feat: add backend_v1 migration

backend_v1/providers/cmux/config.go

@@ -0,0 +1,109 @@
+package cmux
+
+import (
+	"fmt"
+	"net"
+	"time"
+
+	"quyun/v2/providers/grpc"
+	"quyun/v2/providers/http"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/soheilhy/cmux"
+	"go.ipao.vip/atom/container"
+	"go.ipao.vip/atom/opt"
+	"golang.org/x/sync/errgroup"
+)
+
+const DefaultPrefix = "Cmux"
+
+func DefaultProvider() container.ProviderContainer {
+	return container.ProviderContainer{
+		Provider: Provide,
+		Options: []opt.Option{
+			opt.Prefix(DefaultPrefix),
+		},
+	}
+}
+
+type Config struct {
+	Host *string
+	Port uint
+}
+
+func (h *Config) Address() string {
+	if h.Host == nil {
+		return fmt.Sprintf(":%d", h.Port)
+	}
+	return fmt.Sprintf("%s:%d", *h.Host, h.Port)
+}
+
+type CMux struct {
+	Http *http.Service
+	Grpc *grpc.Grpc
+	Mux  cmux.CMux
+	Base net.Listener
+}
+
+func (c *CMux) Serve() error {
+	// Protect against slowloris connections when sniffing protocol
+	// Safe even if SetReadTimeout is a no-op in the cmux version in use
+	c.Mux.SetReadTimeout(1 * time.Second)
+
+	addr := ""
+	if c.Base != nil && c.Base.Addr() != nil {
+		addr = c.Base.Addr().String()
+	}
+	log.WithFields(log.Fields{
+		"addr": addr,
+	}).Info("cmux starting")
+
+	// Route classic HTTP/1.x traffic to the HTTP service
+	httpL := c.Mux.Match(cmux.HTTP1Fast())
+
+	// Route gRPC (HTTP/2 with content-type application/grpc) to the gRPC service.
+	// Additionally, send other HTTP/2 traffic to gRPC since Fiber (HTTP) does not serve HTTP/2.
+	grpcL := c.Mux.Match(
+		cmux.HTTP2HeaderField("content-type", "application/grpc"),
+		cmux.HTTP2(),
+	)
+
+	var eg errgroup.Group
+	eg.Go(func() error {
+		log.WithField("addr", addr).Info("grpc serving via cmux")
+		err := c.Grpc.ServeWithListener(grpcL)
+		if err != nil {
+			log.WithError(err).Error("grpc server exited with error")
+		} else {
+			log.Info("grpc server exited")
+		}
+		return err
+	})
+
+	eg.Go(func() error {
+		log.WithField("addr", addr).Info("http serving via cmux")
+		err := c.Http.Listener(httpL)
+		if err != nil {
+			log.WithError(err).Error("http server exited with error")
+		} else {
+			log.Info("http server exited")
+		}
+		return err
+	})
+
+	// Run cmux dispatcher; wait for the first error from any goroutine
+	eg.Go(func() error {
+		err := c.Mux.Serve()
+		if err != nil {
+			log.WithError(err).Error("cmux exited with error")
+		} else {
+			log.Info("cmux exited")
+		}
+		return err
+	})
+	err := eg.Wait()
+	if err == nil {
+		log.Info("cmux and sub-servers exited cleanly")
+	}
+	return err
+}

backend_v1/providers/cmux/provider.go

@@ -0,0 +1,37 @@
+package cmux
+
+import (
+	"net"
+
+	"quyun/v2/providers/grpc"
+	"quyun/v2/providers/http"
+
+	"github.com/soheilhy/cmux"
+	"go.ipao.vip/atom/container"
+	"go.ipao.vip/atom/opt"
+)
+
+func Provide(opts ...opt.Option) error {
+	o := opt.New(opts...)
+	var config Config
+	if err := o.UnmarshalConfig(&config); err != nil {
+		return err
+	}
+	return container.Container.Provide(func(http *http.Service, grpc *grpc.Grpc) (*CMux, error) {
+		l, err := net.Listen("tcp", config.Address())
+		if err != nil {
+			return nil, err
+		}
+
+		mux := &CMux{
+			Http: http,
+			Grpc: grpc,
+			Mux:  cmux.New(l),
+			Base: l,
+		}
+		// Ensure cmux stops accepting new connections on shutdown
+		container.AddCloseAble(func() { _ = l.Close() })
+
+		return mux, nil
+	}, o.DiOptions()...)
+}