Move restore repo to internal router and invoke from command to avoid open the same db file or queues files (#15790)

* Move restore repo to internal router and invoke from command to avoid open the same db file or queues files

* Follow @zeripath's review

* set no timeout for resotre repo private request

* make restore repo cancelable

routers/private/internal.go

@@ -69,6 +69,7 @@ func Routes() *web.Route {
 	r.Post("/manager/add-logger", bind(private.LoggerOptions{}), AddLogger)
 	r.Post("/manager/remove-logger/{group}/{name}", RemoveLogger)
 	r.Post("/mail/send", SendEmail)
+	r.Post("/restore_repo", RestoreRepo)
 
 	return r
 }

routers/private/restore_repo.go

@@ -0,0 +1,51 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package private
+
+import (
+	"io/ioutil"
+
+	myCtx "code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/migrations"
+	jsoniter "github.com/json-iterator/go"
+)
+
+// RestoreRepo restore a repository from data
+func RestoreRepo(ctx *myCtx.PrivateContext) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
+	bs, err := ioutil.ReadAll(ctx.Req.Body)
+	if err != nil {
+		ctx.JSON(500, map[string]string{
+			"err": err.Error(),
+		})
+		return
+	}
+	var params = struct {
+		RepoDir   string
+		OwnerName string
+		RepoName  string
+		Units     []string
+	}{}
+	if err = json.Unmarshal(bs, &params); err != nil {
+		ctx.JSON(500, map[string]string{
+			"err": err.Error(),
+		})
+		return
+	}
+
+	if err := migrations.RestoreRepository(
+		ctx.Req.Context(),
+		params.RepoDir,
+		params.OwnerName,
+		params.RepoName,
+		params.Units,
+	); err != nil {
+		ctx.JSON(500, map[string]string{
+			"err": err.Error(),
+		})
+	} else {
+		ctx.Status(200)
+	}
+}