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Merge pull request #101 from shawn-hurley/unstructured
Adding ability for clients, cache and watcher to work with unstructured
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/* | ||
Copyright 2018 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. | ||
*/ | ||
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package internal | ||
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import ( | ||
"time" | ||
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"k8s.io/apimachinery/pkg/api/meta" | ||
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
"k8s.io/apimachinery/pkg/runtime" | ||
"k8s.io/apimachinery/pkg/runtime/schema" | ||
"k8s.io/client-go/rest" | ||
"k8s.io/client-go/tools/cache" | ||
) | ||
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// InformersMap create and caches Informers for (runtime.Object, schema.GroupVersionKind) pairs. | ||
// It uses a standard parameter codec constructed based on the given generated Scheme. | ||
type InformersMap struct { | ||
// we abstract over the details of structured vs unstructured with the specificInformerMaps | ||
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structured *specificInformersMap | ||
unstructured *specificInformersMap | ||
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// Scheme maps runtime.Objects to GroupVersionKinds | ||
Scheme *runtime.Scheme | ||
} | ||
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// NewInformersMap creates a new InformersMap that can create informers for | ||
// both structured and unstructured objects. | ||
func NewInformersMap(config *rest.Config, | ||
scheme *runtime.Scheme, | ||
mapper meta.RESTMapper, | ||
resync time.Duration) *InformersMap { | ||
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return &InformersMap{ | ||
structured: newStructuredInformersMap(config, scheme, mapper, resync), | ||
unstructured: newUnstructuredInformersMap(config, scheme, mapper, resync), | ||
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Scheme: scheme, | ||
} | ||
} | ||
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// Start calls Run on each of the informers and sets started to true. Blocks on the stop channel. | ||
func (m *InformersMap) Start(stop <-chan struct{}) error { | ||
go m.structured.Start(stop) | ||
go m.unstructured.Start(stop) | ||
<-stop | ||
return nil | ||
} | ||
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// WaitForCacheSync waits until all the caches have been synced. | ||
func (m *InformersMap) WaitForCacheSync(stop <-chan struct{}) bool { | ||
syncedFuncs := append([]cache.InformerSynced(nil), m.structured.HasSyncedFuncs()...) | ||
syncedFuncs = append(syncedFuncs, m.unstructured.HasSyncedFuncs()...) | ||
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return cache.WaitForCacheSync(stop, syncedFuncs...) | ||
} | ||
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// Get will create a new Informer and add it to the map of InformersMap if none exists. Returns | ||
// the Informer from the map. | ||
func (m *InformersMap) Get(gvk schema.GroupVersionKind, obj runtime.Object) (*MapEntry, error) { | ||
_, isUnstructured := obj.(*unstructured.Unstructured) | ||
_, isUnstructuredList := obj.(*unstructured.UnstructuredList) | ||
isUnstructured = isUnstructured || isUnstructuredList | ||
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if isUnstructured { | ||
return m.unstructured.Get(gvk, obj) | ||
} | ||
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return m.structured.Get(gvk, obj) | ||
} | ||
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// newStructuredInformersMap creates a new InformersMap for structured objects. | ||
func newStructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration) *specificInformersMap { | ||
return newSpecificInformersMap(config, scheme, mapper, resync, createStructuredListWatch) | ||
} | ||
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// newUnstructuredInformersMap creates a new InformersMap for unstructured objects. | ||
func newUnstructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration) *specificInformersMap { | ||
return newSpecificInformersMap(config, scheme, mapper, resync, createUnstructuredListWatch) | ||
} |
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