Golang Store.List方法代码示例

// purgeDeletedNamespaces will remove all namespaces enumerated in a reviewRecordStore that are not in the namespace set
func purgeDeletedNamespaces(namespaceSet *sets.String, userSubjectRecordStore cache.Store, groupSubjectRecordStore cache.Store, reviewRecordStore cache.Store) {
	reviewRecordItems := reviewRecordStore.List()
	for i := range reviewRecordItems {
		reviewRecord := reviewRecordItems[i].(*reviewRecord)
		if !namespaceSet.Has(reviewRecord.namespace) {
			deleteNamespaceFromSubjects(userSubjectRecordStore, reviewRecord.users, reviewRecord.namespace)
			deleteNamespaceFromSubjects(groupSubjectRecordStore, reviewRecord.groups, reviewRecord.namespace)
			reviewRecordStore.Delete(reviewRecord)
		}
	}
}

// getMatchingPolicies returns policies from the store.  For now this returns everything
// in the future it can filter based on UserInfo and permissions.
func getMatchingPolicies(store cache.Store, user user.Info, sa user.Info) ([]*extensions.PodSecurityPolicy, error) {
	matchedPolicies := make([]*extensions.PodSecurityPolicy, 0)

	for _, c := range store.List() {
		constraint, ok := c.(*extensions.PodSecurityPolicy)
		if !ok {
			return nil, errors.NewInternalError(fmt.Errorf("error converting object from store to a pod security policy: %v", c))
		}
		matchedPolicies = append(matchedPolicies, constraint)
	}

	return matchedPolicies, nil
}

// purgeDeletedNamespaces will remove all namespaces enumerated in a reviewRecordStore that are not in the namespace set
func (ac *AuthorizationCache) purgeDeletedNamespaces(oldNamespaces, newNamespaces sets.String, userSubjectRecordStore cache.Store, groupSubjectRecordStore cache.Store, reviewRecordStore cache.Store) {
	reviewRecordItems := reviewRecordStore.List()
	for i := range reviewRecordItems {
		reviewRecord := reviewRecordItems[i].(*reviewRecord)
		if !newNamespaces.Has(reviewRecord.namespace) {
			deleteNamespaceFromSubjects(userSubjectRecordStore, reviewRecord.users, reviewRecord.namespace)
			deleteNamespaceFromSubjects(groupSubjectRecordStore, reviewRecord.groups, reviewRecord.namespace)
			reviewRecordStore.Delete(reviewRecord)
		}
	}

	for namespace := range oldNamespaces.Difference(newNamespaces) {
		ac.notifyWatchers(namespace, nil, sets.String{}, sets.String{})
	}
}

// getMatchingSecurityContextConstraints returns constraints from the store that match the group,
// uid, or user of the service account.
func getMatchingSecurityContextConstraints(store cache.Store, userInfo user.Info) ([]*kapi.SecurityContextConstraints, error) {
	matchedConstraints := make([]*kapi.SecurityContextConstraints, 0)

	for _, c := range store.List() {
		constraint, ok := c.(*kapi.SecurityContextConstraints)
		if !ok {
			return nil, errors.NewInternalError(fmt.Errorf("error converting object from store to a security context constraint: %v", c))
		}
		if ConstraintAppliesTo(constraint, userInfo) {
			matchedConstraints = append(matchedConstraints, constraint)
		}
	}

	return matchedConstraints, nil
}

// initializeCaches fills all controller caches with initial data from etcd in
// order to have the caches already filled when first addClaim/addVolume to
// perform initial synchronization of the controller.
func (ctrl *PersistentVolumeController) initializeCaches(volumeStore cache.Store, claimSource cache.ListerWatcher) {
	volumeList := volumeStore.List()
	for _, obj := range volumeList {
		volume, ok := obj.(*api.PersistentVolume)
		if !ok {
			glog.Errorf("PersistentVolumeController can't initialize caches, expected list of volumes, got: %#v", obj)
		}
		// Ignore template volumes from kubernetes 1.2
		deleted := ctrl.upgradeVolumeFrom1_2(volume)
		if !deleted {
			clone, err := conversion.NewCloner().DeepCopy(volume)
			if err != nil {
				glog.Errorf("error cloning volume %q: %v", volume.Name, err)
				continue
			}
			volumeClone := clone.(*api.PersistentVolume)
			ctrl.storeVolumeUpdate(volumeClone)
		}
	}

	claimListObj, err := claimSource.List(api.ListOptions{})
	if err != nil {
		glog.Errorf("PersistentVolumeController can't initialize caches: %v", err)
		return
	}
	claimList, ok := claimListObj.(*api.PersistentVolumeClaimList)
	if !ok {
		glog.Errorf("PersistentVolumeController can't initialize caches, expected list of claims, got: %#v", claimListObj)
		return
	}
	for _, claim := range claimList.Items {
		clone, err := conversion.NewCloner().DeepCopy(&claim)
		if err != nil {
			glog.Errorf("error cloning claim %q: %v", claimToClaimKey(&claim), err)
			continue
		}
		claimClone := clone.(*api.PersistentVolumeClaim)
		ctrl.storeClaimUpdate(claimClone)
	}
	glog.V(4).Infof("controller initialized")
}

// getDefaultClass returns the default StorageClass from the store, or nil.
func getDefaultClass(store cache.Store) (*storage.StorageClass, error) {
	defaultClasses := []*storage.StorageClass{}
	for _, c := range store.List() {
		class, ok := c.(*storage.StorageClass)
		if !ok {
			return nil, errors.NewInternalError(fmt.Errorf("error converting stored object to StorageClass: %v", c))
		}
		if class.Annotations[isDefaultAnnotation] == "true" {
			defaultClasses = append(defaultClasses, class)
			glog.V(4).Infof("getDefaultClass added: %s", class.Name)
		}
	}

	if len(defaultClasses) == 0 {
		return nil, nil
	}
	if len(defaultClasses) > 1 {
		glog.V(4).Infof("getDefaultClass %s defaults found", len(defaultClasses))
		return nil, errors.NewInternalError(fmt.Errorf("%d default StorageClasses were found", len(defaultClasses)))
	}
	return defaultClasses[0], nil
}