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package server
import (
"context"
"net"
"google.golang.org/grpc"
"github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
tmnet "github.com/tendermint/tendermint/libs/net"
"github.com/tendermint/tendermint/libs/service"
)
type GRPCServer struct {
service.BaseService
proto string
addr string
listener net.Listener
server *grpc.Server
app types.ABCIApplicationServer
}
// NewGRPCServer returns a new gRPC ABCI server
func NewGRPCServer(logger log.Logger, protoAddr string, app types.ABCIApplicationServer) service.Service {
proto, addr := tmnet.ProtocolAndAddress(protoAddr)
s := &GRPCServer{
proto: proto,
addr: addr,
listener: nil,
app: app,
}
s.BaseService = *service.NewBaseService(logger, "ABCIServer", s)
return s
}
// OnStart starts the gRPC service.
func (s *GRPCServer) OnStart(ctx context.Context) error {
ln, err := net.Listen(s.proto, s.addr)
if err != nil {
return err
}
s.listener = ln
s.server = grpc.NewServer()
types.RegisterABCIApplicationServer(s.server, s.app)
s.Logger.Info("Listening", "proto", s.proto, "addr", s.addr)
go func() {
if err := s.server.Serve(s.listener); err != nil {
s.Logger.Error("Error serving gRPC server", "err", err)
}
}()
return nil
}
// OnStop stops the gRPC server.
func (s *GRPCServer) OnStop() {
s.server.Stop()
}