/
logging_http_transport.go
84 lines (74 loc) · 2.19 KB
/
logging_http_transport.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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
// Copyright © 2019 The Knative Authors
//
// 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 util
import (
"fmt"
"io"
"net/http"
"net/http/httputil"
"os"
"k8s.io/apimachinery/pkg/util/sets"
)
var (
// sensitiveRequestHeaders are headers that will be redacted when logging requests.
sensitiveRequestHeaders = sets.NewString(
"Authorization",
"WWW-Authenticate",
"Cookie",
"Proxy-Authorization")
)
type LoggingHttpTransport struct {
transport http.RoundTripper
stream io.Writer
}
func NewLoggingTransport(transport http.RoundTripper) http.RoundTripper {
return &LoggingHttpTransport{transport, nil}
}
func NewLoggingTransportWithStream(transport http.RoundTripper, s io.Writer) http.RoundTripper {
return &LoggingHttpTransport{transport, s}
}
func (t *LoggingHttpTransport) RoundTrip(r *http.Request) (*http.Response, error) {
stream := t.stream
if stream == nil {
stream = os.Stderr
}
redacted := http.Header{}
for k, v := range r.Header {
if sensitiveRequestHeaders.Has(k) {
redacted[k] = v
r.Header.Set(k, "********")
}
}
reqBytes, err := httputil.DumpRequestOut(r, true)
if err != nil {
fmt.Fprintln(stream, "error dumping request:", err)
return nil, fmt.Errorf("dumping request: %w", err)
}
fmt.Fprintln(stream, "===== REQUEST =====")
fmt.Fprintln(stream, string(reqBytes))
for k, v := range redacted {
r.Header[k] = v
}
resp, err := t.transport.RoundTrip(r)
if err != nil {
fmt.Fprintln(stream, "===== ERROR =====")
fmt.Fprintln(stream, err)
} else {
respBytes, _ := httputil.DumpResponse(resp, true)
fmt.Fprintln(stream, "===== RESPONSE =====")
fmt.Fprintln(stream, string(respBytes))
fmt.Fprintln(stream, " * * * * * *")
}
return resp, err
}