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feat: add a CustomMetricsProvider to the metrics-adapter
Signed-off-by: chaunceyjiang <chaunceyjiang@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package multiclient | ||
|
|
||
| import ( | ||
| "sync" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/client-go/discovery" | ||
| "k8s.io/client-go/informers" | ||
| listcorev1 "k8s.io/client-go/listers/core/v1" | ||
|
|
||
| clusterV1alpha1 "github.com/karmada-io/karmada/pkg/apis/cluster/v1alpha1" | ||
| clusterlister "github.com/karmada-io/karmada/pkg/generated/listers/cluster/v1alpha1" | ||
| "github.com/karmada-io/karmada/pkg/util" | ||
| ) | ||
|
|
||
| // MultiClusterDiscoveryInterface DiscoveryInterface for multiple clusters. | ||
| type MultiClusterDiscoveryInterface interface { | ||
| Get(clusterName string) *discovery.DiscoveryClient | ||
| Set(clusterName string) error | ||
| Remove(clusterName string) | ||
| } | ||
|
|
||
| // MultiClusterDiscovery provide DiscoveryClient for multiple clusters. | ||
| type MultiClusterDiscovery struct { | ||
| sync.RWMutex | ||
| clients map[string]*discovery.DiscoveryClient | ||
| secretLister listcorev1.SecretLister | ||
| clusterLister clusterlister.ClusterLister | ||
| } | ||
|
|
||
| // NewMultiClusterDiscoveryClient return a new MultiClusterDiscovery | ||
| func NewMultiClusterDiscoveryClient(clusterLister clusterlister.ClusterLister, KubeFactory informers.SharedInformerFactory) MultiClusterDiscoveryInterface { | ||
| return &MultiClusterDiscovery{ | ||
| clusterLister: clusterLister, | ||
| secretLister: KubeFactory.Core().V1().Secrets().Lister(), | ||
| clients: map[string]*discovery.DiscoveryClient{}, | ||
| } | ||
| } | ||
|
|
||
| // Get returns a DiscoveryClient for the provided clusterName. | ||
| func (m *MultiClusterDiscovery) Get(clusterName string) *discovery.DiscoveryClient { | ||
| m.RLock() | ||
| defer m.RUnlock() | ||
| return m.clients[clusterName] | ||
| } | ||
|
|
||
| // Set a DiscoveryClient for the provided clusterName. | ||
| func (m *MultiClusterDiscovery) Set(clusterName string) error { | ||
| clusterGetter := func(cluster string) (*clusterV1alpha1.Cluster, error) { | ||
| return m.clusterLister.Get(cluster) | ||
| } | ||
| secretGetter := func(namespace string, name string) (*corev1.Secret, error) { | ||
| return m.secretLister.Secrets(namespace).Get(name) | ||
| } | ||
| clusterConfig, err := util.BuildClusterConfig(clusterName, clusterGetter, secretGetter) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| m.Lock() | ||
| defer m.Unlock() | ||
| m.clients[clusterName] = discovery.NewDiscoveryClientForConfigOrDie(clusterConfig) | ||
| return nil | ||
| } | ||
|
|
||
| // Remove a DiscoveryClient for the provided clusterName. | ||
| func (m *MultiClusterDiscovery) Remove(clusterName string) { | ||
| m.Lock() | ||
| defer m.Unlock() | ||
| delete(m.clients, clusterName) | ||
| } |
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