mirror of https://github.com/tikv/client-go.git
138 lines
3.7 KiB
Go
138 lines
3.7 KiB
Go
// Copyright 2021 TiKV Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// NOTE: The code in this file is based on code from the
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// TiDB project, licensed under the Apache License v 2.0
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//
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// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/client/mock_tikv_service_test.go
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//
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package client
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import (
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"context"
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"fmt"
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"net"
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"sync"
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"time"
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"github.com/pingcap/kvproto/pkg/coprocessor"
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"github.com/pingcap/kvproto/pkg/kvrpcpb"
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"github.com/pingcap/kvproto/pkg/tikvpb"
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"github.com/tikv/client-go/v2/internal/logutil"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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)
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type server struct {
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tikvpb.TikvServer
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grpcServer *grpc.Server
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// metaChecker check the metadata of each request. Now only requests
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// which need redirection set it.
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metaChecker struct {
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sync.Mutex
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check func(context.Context) error
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}
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}
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func (s *server) KvPrewrite(ctx context.Context, req *kvrpcpb.PrewriteRequest) (*kvrpcpb.PrewriteResponse, error) {
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if err := s.checkMetadata(ctx); err != nil {
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return nil, err
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}
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return &kvrpcpb.PrewriteResponse{}, nil
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}
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func (s *server) CoprocessorStream(req *coprocessor.Request, ss tikvpb.Tikv_CoprocessorStreamServer) error {
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if err := s.checkMetadata(ss.Context()); err != nil {
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return err
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}
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return ss.Send(&coprocessor.Response{})
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}
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func (s *server) BatchCommands(ss tikvpb.Tikv_BatchCommandsServer) error {
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if err := s.checkMetadata(ss.Context()); err != nil {
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return err
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}
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for {
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req, err := ss.Recv()
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if err != nil {
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logutil.BgLogger().Error("batch commands receive fail", zap.Error(err))
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return err
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}
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responses := make([]*tikvpb.BatchCommandsResponse_Response, 0, len(req.GetRequestIds()))
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for i := 0; i < len(req.GetRequestIds()); i++ {
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responses = append(responses, &tikvpb.BatchCommandsResponse_Response{
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Cmd: &tikvpb.BatchCommandsResponse_Response_Empty{
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Empty: &tikvpb.BatchCommandsEmptyResponse{},
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},
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})
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}
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err = ss.Send(&tikvpb.BatchCommandsResponse{
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Responses: responses,
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RequestIds: req.GetRequestIds(),
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})
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if err != nil {
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logutil.BgLogger().Error("batch commands send fail", zap.Error(err))
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return err
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}
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}
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}
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func (s *server) setMetaChecker(check func(context.Context) error) {
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s.metaChecker.Lock()
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s.metaChecker.check = check
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s.metaChecker.Unlock()
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}
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func (s *server) checkMetadata(ctx context.Context) error {
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s.metaChecker.Lock()
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defer s.metaChecker.Unlock()
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if s.metaChecker.check != nil {
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return s.metaChecker.check(ctx)
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}
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return nil
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}
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func (s *server) Stop() {
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s.grpcServer.Stop()
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}
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// Try to start a gRPC server and retrun the server instance and binded port.
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func startMockTikvService() (*server, int) {
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port := -1
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lis, err := net.Listen("tcp", fmt.Sprintf("%s:%d", "127.0.0.1", 0))
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if err != nil {
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logutil.BgLogger().Error("can't listen", zap.Error(err))
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logutil.BgLogger().Error("can't start mock tikv service because no available ports")
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return nil, port
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}
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port = lis.Addr().(*net.TCPAddr).Port
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server := &server{}
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s := grpc.NewServer(grpc.ConnectionTimeout(time.Minute))
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tikvpb.RegisterTikvServer(s, server)
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server.grpcServer = s
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go func() {
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if err = s.Serve(lis); err != nil {
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logutil.BgLogger().Error(
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"can't serve gRPC requests",
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zap.Error(err),
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)
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}
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}()
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return server, port
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}
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