap create and caches Informers for (runtime.Object, schema.GroupVersionKind) pairs.
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// It uses a standard parameter codec constructed based on the given generated Scheme.
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type InformersMap struct {
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// we abstract over the details of structured vs unstructured with the specificInformerMaps
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structured *specificInformersMap
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unstructured *specificInformersMap
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// Scheme maps runtime.Objects to GroupVersionKinds
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Scheme *runtime.Scheme
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}
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// NewInformersMap creates a new InformersMap that can create informers for
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// both structured and unstructured objects.
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func NewInformersMap(config *rest.Config,
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scheme *runtime.Scheme,
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mapper meta.RESTMapper,
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resync time.Duration,
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namespace string) *InformersMap {
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return &InformersMap{
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structured: newStructuredInformersMap(config, scheme, mapper, resync, namespace),
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unstructured: newUnstructuredInformersMap(config, scheme, mapper, resync, namespace),
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Scheme: scheme,
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}
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}
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// Start calls Run on each of the informers and sets started to true. Blocks on the stop channel.
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func (m *InformersMap) Start(stop <-chan struct{}) error {
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go m.structured.Start(stop)
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go m.unstructured.Start(stop)
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<-stop
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return nil
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}
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// WaitForCacheSync waits until all the caches have been started and synced.
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func (m *InformersMap) WaitForCacheSync(stop <-chan struct{}) bool {
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syncedFuncs := append([]cache.InformerSynced(nil), m.structured.HasSyncedFuncs()...)
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syncedFuncs = append(syncedFuncs, m.unstructured.HasSyncedFuncs()...)
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if !m.structured.waitForStarted(stop) {
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return false
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}
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if !m.unstructured.waitForStarted(stop) {
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return false
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}
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return cache.WaitForCacheSync(stop, syncedFuncs...)
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}
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// Get will create a new Informer and add it to the map of InformersMap if none exists. Returns
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// the Informer from the map.
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func (m *InformersMap) Get(ctx context.Context, gvk schema.GroupVersionKind, obj runtime.Object) (bool, *MapEntry, error) {
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_, isUnstructured := obj.(*unstructured.Unstructured)
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_, isUnstructuredList := obj.(*unstructured.UnstructuredList)
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isUnstructured = isUnstructured || isUnstructuredList
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if isUnstructured {
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return m.unstructured.Get(ctx, gvk, obj)
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}
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return m.structured.Get(ctx, gvk, obj)
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}
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// newStructuredInformersMap creates a new InformersMap for structured objects.
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func newStructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration, namespace string) *specificInformersMap {
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return newSpecificInformersMap(config, scheme, mapper, resync, namespace, createStructuredListWatch)
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}
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// newUnstructuredInformersMap creates a new InformersMap for unstructured objects.
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func newUnstructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration, namespace string) *specificInformersMap {
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return newSpecificInformersMap(config, scheme, mapper, resync, namespace, createUnstructuredListWatch)
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}
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