api/logger.go

   1 package api
   2
   3 import (
   4         "fmt"
   5         "strings"
   6         "time"
   7
   8         "github.com/Sirupsen/logrus"
   9         "github.com/gin-gonic/gin"
  10         "github.com/jloup/utils"
  11 )
  12
  13 var log = utils.StandardL().WithField("module", "api")
  14
  15 func Logger() gin.HandlerFunc {
  16         return func(c *gin.Context) {
  17                 path := c.Request.URL.Path
  18                 start := time.Now()
  19                 rawQuery := c.Request.URL.RawQuery
  20
  21                 c.Next()
  22
  23                 latency := time.Now().Sub(start).Round(10 * time.Microsecond)
  24                 code := c.Writer.Status()
  25
  26                 l := log
  27                 l = l.WithField("latency", latency)
  28                 l = l.WithField("client_ip", c.ClientIP())
  29                 l = l.WithField("method", c.Request.Method)
  30                 l = l.WithField("status_code", code)
  31
  32                 if _, exists := c.Get("user"); exists {
  33                         l = l.WithField("user_id", GetUser(c).Id)
  34                 }
  35
  36                 if rawQuery != "" {
  37                         path = fmt.Sprintf("%s?%s", path, rawQuery)
  38                 }
  39
  40                 l = l.WithField("path", path)
  41
  42                 msgLog := fmt.Sprintf("[%v] %d %s '%s'", latency, code, c.Request.Method, path)
  43
  44                 var level logrus.Level
  45                 switch {
  46                 case code >= 200 && code < 400:
  47                         level = logrus.InfoLevel
  48                 case code >= 400 && code < 500:
  49                         level = logrus.WarnLevel
  50                 default:
  51                         level = logrus.ErrorLevel
  52                 }
  53
  54                 comment := c.Errors.ByType(gin.ErrorTypePrivate).String()
  55                 if comment != "" {
  56                         msgLog = fmt.Sprintf("%s: %s", msgLog, strings.TrimSpace(comment))
  57                 }
  58
  59                 l.Logf(level, msgLog)
  60         }
  61 }