/
logger.go
69 lines (63 loc) · 1.59 KB
/
logger.go
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package middleware
import (
"fmt"
"os"
"time"
"github.com/gin-gonic/gin"
"github.com/segmentio/ksuid"
"github.com/sirupsen/logrus"
)
const headerXRequestID = "X-Request-ID"
// Logger is the logrus logger handler
func LoggerWithRequestID(logger logrus.FieldLogger) gin.HandlerFunc {
hostname, err := os.Hostname()
if err != nil {
hostname = "unknown"
}
return func(c *gin.Context) {
// other handler can change c.Path so:
path := c.Request.URL.Path
reqID := c.Request.Header.Get(headerXRequestID)
if reqID == "" {
reqID = ksuid.New().String()
c.Header(headerXRequestID, reqID)
}
start := time.Now()
c.Next()
end := time.Now()
statusCode := c.Writer.Status()
latency := end.Sub(start)
clientIP := c.ClientIP()
clientUserAgent := c.Request.UserAgent()
referer := c.Request.Referer()
dataLength := c.Writer.Size()
if dataLength < 0 {
dataLength = 0
}
entry := logger.WithFields(logrus.Fields{
"hostname": hostname,
"statusCode": statusCode,
"time": end.Format(time.RFC3339),
"latency": latency,
"reqID": reqID,
"clientIP": clientIP,
"method": c.Request.Method,
"path": path,
"referer": referer,
"dataLength": dataLength,
"userAgent": clientUserAgent,
})
if len(c.Errors) > 0 {
entry.Error(c.Errors.ByType(gin.ErrorTypePrivate).String())
} else {
msg := fmt.Sprintf("[%d] %s %s [%d] (%dms)", statusCode, c.Request.Method, path, dataLength, latency)
if statusCode > 499 {
entry.Error(msg)
} else if statusCode > 399 {
entry.Warn(msg)
} else {
entry.Info(msg)
}
}
}
}