/
main.go
192 lines (159 loc) · 4.76 KB
/
main.go
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package main
import (
"context"
"flag"
"net"
"os"
"os/signal"
"runtime"
"runtime/pprof"
"sync"
"syscall"
"time"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/amazingchow/photon-dance-mapreduce/master"
pb "github.com/amazingchow/photon-dance-mapreduce/pb/api"
"github.com/amazingchow/photon-dance-mapreduce/utils"
)
var (
_ConfigPath = flag.String("conf", "conf/master_conf.json", "worker config")
_Level = flag.String("level", "info", "log level, options [debug info warn error]")
// go tool pprof mapreduce-master-service cpu.prof
_CPUProfile = flag.String("cpuprofile", "", "dump cpu profile")
// go tool pprof mapreduce-master-service mem.prof
_MemProfile = flag.String("memprofile", "", "dump memory profile")
)
type MapReduceIngressServer struct {
executor *master.MasterService
}
func newMapReduceIngressServer(conf *master.ServiceConfig) *MapReduceIngressServer {
return &MapReduceIngressServer{
executor: master.NewMasterService(conf),
}
}
func (mris *MapReduceIngressServer) AddTask(ctx context.Context, req *pb.AddTaskRequest) (*pb.AddTaskResponse, error) {
if len(req.GetTask().GetInputs()) == 0 {
return nil, status.Errorf(codes.InvalidArgument, "empty input")
}
if err := mris.executor.AddTask(ctx, req.GetTask()); err != nil {
return nil, status.Errorf(codes.Unavailable, err.Error())
}
return &pb.AddTaskResponse{}, nil
}
func (mris *MapReduceIngressServer) ListWorkers(ctx context.Context, req *pb.ListWorkersRequest) (*pb.ListWorkersResponse, error) {
return &pb.ListWorkersResponse{}, nil
}
func (mris *MapReduceIngressServer) Intercom(ctx context.Context, req *pb.IntercomRequest) (*pb.IntercomResponse, error) {
reply := pb.IntercomResponse{}
if err := mris.executor.InterComm(ctx, req, &reply); err != nil {
return nil, status.Errorf(codes.Internal, err.Error())
}
return &reply, nil
}
func serverGrpcService(ctx context.Context, mris *MapReduceIngressServer, conf *master.ServiceConfig, stopGroup *sync.WaitGroup, stopCh chan struct{}) {
stopGroup.Add(1)
defer stopGroup.Done()
lis, err := net.Listen("tcp", conf.GRPCEndpoint)
if err != nil {
log.Fatal().Err(err).Msg("failed to start grpc service")
}
opts := []grpc.ServerOption{
grpc.MaxSendMsgSize(64 * 1024 * 1024),
grpc.MaxRecvMsgSize(64 * 1024 * 1024),
}
grpcServer := grpc.NewServer(opts...)
pb.RegisterMapReduceRPCServiceServer(grpcServer, mris)
log.Info().Msgf("grpc service is listening at \x1b[1;31m%s\x1b[0m", conf.GRPCEndpoint)
go func() {
if err := grpcServer.Serve(lis); err != nil {
log.Warn().Err(err)
}
}()
GRPC_LOOP:
for { // nolint
select {
case _, ok := <-stopCh:
{
if !ok {
break GRPC_LOOP
}
}
}
}
grpcServer.GracefulStop()
log.Info().Msg("stop grpc service")
}
func main() {
flag.Parse()
// set logger level
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr, TimeFormat: time.RFC3339})
switch *_Level {
case "debug":
zerolog.SetGlobalLevel(zerolog.DebugLevel)
case "info":
zerolog.SetGlobalLevel(zerolog.InfoLevel)
case "warn":
zerolog.SetGlobalLevel(zerolog.WarnLevel)
case "error":
zerolog.SetGlobalLevel(zerolog.ErrorLevel)
default:
zerolog.SetGlobalLevel(zerolog.InfoLevel)
}
{
if *_CPUProfile != "" {
fd, err := os.Create(*_CPUProfile)
if err != nil {
log.Fatal().Err(err).Msg("failed to create CPU profile file")
}
defer fd.Close()
if err := pprof.StartCPUProfile(fd); err != nil {
log.Fatal().Err(err).Msg("failed to start CPU profile")
}
defer pprof.StopCPUProfile()
}
defer func() {
if *_MemProfile != "" {
fd, err := os.Create(*_MemProfile)
if err != nil {
log.Fatal().Err(err).Msg("failed to create Mem profile file")
}
defer fd.Close()
// get up-to-date statistics
runtime.GC()
if err := pprof.WriteHeapProfile(fd); err != nil {
log.Fatal().Err(err).Msg("failed to start Mem profile")
}
}
}()
}
// load master config
var conf master.ServiceConfig
if err := utils.LoadConfig(*_ConfigPath, &conf); err != nil {
log.Fatal().Err(err).Msgf("failed to load config <%s>", *_ConfigPath)
}
stopGroup := &sync.WaitGroup{}
defer func() {
stopGroup.Wait()
}()
stopCh := make(chan struct{})
mris := newMapReduceIngressServer(&conf)
mris.executor.Start() // nolint
// serve grpc service && http service
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
defer func() {
cancel()
}()
go serverGrpcService(ctx, mris, &conf, stopGroup, stopCh)
// wait for exit signal
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
<-sigCh
// send stop signal to grpc service && http service
close(stopCh)
mris.executor.Stop() // nolint
}