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root_coord.go
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root_coord.go
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// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rootcoord
import (
"context"
"fmt"
"math/rand"
"os"
"sync"
"time"
"github.com/cockroachdb/errors"
"github.com/samber/lo"
"github.com/tikv/client-go/v2/txnkv"
clientv3 "go.etcd.io/etcd/client/v3"
"go.uber.org/atomic"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
"github.com/milvus-io/milvus/internal/allocator"
"github.com/milvus-io/milvus/internal/kv"
etcdkv "github.com/milvus-io/milvus/internal/kv/etcd"
"github.com/milvus-io/milvus/internal/kv/tikv"
"github.com/milvus-io/milvus/internal/metastore"
kvmetestore "github.com/milvus-io/milvus/internal/metastore/kv/rootcoord"
"github.com/milvus-io/milvus/internal/metastore/model"
pb "github.com/milvus-io/milvus/internal/proto/etcdpb"
"github.com/milvus-io/milvus/internal/proto/internalpb"
"github.com/milvus-io/milvus/internal/proto/proxypb"
"github.com/milvus-io/milvus/internal/proto/rootcoordpb"
tso2 "github.com/milvus-io/milvus/internal/tso"
"github.com/milvus-io/milvus/internal/types"
"github.com/milvus-io/milvus/internal/util/dependency"
"github.com/milvus-io/milvus/internal/util/proxyutil"
"github.com/milvus-io/milvus/internal/util/sessionutil"
tsoutil2 "github.com/milvus-io/milvus/internal/util/tsoutil"
"github.com/milvus-io/milvus/pkg/common"
"github.com/milvus-io/milvus/pkg/log"
"github.com/milvus-io/milvus/pkg/metrics"
"github.com/milvus-io/milvus/pkg/util"
"github.com/milvus-io/milvus/pkg/util/commonpbutil"
"github.com/milvus-io/milvus/pkg/util/crypto"
"github.com/milvus-io/milvus/pkg/util/expr"
"github.com/milvus-io/milvus/pkg/util/funcutil"
"github.com/milvus-io/milvus/pkg/util/logutil"
"github.com/milvus-io/milvus/pkg/util/merr"
"github.com/milvus-io/milvus/pkg/util/metricsinfo"
"github.com/milvus-io/milvus/pkg/util/paramtable"
"github.com/milvus-io/milvus/pkg/util/retry"
"github.com/milvus-io/milvus/pkg/util/timerecord"
"github.com/milvus-io/milvus/pkg/util/tsoutil"
"github.com/milvus-io/milvus/pkg/util/typeutil"
)
// UniqueID is an alias of typeutil.UniqueID.
type UniqueID = typeutil.UniqueID
// Timestamp is an alias of typeutil.Timestamp
type Timestamp = typeutil.Timestamp
const InvalidCollectionID = UniqueID(0)
var Params *paramtable.ComponentParam = paramtable.Get()
type Opt func(*Core)
type metaKVCreator func() (kv.MetaKv, error)
// Core root coordinator core
type Core struct {
ctx context.Context
cancel context.CancelFunc
wg sync.WaitGroup
etcdCli *clientv3.Client
tikvCli *txnkv.Client
address string
meta IMetaTable
scheduler IScheduler
broker Broker
ddlTsLockManager DdlTsLockManager
garbageCollector GarbageCollector
stepExecutor StepExecutor
metaKVCreator metaKVCreator
proxyCreator proxyutil.ProxyCreator
proxyWatcher *proxyutil.ProxyWatcher
proxyClientManager proxyutil.ProxyClientManagerInterface
metricsCacheManager *metricsinfo.MetricsCacheManager
chanTimeTick *timetickSync
idAllocator allocator.Interface
tsoAllocator tso2.Allocator
dataCoord types.DataCoordClient
queryCoord types.QueryCoordClient
quotaCenter *QuotaCenter
stateCode atomic.Int32
initOnce sync.Once
startOnce sync.Once
session *sessionutil.Session
factory dependency.Factory
enableActiveStandBy bool
activateFunc func() error
}
// --------------------- function --------------------------
// NewCore creates a new rootcoord core
func NewCore(c context.Context, factory dependency.Factory) (*Core, error) {
ctx, cancel := context.WithCancel(c)
rand.Seed(time.Now().UnixNano())
core := &Core{
ctx: ctx,
cancel: cancel,
factory: factory,
enableActiveStandBy: Params.RootCoordCfg.EnableActiveStandby.GetAsBool(),
}
core.UpdateStateCode(commonpb.StateCode_Abnormal)
core.SetProxyCreator(proxyutil.DefaultProxyCreator)
expr.Register("rootcoord", core)
return core, nil
}
// UpdateStateCode update state code
func (c *Core) UpdateStateCode(code commonpb.StateCode) {
c.stateCode.Store(int32(code))
log.Info("update rootcoord state", zap.String("state", code.String()))
}
func (c *Core) GetStateCode() commonpb.StateCode {
return commonpb.StateCode(c.stateCode.Load())
}
func (c *Core) sendTimeTick(t Timestamp, reason string) error {
pc := c.chanTimeTick.listDmlChannels()
pt := make([]uint64, len(pc))
for i := 0; i < len(pt); i++ {
pt[i] = t
}
ttMsg := internalpb.ChannelTimeTickMsg{
Base: commonpbutil.NewMsgBase(
commonpbutil.WithMsgType(commonpb.MsgType_TimeTick),
commonpbutil.WithTimeStamp(t),
commonpbutil.WithSourceID(ddlSourceID),
),
ChannelNames: pc,
Timestamps: pt,
DefaultTimestamp: t,
}
return c.chanTimeTick.updateTimeTick(&ttMsg, reason)
}
func (c *Core) sendMinDdlTsAsTt() {
if !paramtable.Get().CommonCfg.TTMsgEnabled.GetAsBool() {
return
}
code := c.GetStateCode()
if code != commonpb.StateCode_Healthy {
log.Warn("rootCoord is not healthy, skip send timetick")
return
}
minBgDdlTs := c.ddlTsLockManager.GetMinDdlTs()
minNormalDdlTs := c.scheduler.GetMinDdlTs()
minDdlTs := funcutil.Min(minBgDdlTs, minNormalDdlTs)
// zero -> ddlTsLockManager and scheduler not started.
if minDdlTs == typeutil.ZeroTimestamp {
log.Warn("zero ts was met, this should be only occurred in starting state", zap.Uint64("minBgDdlTs", minBgDdlTs), zap.Uint64("minNormalDdlTs", minNormalDdlTs))
return
}
// max -> abnormal case, impossible.
if minDdlTs == typeutil.MaxTimestamp {
log.Warn("ddl ts is abnormal, max ts was met", zap.Uint64("minBgDdlTs", minBgDdlTs), zap.Uint64("minNormalDdlTs", minNormalDdlTs))
return
}
if err := c.sendTimeTick(minDdlTs, "timetick loop"); err != nil {
log.Warn("failed to send timetick", zap.Error(err))
}
}
func (c *Core) startTimeTickLoop() {
defer c.wg.Done()
ticker := time.NewTicker(Params.ProxyCfg.TimeTickInterval.GetAsDuration(time.Millisecond))
defer ticker.Stop()
for {
select {
case <-c.ctx.Done():
log.Info("rootcoord's timetick loop quit!")
return
case <-ticker.C:
c.sendMinDdlTsAsTt()
}
}
}
func (c *Core) tsLoop() {
defer c.wg.Done()
tsoTicker := time.NewTicker(tso2.UpdateTimestampStep)
defer tsoTicker.Stop()
ctx, cancel := context.WithCancel(c.ctx)
defer cancel()
for {
select {
case <-tsoTicker.C:
if err := c.tsoAllocator.UpdateTSO(); err != nil {
log.Warn("failed to update tso", zap.Error(err))
continue
}
ts := c.tsoAllocator.GetLastSavedTime()
metrics.RootCoordTimestampSaved.Set(float64(ts.Unix()))
case <-ctx.Done():
log.Info("rootcoord's ts loop quit!")
return
}
}
}
func (c *Core) SetProxyCreator(f func(ctx context.Context, addr string, nodeID int64) (types.ProxyClient, error)) {
c.proxyCreator = f
}
func (c *Core) SetDataCoordClient(s types.DataCoordClient) error {
if s == nil {
return errors.New("null DataCoord interface")
}
c.dataCoord = s
return nil
}
func (c *Core) SetQueryCoordClient(s types.QueryCoordClient) error {
if s == nil {
return errors.New("null QueryCoord interface")
}
c.queryCoord = s
return nil
}
// Register register rootcoord at etcd
func (c *Core) Register() error {
c.session.Register()
afterRegister := func() {
metrics.NumNodes.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), typeutil.RootCoordRole).Inc()
log.Info("RootCoord Register Finished")
c.session.LivenessCheck(c.ctx, func() {
log.Error("Root Coord disconnected from etcd, process will exit", zap.Int64("Server Id", c.session.ServerID))
os.Exit(1)
})
}
if c.enableActiveStandBy {
go func() {
if err := c.session.ProcessActiveStandBy(c.activateFunc); err != nil {
log.Warn("failed to activate standby rootcoord server", zap.Error(err))
return
}
afterRegister()
}()
} else {
afterRegister()
}
return nil
}
func (c *Core) SetAddress(address string) {
c.address = address
}
// SetEtcdClient sets the etcdCli of Core
func (c *Core) SetEtcdClient(etcdClient *clientv3.Client) {
c.etcdCli = etcdClient
}
// SetTiKVClient sets the tikvCli of Core
func (c *Core) SetTiKVClient(client *txnkv.Client) {
c.tikvCli = client
}
func (c *Core) initSession() error {
c.session = sessionutil.NewSession(c.ctx)
if c.session == nil {
return fmt.Errorf("session is nil, the etcd client connection may have failed")
}
c.session.Init(typeutil.RootCoordRole, c.address, true, true)
c.session.SetEnableActiveStandBy(c.enableActiveStandBy)
return nil
}
func (c *Core) initKVCreator() {
if c.metaKVCreator == nil {
if Params.MetaStoreCfg.MetaStoreType.GetValue() == util.MetaStoreTypeTiKV {
c.metaKVCreator = func() (kv.MetaKv, error) {
return tikv.NewTiKV(c.tikvCli, Params.TiKVCfg.MetaRootPath.GetValue(),
tikv.WithRequestTimeout(paramtable.Get().ServiceParam.TiKVCfg.RequestTimeout.GetAsDuration(time.Millisecond))), nil
}
} else {
c.metaKVCreator = func() (kv.MetaKv, error) {
return etcdkv.NewEtcdKV(c.etcdCli, Params.EtcdCfg.MetaRootPath.GetValue(),
etcdkv.WithRequestTimeout(paramtable.Get().ServiceParam.EtcdCfg.RequestTimeout.GetAsDuration(time.Millisecond))), nil
}
}
}
}
func (c *Core) initMetaTable() error {
fn := func() error {
var catalog metastore.RootCoordCatalog
var err error
switch Params.MetaStoreCfg.MetaStoreType.GetValue() {
case util.MetaStoreTypeEtcd:
log.Info("Using etcd as meta storage.")
var metaKV kv.MetaKv
var ss *kvmetestore.SuffixSnapshot
var err error
if metaKV, err = c.metaKVCreator(); err != nil {
return err
}
if ss, err = kvmetestore.NewSuffixSnapshot(metaKV, kvmetestore.SnapshotsSep, Params.EtcdCfg.MetaRootPath.GetValue(), kvmetestore.SnapshotPrefix); err != nil {
return err
}
catalog = &kvmetestore.Catalog{Txn: metaKV, Snapshot: ss}
case util.MetaStoreTypeTiKV:
log.Info("Using tikv as meta storage.")
var metaKV kv.MetaKv
var ss *kvmetestore.SuffixSnapshot
var err error
if metaKV, err = c.metaKVCreator(); err != nil {
return err
}
if ss, err = kvmetestore.NewSuffixSnapshot(metaKV, kvmetestore.SnapshotsSep, Params.TiKVCfg.MetaRootPath.GetValue(), kvmetestore.SnapshotPrefix); err != nil {
return err
}
catalog = &kvmetestore.Catalog{Txn: metaKV, Snapshot: ss}
default:
return retry.Unrecoverable(fmt.Errorf("not supported meta store: %s", Params.MetaStoreCfg.MetaStoreType.GetValue()))
}
if c.meta, err = NewMetaTable(c.ctx, catalog, c.tsoAllocator); err != nil {
return err
}
return nil
}
return retry.Do(c.ctx, fn, retry.Attempts(10))
}
func (c *Core) initIDAllocator() error {
var tsoKV kv.TxnKV
var kvPath string
if Params.MetaStoreCfg.MetaStoreType.GetValue() == util.MetaStoreTypeTiKV {
kvPath = Params.TiKVCfg.KvRootPath.GetValue()
tsoKV = tsoutil2.NewTSOTiKVBase(c.tikvCli, kvPath, globalIDAllocatorSubPath)
} else {
kvPath = Params.EtcdCfg.KvRootPath.GetValue()
tsoKV = tsoutil2.NewTSOKVBase(c.etcdCli, kvPath, globalIDAllocatorSubPath)
}
idAllocator := allocator.NewGlobalIDAllocator(globalIDAllocatorKey, tsoKV)
if err := idAllocator.Initialize(); err != nil {
return err
}
c.idAllocator = idAllocator
log.Info("id allocator initialized",
zap.String("root_path", kvPath),
zap.String("sub_path", globalIDAllocatorSubPath),
zap.String("key", globalIDAllocatorKey))
return nil
}
func (c *Core) initTSOAllocator() error {
var tsoKV kv.TxnKV
var kvPath string
if Params.MetaStoreCfg.MetaStoreType.GetValue() == util.MetaStoreTypeTiKV {
kvPath = Params.TiKVCfg.KvRootPath.GetValue()
tsoKV = tsoutil2.NewTSOTiKVBase(c.tikvCli, Params.TiKVCfg.KvRootPath.GetValue(), globalIDAllocatorSubPath)
} else {
kvPath = Params.EtcdCfg.KvRootPath.GetValue()
tsoKV = tsoutil2.NewTSOKVBase(c.etcdCli, Params.EtcdCfg.KvRootPath.GetValue(), globalIDAllocatorSubPath)
}
tsoAllocator := tso2.NewGlobalTSOAllocator(globalTSOAllocatorKey, tsoKV)
if err := tsoAllocator.Initialize(); err != nil {
return err
}
c.tsoAllocator = tsoAllocator
log.Info("tso allocator initialized",
zap.String("root_path", kvPath),
zap.String("sub_path", globalIDAllocatorSubPath),
zap.String("key", globalIDAllocatorKey))
return nil
}
func (c *Core) initInternal() error {
c.UpdateStateCode(commonpb.StateCode_Initializing)
c.initKVCreator()
if err := c.initIDAllocator(); err != nil {
return err
}
if err := c.initTSOAllocator(); err != nil {
return err
}
if err := c.initMetaTable(); err != nil {
return err
}
c.scheduler = newScheduler(c.ctx, c.idAllocator, c.tsoAllocator)
c.factory.Init(Params)
chanMap := c.meta.ListCollectionPhysicalChannels()
c.chanTimeTick = newTimeTickSync(c.ctx, c.session.ServerID, c.factory, chanMap)
log.Info("create TimeTick sync done")
c.proxyClientManager = proxyutil.NewProxyClientManager(c.proxyCreator)
c.broker = newServerBroker(c)
c.ddlTsLockManager = newDdlTsLockManager(c.tsoAllocator)
c.garbageCollector = newBgGarbageCollector(c)
c.stepExecutor = newBgStepExecutor(c.ctx)
c.proxyWatcher = proxyutil.NewProxyWatcher(
c.etcdCli,
c.chanTimeTick.initSessions,
c.proxyClientManager.AddProxyClients,
)
c.proxyWatcher.AddSessionFunc(c.chanTimeTick.addSession, c.proxyClientManager.AddProxyClient)
c.proxyWatcher.DelSessionFunc(c.chanTimeTick.delSession, c.proxyClientManager.DelProxyClient)
log.Info("init proxy manager done")
c.metricsCacheManager = metricsinfo.NewMetricsCacheManager()
c.quotaCenter = NewQuotaCenter(c.proxyClientManager, c.queryCoord, c.dataCoord, c.tsoAllocator, c.meta)
log.Debug("RootCoord init QuotaCenter done")
if err := c.initCredentials(); err != nil {
return err
}
log.Info("init credentials done")
if err := c.initRbac(); err != nil {
return err
}
log.Info("init rootcoord done", zap.Int64("nodeID", paramtable.GetNodeID()), zap.String("Address", c.address))
return nil
}
// Init initialize routine
func (c *Core) Init() error {
var initError error
c.factory.Init(Params)
if err := c.initSession(); err != nil {
return err
}
if c.enableActiveStandBy {
c.activateFunc = func() error {
log.Info("RootCoord switch from standby to active, activating")
var err error
c.initOnce.Do(func() {
if err = c.initInternal(); err != nil {
log.Error("RootCoord init failed", zap.Error(err))
}
})
if err != nil {
return err
}
c.startOnce.Do(func() {
if err = c.startInternal(); err != nil {
log.Error("RootCoord start failed", zap.Error(err))
}
})
log.Info("RootCoord startup success", zap.String("address", c.session.Address))
return err
}
c.UpdateStateCode(commonpb.StateCode_StandBy)
log.Info("RootCoord enter standby mode successfully")
} else {
c.initOnce.Do(func() {
initError = c.initInternal()
})
}
return initError
}
func (c *Core) initCredentials() error {
credInfo, _ := c.meta.GetCredential(util.UserRoot)
if credInfo == nil {
log.Debug("RootCoord init user root")
encryptedRootPassword, _ := crypto.PasswordEncrypt(util.DefaultRootPassword)
err := c.meta.AddCredential(&internalpb.CredentialInfo{Username: util.UserRoot, EncryptedPassword: encryptedRootPassword})
return err
}
return nil
}
func (c *Core) initRbac() error {
var err error
// create default roles, including admin, public
for _, role := range util.DefaultRoles {
err = c.meta.CreateRole(util.DefaultTenant, &milvuspb.RoleEntity{Name: role})
if err != nil && !common.IsIgnorableError(err) {
return errors.Wrap(err, "failed to create role")
}
}
// grant privileges for the public role
globalPrivileges := []string{
commonpb.ObjectPrivilege_PrivilegeDescribeCollection.String(),
commonpb.ObjectPrivilege_PrivilegeShowCollections.String(),
}
collectionPrivileges := []string{
commonpb.ObjectPrivilege_PrivilegeIndexDetail.String(),
}
for _, globalPrivilege := range globalPrivileges {
err = c.meta.OperatePrivilege(util.DefaultTenant, &milvuspb.GrantEntity{
Role: &milvuspb.RoleEntity{Name: util.RolePublic},
Object: &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Global.String()},
ObjectName: util.AnyWord,
DbName: util.AnyWord,
Grantor: &milvuspb.GrantorEntity{
User: &milvuspb.UserEntity{Name: util.UserRoot},
Privilege: &milvuspb.PrivilegeEntity{Name: globalPrivilege},
},
}, milvuspb.OperatePrivilegeType_Grant)
if err != nil && !common.IsIgnorableError(err) {
return errors.Wrap(err, "failed to grant global privilege")
}
}
for _, collectionPrivilege := range collectionPrivileges {
err = c.meta.OperatePrivilege(util.DefaultTenant, &milvuspb.GrantEntity{
Role: &milvuspb.RoleEntity{Name: util.RolePublic},
Object: &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Collection.String()},
ObjectName: util.AnyWord,
DbName: util.AnyWord,
Grantor: &milvuspb.GrantorEntity{
User: &milvuspb.UserEntity{Name: util.UserRoot},
Privilege: &milvuspb.PrivilegeEntity{Name: collectionPrivilege},
},
}, milvuspb.OperatePrivilegeType_Grant)
if err != nil && !common.IsIgnorableError(err) {
return errors.Wrap(err, "failed to grant collection privilege")
}
}
if Params.RoleCfg.Enabled.GetAsBool() {
return c.initBuiltinRoles()
}
return nil
}
func (c *Core) initBuiltinRoles() error {
rolePrivilegesMap := Params.RoleCfg.Roles.GetAsRoleDetails()
for role, privilegesJSON := range rolePrivilegesMap {
err := c.meta.CreateRole(util.DefaultTenant, &milvuspb.RoleEntity{Name: role})
if err != nil && !common.IsIgnorableError(err) {
log.Error("create a builtin role fail", zap.String("roleName", role), zap.Error(err))
return errors.Wrapf(err, "failed to create a builtin role: %s", role)
}
for _, privilege := range privilegesJSON[util.RoleConfigPrivileges] {
privilegeName := privilege[util.RoleConfigPrivilege]
if !util.IsAnyWord(privilege[util.RoleConfigPrivilege]) {
privilegeName = util.PrivilegeNameForMetastore(privilege[util.RoleConfigPrivilege])
}
err := c.meta.OperatePrivilege(util.DefaultTenant, &milvuspb.GrantEntity{
Role: &milvuspb.RoleEntity{Name: role},
Object: &milvuspb.ObjectEntity{Name: privilege[util.RoleConfigObjectType]},
ObjectName: privilege[util.RoleConfigObjectName],
DbName: privilege[util.RoleConfigDBName],
Grantor: &milvuspb.GrantorEntity{
User: &milvuspb.UserEntity{Name: util.UserRoot},
Privilege: &milvuspb.PrivilegeEntity{Name: privilegeName},
},
}, milvuspb.OperatePrivilegeType_Grant)
if err != nil && !common.IsIgnorableError(err) {
log.Error("grant privilege to builtin role fail", zap.String("roleName", role), zap.Any("privilege", privilege), zap.Error(err))
return errors.Wrapf(err, "failed to grant privilege: <%s, %s, %s> of db: %s to role: %s", privilege[util.RoleConfigObjectType], privilege[util.RoleConfigObjectName], privilege[util.RoleConfigPrivilege], privilege[util.RoleConfigDBName], role)
}
}
util.BuiltinRoles = append(util.BuiltinRoles, role)
log.Info("init a builtin role successfully", zap.String("roleName", role))
}
return nil
}
func (c *Core) restore(ctx context.Context) error {
dbs, err := c.meta.ListDatabases(ctx, typeutil.MaxTimestamp)
if err != nil {
return err
}
for _, db := range dbs {
colls, err := c.meta.ListCollections(ctx, db.Name, typeutil.MaxTimestamp, false)
if err != nil {
return err
}
for _, coll := range colls {
ts, err := c.tsoAllocator.GenerateTSO(1)
if err != nil {
return err
}
if coll.Available() {
for _, part := range coll.Partitions {
switch part.State {
case pb.PartitionState_PartitionDropping:
go c.garbageCollector.ReDropPartition(coll.DBID, coll.PhysicalChannelNames, part.Clone(), ts)
case pb.PartitionState_PartitionCreating:
go c.garbageCollector.RemoveCreatingPartition(coll.DBID, part.Clone(), ts)
default:
}
}
} else {
switch coll.State {
case pb.CollectionState_CollectionDropping:
go c.garbageCollector.ReDropCollection(coll.Clone(), ts)
case pb.CollectionState_CollectionCreating:
go c.garbageCollector.RemoveCreatingCollection(coll.Clone())
default:
}
}
}
}
return nil
}
func (c *Core) startInternal() error {
if err := c.proxyWatcher.WatchProxy(c.ctx); err != nil {
log.Fatal("rootcoord failed to watch proxy", zap.Error(err))
// you can not just stuck here,
panic(err)
}
if err := c.restore(c.ctx); err != nil {
panic(err)
}
if Params.QuotaConfig.QuotaAndLimitsEnabled.GetAsBool() {
c.quotaCenter.Start()
}
c.scheduler.Start()
c.stepExecutor.Start()
go func() {
// refresh rbac cache
if err := retry.Do(c.ctx, func() error {
if err := c.proxyClientManager.RefreshPolicyInfoCache(c.ctx, &proxypb.RefreshPolicyInfoCacheRequest{
OpType: int32(typeutil.CacheRefresh),
}); err != nil {
log.RatedWarn(60, "fail to refresh policy info cache", zap.Error(err))
return err
}
return nil
}, retry.Attempts(100), retry.Sleep(time.Second)); err != nil {
log.Warn("fail to refresh policy info cache", zap.Error(err))
}
}()
c.startServerLoop()
c.UpdateStateCode(commonpb.StateCode_Healthy)
sessionutil.SaveServerInfo(typeutil.RootCoordRole, c.session.ServerID)
logutil.Logger(c.ctx).Info("rootcoord startup successfully")
return nil
}
func (c *Core) startServerLoop() {
c.wg.Add(3)
go c.startTimeTickLoop()
go c.tsLoop()
go c.chanTimeTick.startWatch(&c.wg)
}
// Start starts RootCoord.
func (c *Core) Start() error {
var err error
if !c.enableActiveStandBy {
c.startOnce.Do(func() {
err = c.startInternal()
})
}
return err
}
func (c *Core) stopExecutor() {
if c.stepExecutor != nil {
c.stepExecutor.Stop()
log.Info("stop rootcoord executor")
}
}
func (c *Core) stopScheduler() {
if c.scheduler != nil {
c.scheduler.Stop()
log.Info("stop rootcoord scheduler")
}
}
func (c *Core) cancelIfNotNil() {
if c.cancel != nil {
c.cancel()
log.Info("cancel rootcoord goroutines")
}
}
func (c *Core) revokeSession() {
if c.session != nil {
// wait at most one second to revoke
c.session.Stop()
log.Info("rootcoord session stop")
}
}
// Stop stops rootCoord.
func (c *Core) Stop() error {
c.UpdateStateCode(commonpb.StateCode_Abnormal)
c.stopExecutor()
c.stopScheduler()
if c.proxyWatcher != nil {
c.proxyWatcher.Stop()
}
if c.quotaCenter != nil {
c.quotaCenter.stop()
}
c.revokeSession()
c.cancelIfNotNil()
c.wg.Wait()
return nil
}
// GetComponentStates get states of components
func (c *Core) GetComponentStates(ctx context.Context, req *milvuspb.GetComponentStatesRequest) (*milvuspb.ComponentStates, error) {
code := c.GetStateCode()
log.Debug("RootCoord current state", zap.String("StateCode", code.String()))
nodeID := common.NotRegisteredID
if c.session != nil && c.session.Registered() {
nodeID = c.session.ServerID
}
return &milvuspb.ComponentStates{
State: &milvuspb.ComponentInfo{
// NodeID: c.session.ServerID, // will race with Core.Register()
NodeID: nodeID,
Role: typeutil.RootCoordRole,
StateCode: code,
ExtraInfo: nil,
},
Status: merr.Success(),
SubcomponentStates: []*milvuspb.ComponentInfo{
{
NodeID: nodeID,
Role: typeutil.RootCoordRole,
StateCode: code,
ExtraInfo: nil,
},
},
}, nil
}
// GetTimeTickChannel get timetick channel name
func (c *Core) GetTimeTickChannel(ctx context.Context, req *internalpb.GetTimeTickChannelRequest) (*milvuspb.StringResponse, error) {
return &milvuspb.StringResponse{
Status: merr.Success(),
Value: Params.CommonCfg.RootCoordTimeTick.GetValue(),
}, nil
}
// GetStatisticsChannel get statistics channel name
func (c *Core) GetStatisticsChannel(ctx context.Context, req *internalpb.GetStatisticsChannelRequest) (*milvuspb.StringResponse, error) {
return &milvuspb.StringResponse{
Status: merr.Success(),
Value: Params.CommonCfg.RootCoordStatistics.GetValue(),
}, nil
}
func (c *Core) CreateDatabase(ctx context.Context, in *milvuspb.CreateDatabaseRequest) (*commonpb.Status, error) {
if err := merr.CheckHealthy(c.GetStateCode()); err != nil {
return merr.Status(err), nil
}
method := "CreateDatabase"
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.TotalLabel).Inc()
tr := timerecord.NewTimeRecorder("CreateDatabase")
log.Ctx(ctx).Info("received request to create database", zap.String("role", typeutil.RootCoordRole),
zap.String("dbName", in.GetDbName()), zap.Int64("msgID", in.GetBase().GetMsgID()))
t := &createDatabaseTask{
baseTask: newBaseTask(ctx, c),
Req: in,
}
if err := c.scheduler.AddTask(t); err != nil {
log.Ctx(ctx).Info("failed to enqueue request to create database",
zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("dbName", in.GetDbName()), zap.Int64("msgID", in.GetBase().GetMsgID()))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return merr.Status(err), nil
}
if err := t.WaitToFinish(); err != nil {
log.Ctx(ctx).Info("failed to create database",
zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("dbName", in.GetDbName()),
zap.Int64("msgID", in.GetBase().GetMsgID()), zap.Uint64("ts", t.GetTs()))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return merr.Status(err), nil
}
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.SuccessLabel).Inc()
metrics.RootCoordDDLReqLatency.WithLabelValues(method).Observe(float64(tr.ElapseSpan().Milliseconds()))
metrics.RootCoordNumOfDatabases.Inc()
log.Ctx(ctx).Info("done to create database", zap.String("role", typeutil.RootCoordRole),
zap.String("dbName", in.GetDbName()),
zap.Int64("msgID", in.GetBase().GetMsgID()), zap.Uint64("ts", t.GetTs()))
return merr.Success(), nil
}
func (c *Core) DropDatabase(ctx context.Context, in *milvuspb.DropDatabaseRequest) (*commonpb.Status, error) {
if err := merr.CheckHealthy(c.GetStateCode()); err != nil {
return merr.Status(err), nil
}
method := "DropDatabase"
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.TotalLabel).Inc()
tr := timerecord.NewTimeRecorder("DropDatabase")
log.Ctx(ctx).Info("received request to drop database", zap.String("role", typeutil.RootCoordRole),
zap.String("dbName", in.GetDbName()), zap.Int64("msgID", in.GetBase().GetMsgID()))
t := &dropDatabaseTask{
baseTask: newBaseTask(ctx, c),
Req: in,
}
if err := c.scheduler.AddTask(t); err != nil {
log.Ctx(ctx).Info("failed to enqueue request to drop database", zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("dbName", in.GetDbName()), zap.Int64("msgID", in.GetBase().GetMsgID()))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return merr.Status(err), nil
}
if err := t.WaitToFinish(); err != nil {
log.Ctx(ctx).Info("failed to drop database", zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("dbName", in.GetDbName()),
zap.Int64("msgID", in.GetBase().GetMsgID()), zap.Uint64("ts", t.GetTs()))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return merr.Status(err), nil
}
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.SuccessLabel).Inc()
metrics.RootCoordDDLReqLatency.WithLabelValues(method).Observe(float64(tr.ElapseSpan().Milliseconds()))
metrics.RootCoordNumOfDatabases.Dec()
metrics.CleanupRootCoordDBMetrics(in.GetDbName())
log.Ctx(ctx).Info("done to drop database", zap.String("role", typeutil.RootCoordRole),
zap.String("dbName", in.GetDbName()), zap.Int64("msgID", in.GetBase().GetMsgID()),
zap.Uint64("ts", t.GetTs()))
return merr.Success(), nil
}
func (c *Core) ListDatabases(ctx context.Context, in *milvuspb.ListDatabasesRequest) (*milvuspb.ListDatabasesResponse, error) {
if err := merr.CheckHealthy(c.GetStateCode()); err != nil {
ret := &milvuspb.ListDatabasesResponse{Status: merr.Status(err)}
return ret, nil
}
method := "ListDatabases"
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.TotalLabel).Inc()
tr := timerecord.NewTimeRecorder("ListDatabases")
log := log.Ctx(ctx).With(zap.Int64("msgID", in.GetBase().GetMsgID()))
log.Info("received request to list databases")
t := &listDatabaseTask{
baseTask: newBaseTask(ctx, c),
Req: in,
Resp: &milvuspb.ListDatabasesResponse{},
}
if err := c.scheduler.AddTask(t); err != nil {
log.Info("failed to enqueue request to list databases", zap.Error(err))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return &milvuspb.ListDatabasesResponse{
Status: merr.Status(err),
}, nil
}
if err := t.WaitToFinish(); err != nil {
log.Info("failed to list databases", zap.Error(err))
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.FailLabel).Inc()
return &milvuspb.ListDatabasesResponse{
Status: merr.Status(err),
}, nil
}
metrics.RootCoordDDLReqCounter.WithLabelValues(method, metrics.SuccessLabel).Inc()
metrics.RootCoordDDLReqLatency.WithLabelValues(method).Observe(float64(tr.ElapseSpan().Milliseconds()))
log.Info("done to list databases", zap.Int("num of databases", len(t.Resp.GetDbNames())))
return t.Resp, nil
}
// CreateCollection create collection
func (c *Core) CreateCollection(ctx context.Context, in *milvuspb.CreateCollectionRequest) (*commonpb.Status, error) {
if err := merr.CheckHealthy(c.GetStateCode()); err != nil {
return merr.Status(err), nil
}
metrics.RootCoordDDLReqCounter.WithLabelValues("CreateCollection", metrics.TotalLabel).Inc()
tr := timerecord.NewTimeRecorder("CreateCollection")
log.Ctx(ctx).Info("received request to create collection",
zap.String("dbName", in.GetDbName()),
zap.String("name", in.GetCollectionName()),
zap.String("role", typeutil.RootCoordRole))
t := &createCollectionTask{
baseTask: newBaseTask(ctx, c),
Req: in,
}
if err := c.scheduler.AddTask(t); err != nil {
log.Ctx(ctx).Info("failed to enqueue request to create collection",
zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("name", in.GetCollectionName()))
metrics.RootCoordDDLReqCounter.WithLabelValues("CreateCollection", metrics.FailLabel).Inc()
return merr.Status(err), nil
}
if err := t.WaitToFinish(); err != nil {
log.Ctx(ctx).Info("failed to create collection",
zap.String("role", typeutil.RootCoordRole),
zap.Error(err),
zap.String("name", in.GetCollectionName()),
zap.Uint64("ts", t.GetTs()))
metrics.RootCoordDDLReqCounter.WithLabelValues("CreateCollection", metrics.FailLabel).Inc()
return merr.Status(err), nil
}
metrics.RootCoordDDLReqCounter.WithLabelValues("CreateCollection", metrics.SuccessLabel).Inc()
metrics.RootCoordDDLReqLatency.WithLabelValues("CreateCollection").Observe(float64(tr.ElapseSpan().Milliseconds()))
metrics.RootCoordDDLReqLatencyInQueue.WithLabelValues("CreateCollection").Observe(float64(t.queueDur.Milliseconds()))
log.Ctx(ctx).Info("done to create collection",
zap.String("role", typeutil.RootCoordRole),
zap.String("name", in.GetCollectionName()),
zap.Uint64("ts", t.GetTs()))
return merr.Success(), nil