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factory.go
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factory.go
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/*
Copyright 2015 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.
*/
package informers
import (
"reflect"
"sync"
"time"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/client/cache"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
)
// SharedInformerFactory provides interface which holds unique informers for pods, nodes, namespaces, persistent volume
// claims and persistent volumes
type SharedInformerFactory interface {
// Start starts informers that can start AFTER the API server and controllers have started
Start(stopCh <-chan struct{})
ForResource(unversioned.GroupResource) (GenericInformer, error)
// when you update these, update generic.go/ForResource, same package
Pods() PodInformer
LimitRanges() LimitRangeInformer
Namespaces() NamespaceInformer
Nodes() NodeInformer
PersistentVolumeClaims() PVCInformer
PersistentVolumes() PVInformer
ServiceAccounts() ServiceAccountInformer
DaemonSets() DaemonSetInformer
Deployments() DeploymentInformer
ReplicaSets() ReplicaSetInformer
ClusterRoleBindings() ClusterRoleBindingInformer
ClusterRoles() ClusterRoleInformer
RoleBindings() RoleBindingInformer
Roles() RoleInformer
StorageClasses() StorageClassInformer
Jobs() JobInformer
}
type sharedInformerFactory struct {
client clientset.Interface
lock sync.Mutex
defaultResync time.Duration
informers map[reflect.Type]cache.SharedIndexInformer
// startedInformers is used for tracking which informers have been started
// this allows calling of Start method multiple times
startedInformers map[reflect.Type]bool
}
// NewSharedInformerFactory constructs a new instance of sharedInformerFactory
func NewSharedInformerFactory(client clientset.Interface, defaultResync time.Duration) SharedInformerFactory {
return &sharedInformerFactory{
client: client,
defaultResync: defaultResync,
informers: make(map[reflect.Type]cache.SharedIndexInformer),
startedInformers: make(map[reflect.Type]bool),
}
}
// Start initializes all requested informers.
func (f *sharedInformerFactory) Start(stopCh <-chan struct{}) {
f.lock.Lock()
defer f.lock.Unlock()
for informerType, informer := range f.informers {
if !f.startedInformers[informerType] {
go informer.Run(stopCh)
f.startedInformers[informerType] = true
}
}
}
// Pods returns a SharedIndexInformer that lists and watches all pods
func (f *sharedInformerFactory) Pods() PodInformer {
return &podInformer{sharedInformerFactory: f}
}
// Nodes returns a SharedIndexInformer that lists and watches all nodes
func (f *sharedInformerFactory) Nodes() NodeInformer {
return &nodeInformer{sharedInformerFactory: f}
}
// Namespaces returns a SharedIndexInformer that lists and watches all namespaces
func (f *sharedInformerFactory) Namespaces() NamespaceInformer {
return &namespaceInformer{sharedInformerFactory: f}
}
// PersistentVolumeClaims returns a SharedIndexInformer that lists and watches all persistent volume claims
func (f *sharedInformerFactory) PersistentVolumeClaims() PVCInformer {
return &pvcInformer{sharedInformerFactory: f}
}
// PersistentVolumes returns a SharedIndexInformer that lists and watches all persistent volumes
func (f *sharedInformerFactory) PersistentVolumes() PVInformer {
return &pvInformer{sharedInformerFactory: f}
}
// ServiceAccounts returns a SharedIndexInformer that lists and watches all service accounts.
func (f *sharedInformerFactory) ServiceAccounts() ServiceAccountInformer {
return &serviceAccountInformer{sharedInformerFactory: f}
}
// DaemonSets returns a SharedIndexInformer that lists and watches all daemon sets.
func (f *sharedInformerFactory) DaemonSets() DaemonSetInformer {
return &daemonSetInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) Deployments() DeploymentInformer {
return &deploymentInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) ReplicaSets() ReplicaSetInformer {
return &replicaSetInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) ClusterRoles() ClusterRoleInformer {
return &clusterRoleInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) ClusterRoleBindings() ClusterRoleBindingInformer {
return &clusterRoleBindingInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) Roles() RoleInformer {
return &roleInformer{sharedInformerFactory: f}
}
func (f *sharedInformerFactory) RoleBindings() RoleBindingInformer {
return &roleBindingInformer{sharedInformerFactory: f}
}
// LimitRanges returns a SharedIndexInformer that lists and watches all limit ranges.
func (f *sharedInformerFactory) LimitRanges() LimitRangeInformer {
return &limitRangeInformer{sharedInformerFactory: f}
}
// StorageClasses returns a SharedIndexInformer that lists and watches all storage classes
func (f *sharedInformerFactory) StorageClasses() StorageClassInformer {
return &storageClassInformer{sharedInformerFactory: f}
}
// Jobs returns a SharedIndexInformer that lists and watches all storage jobs
func (f *sharedInformerFactory) Jobs() JobInformer {
return &jobInformer{sharedInformerFactory: f}
}