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// Package main implements the generator service, a server that can creates
// Clawflake ID numbers.
package main
import (
"flag"
"net"
generatorpb "go.nicolaspl.com/clawflake/api/nicolaspl/clawflake/generator/v3"
"go.uber.org/zap"
"google.golang.org/grpc"
)
var (
grpcHost *string = flag.String("grpc_host", ":5000", "The host the gRPC server should listen to.")
devMode *bool = flag.Bool("dev", false, "Enables development mode, with more debug logs.")
)
func main() {
flag.Parse()
var logger *zap.Logger
if *devMode {
logger, _ = zap.NewDevelopment()
} else {
logger, _ = zap.NewProduction()
}
defer logger.Sync()
l := logger.Named("generator").With(zap.Bool("dev", *devMode),
zap.String("grpc_host", *grpcHost), zap.Uint("epoch", *epoch),
zap.Uint("machine_id", *machineId))
// Verify 0 <= machineId < 128
if *machineId > 128 {
l.Fatal("Invalid machine_id given, the value should be between 0 and 127 (included).")
return
}
i := NewIdGenerator(l)
// gRPC server
lis, err := net.Listen("tcp", *grpcHost)
if err != nil {
l.Error("failed to listen", zap.Error(err))
return
}
defer lis.Close()
l.Info("server is ready")
gs := grpc.NewServer()
generatorpb.RegisterGeneratorServiceServer(gs, NewGeneratorServiceServer(i, l))
if err := gs.Serve(lis); err != nil {
l.Error("failed to serve gRPC", zap.Error(err))
return
}
}
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