mirrors/ceph-csi
1
0
Fork 0
mirror of https://github.com/ceph/ceph-csi.git synced 2025-06-13 10:33:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add method comments

Browse Source 
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
This commit is contained in:
Madhu Rajanna
2019-01-28 17:17:06 +05:30
parent 6929db10e5
commit 25642fe404
12 changed files with 95 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
pkg/util/cachepersister.go
View File

@ -23,11 +23,14 @@ import (
)
const (
//PluginFolder defines location of plugins
PluginFolder = "/var/lib/kubelet/plugins"
)
// ForAllFunc stores metdata with identifier
type ForAllFunc func(identifier string) error
// CachePersister interface implemented for store
type CachePersister interface {
Create(identifier string, data interface{}) error
Get(identifier string, data interface{}) error
@ -35,6 +38,7 @@ type CachePersister interface {
Delete(identifier string) error
}
// NewCachePersister returns CachePersister based on store
func NewCachePersister(metadataStore, driverName string) (CachePersister, error) {
if metadataStore == "k8s_configmap" {
glog.Infof("cache-perister: using kubernetes configmap as metadata cache persister")

8
pkg/util/k8scmcache.go
View File

@ -33,6 +33,7 @@ import (
"k8s.io/client-go/tools/clientcmd"
)
// K8sCMCache to store metadata
type K8sCMCache struct {
Client *k8s.Clientset
Namespace string
@ -47,6 +48,8 @@ const (
csiMetadataLabelAttr = "com.ceph.ceph-csi/metadata"
)
// GetK8sNamespace returns pod namespace. if pod namespace is empty
// it returns default namespace
func GetK8sNamespace() string {
namespace := os.Getenv("POD_NAMESPACE")
if namespace == "" {
@ -55,6 +58,7 @@ func GetK8sNamespace() string {
return namespace
}
// NewK8sClient create kubernetes client
func NewK8sClient() *k8s.Clientset {
var cfg *rest.Config
var err error
@ -88,6 +92,7 @@ func (k8scm *K8sCMCache) getMetadataCM(resourceID string) (*v1.ConfigMap, error)
return cm, nil
}
//ForAll list the metadata in configmaps and filters outs based on the pattern
func (k8scm *K8sCMCache) ForAll(pattern string, destObj interface{}, f ForAllFunc) error {
listOpts := metav1.ListOptions{LabelSelector: fmt.Sprintf("%s=%s", csiMetadataLabelAttr, cmLabel)}
cms, err := k8scm.Client.CoreV1().ConfigMaps(k8scm.Namespace).List(listOpts)
@ -114,6 +119,7 @@ func (k8scm *K8sCMCache) ForAll(pattern string, destObj interface{}, f ForAllFun
return nil
}
// Create stores the metadata in configmaps with identifier name
func (k8scm *K8sCMCache) Create(identifier string, data interface{}) error {
cm, err := k8scm.getMetadataCM(identifier)
if cm != nil && err == nil {
@ -149,6 +155,7 @@ func (k8scm *K8sCMCache) Create(identifier string, data interface{}) error {
return nil
}
// Get retrieves the metadata in configmaps with identifier name
func (k8scm *K8sCMCache) Get(identifier string, data interface{}) error {
cm, err := k8scm.getMetadataCM(identifier)
if err != nil {
@ -161,6 +168,7 @@ func (k8scm *K8sCMCache) Get(identifier string, data interface{}) error {
return nil
}
// Delete deletes the metadata in configmaps with identifier name
func (k8scm *K8sCMCache) Delete(identifier string) error {
err := k8scm.Client.CoreV1().ConfigMaps(k8scm.Namespace).Delete(identifier, nil)
if err != nil {

6
pkg/util/nodecache.go
View File

@ -29,12 +29,14 @@ import (
"github.com/pkg/errors"
)
// NodeCache to store metadata
type NodeCache struct {
BasePath string
}
var cacheDir = "controller"
// EnsureCacheDirectory creates cache directory if not present
func (nc *NodeCache) EnsureCacheDirectory(cacheDir string) error {
fullPath := path.Join(nc.BasePath, cacheDir)
if _, err := os.Stat(fullPath); os.IsNotExist(err) {
@ -45,6 +47,7 @@ func (nc *NodeCache) EnsureCacheDirectory(cacheDir string) error {
return nil
}
//ForAll list the metadata in Nodecache and filters outs based on the pattern
func (nc *NodeCache) ForAll(pattern string, destObj interface{}, f ForAllFunc) error {
err := nc.EnsureCacheDirectory(cacheDir)
if err != nil {
@ -80,6 +83,7 @@ func (nc *NodeCache) ForAll(pattern string, destObj interface{}, f ForAllFunc) e
return nil
}
// Create creates the metadata file in cache directory with identifier name
func (nc *NodeCache) Create(identifier string, data interface{}) error {
file := path.Join(nc.BasePath, cacheDir, identifier+".json")
fp, err := os.Create(file)
@ -95,6 +99,7 @@ func (nc *NodeCache) Create(identifier string, data interface{}) error {
return nil
}
// Get retrieves the metadata from cache directory with identifier name
func (nc *NodeCache) Get(identifier string, data interface{}) error {
file := path.Join(nc.BasePath, cacheDir, identifier+".json")
fp, err := os.Open(file)
@ -111,6 +116,7 @@ func (nc *NodeCache) Get(identifier string, data interface{}) error {
return nil
}
// Delete deletes the metadata file from cache directory with identifier name
func (nc *NodeCache) Delete(identifier string) error {
file := path.Join(nc.BasePath, cacheDir, identifier+".json")
err := os.Remove(file)