/
serve.go
69 lines (55 loc) · 1.78 KB
/
serve.go
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package cmd
import (
"net"
"net/http"
"github.com/mvisonneau/approuvez/pkg/certs"
pb "github.com/mvisonneau/approuvez/pkg/protobuf"
"github.com/mvisonneau/approuvez/pkg/server"
"github.com/soheilhy/cmux"
"github.com/gorilla/mux"
log "github.com/sirupsen/logrus"
"github.com/urfave/cli/v2"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
)
// Serve ..
func Serve(ctx *cli.Context) (int, error) {
cfg := configureServer(ctx)
listener, err := net.Listen("tcp", cfg.ListenAddress)
if err != nil {
log.Fatal(err)
}
m := cmux.New(listener)
httpListener := m.Match(cmux.HTTP1Fast())
grpcListener := m.Match(cmux.Any())
srv := server.New(cfg.SlackToken)
g := new(errgroup.Group)
g.Go(func() error { return httpServe(httpListener, srv) })
g.Go(func() error { return grpcServe(grpcListener, srv, cfg.TLS) })
g.Go(func() error { return m.Serve() })
log.Infof("started multiplexed HTTP/gRPC server on %s", cfg.ListenAddress)
return 0, g.Wait()
}
func httpServe(l net.Listener, srv *server.Server) error {
r := mux.NewRouter()
r.HandleFunc("/callbacks/slack", srv.HandleSlackCallback).Methods("POST")
// TODO: Implement better healthchecks..
r.HandleFunc("/health/live", func(rw http.ResponseWriter, r *http.Request) { rw.WriteHeader(http.StatusOK) })
r.HandleFunc("/health/ready", func(rw http.ResponseWriter, r *http.Request) { rw.WriteHeader(http.StatusOK) })
s := &http.Server{Handler: r}
return s.Serve(l)
}
func grpcServe(l net.Listener, srv *server.Server, tlsConfig certs.Config) error {
var s *grpc.Server
if tlsConfig.Disable {
s = grpc.NewServer()
} else {
serverCerts, err := certs.LoadServerCertificates(tlsConfig)
if err != nil {
log.Fatal(err)
}
s = grpc.NewServer(grpc.Creds(serverCerts))
}
pb.RegisterApprouvezServer(s, srv)
return s.Serve(l)
}