cmd: support more cli command

cmd/frpc/sub/reload.go

@@ -0,0 +1,92 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/g"
+)
+
+func init() {
+	rootCmd.AddCommand(reloadCmd)
+}
+
+var reloadCmd = &cobra.Command{
+	Use:   "reload",
+	Short: "Hot-Reload frpc configuration",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeIni, cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = reload()
+		if err != nil {
+			fmt.Printf("frpc reload error: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("reload success\n")
+		return nil
+	},
+}
+
+func reload() error {
+	if g.GlbClientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to use reload feature")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		g.GlbClientCfg.AdminAddr+":"+fmt.Sprintf("%d", g.GlbClientCfg.AdminPort)+"/api/reload", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(g.GlbClientCfg.AdminUser+":"+
+		g.GlbClientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	} else {
+		if resp.StatusCode != 200 {
+			return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		res := &client.GeneralResponse{}
+		err = json.Unmarshal(body, &res)
+		if err != nil {
+			return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+		} else if res.Code != 0 {
+			return fmt.Errorf(res.Msg)
+		}
+	}
+	return nil
+}