mcs: change the get member return value

client/http/interface.go

@@ -91,7 +91,7 @@ type Client interface {
 	GetMinResolvedTSByStoresIDs(context.Context, []uint64) (uint64, map[uint64]uint64, error)
 	GetPDVersion(context.Context) (string, error)
 	/* Micro Service interfaces */
-	GetMicroServiceMembers(context.Context, string) ([]string, error)
+	GetMicroServiceMembers(context.Context, string) ([]MicroServiceMember, error)
 	GetMicroServicePrimary(context.Context, string) (string, error)
 	DeleteOperators(context.Context) error
 
@@ -856,8 +856,8 @@ func (c *client) GetMinResolvedTSByStoresIDs(ctx context.Context, storeIDs []uin
 }
 
 // GetMicroServiceMembers gets the members of the microservice.
-func (c *client) GetMicroServiceMembers(ctx context.Context, service string) ([]string, error) {
-	var members []string
+func (c *client) GetMicroServiceMembers(ctx context.Context, service string) ([]MicroServiceMember, error) {
+	var members []MicroServiceMember
 	err := c.request(ctx, newRequestInfo().
 		WithName(getMicroServiceMembersName).
 		WithURI(MicroServiceMembers(service)).

client/http/types.go

@@ -592,3 +592,12 @@ type MembersInfo struct {
 	Leader     *pdpb.Member         `json:"leader,omitempty"`
 	EtcdLeader *pdpb.Member         `json:"etcd_leader,omitempty"`
 }
+
+// MicroServiceMember is the member info of a micro service.
+type MicroServiceMember struct {
+	ServiceAddr    string `json:"service-addr"`
+	Version        string `json:"version"`
+	GitHash        string `json:"git-hash"`
+	DeployPath     string `json:"deploy-path"`
+	StartTimestamp int64  `json:"start-timestamp"`
+}

pkg/mcs/discovery/discover.go

@@ -45,7 +45,7 @@ func Discover(cli *clientv3.Client, clusterID, serviceName string) ([]string, er
 }
 
 // GetMSMembers returns all the members of the specified service name.
-func GetMSMembers(name string, client *clientv3.Client) ([]string, error) {
+func GetMSMembers(name string, client *clientv3.Client) ([]ServiceRegistryEntry, error) {
 	switch name {
 	case utils.TSOServiceName, utils.SchedulingServiceName, utils.ResourceManagerServiceName:
 		clusterID, err := etcdutil.GetClusterID(client, utils.ClusterIDPath)
@@ -61,18 +61,18 @@ func GetMSMembers(name string, client *clientv3.Client) ([]string, error) {
 			return nil, errs.ErrEtcdTxnConflict.FastGenByArgs()
 		}
 
-		var addrs []string
+		var entries []ServiceRegistryEntry
 		for _, resp := range resps.Responses {
 			for _, keyValue := range resp.GetResponseRange().GetKvs() {
 				var entry ServiceRegistryEntry
 				if err = entry.Deserialize(keyValue.Value); err != nil {
 					log.Error("try to deserialize service registry entry failed", zap.String("key", string(keyValue.Key)), zap.Error(err))
 					continue
 				}
-				addrs = append(addrs, entry.ServiceAddr)
+				entries = append(entries, entry)
 			}
 		}
-		return addrs, nil
+		return entries, nil
 	}
 
 	return nil, errors.Errorf("unknown service name %s", name)

pkg/mcs/discovery/registry_entry.go

@@ -23,7 +23,11 @@ import (
 
 // ServiceRegistryEntry is the registry entry of a service
 type ServiceRegistryEntry struct {
-	ServiceAddr string `json:"service-addr"`
+	ServiceAddr    string `json:"service-addr"`
+	Version        string `json:"version"`
+	GitHash        string `json:"git-hash"`
+	DeployPath     string `json:"deploy-path"`
+	StartTimestamp int64  `json:"start-timestamp"`
 }
 
 // Serialize this service registry entry

pkg/mcs/scheduling/server/server.go

@@ -413,7 +413,17 @@ func (s *Server) startServer() (err error) {
 	// different service modes provided by the same pd-server binary
 	bs.ServerInfoGauge.WithLabelValues(versioninfo.PDReleaseVersion, versioninfo.PDGitHash).Set(float64(time.Now().Unix()))
 	bs.ServerMaxProcsGauge.Set(float64(runtime.GOMAXPROCS(0)))
-	s.serviceID = &discovery.ServiceRegistryEntry{ServiceAddr: s.cfg.AdvertiseListenAddr}
+	deployPath, err := os.Executable()
+	if err != nil {
+		deployPath = ""
+	}
+	s.serviceID = &discovery.ServiceRegistryEntry{
+		ServiceAddr:    s.cfg.AdvertiseListenAddr,
+		Version:        versioninfo.PDReleaseVersion,
+		GitHash:        versioninfo.PDGitHash,
+		DeployPath:     deployPath,
+		StartTimestamp: s.StartTimestamp(),
+	}
 	uniqueName := s.cfg.GetAdvertiseListenAddr()
 	uniqueID := memberutil.GenerateUniqueID(uniqueName)
 	log.Info("joining primary election", zap.String("participant-name", uniqueName), zap.Uint64("participant-id", uniqueID))

pkg/mcs/tso/server/server.go

@@ -368,7 +368,17 @@ func (s *Server) startServer() (err error) {
 	s.serverLoopCtx, s.serverLoopCancel = context.WithCancel(s.Context())
 	legacySvcRootPath := endpoint.LegacyRootPath(s.clusterID)
 	tsoSvcRootPath := endpoint.TSOSvcRootPath(s.clusterID)
-	s.serviceID = &discovery.ServiceRegistryEntry{ServiceAddr: s.cfg.AdvertiseListenAddr}
+	deployPath, err := os.Executable()
+	if err != nil {
+		deployPath = ""
+	}
+	s.serviceID = &discovery.ServiceRegistryEntry{
+		ServiceAddr:    s.cfg.AdvertiseListenAddr,
+		Version:        versioninfo.PDReleaseVersion,
+		GitHash:        versioninfo.PDGitHash,
+		DeployPath:     deployPath,
+		StartTimestamp: s.StartTimestamp(),
+	}
 	s.keyspaceGroupManager = tso.NewKeyspaceGroupManager(
 		s.serverLoopCtx, s.serviceID, s.GetClient(), s.GetHTTPClient(), s.cfg.AdvertiseListenAddr,
 		discovery.TSOPath(s.clusterID), legacySvcRootPath, tsoSvcRootPath, s.cfg)

server/apiv2/handlers/micro_service.go

@@ -35,7 +35,7 @@ func RegisterMicroService(r *gin.RouterGroup) {
 // @Tags     members
 // @Summary  Get all members of the cluster for the specified service.
 // @Produce  json
-// @Success  200  {object}  []string
+// @Success  200  {object}  []discovery.ServiceRegistryEntry
 // @Router   /ms/members/{service} [get]
 func GetMembers(c *gin.Context) {
 	svr := c.MustGet(middlewares.ServerContextKey).(*server.Server)
@@ -45,12 +45,12 @@ func GetMembers(c *gin.Context) {
 	}
 
 	if service := c.Param("service"); len(service) > 0 {
-		addrs, err := discovery.GetMSMembers(service, svr.GetClient())
+		entries, err := discovery.GetMSMembers(service, svr.GetClient())
 		if err != nil {
 			c.AbortWithStatusJSON(http.StatusInternalServerError, err.Error())
 			return
 		}
-		c.IndentedJSON(http.StatusOK, addrs)
+		c.IndentedJSON(http.StatusOK, entries)
 		return
 	}