-
Notifications
You must be signed in to change notification settings - Fork 3
/
cross_service_inject.go
60 lines (53 loc) · 1.59 KB
/
cross_service_inject.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
package otelKit
import (
"context"
"github.com/richelieu-yang/chimera/v3/src/core/errorKit"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/baggage"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
"net/http"
)
// InjectIntoRequest 使用 baggage 写入 trace id 和 span id(实际上是写到 Header 中).
/*
PS:
(1) 需要先 set up;
(2) 适用场景: 跨服务(跨应用通讯) + 发送端.
*/
func InjectIntoRequest(r *http.Request, spanCtx context.Context, span trace.Span) error {
carrier := propagation.HeaderCarrier(r.Header)
return injectWithCarrier(carrier, spanCtx, span)
}
// InjectIntoMap
/*
PS:
(1) 需要先 set up;
(2) 适用场景: 跨服务(跨应用通讯) + 发送端.
*/
func InjectIntoMap(m map[string]string, spanCtx context.Context, span trace.Span) error {
carrier := propagation.MapCarrier(m)
return injectWithCarrier(carrier, spanCtx, span)
}
func injectWithCarrier(carrier propagation.TextMapCarrier, spanCtx context.Context, span trace.Span) (err error) {
defer func() {
if err != nil {
err = errorKit.Wrapf(err, "fail to inject baggage")
}
}()
traceMember, err := baggage.NewMember(KeyTraceId, span.SpanContext().TraceID().String())
if err != nil {
return
}
spanMember, err := baggage.NewMember(KeySpanId, span.SpanContext().SpanID().String())
if err != nil {
return
}
b, err := baggage.New(traceMember, spanMember)
if err != nil {
return
}
baggageCtx := baggage.ContextWithBaggage(spanCtx, b)
//propagation.Baggage{}.Inject(baggageCtx, carrier)
otel.GetTextMapPropagator().Inject(baggageCtx, carrier)
return
}