mirror of https://github.com/milvus-io/milvus.git
277 lines
8.2 KiB
Go
277 lines
8.2 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 grpcdatanode
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"math"
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"net"
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"strconv"
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"sync"
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"time"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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dn "github.com/milvus-io/milvus/internal/datanode"
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dsc "github.com/milvus-io/milvus/internal/distributed/datacoord/client"
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rcc "github.com/milvus-io/milvus/internal/distributed/rootcoord/client"
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grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
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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/datapb"
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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/types"
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"github.com/milvus-io/milvus/internal/util/funcutil"
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"github.com/milvus-io/milvus/internal/util/retry"
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"github.com/milvus-io/milvus/internal/util/trace"
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)
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type Server struct {
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datanode *dn.DataNode
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wg sync.WaitGroup
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grpcErrChan chan error
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grpcServer *grpc.Server
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ctx context.Context
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cancel context.CancelFunc
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msFactory msgstream.Factory
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rootCoord types.RootCoord
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dataCoord types.DataCoord
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newRootCoordClient func(string, []string, ...retry.Option) (types.RootCoord, error)
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newDataCoordClient func(string, []string, ...retry.Option) (types.DataCoord, error)
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closer io.Closer
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}
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// NewServer new data node grpc server
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func NewServer(ctx context.Context, factory msgstream.Factory) (*Server, error) {
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ctx1, cancel := context.WithCancel(ctx)
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var s = &Server{
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ctx: ctx1,
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cancel: cancel,
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msFactory: factory,
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grpcErrChan: make(chan error),
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newRootCoordClient: func(etcdMetaRoot string, etcdEndpoints []string, retryOptions ...retry.Option) (types.RootCoord, error) {
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return rcc.NewClient(ctx1, etcdMetaRoot, etcdEndpoints, retryOptions...)
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},
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newDataCoordClient: func(etcdMetaRoot string, etcdEndpoints []string, retryOptions ...retry.Option) (types.DataCoord, error) {
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return dsc.NewClient(ctx1, etcdMetaRoot, etcdEndpoints, retryOptions...)
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},
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}
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s.datanode = dn.NewDataNode(s.ctx, s.msFactory)
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return s, nil
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}
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func (s *Server) startGrpc() error {
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s.wg.Add(1)
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go s.startGrpcLoop(Params.listener)
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// wait for grpc server loop start
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err := <-s.grpcErrChan
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return err
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}
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func (s *Server) startGrpcLoop(listener net.Listener) {
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defer s.wg.Done()
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opts := trace.GetInterceptorOpts()
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s.grpcServer = grpc.NewServer(
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grpc.MaxRecvMsgSize(math.MaxInt32),
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grpc.MaxSendMsgSize(math.MaxInt32),
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grpc.UnaryInterceptor(
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grpc_opentracing.UnaryServerInterceptor(opts...)),
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grpc.StreamInterceptor(
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grpc_opentracing.StreamServerInterceptor(opts...)))
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datapb.RegisterDataNodeServer(s.grpcServer, s)
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ctx, cancel := context.WithCancel(s.ctx)
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defer cancel()
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go funcutil.CheckGrpcReady(ctx, s.grpcErrChan)
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if err := s.grpcServer.Serve(listener); err != nil {
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log.Warn("DataNode Start Grpc Failed!")
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s.grpcErrChan <- err
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}
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}
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func (s *Server) SetRootCoordInterface(ms types.RootCoord) error {
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return s.datanode.SetRootCoordInterface(ms)
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}
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func (s *Server) SetDataCoordInterface(ds types.DataCoord) error {
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return s.datanode.SetDataCoordInterface(ds)
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}
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func (s *Server) Run() error {
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if err := s.init(); err != nil {
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return err
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}
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log.Debug("data node init done ...")
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if err := s.start(); err != nil {
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return err
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}
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log.Debug("data node start done ...")
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return nil
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}
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func (s *Server) Stop() error {
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if s.closer != nil {
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if err := s.closer.Close(); err != nil {
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return err
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}
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}
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s.cancel()
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if s.grpcServer != nil {
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s.grpcServer.GracefulStop()
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}
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err := s.datanode.Stop()
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if err != nil {
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return err
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}
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s.wg.Wait()
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return nil
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}
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func (s *Server) init() error {
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ctx := context.Background()
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Params.Init()
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Params.LoadFromEnv()
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Params.LoadFromArgs()
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dn.Params.Init()
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dn.Params.Port = Params.Port
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dn.Params.IP = Params.IP
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closer := trace.InitTracing(fmt.Sprintf("data_node ip: %s, port: %d", Params.IP, Params.Port))
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s.closer = closer
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addr := Params.IP + ":" + strconv.Itoa(Params.Port)
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log.Debug("DataNode address", zap.String("address", addr))
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err := s.startGrpc()
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if err != nil {
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return err
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}
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// --- RootCoord Client ---
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if s.newRootCoordClient != nil {
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log.Debug("RootCoord address", zap.String("address", Params.RootCoordAddress))
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log.Debug("Init root coord client ...")
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rootCoordClient, err := s.newRootCoordClient(dn.Params.MetaRootPath, dn.Params.EtcdEndpoints, retry.Attempts(300))
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if err != nil {
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log.Debug("DataNode newRootCoordClient failed", zap.Error(err))
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panic(err)
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}
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if err = rootCoordClient.Init(); err != nil {
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log.Debug("DataNode rootCoordClient Init failed", zap.Error(err))
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panic(err)
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}
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if err = rootCoordClient.Start(); err != nil {
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log.Debug("DataNode rootCoordClient Start failed", zap.Error(err))
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panic(err)
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}
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err = funcutil.WaitForComponentHealthy(ctx, rootCoordClient, "RootCoord", 1000000, time.Millisecond*200)
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if err != nil {
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log.Debug("DataNode wait rootCoord ready failed", zap.Error(err))
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panic(err)
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}
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log.Debug("DataNode rootCoord is ready")
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if err = s.SetRootCoordInterface(rootCoordClient); err != nil {
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panic(err)
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}
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}
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// --- Data Server Client ---
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if s.newDataCoordClient != nil {
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log.Debug("Data service address", zap.String("address", Params.DataCoordAddress))
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log.Debug("DataNode Init data service client ...")
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dataCoordClient, err := s.newDataCoordClient(dn.Params.MetaRootPath, dn.Params.EtcdEndpoints, retry.Attempts(300))
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if err != nil {
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log.Debug("DataNode newDataCoordClient failed", zap.Error(err))
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panic(err)
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}
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if err = dataCoordClient.Init(); err != nil {
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log.Debug("DataNode newDataCoord failed", zap.Error(err))
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panic(err)
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}
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if err = dataCoordClient.Start(); err != nil {
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log.Debug("DataNode dataCoordClient Start failed", zap.Error(err))
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panic(err)
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}
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err = funcutil.WaitForComponentInitOrHealthy(ctx, dataCoordClient, "DataCoord", 1000000, time.Millisecond*200)
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if err != nil {
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log.Debug("DataNode wait dataCoordClient ready failed", zap.Error(err))
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panic(err)
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}
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log.Debug("DataNode dataCoord is ready")
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if err = s.SetDataCoordInterface(dataCoordClient); err != nil {
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panic(err)
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}
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}
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s.datanode.NodeID = dn.Params.NodeID
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s.datanode.UpdateStateCode(internalpb.StateCode_Initializing)
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if err := s.datanode.Init(); err != nil {
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log.Warn("datanode init error: ", zap.Error(err))
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return err
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}
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log.Debug("DataNode", zap.Any("State", internalpb.StateCode_Initializing))
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return nil
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}
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func (s *Server) start() error {
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if err := s.datanode.Start(); err != nil {
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return err
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}
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err := s.datanode.Register()
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if err != nil {
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log.Debug("DataNode Register etcd failed", zap.Error(err))
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return err
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}
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return nil
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}
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func (s *Server) GetComponentStates(ctx context.Context, req *internalpb.GetComponentStatesRequest) (*internalpb.ComponentStates, error) {
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return s.datanode.GetComponentStates(ctx)
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}
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func (s *Server) GetStatisticsChannel(ctx context.Context, req *internalpb.GetStatisticsChannelRequest) (*milvuspb.StringResponse, error) {
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return s.datanode.GetStatisticsChannel(ctx)
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}
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func (s *Server) WatchDmChannels(ctx context.Context, req *datapb.WatchDmChannelsRequest) (*commonpb.Status, error) {
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return s.datanode.WatchDmChannels(ctx, req)
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}
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func (s *Server) FlushSegments(ctx context.Context, req *datapb.FlushSegmentsRequest) (*commonpb.Status, error) {
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if s.datanode.State.Load().(internalpb.StateCode) != internalpb.StateCode_Healthy {
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return &commonpb.Status{
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ErrorCode: commonpb.ErrorCode_UnexpectedError,
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Reason: "DataNode isn't healthy.",
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}, errors.New("DataNode is not ready yet")
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}
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return s.datanode.FlushSegments(ctx, req)
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}
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