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
|
// Copyright 2017 Northern.tech AS
//
// 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 apiclient
import (
"net/http"
"github.com/mendersoftware/go-lib-micro/requestid"
ctxhttpheader "github.com/mendersoftware/go-lib-micro/context/httpheader"
)
// maybeSetHeader sets HTTP header `hdr` to value `val` if `val` is not empty or
// the header is not yet set.
func maybeSetHeader(hdrs http.Header, hdr string, val string) {
if val == "" {
return
}
if hdrs.Get(hdr) == "" {
hdrs.Add(hdr, val)
}
}
// HttpApi is an http.Client wrapper tailored to use with mender's APIs.
type HttpApi struct {
}
// Do behaves similarly to http.Client.Do(), but will also automatically add
// mender related headers, if these can be built based on request's context. The
// headers are:
// - X-Mender-RequestId - extracted with requestid.FromContext()
// - Authorization - extracted with httpheader.FromContext()
// If given header is already set, the value from context will not be used
func (a *HttpApi) Do(r *http.Request) (*http.Response, error) {
client := &http.Client{}
ctx := r.Context()
maybeSetHeader(r.Header, requestid.RequestIdHeader,
requestid.FromContext(ctx))
maybeSetHeader(r.Header, "Authorization",
ctxhttpheader.FromContext(ctx, "Authorization"))
return client.Do(r)
}
|
