first commit

cmd/server/api/api.go

@@ -0,0 +1,59 @@
+package api
+
+import (
+	"fmt"
+	"mirror-sync/pkg/constants"
+	"mirror-sync/pkg/remote/obj"
+	"net/http"
+	"runtime"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+)
+
+type (
+	HTTPServer struct {
+		Server *http.Server
+	}
+)
+
+func NewServer(port int) *HTTPServer {
+	s := &HTTPServer{}
+	router := chi.NewRouter()
+	router.NotFound(func(writer http.ResponseWriter, request *http.Request) {
+		notFound("id not found", writer, request)
+	})
+	router.MethodNotAllowed(func(writer http.ResponseWriter, request *http.Request) {
+		methodNotAllowed(writer, request)
+	})
+	router.Use(middleware.Logger)
+	router.Use(recoverMiddleware)
+	router.Use(middleware.GetHead)
+	router.Use(middleware.Compress(5, "application/gzip"))
+	router.Use(middleware.Heartbeat("/heartbeat"))
+	router.Route("/api", func(routerAPI chi.Router) {
+		routerAPI.Route("/v1", func(r chi.Router) {
+			// Get information about the server
+			r.Get("/version", s.Information)
+			r.Route("/sync", func(r chi.Router) {
+				
+			})
+		})
+	})
+	s.Server = &http.Server{
+		Addr:    fmt.Sprintf(":%d", port),
+		Handler: router,
+	}
+	return s
+}
+
+func (s *HTTPServer) Information(w http.ResponseWriter, r *http.Request) {
+	info := obj.SystemInformation{
+		Version:        constants.Version,
+		APIVersion:     constants.ApiVersion,
+		GoVersion:      runtime.Version(),
+		OSName:         runtime.GOOS,
+		OSArchitecture: runtime.GOARCH,
+	}
+	ok(info, w, r)
+}

cmd/server/api/middlewares.go

@@ -0,0 +1,15 @@
+package api
+
+import "net/http"
+
+func recoverMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			err := recover()
+			if err != nil {
+				internalServerError(w, r)
+			}
+		}()
+		next.ServeHTTP(w, r)
+	})
+}

cmd/server/api/responses.go

@@ -0,0 +1,121 @@
+package api
+
+import (
+	"encoding/json"
+	"log/slog"
+	"mirror-sync/pkg/remote/obj"
+	"net/http"
+	"time"
+)
+
+func internalServerError(w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPError{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusInternalServerError,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Internal Server Error",
+		Message: "The server encountered an unexpected condition that prevented it from fulfilling the request.",
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusInternalServerError)
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}
+
+func notFound(message string, w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPError{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusNotFound,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Not Found",
+		Message: message,
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusNotFound)
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}
+
+func methodNotAllowed(w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPError{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusMethodNotAllowed,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Method Not Allowed",
+		Message: "The server knows the request method, but the target resource doesn't support this method",
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusMethodNotAllowed)
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}
+
+func unauthorized(w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPError{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusUnauthorized,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Unauthorized",
+		Message: "The request has not been completed because it lacks valid authentication credentials for the requested resource.",
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.Header().Add("WWW-Authenticate", "Custom realm=\"loginUserHandler via /api/login\"")
+	w.WriteHeader(http.StatusUnauthorized)
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}
+
+func ok(o interface{}, w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPObject{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusOK,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Data: o,
+	}
+	w.Header().Add("Content-Type", "application/json")
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}
+
+func badRequest(message string, w http.ResponseWriter, r *http.Request) {
+	payload := obj.HTTPError{
+		HTTPCore: obj.HTTPCore{
+			Status:    http.StatusBadRequest,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Bad Request",
+		Message: message,
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusBadRequest)
+	e := json.NewEncoder(w)
+	if err := e.Encode(payload); err != nil {
+		slog.Error(err.Error())
+	}
+}

cmd/server/core/git/git.go

@@ -0,0 +1,73 @@
+package git
+
+import (
+	"fmt"
+
+	"github.com/go-git/go-git/v6"
+	"github.com/go-git/go-git/v6/config"
+	"github.com/go-git/go-git/v6/plumbing/transport"
+	"github.com/go-git/go-git/v6/plumbing/transport/http"
+	"github.com/go-git/go-git/v6/storage/memory"
+)
+
+type (
+	Repository struct {
+		src  string
+		dst  string
+		auth Authentication
+	}
+
+	Authentication interface {
+		Value() transport.AuthMethod
+	}
+
+	TokenAuthentication struct {
+		username string
+		token    string
+	}
+
+	NoAuthentication struct{}
+)
+
+func Sync(r Repository) error {
+	repo, err := git.Clone(memory.NewStorage(), nil, &git.CloneOptions{
+		URL: r.src,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to clone repository from source: %w", err)
+	}
+
+	m, err := repo.CreateRemote(&config.RemoteConfig{
+		Name:   "mirror",
+		Mirror: true,
+		URLs: []string{
+			r.dst,
+		},
+	})
+	if err != nil {
+		return fmt.Errorf("failed to create remote: %w", err)
+	}
+
+	err = m.Push(&git.PushOptions{
+		RemoteName: "mirror",
+		Auth:       r.auth.Value(),
+		RefSpecs:   []config.RefSpec{"+refs/*:refs/*"},
+		Force:      true,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to push to mirror server: %w", err)
+	}
+
+	return nil
+}
+
+func (a TokenAuthentication) Value() transport.AuthMethod {
+	return &http.BasicAuth{
+		Username: a.username,
+		Password: a.token,
+	}
+}
+
+func (NoAuthentication) Value() transport.AuthMethod {
+	return nil
+}

cmd/server/main.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+	"mirror-sync/cmd/server/api"
+	"mirror-sync/pkg/constants"
+	"os"
+	"runtime"
+)
+
+func main() {
+	fmt.Printf("mirror-sync daemon -- v%s.%s.%s\n\n", constants.Version, runtime.GOOS, runtime.GOARCH)
+
+	s := api.NewServer(8080)
+
+	fmt.Println("daemon listening to :8080")
+	if err := s.Server.ListenAndServe(); err != nil {
+		fmt.Fprintln(os.Stderr, "failed to start server:", err.Error())
+		os.Exit(1)
+	}
+}