forked from TheThingsNetwork/lorawan-stack
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathlog.go
More file actions
85 lines (76 loc) · 2.54 KB
/
log.go
File metadata and controls
85 lines (76 loc) · 2.54 KB
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
// Copyright © 2020 The Things Network Foundation, The Things Industries B.V.
//
// 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 webmiddleware
import (
"net"
"net/http"
"github.com/felixge/httpsnoop"
"go.thethings.network/lorawan-stack/v3/pkg/log"
"go.thethings.network/lorawan-stack/v3/pkg/webhandlers"
)
// Log returns a middleware that logs requests.
// If logger is nil, the logger will be extracted from the context.
func Log(logger log.Interface, ignorePathsArray []string) MiddlewareFunc {
ignorePaths := make(map[string]struct{})
for _, path := range ignorePathsArray {
ignorePaths[path] = struct{}{}
}
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
remoteAddr, _, err := net.SplitHostPort(r.RemoteAddr)
if err != nil {
remoteAddr = r.RemoteAddr
}
if xRealIP := r.Header.Get("X-Real-Ip"); xRealIP != "" {
remoteAddr = xRealIP
}
logFields := log.Fields(
"method", r.Method,
"url", r.URL.String(),
"remote_addr", remoteAddr,
"request_id", r.Header.Get(requestIDHeader),
)
ctx, getError := webhandlers.NewContextWithErrorValue(r.Context())
requestLogger := logger
if requestLogger == nil {
requestLogger = log.FromContext(ctx)
}
requestLogger = requestLogger.WithFields(logFields)
r = r.WithContext(log.NewContext(ctx, requestLogger))
metrics := httpsnoop.CaptureMetrics(next, w, r)
if metrics.Code < 400 {
if _, ignore := ignorePaths[r.URL.Path]; ignore {
return
}
}
logFields = logFields.With(map[string]interface{}{
"status": metrics.Code,
"duration": metrics.Duration,
"response_size": metrics.Written,
})
if err := getError(); err != nil {
logFields = logFields.WithError(err)
}
requestLogger = requestLogger.WithFields(logFields)
switch {
case metrics.Code >= 500:
requestLogger.Error("Server error")
case metrics.Code >= 400:
requestLogger.Info("Client error")
default:
requestLogger.Info("Request handled")
}
})
}
}