tianxiaoliang commented on a change in pull request #787:
URL: 
https://github.com/apache/servicecomb-service-center/pull/787#discussion_r550090218



##########
File path: server/service/gov/mock/mock.go
##########
@@ -32,36 +34,87 @@ type Distributor struct {
        name       string
 }
 
-func (d *Distributor) Create(kind, project string, spec []byte) error {
+const MatchGroup = "match-group"
+
+var PolicyNames = []string{"retry", "rateLimiting", "circuitBreaker", 
"bulkhead"}
+
+func (d *Distributor) Create(kind, project string, spec []byte) ([]byte, 
error) {
        p := &gov.Policy{}
        err := json.Unmarshal(spec, p)
+       p.ID = uuid.NewV4().String()
+       p.Kind = kind
        log.Println(fmt.Sprintf("create %v", &p))
-       d.lbPolicies[p.GovernancePolicy.Name] = p
-       return err
+       d.lbPolicies[p.GovernancePolicy.ID] = p
+       return []byte(p.ID), err
 }
+
 func (d *Distributor) Update(id, kind, project string, spec []byte) error {
+       if d.lbPolicies[id] == nil {
+               return fmt.Errorf("id not exsit")
+       }
        p := &gov.Policy{}
        err := json.Unmarshal(spec, p)
+       p.ID = id
+       p.Kind = kind
        log.Println("update ", p)
-       d.lbPolicies[p.GovernancePolicy.Name] = p
+       d.lbPolicies[p.GovernancePolicy.ID] = p
        return err
 }
+
 func (d *Distributor) Delete(id, project string) error {
        delete(d.lbPolicies, id)
        return nil
 }
+
+func (d *Distributor) Display(project, app, env string) ([]byte, error) {
+       list := make([]*gov.Policy, 0)
+       for _, g := range d.lbPolicies {
+               if g.Kind == MatchGroup && g.Selector.App == app && 
g.Selector.Environment == env {
+                       list = append(list, g)
+               }
+       }
+       policyMap := make(map[string]*gov.Policy)
+       for _, g := range d.lbPolicies {
+               for _, kind := range PolicyNames {
+                       if g.Kind == kind && g.Selector.App == app && 
g.Selector.Environment == env {

Review comment:
       79 72 可以抽取




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