/
comm.go
70 lines (66 loc) · 2.22 KB
/
comm.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
package wxcallback
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httputil"
"net/url"
"strings"
"github.com/WeixinCloud/wxcloudrun-wxcomponent/comm/errno"
"github.com/WeixinCloud/wxcloudrun-wxcomponent/comm/log"
"github.com/WeixinCloud/wxcloudrun-wxcomponent/db/dao"
"github.com/WeixinCloud/wxcloudrun-wxcomponent/db/model"
"github.com/gin-gonic/gin"
)
func newReverseProxy(target *url.URL) *httputil.ReverseProxy {
targetQuery := target.RawQuery
director := func(req *http.Request) {
req.URL.Scheme = target.Scheme
req.URL.Host = target.Host
req.Host = target.Host
req.URL.Path = target.Path
if targetQuery == "" || req.URL.RawQuery == "" {
req.URL.RawQuery = targetQuery + req.URL.RawQuery
} else {
req.URL.RawQuery = targetQuery + "&" + req.URL.RawQuery
}
if _, ok := req.Header["User-Agent"]; !ok {
req.Header.Set("User-Agent", "")
}
}
errorHandler := func(rw http.ResponseWriter, req *http.Request, err error) {
log.Errorf("http: proxy error: %v", err)
result, _ := json.Marshal(errno.ErrSystemError.WithData(err.Error()))
rw.Header().Set("Content-Type", "application/json")
rw.Write([]byte(result))
}
return &httputil.ReverseProxy{Director: director, ErrorHandler: errorHandler}
}
func proxyCallbackMsg(infoType string, msgType string, event string, body string, c *gin.Context) (bool, error) {
rule, err := dao.GetWxCallBackRuleWithCache(infoType, msgType, event)
if err != nil {
log.Error(err)
return false, err
}
if rule != nil && rule.Open != 0 && rule.Type == model.PROXYTYPE_HTTP {
var proxyConfig model.HttpProxyConfig
if err = json.Unmarshal([]byte(rule.Info), &proxyConfig); err != nil {
log.Errorf("Unmarshal err, %v", err)
return false, err
}
path := strings.Replace(proxyConfig.Path, "$APPID$", c.Param("appid"), -1)
log.Infof("proxy: %v, real path %s", rule, path)
var target *url.URL
if target, err = url.Parse(fmt.Sprintf("http://127.0.0.1:%d%s", proxyConfig.Port, path)); err != nil {
log.Errorf("url Parse error: %v", err)
return false, err
}
proxy := newReverseProxy(target)
c.Request.Body = ioutil.NopCloser(bytes.NewBuffer([]byte(body)))
proxy.ServeHTTP(c.Writer, c.Request)
return true, nil
}
return false, nil
}