/
memberlist_store.go
96 lines (84 loc) · 3.08 KB
/
memberlist_store.go
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package memberlist_manager
import (
"context"
"github.com/pingcap/log"
"go.uber.org/zap"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
)
type IMemberlistStore interface {
GetMemberlist(ctx context.Context) (return_memberlist *Memberlist, resourceVersion string, err error)
UpdateMemberlist(ctx context.Context, memberlist *Memberlist, resourceVersion string) error
}
type Memberlist []string
type CRMemberlistStore struct {
dynamicClient dynamic.Interface
coordinatorNamespace string
memberlistCustomResource string
}
func NewCRMemberlistStore(dynamicClient dynamic.Interface, coordinatorNamespace string, memberlistCustomResource string) *CRMemberlistStore {
return &CRMemberlistStore{
dynamicClient: dynamicClient,
coordinatorNamespace: coordinatorNamespace,
memberlistCustomResource: memberlistCustomResource,
}
}
func (s *CRMemberlistStore) GetMemberlist(ctx context.Context) (return_memberlist *Memberlist, resourceVersion string, err error) {
gvr := getGvr()
unstrucuted, err := s.dynamicClient.Resource(gvr).Namespace(s.coordinatorNamespace).Get(ctx, s.memberlistCustomResource, metav1.GetOptions{})
if err != nil {
return nil, "", err
}
cr := unstrucuted.UnstructuredContent()
members := cr["spec"].(map[string]interface{})["members"]
memberlist := Memberlist{}
if members == nil {
// Empty memberlist
return &memberlist, unstrucuted.GetResourceVersion(), nil
}
cast_members := members.([]interface{})
for _, member := range cast_members {
member_map := member.(map[string]interface{})
memberlist = append(memberlist, member_map["url"].(string))
}
return &memberlist, unstrucuted.GetResourceVersion(), nil
}
func (s *CRMemberlistStore) UpdateMemberlist(ctx context.Context, memberlist *Memberlist, resourceVersion string) error {
gvr := getGvr()
log.Info("Updating memberlist store", zap.Any("memberlist", memberlist))
unstructured := memberlistToCr(memberlist, s.coordinatorNamespace, s.memberlistCustomResource, resourceVersion)
_, err := s.dynamicClient.Resource(gvr).Namespace("chroma").Update(context.TODO(), unstructured, metav1.UpdateOptions{})
if err != nil {
return err
}
return nil
}
func getGvr() schema.GroupVersionResource {
gvr := schema.GroupVersionResource{Group: "chroma.cluster", Version: "v1", Resource: "memberlists"}
return gvr
}
func memberlistToCr(memberlist *Memberlist, namespace string, memberlistName string, resourceVersion string) *unstructured.Unstructured {
members := []interface{}{}
for _, member := range *memberlist {
members = append(members, map[string]interface{}{
"url": member,
})
}
resource := &unstructured.Unstructured{
Object: map[string]interface{}{
"apiVersion": "chroma.cluster/v1",
"kind": "MemberList",
"metadata": map[string]interface{}{
"name": memberlistName,
"namespace": namespace,
"resourceVersion": resourceVersion,
},
"spec": map[string]interface{}{
"members": members,
},
},
}
return resource
}