/
instance.go
709 lines (617 loc) · 21.8 KB
/
instance.go
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package instance
import (
"context"
"fmt"
"io"
"time"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sync/errgroup"
grpccodes "google.golang.org/grpc/codes"
grpcstatus "google.golang.org/grpc/status"
"google.golang.org/protobuf/types/known/emptypb"
spdkapi "github.com/longhorn/longhorn-spdk-engine/pkg/api"
spdkclient "github.com/longhorn/longhorn-spdk-engine/pkg/client"
"github.com/longhorn/longhorn-instance-manager/pkg/client"
"github.com/longhorn/longhorn-instance-manager/pkg/meta"
"github.com/longhorn/longhorn-instance-manager/pkg/types"
rpc "github.com/longhorn/longhorn-instance-manager/pkg/imrpc"
)
const (
maxMonitorRetryCount = 10
monitorRetryPollInterval = 1 * time.Second
)
type InstanceOps interface {
InstanceCreate(*rpc.InstanceCreateRequest) (*rpc.InstanceResponse, error)
InstanceDelete(*rpc.InstanceDeleteRequest) (*rpc.InstanceResponse, error)
InstanceGet(*rpc.InstanceGetRequest) (*rpc.InstanceResponse, error)
InstanceList(map[string]*rpc.InstanceResponse) error
InstanceReplace(*rpc.InstanceReplaceRequest) (*rpc.InstanceResponse, error)
InstanceLog(*rpc.InstanceLogRequest, rpc.InstanceService_InstanceLogServer) error
}
type V1DataEngineInstanceOps struct {
processManagerServiceAddress string
}
type V2DataEngineInstanceOps struct {
spdkServiceAddress string
}
type Server struct {
ctx context.Context
logsDir string
HealthChecker HealthChecker
v2DataEngineEnabled bool
ops map[rpc.DataEngine]InstanceOps
}
func NewServer(ctx context.Context, logsDir, processManagerServiceAddress, spdkServiceAddress string, v2DataEngineEnabled bool) (*Server, error) {
ops := map[rpc.DataEngine]InstanceOps{
rpc.DataEngine_DATA_ENGINE_V1: V1DataEngineInstanceOps{
processManagerServiceAddress: processManagerServiceAddress,
},
rpc.DataEngine_DATA_ENGINE_V2: V2DataEngineInstanceOps{
spdkServiceAddress: spdkServiceAddress,
},
}
s := &Server{
ctx: ctx,
logsDir: logsDir,
v2DataEngineEnabled: v2DataEngineEnabled,
HealthChecker: &GRPCHealthChecker{},
ops: ops,
}
go s.startMonitoring()
return s, nil
}
func (s *Server) startMonitoring() {
done := false
for {
select {
case <-s.ctx.Done():
logrus.Infof("%s: stopped monitoring replicas due to the context done", types.InstanceGrpcService)
done = true
}
if done {
break
}
}
}
func (s *Server) VersionGet(ctx context.Context, req *emptypb.Empty) (*rpc.VersionResponse, error) {
v := meta.GetVersion()
return &rpc.VersionResponse{
Version: v.Version,
GitCommit: v.GitCommit,
BuildDate: v.BuildDate,
InstanceManagerAPIVersion: int64(v.InstanceManagerAPIVersion),
InstanceManagerAPIMinVersion: int64(v.InstanceManagerAPIMinVersion),
InstanceManagerProxyAPIVersion: int64(v.InstanceManagerProxyAPIVersion),
InstanceManagerProxyAPIMinVersion: int64(v.InstanceManagerProxyAPIMinVersion),
}, nil
}
func (s *Server) InstanceCreate(ctx context.Context, req *rpc.InstanceCreateRequest) (*rpc.InstanceResponse, error) {
logrus.WithFields(logrus.Fields{
"name": req.Spec.Name,
"type": req.Spec.Type,
"dataEngine": req.Spec.DataEngine,
}).Info("Creating instance")
ops, ok := s.ops[req.Spec.DataEngine]
if !ok {
return nil, grpcstatus.Errorf(grpccodes.Unimplemented, "unsupported data engine %v", req.Spec.DataEngine)
}
return ops.InstanceCreate(req)
}
func (ops V1DataEngineInstanceOps) InstanceCreate(req *rpc.InstanceCreateRequest) (*rpc.InstanceResponse, error) {
if req.Spec.ProcessInstanceSpec == nil {
return nil, grpcstatus.Error(grpccodes.InvalidArgument, "ProcessInstanceSpec is required for longhorn data engine")
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
process, err := pmClient.ProcessCreate(req.Spec.Name, req.Spec.ProcessInstanceSpec.Binary, int(req.Spec.PortCount), req.Spec.ProcessInstanceSpec.Args, req.Spec.PortArgs)
if err != nil {
return nil, err
}
return processResponseToInstanceResponse(process), nil
}
func (ops V2DataEngineInstanceOps) InstanceCreate(req *rpc.InstanceCreateRequest) (*rpc.InstanceResponse, error) {
c, err := spdkclient.NewSPDKClient(ops.spdkServiceAddress)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create SPDK client").Error())
}
defer c.Close()
switch req.Spec.Type {
case types.InstanceTypeEngine:
engine, err := c.EngineCreate(req.Spec.Name, req.Spec.VolumeName, req.Spec.SpdkInstanceSpec.Frontend, req.Spec.SpdkInstanceSpec.Size, req.Spec.SpdkInstanceSpec.ReplicaAddressMap, req.Spec.PortCount)
if err != nil {
return nil, err
}
return engineResponseToInstanceResponse(engine), nil
case types.InstanceTypeReplica:
replica, err := c.ReplicaCreate(req.Spec.Name, req.Spec.SpdkInstanceSpec.DiskName, req.Spec.SpdkInstanceSpec.DiskUuid, req.Spec.SpdkInstanceSpec.Size, req.Spec.SpdkInstanceSpec.ExposeRequired, req.Spec.PortCount)
if err != nil {
return nil, err
}
return replicaResponseToInstanceResponse(replica), nil
default:
return nil, grpcstatus.Errorf(grpccodes.InvalidArgument, "unknown instance type %v", req.Spec.Type)
}
}
func (s *Server) InstanceDelete(ctx context.Context, req *rpc.InstanceDeleteRequest) (*rpc.InstanceResponse, error) {
logrus.WithFields(logrus.Fields{
"name": req.Name,
"type": req.Type,
"dataEngine": req.DataEngine,
"diskUuid": req.DiskUuid,
"cleanupRequired": req.CleanupRequired,
}).Info("Deleting instance")
ops, ok := s.ops[req.DataEngine]
if !ok {
return nil, grpcstatus.Errorf(grpccodes.Unimplemented, "unsupported data engine %v", req.DataEngine)
}
return ops.InstanceDelete(req)
}
func (ops V1DataEngineInstanceOps) InstanceDelete(req *rpc.InstanceDeleteRequest) (*rpc.InstanceResponse, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
process, err := pmClient.ProcessDelete(req.Name)
if err != nil {
return nil, err
}
return processResponseToInstanceResponse(process), nil
}
func (ops V2DataEngineInstanceOps) InstanceDelete(req *rpc.InstanceDeleteRequest) (*rpc.InstanceResponse, error) {
c, err := spdkclient.NewSPDKClient(ops.spdkServiceAddress)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create SPDK client").Error())
}
defer c.Close()
switch req.Type {
case types.InstanceTypeEngine:
if req.CleanupRequired {
err = c.EngineDelete(req.Name)
}
case types.InstanceTypeReplica:
err = c.ReplicaDelete(req.Name, req.CleanupRequired)
default:
err = grpcstatus.Errorf(grpccodes.InvalidArgument, "unknown instance type %v", req.Type)
}
if err != nil {
return nil, err
}
return &rpc.InstanceResponse{
Spec: &rpc.InstanceSpec{
Name: req.Name,
},
Status: &rpc.InstanceStatus{
State: types.ProcessStateStopped,
},
Deleted: true,
}, nil
}
func (s *Server) InstanceGet(ctx context.Context, req *rpc.InstanceGetRequest) (*rpc.InstanceResponse, error) {
logrus.WithFields(logrus.Fields{
"name": req.Name,
"type": req.Type,
"dataEngine": req.DataEngine,
}).Trace("Getting instance")
ops, ok := s.ops[req.DataEngine]
if !ok {
return nil, grpcstatus.Errorf(grpccodes.Unimplemented, "unsupported data engine %v", req.DataEngine)
}
return ops.InstanceGet(req)
}
func (ops V1DataEngineInstanceOps) InstanceGet(req *rpc.InstanceGetRequest) (*rpc.InstanceResponse, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
process, err := pmClient.ProcessGet(req.Name)
if err != nil {
return nil, err
}
return processResponseToInstanceResponse(process), nil
}
func (ops V2DataEngineInstanceOps) InstanceGet(req *rpc.InstanceGetRequest) (*rpc.InstanceResponse, error) {
c, err := spdkclient.NewSPDKClient(ops.spdkServiceAddress)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create SPDK client").Error())
}
defer c.Close()
switch req.Type {
case types.InstanceTypeEngine:
engine, err := c.EngineGet(req.Name)
if err != nil {
return nil, err
}
return engineResponseToInstanceResponse(engine), nil
case types.InstanceTypeReplica:
replica, err := c.ReplicaGet(req.Name)
if err != nil {
return nil, err
}
return replicaResponseToInstanceResponse(replica), nil
default:
return nil, grpcstatus.Errorf(grpccodes.InvalidArgument, "unknown instance type %v", req.Type)
}
}
func (s *Server) InstanceList(ctx context.Context, req *emptypb.Empty) (*rpc.InstanceListResponse, error) {
logrus.WithFields(logrus.Fields{}).Trace("Listing instances")
instances := map[string]*rpc.InstanceResponse{}
err := s.ops[rpc.DataEngine_DATA_ENGINE_V1].InstanceList(instances)
if err != nil {
return nil, err
}
if s.v2DataEngineEnabled {
err := s.ops[rpc.DataEngine_DATA_ENGINE_V2].InstanceList(instances)
if err != nil {
return nil, err
}
}
return &rpc.InstanceListResponse{
Instances: instances,
}, nil
}
func (ops V1DataEngineInstanceOps) InstanceList(instances map[string]*rpc.InstanceResponse) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
processes, err := pmClient.ProcessList()
if err != nil {
return err
}
for _, process := range processes {
instances[process.Spec.Name] = processResponseToInstanceResponse(process)
}
return nil
}
func (ops V2DataEngineInstanceOps) InstanceList(instances map[string]*rpc.InstanceResponse) error {
c, err := spdkclient.NewSPDKClient(ops.spdkServiceAddress)
if err != nil {
return grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create SPDK client").Error())
}
defer c.Close()
replicas, err := c.ReplicaList()
if err != nil {
return err
}
for _, replica := range replicas {
instances[replica.Name] = replicaResponseToInstanceResponse(replica)
}
engines, err := c.EngineList()
if err != nil {
return err
}
for _, engine := range engines {
instances[engine.Name] = engineResponseToInstanceResponse(engine)
}
return nil
}
func (s *Server) InstanceReplace(ctx context.Context, req *rpc.InstanceReplaceRequest) (*rpc.InstanceResponse, error) {
logrus.WithFields(logrus.Fields{
"name": req.Spec.Name,
"type": req.Spec.Type,
"dataEngine": req.Spec.DataEngine,
}).Info("Replacing instance")
ops, ok := s.ops[req.Spec.DataEngine]
if !ok {
return nil, grpcstatus.Errorf(grpccodes.Unimplemented, "unsupported data engine %v", req.Spec.DataEngine)
}
return ops.InstanceReplace(req)
}
func (ops V1DataEngineInstanceOps) InstanceReplace(req *rpc.InstanceReplaceRequest) (*rpc.InstanceResponse, error) {
if req.Spec.ProcessInstanceSpec == nil {
return nil, grpcstatus.Error(grpccodes.InvalidArgument, "ProcessInstanceSpec is required for longhorn data engine")
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return nil, grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
process, err := pmClient.ProcessReplace(req.Spec.Name,
req.Spec.ProcessInstanceSpec.Binary, int(req.Spec.PortCount), req.Spec.ProcessInstanceSpec.Args, req.Spec.PortArgs, req.TerminateSignal)
if err != nil {
return nil, err
}
return processResponseToInstanceResponse(process), nil
}
func (ops V2DataEngineInstanceOps) InstanceReplace(req *rpc.InstanceReplaceRequest) (*rpc.InstanceResponse, error) {
return nil, grpcstatus.Error(grpccodes.Unimplemented, "v2 data engine instance replace is not supported")
}
func (s *Server) InstanceLog(req *rpc.InstanceLogRequest, srv rpc.InstanceService_InstanceLogServer) error {
logrus.WithFields(logrus.Fields{
"name": req.Name,
"type": req.Type,
"dataEngine": req.DataEngine,
}).Info("Getting instance log")
ops, ok := s.ops[req.DataEngine]
if !ok {
return grpcstatus.Errorf(grpccodes.Unimplemented, "unsupported data engine %v", req.DataEngine)
}
return ops.InstanceLog(req, srv)
}
func (ops V1DataEngineInstanceOps) InstanceLog(req *rpc.InstanceLogRequest, srv rpc.InstanceService_InstanceLogServer) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
return grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
defer pmClient.Close()
stream, err := pmClient.ProcessLog(context.Background(), req.Name)
if err != nil {
return err
}
for {
line, err := stream.Recv()
if err == io.EOF {
break
} else if err != nil {
logrus.WithError(err).Error("Failed to receive log")
return err
}
if err := srv.Send(&rpc.LogResponse{Line: line}); err != nil {
return err
}
}
return nil
}
func (ops V2DataEngineInstanceOps) InstanceLog(req *rpc.InstanceLogRequest, srv rpc.InstanceService_InstanceLogServer) error {
return grpcstatus.Error(grpccodes.Unimplemented, "v2 data engine instance log is not supported")
}
func (s *Server) handleNotify(ctx context.Context, notifyChan chan struct{}, srv rpc.InstanceService_InstanceWatchServer) error {
logrus.Info("Start handling notify")
for {
select {
case <-ctx.Done():
logrus.Info("Stopped handling notify due to the context done")
return ctx.Err()
case <-notifyChan:
if err := srv.Send(&emptypb.Empty{}); err != nil {
return errors.Wrap(err, "failed to send instance response")
}
}
}
}
func (s *Server) InstanceWatch(req *emptypb.Empty, srv rpc.InstanceService_InstanceWatchServer) error {
logrus.Info("Start watching instances")
done := make(chan struct{})
clients := map[string]interface{}{}
go func() {
<-done
logrus.Info("Stopped clients for watching instances")
for name, c := range clients {
switch c := c.(type) {
case *client.ProcessManagerClient:
c.Close()
case *spdkclient.SPDKClient:
c.Close()
}
delete(clients, name)
}
close(done)
}()
// Create a client for watching processes
ops := s.ops[rpc.DataEngine_DATA_ENGINE_V1].(V1DataEngineInstanceOps)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pmClient, err := client.NewProcessManagerClient(ctx, cancel, "tcp://"+ops.processManagerServiceAddress, nil)
if err != nil {
done <- struct{}{}
return grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create ProcessManagerClient").Error())
}
clients["processManagerClient"] = pmClient
var spdkClient *spdkclient.SPDKClient
if s.v2DataEngineEnabled {
// Create a client for watching SPDK engines and replicas
ops := s.ops[rpc.DataEngine_DATA_ENGINE_V2].(V2DataEngineInstanceOps)
spdkClient, err = spdkclient.NewSPDKClient(ops.spdkServiceAddress)
if err != nil {
done <- struct{}{}
return grpcstatus.Error(grpccodes.Internal, errors.Wrapf(err, "failed to create SPDK client").Error())
}
clients["spdkClient"] = spdkClient
}
notifyChan := make(chan struct{}, 1024)
defer close(notifyChan)
g, ctx := errgroup.WithContext(s.ctx)
g.Go(func() error {
defer func() {
// Close the clients for closing streams and unblocking notifier Recv() with error.
done <- struct{}{}
}()
return s.handleNotify(ctx, notifyChan, srv)
})
g.Go(func() error {
return s.watchProcess(ctx, req, pmClient, notifyChan)
})
if s.v2DataEngineEnabled {
g.Go(func() error {
return s.watchSPDKEngine(ctx, req, spdkClient, notifyChan)
})
g.Go(func() error {
return s.watchSPDKReplica(ctx, req, spdkClient, notifyChan)
})
}
if err := g.Wait(); err != nil {
logrus.WithError(err).Error("Failed to watch instances")
return errors.Wrap(err, "failed to watch instances")
}
return nil
}
func (s *Server) watchSPDKReplica(ctx context.Context, req *emptypb.Empty, client *spdkclient.SPDKClient, notifyChan chan struct{}) error {
logrus.Info("Start watching SPDK replicas")
notifier, err := client.ReplicaWatch(context.Background())
if err != nil {
return errors.Wrap(err, "failed to create SPDK replica watch notifier")
}
failureCount := 0
for {
if failureCount >= maxMonitorRetryCount {
logrus.Errorf("Continuously receiving errors for %v times, stopping watching SPDK replicas", maxMonitorRetryCount)
return fmt.Errorf("continuously receiving errors for %v times, stopping watching SPDK replicas", maxMonitorRetryCount)
}
select {
case <-ctx.Done():
logrus.Info("Stopped watching SPDK replicas")
return ctx.Err()
default:
_, err := notifier.Recv()
if err != nil {
status, ok := grpcstatus.FromError(err)
if ok && status.Code() == grpccodes.Canceled {
logrus.WithError(err).Warn("SPDK replica watch is canceled")
return err
}
logrus.WithError(err).Error("Failed to receive next item in SPDK replica watch")
time.Sleep(monitorRetryPollInterval)
failureCount++
} else {
notifyChan <- struct{}{}
}
}
}
}
func (s *Server) watchSPDKEngine(ctx context.Context, req *emptypb.Empty, client *spdkclient.SPDKClient, notifyChan chan struct{}) error {
logrus.Info("Start watching SPDK engines")
notifier, err := client.EngineWatch(context.Background())
if err != nil {
return errors.Wrap(err, "failed to create SPDK engine watch notifier")
}
failureCount := 0
for {
if failureCount >= maxMonitorRetryCount {
logrus.Errorf("Continuously receiving errors for %v times, stopping watching SPDK engines", maxMonitorRetryCount)
return fmt.Errorf("continuously receiving errors for %v times, stopping watching SPDK engines", maxMonitorRetryCount)
}
select {
case <-ctx.Done():
logrus.Info("Stopped watching SPDK engines")
return ctx.Err()
default:
_, err := notifier.Recv()
if err != nil {
status, ok := grpcstatus.FromError(err)
if ok && status.Code() == grpccodes.Canceled {
logrus.WithError(err).Warn("SPDK engine watch is canceled")
return err
}
logrus.WithError(err).Error("Failed to receive next item in SPDK engine watch")
time.Sleep(monitorRetryPollInterval)
failureCount++
} else {
notifyChan <- struct{}{}
}
}
}
}
func (s *Server) watchProcess(ctx context.Context, req *emptypb.Empty, client *client.ProcessManagerClient, notifyChan chan struct{}) error {
logrus.Info("Start watching processes")
notifier, err := client.ProcessWatch(context.Background())
if err != nil {
return errors.Wrap(err, "failed to create process watch notifier")
}
failureCount := 0
for {
if failureCount >= maxMonitorRetryCount {
logrus.Errorf("Continuously receiving errors for %v times, stopping watching processes", maxMonitorRetryCount)
return fmt.Errorf("continuously receiving errors for %v times, stopping watching processes", maxMonitorRetryCount)
}
select {
case <-ctx.Done():
logrus.Info("Stopped watching processes")
return ctx.Err()
default:
_, err := notifier.Recv()
if err != nil {
status, ok := grpcstatus.FromError(err)
if ok && status.Code() == grpccodes.Canceled {
logrus.WithError(err).Warn("Process watch is canceled")
return err
}
logrus.WithError(err).Error("Failed to receive next item in process watch")
time.Sleep(monitorRetryPollInterval)
failureCount++
} else {
notifyChan <- struct{}{}
}
}
}
}
func processResponseToInstanceResponse(p *rpc.ProcessResponse) *rpc.InstanceResponse {
return &rpc.InstanceResponse{
Spec: &rpc.InstanceSpec{
Name: p.Spec.Name,
// Leave Type empty. It will be determined in longhorn manager.
Type: "",
// Deprecated
BackendStoreDriver: rpc.BackendStoreDriver_v1,
DataEngine: rpc.DataEngine_DATA_ENGINE_V1,
ProcessInstanceSpec: &rpc.ProcessInstanceSpec{
Binary: p.Spec.Binary,
Args: p.Spec.Args,
},
PortCount: int32(p.Spec.PortCount),
PortArgs: p.Spec.PortArgs,
},
Status: &rpc.InstanceStatus{
State: p.Status.State,
PortStart: p.Status.PortStart,
PortEnd: p.Status.PortEnd,
ErrorMsg: p.Status.ErrorMsg,
Conditions: p.Status.Conditions,
},
Deleted: p.Deleted,
}
}
func replicaResponseToInstanceResponse(r *spdkapi.Replica) *rpc.InstanceResponse {
return &rpc.InstanceResponse{
Spec: &rpc.InstanceSpec{
Name: r.Name,
Type: types.InstanceTypeReplica,
// Deprecated
BackendStoreDriver: rpc.BackendStoreDriver_v2,
DataEngine: rpc.DataEngine_DATA_ENGINE_V2,
},
Status: &rpc.InstanceStatus{
State: r.State,
ErrorMsg: r.ErrorMsg,
PortStart: r.PortStart,
PortEnd: r.PortEnd,
Conditions: make(map[string]bool),
},
}
}
func engineResponseToInstanceResponse(e *spdkapi.Engine) *rpc.InstanceResponse {
return &rpc.InstanceResponse{
Spec: &rpc.InstanceSpec{
Name: e.Name,
Type: types.InstanceTypeEngine,
// Deprecated
BackendStoreDriver: rpc.BackendStoreDriver_v2,
DataEngine: rpc.DataEngine_DATA_ENGINE_V2,
},
Status: &rpc.InstanceStatus{
State: e.State,
ErrorMsg: e.ErrorMsg,
PortStart: e.Port,
PortEnd: e.Port,
Conditions: make(map[string]bool),
},
}
}