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admission: cleanup admission

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This commit is contained in:
Xiang Li 2015-02-19 22:25:52 -08:00
parent 984fb2e675
commit 041c0a6f2b
2 changed files with 14 additions and 10 deletions
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5
pkg/admission/chain.go
View File

@ -23,7 +23,8 @@ import (
// chainAdmissionHandler is an instance of admission.Interface that performs admission control using a chain of admission handlers // chainAdmissionHandler is an instance of admission.Interface that performs admission control using a chain of admission handlers
type chainAdmissionHandler []Interface type chainAdmissionHandler []Interface
// New returns an admission.Interface that will enforce admission control decisions // NewFromPlugins returns an admission.Interface that will enforce admission control decisions of all
// the given plugins.
func NewFromPlugins(client client.Interface, pluginNames []string, configFilePath string) Interface { func NewFromPlugins(client client.Interface, pluginNames []string, configFilePath string) Interface {
plugins := []Interface{} plugins := []Interface{}
for _, pluginName := range pluginNames { for _, pluginName := range pluginNames {
@ -36,7 +37,7 @@ func NewFromPlugins(client client.Interface, pluginNames []string, configFilePat
} }
// Admit performs an admission control check using a chain of handlers, and returns immediately on first error // Admit performs an admission control check using a chain of handlers, and returns immediately on first error
func (admissionHandler chainAdmissionHandler) Admit(a Attributes) (err error) { func (admissionHandler chainAdmissionHandler) Admit(a Attributes) error {
for _, handler := range admissionHandler { for _, handler := range admissionHandler {
err := handler.Admit(a) err := handler.Admit(a)
if err != nil { if err != nil {

19
pkg/admission/plugins.go
View File

@ -25,15 +25,17 @@ import (
"github.com/golang/glog" "github.com/golang/glog"
) )
// Factory is a function that returns a Interface for admission decisions. // Factory is a function that returns an Interface for admission decisions.
// The config parameter provides an io.Reader handler to the factory in // The config parameter provides an io.Reader handler to the factory in
// order to load specific configurations. If no configuration is provided // order to load specific configurations. If no configuration is provided
// the parameter is nil. // the parameter is nil.
type Factory func(client client.Interface, config io.Reader) (Interface, error) type Factory func(client client.Interface, config io.Reader) (Interface, error)
// All registered admission options. // All registered admission options.
var pluginsMutex sync.Mutex var (
var plugins = make(map[string]Factory) pluginsMutex sync.Mutex
plugins = make(map[string]Factory)
)
// GetPlugins enumerates the // GetPlugins enumerates the
func GetPlugins() []string { func GetPlugins() []string {
@ -59,7 +61,7 @@ func RegisterPlugin(name string, plugin Factory) {
plugins[name] = plugin plugins[name] = plugin
} }
// GetInterface creates an instance of the named plugin, or nil if // GetPlugin creates an instance of the named plugin, or nil if
// the name is not known. The error return is only used if the named provider // the name is not known. The error return is only used if the named provider
// was known but failed to initialize. The config parameter specifies the // was known but failed to initialize. The config parameter specifies the
// io.Reader handler of the configuration file for the cloud provider, or nil // io.Reader handler of the configuration file for the cloud provider, or nil
@ -74,9 +76,12 @@ func GetPlugin(name string, client client.Interface, config io.Reader) (Interfac
return f(client, config) return f(client, config)
} }
// InitPlugin creates an instance of the named interface // InitPlugin creates an instance of the named interface.
func InitPlugin(name string, client client.Interface, configFilePath string) Interface { func InitPlugin(name string, client client.Interface, configFilePath string) Interface {
var config *os.File var (
config *os.File
err error
)
if name == "" { if name == "" {
glog.Info("No admission plugin specified.") glog.Info("No admission plugin specified.")
@ -84,8 +89,6 @@ func InitPlugin(name string, client client.Interface, configFilePath string) Int
} }
if configFilePath != "" { if configFilePath != "" {
var err error
config, err = os.Open(configFilePath) config, err = os.Open(configFilePath)
if err != nil { if err != nil {
glog.Fatalf("Couldn't open admission plugin configuration %s: %#v", glog.Fatalf("Couldn't open admission plugin configuration %s: %#v",