mirror of
https://gitee.com/milvus-io/milvus.git
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430 lines
11 KiB
Go
430 lines
11 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package proxy
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import (
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"context"
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"errors"
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"fmt"
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"math/rand"
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"sync"
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"sync/atomic"
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"time"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/allocator"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/msgstream"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/internalpb"
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"github.com/milvus-io/milvus/internal/proto/milvuspb"
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"github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/types"
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"github.com/milvus-io/milvus/internal/util/funcutil"
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"github.com/milvus-io/milvus/internal/util/sessionutil"
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"github.com/milvus-io/milvus/internal/util/typeutil"
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)
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type UniqueID = typeutil.UniqueID
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type Timestamp = typeutil.Timestamp
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const sendTimeTickMsgInterval = 200 * time.Millisecond
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const channelMgrTickerInterval = 100 * time.Millisecond
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type Proxy struct {
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ctx context.Context
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cancel func()
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wg sync.WaitGroup
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initParams *internalpb.InitParams
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ip string
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port int
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stateCode atomic.Value
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rootCoord types.RootCoord
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indexCoord types.IndexCoord
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dataCoord types.DataCoord
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queryCoord types.QueryCoord
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chMgr channelsMgr
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sched *TaskScheduler
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tick *timeTick
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chTicker channelsTimeTicker
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idAllocator *allocator.IDAllocator
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tsoAllocator *TimestampAllocator
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segAssigner *SegIDAssigner
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session *sessionutil.Session
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msFactory msgstream.Factory
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// Add callback functions at different stages
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startCallbacks []func()
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closeCallbacks []func()
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}
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func NewProxy(ctx context.Context, factory msgstream.Factory) (*Proxy, error) {
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rand.Seed(time.Now().UnixNano())
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ctx1, cancel := context.WithCancel(ctx)
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node := &Proxy{
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ctx: ctx1,
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cancel: cancel,
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msFactory: factory,
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}
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node.UpdateStateCode(internalpb.StateCode_Abnormal)
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log.Debug("Proxy", zap.Any("State", node.stateCode.Load()))
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return node, nil
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}
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// Register register proxy at etcd
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func (node *Proxy) Register() error {
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node.session = sessionutil.NewSession(node.ctx, Params.MetaRootPath, Params.EtcdEndpoints)
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node.session.Init(typeutil.ProxyRole, Params.NetworkAddress, false)
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Params.ProxyID = node.session.ServerID
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return nil
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}
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func (node *Proxy) Init() error {
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// wait for datacoord state changed to Healthy
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if node.dataCoord != nil {
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log.Debug("Proxy wait for dataCoord ready")
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err := funcutil.WaitForComponentHealthy(node.ctx, node.dataCoord, "DataCoord", 1000000, time.Millisecond*200)
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if err != nil {
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log.Debug("Proxy wait for dataCoord ready failed", zap.Error(err))
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return err
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}
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log.Debug("Proxy dataCoord is ready")
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}
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// wait for queryService state changed to Healthy
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if node.queryCoord != nil {
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log.Debug("Proxy wait for queryCoord ready")
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err := funcutil.WaitForComponentHealthy(node.ctx, node.queryCoord, "QueryCoord", 1000000, time.Millisecond*200)
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if err != nil {
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log.Debug("Proxy wait for queryCoord ready failed", zap.Error(err))
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return err
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}
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log.Debug("Proxy queryCoord is ready")
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}
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// wait for indexcoord state changed to Healthy
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if node.indexCoord != nil {
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log.Debug("Proxy wait for indexCoord ready")
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err := funcutil.WaitForComponentHealthy(node.ctx, node.indexCoord, "IndexCoord", 1000000, time.Millisecond*200)
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if err != nil {
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log.Debug("Proxy wait for indexCoord ready failed", zap.Error(err))
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return err
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}
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log.Debug("Proxy indexCoord is ready")
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}
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if node.queryCoord != nil {
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resp, err := node.queryCoord.CreateQueryChannel(node.ctx, &querypb.CreateQueryChannelRequest{})
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if err != nil {
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log.Debug("Proxy CreateQueryChannel failed", zap.Error(err))
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return err
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}
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if resp.Status.ErrorCode != commonpb.ErrorCode_Success {
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log.Debug("Proxy CreateQueryChannel failed", zap.String("reason", resp.Status.Reason))
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return errors.New(resp.Status.Reason)
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}
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log.Debug("Proxy CreateQueryChannel success")
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Params.SearchResultChannelNames = []string{resp.ResultChannel}
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Params.RetrieveResultChannelNames = []string{resp.ResultChannel}
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log.Debug("Proxy CreateQueryChannel success", zap.Any("SearchResultChannelNames", Params.SearchResultChannelNames))
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log.Debug("Proxy CreateQueryChannel success", zap.Any("RetrieveResultChannelNames", Params.RetrieveResultChannelNames))
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}
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m := map[string]interface{}{
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"PulsarAddress": Params.PulsarAddress,
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"PulsarBufSize": 1024}
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err := node.msFactory.SetParams(m)
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if err != nil {
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return err
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}
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idAllocator, err := allocator.NewIDAllocator(node.ctx, Params.MetaRootPath, Params.EtcdEndpoints)
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if err != nil {
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return err
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}
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node.idAllocator = idAllocator
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node.idAllocator.PeerID = Params.ProxyID
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tsoAllocator, err := NewTimestampAllocator(node.ctx, node.rootCoord, Params.ProxyID)
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if err != nil {
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return err
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}
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node.tsoAllocator = tsoAllocator
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segAssigner, err := NewSegIDAssigner(node.ctx, node.dataCoord, node.lastTick)
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if err != nil {
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panic(err)
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}
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node.segAssigner = segAssigner
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node.segAssigner.PeerID = Params.ProxyID
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getDmlChannelsFunc := func(collectionID UniqueID) (map[vChan]pChan, error) {
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req := &milvuspb.DescribeCollectionRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_DescribeCollection,
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MsgID: 0, // todo
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Timestamp: 0, // todo
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SourceID: 0, // todo
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},
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DbName: "", // todo
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CollectionName: "", // todo
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CollectionID: collectionID,
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TimeStamp: 0, // todo
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}
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resp, err := node.rootCoord.DescribeCollection(node.ctx, req)
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if err != nil {
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log.Warn("DescribeCollection", zap.Error(err))
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return nil, err
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}
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if resp.Status.ErrorCode != 0 {
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log.Warn("DescribeCollection",
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zap.Any("ErrorCode", resp.Status.ErrorCode),
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zap.Any("Reason", resp.Status.Reason))
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return nil, err
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}
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if len(resp.VirtualChannelNames) != len(resp.PhysicalChannelNames) {
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err := fmt.Errorf(
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"len(VirtualChannelNames): %v, len(PhysicalChannelNames): %v",
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len(resp.VirtualChannelNames),
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len(resp.PhysicalChannelNames))
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log.Warn("GetDmlChannels", zap.Error(err))
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return nil, err
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}
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ret := make(map[vChan]pChan)
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for idx, name := range resp.VirtualChannelNames {
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if _, ok := ret[name]; ok {
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err := fmt.Errorf(
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"duplicated virtual channel found, vchan: %v, pchan: %v",
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name,
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resp.PhysicalChannelNames[idx])
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return nil, err
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}
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ret[name] = resp.PhysicalChannelNames[idx]
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}
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return ret, nil
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}
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getDqlChannelsFunc := func(collectionID UniqueID) (map[vChan]pChan, error) {
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req := &querypb.CreateQueryChannelRequest{
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CollectionID: collectionID,
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ProxyID: node.session.ServerID,
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}
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resp, err := node.queryCoord.CreateQueryChannel(node.ctx, req)
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if err != nil {
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return nil, err
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}
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if resp.Status.ErrorCode != commonpb.ErrorCode_Success {
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return nil, errors.New(resp.Status.Reason)
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}
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m := make(map[vChan]pChan)
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m[resp.RequestChannel] = resp.RequestChannel
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return m, nil
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}
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chMgr := newChannelsMgr(getDmlChannelsFunc, defaultInsertRepackFunc, getDqlChannelsFunc, nil, node.msFactory)
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node.chMgr = chMgr
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node.sched, err = NewTaskScheduler(node.ctx, node.idAllocator, node.tsoAllocator, node.msFactory)
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if err != nil {
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return err
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}
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node.tick = newTimeTick(node.ctx, node.tsoAllocator, time.Millisecond*200, node.sched.TaskDoneTest, node.msFactory)
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node.chTicker = newChannelsTimeTicker(node.ctx, channelMgrTickerInterval, []string{}, node.sched.getPChanStatistics, tsoAllocator)
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return nil
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}
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func (node *Proxy) sendChannelsTimeTickLoop() {
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node.wg.Add(1)
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go func() {
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defer node.wg.Done()
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// TODO(dragondriver): read this from config
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timer := time.NewTicker(sendTimeTickMsgInterval)
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for {
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select {
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case <-node.ctx.Done():
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return
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case <-timer.C:
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ts, err := node.tsoAllocator.AllocOne()
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if err != nil {
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log.Warn("Failed to get timestamp from tso", zap.Error(err))
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continue
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}
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stats, err := node.chTicker.getMinTsStatistics()
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if err != nil {
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log.Warn("sendChannelsTimeTickLoop.getMinTsStatistics", zap.Error(err))
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continue
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}
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channels := make([]pChan, 0, len(stats))
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tss := make([]Timestamp, 0, len(stats))
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maxTs := ts
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for channel, ts := range stats {
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channels = append(channels, channel)
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tss = append(tss, ts)
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if ts > maxTs {
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maxTs = ts
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}
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}
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log.Debug("send timestamp statistics of pchan", zap.Any("channels", channels), zap.Any("tss", tss))
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req := &internalpb.ChannelTimeTickMsg{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_TimeTick, // todo
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MsgID: 0, // todo
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Timestamp: 0, // todo
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SourceID: node.session.ServerID,
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},
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ChannelNames: channels,
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Timestamps: tss,
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DefaultTimestamp: maxTs,
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}
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status, err := node.rootCoord.UpdateChannelTimeTick(node.ctx, req)
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if err != nil {
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log.Warn("sendChannelsTimeTickLoop.UpdateChannelTimeTick", zap.Error(err))
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continue
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}
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if status.ErrorCode != 0 {
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log.Warn("sendChannelsTimeTickLoop.UpdateChannelTimeTick",
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zap.Any("ErrorCode", status.ErrorCode),
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zap.Any("Reason", status.Reason))
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continue
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}
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}
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}
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}()
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}
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func (node *Proxy) Start() error {
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err := InitMetaCache(node.rootCoord)
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if err != nil {
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return err
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}
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log.Debug("init global meta cache ...")
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node.sched.Start()
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log.Debug("start scheduler ...")
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node.idAllocator.Start()
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log.Debug("start id allocator ...")
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node.segAssigner.Start()
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log.Debug("start seg assigner ...")
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node.tick.Start()
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log.Debug("start time tick ...")
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err = node.chTicker.start()
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if err != nil {
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return err
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}
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log.Debug("start channelsTimeTicker")
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node.sendChannelsTimeTickLoop()
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// Start callbacks
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for _, cb := range node.startCallbacks {
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cb()
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}
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node.UpdateStateCode(internalpb.StateCode_Healthy)
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log.Debug("Proxy", zap.Any("State", node.stateCode.Load()))
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return nil
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}
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func (node *Proxy) Stop() error {
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node.cancel()
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if node.idAllocator != nil {
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node.idAllocator.Close()
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}
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if node.segAssigner != nil {
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node.segAssigner.Close()
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}
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if node.sched != nil {
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node.sched.Close()
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}
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if node.tick != nil {
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node.tick.Close()
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}
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if node.chTicker != nil {
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err := node.chTicker.close()
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if err != nil {
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return err
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}
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}
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node.wg.Wait()
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for _, cb := range node.closeCallbacks {
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cb()
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}
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return nil
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}
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// AddStartCallback adds a callback in the startServer phase.
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func (node *Proxy) AddStartCallback(callbacks ...func()) {
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node.startCallbacks = append(node.startCallbacks, callbacks...)
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}
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func (node *Proxy) lastTick() Timestamp {
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return node.tick.LastTick()
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}
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// AddCloseCallback adds a callback in the Close phase.
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func (node *Proxy) AddCloseCallback(callbacks ...func()) {
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node.closeCallbacks = append(node.closeCallbacks, callbacks...)
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}
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func (node *Proxy) SetRootCoordClient(cli types.RootCoord) {
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node.rootCoord = cli
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}
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func (node *Proxy) SetIndexCoordClient(cli types.IndexCoord) {
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node.indexCoord = cli
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}
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func (node *Proxy) SetDataCoordClient(cli types.DataCoord) {
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node.dataCoord = cli
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}
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func (node *Proxy) SetQueryCoordClient(cli types.QueryCoord) {
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node.queryCoord = cli
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}
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