/
server.go
135 lines (122 loc) · 3.34 KB
/
server.go
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package grpc
import (
"context"
"net"
"net/url"
"github.com/apus-run/sea-kit/log"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
hapi "google.golang.org/grpc/health/grpc_health_v1"
"google.golang.org/grpc/reflection"
"github.com/apus-run/gaia/internal/endpoint"
"github.com/apus-run/gaia/internal/host"
"github.com/apus-run/gaia/middleware"
"github.com/apus-run/gaia/transport"
"google.golang.org/grpc/admin"
)
var (
_ transport.Server = (*Server)(nil)
_ transport.Endpointer = (*Server)(nil)
)
// NewServer creates a gRPC server by options.
func NewServer(opts ...ServerOption) *Server {
srv := defaultServer()
for _, o := range opts {
o(srv)
}
unaryInterceptor := []grpc.UnaryServerInterceptor{
srv.unaryServerInterceptor(),
}
streamInterceptor := []grpc.StreamServerInterceptor{
srv.streamServerInterceptor(),
}
if len(srv.unaryInterceptor) > 0 {
unaryInterceptor = append(unaryInterceptor, srv.unaryInterceptor...)
}
if len(srv.streamInterceptor) > 0 {
streamInterceptor = append(streamInterceptor, srv.streamInterceptor...)
}
grpcOpts := []grpc.ServerOption{
grpc.ChainUnaryInterceptor(unaryInterceptor...),
grpc.ChainStreamInterceptor(streamInterceptor...),
}
if srv.tlsConf != nil {
t, err := srv.tlsConf.Config()
if err != nil {
log.Errorf("TLS Config Error - %v", err)
}
grpcOpts = append(grpcOpts, grpc.Creds(credentials.NewTLS(t)))
}
if len(srv.grpcOpts) > 0 {
grpcOpts = append(grpcOpts, srv.grpcOpts...)
}
srv.Server = grpc.NewServer(grpcOpts...)
// internal register
if !srv.customHealth {
hapi.RegisterHealthServer(srv.Server, srv.health)
}
// register reflection and the interface can be debugged through the grpcurl tool
// https://github.com/grpc/grpc-go/blob/master/Documentation/server-reflection-tutorial.md#enable-server-reflection
// see https://github.com/fullstorydev/grpcurl
reflection.Register(srv.Server)
// admin register
srv.adminClean, _ = admin.Register(srv.Server)
return srv
}
// Use uses a service middleware with selector.
// selector:
// - '/*'
// - '/helloworld.v1.Greeter/*'
// - '/helloworld.v1.Greeter/SayHello'
func (s *Server) Use(selector string, m ...middleware.Middleware) {
s.middleware.Add(selector, m...)
}
// Endpoint return a real address to registry endpoint.
// examples:
//
// grpc://127.0.0.1:9000?isSecure=false
func (s *Server) Endpoint() (*url.URL, error) {
if err := s.listenAndEndpoint(); err != nil {
return nil, s.err
}
return s.endpoint, nil
}
// Start start the gRPC server.
func (s *Server) Start(ctx context.Context) error {
if err := s.listenAndEndpoint(); err != nil {
return s.err
}
s.ctx = ctx
log.Infof("[gRPC] server listening on: %s", s.lis.Addr().String())
s.health.Resume()
return s.Serve(s.lis)
}
// Stop stop the gRPC server.
func (s *Server) Stop(ctx context.Context) error {
if s.adminClean != nil {
s.adminClean()
}
s.health.Shutdown()
s.GracefulStop()
log.Info("[gRPC] server stopping")
return nil
}
func (s *Server) listenAndEndpoint() error {
if s.lis == nil {
lis, err := net.Listen(s.network, s.address)
if err != nil {
s.err = err
return err
}
s.lis = lis
}
if s.endpoint == nil {
addr, err := host.Extract(s.address, s.lis)
if err != nil {
s.err = err
return err
}
s.endpoint = endpoint.NewEndpoint(endpoint.Scheme("grpc", s.tlsConf != nil), addr)
}
return s.err
}