Add serve-repo for a minimal embedded micro http server

cmd/serve-repo.go

@@ -0,0 +1,59 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+package cmd
+
+import (
+	"net/http"
+	"os"
+
+	. "github.com/mudler/luet/pkg/logger"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var serverepoCmd = &cobra.Command{
+	Use:   "serve-repo",
+	Short: "Embedded micro-http server",
+	Long:  `Embedded mini http server for serving local repositories`,
+	PreRun: func(cmd *cobra.Command, args []string) {
+		viper.BindPFlag("dir", cmd.Flags().Lookup("dir"))
+		viper.BindPFlag("address", cmd.Flags().Lookup("address"))
+		viper.BindPFlag("port", cmd.Flags().Lookup("port"))
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+
+		dir := viper.GetString("dir")
+		port := viper.GetString("port")
+		address := viper.GetString("address")
+
+		http.Handle("/", http.FileServer(http.Dir(dir)))
+
+		Info("Serving ", dir, " on HTTP port: ", port)
+		Fatal(http.ListenAndServe(address+":"+port, nil))
+	},
+}
+
+func init() {
+	path, err := os.Getwd()
+	if err != nil {
+		Fatal(err)
+	}
+	serverepoCmd.Flags().String("dir", path, "Packages folder (output from build)")
+	serverepoCmd.Flags().String("port", "9090", "Listening port")
+	serverepoCmd.Flags().String("address", "0.0.0.0", "Listening address")
+
+	RootCmd.AddCommand(serverepoCmd)
+}