optimize the code of the command line (#3614)

pkg/sdk/client/client.go

@@ -0,0 +1,130 @@
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/pkg/util/util"
+)
+
+type Client struct {
+	address  string
+	authUser string
+	authPwd  string
+}
+
+func New(host string, port int) *Client {
+	return &Client{
+		address: net.JoinHostPort(host, strconv.Itoa(port)),
+	}
+}
+
+func (c *Client) SetAuth(user, pwd string) {
+	c.authUser = user
+	c.authPwd = pwd
+}
+
+func (c *Client) GetProxyStatus(name string) (*client.ProxyStatusResp, error) {
+	req, err := http.NewRequest("GET", "http://"+c.address+"/api/status", nil)
+	if err != nil {
+		return nil, err
+	}
+	content, err := c.do(req)
+	if err != nil {
+		return nil, err
+	}
+	allStatus := make(client.StatusResp)
+	if err = json.Unmarshal([]byte(content), &allStatus); err != nil {
+		return nil, fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(content))
+	}
+	for _, pss := range allStatus {
+		for _, ps := range pss {
+			if ps.Name == name {
+				return &ps, nil
+			}
+		}
+	}
+	return nil, fmt.Errorf("no proxy status found")
+}
+
+func (c *Client) GetAllProxyStatus() (client.StatusResp, error) {
+	req, err := http.NewRequest("GET", "http://"+c.address+"/api/status", nil)
+	if err != nil {
+		return nil, err
+	}
+	content, err := c.do(req)
+	if err != nil {
+		return nil, err
+	}
+	allStatus := make(client.StatusResp)
+	if err = json.Unmarshal([]byte(content), &allStatus); err != nil {
+		return nil, fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(content))
+	}
+	return allStatus, nil
+}
+
+func (c *Client) Reload() error {
+	req, err := http.NewRequest("GET", "http://"+c.address+"/api/reload", nil)
+	if err != nil {
+		return err
+	}
+	_, err = c.do(req)
+	return err
+}
+
+func (c *Client) Stop() error {
+	req, err := http.NewRequest("POST", "http://"+c.address+"/api/stop", nil)
+	if err != nil {
+		return err
+	}
+	_, err = c.do(req)
+	return err
+}
+
+func (c *Client) GetConfig() (string, error) {
+	req, err := http.NewRequest("GET", "http://"+c.address+"/api/config", nil)
+	if err != nil {
+		return "", err
+	}
+	return c.do(req)
+}
+
+func (c *Client) UpdateConfig(content string) error {
+	req, err := http.NewRequest("PUT", "http://"+c.address+"/api/config", strings.NewReader(content))
+	if err != nil {
+		return err
+	}
+	_, err = c.do(req)
+	return err
+}
+
+func (c *Client) setAuthHeader(req *http.Request) {
+	if c.authUser != "" || c.authPwd != "" {
+		req.Header.Set("Authorization", util.BasicAuth(c.authUser, c.authPwd))
+	}
+}
+
+func (c *Client) do(req *http.Request) (string, error) {
+	c.setAuthHeader(req)
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return "", fmt.Errorf("api status code [%d]", resp.StatusCode)
+	}
+	buf, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	return string(buf), nil
+}