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
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelrestful // import "go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful"
import (
"net/http"
"go.opentelemetry.io/otel/propagation"
oteltrace "go.opentelemetry.io/otel/trace"
)
// config is used to configure the go-restful middleware.
type config struct {
TracerProvider oteltrace.TracerProvider
Propagators propagation.TextMapPropagator
PublicEndpoint bool
PublicEndpointFn func(*http.Request) bool
}
// Option applies a configuration value.
type Option interface {
apply(*config)
}
type optionFunc func(*config)
func (o optionFunc) apply(c *config) {
o(c)
}
// WithPublicEndpoint configures the Handler to link the span with an incoming
// span context. If this option is not provided, then the association is a child
// association instead of a link.
func WithPublicEndpoint() Option {
return optionFunc(func(c *config) {
c.PublicEndpoint = true
})
}
// WithPropagators specifies propagators to use for extracting
// information from the HTTP requests. If none are specified, global
// ones will be used.
func WithPropagators(propagators propagation.TextMapPropagator) Option {
return optionFunc(func(cfg *config) {
if propagators != nil {
cfg.Propagators = propagators
}
})
}
// WithTracerProvider specifies a tracer provider to use for creating a tracer.
// If none is specified, the global provider is used.
func WithTracerProvider(provider oteltrace.TracerProvider) Option {
return optionFunc(func(cfg *config) {
if provider != nil {
cfg.TracerProvider = provider
}
})
}
// WithPublicEndpointFn runs with every request, and allows conditionally
// configuring the Handler to link the span with an incoming span context. If
// this option is not provided or returns false, then the association is a
// child association instead of a link.
// Note: [WithPublicEndpoint] takes precedence over WithPublicEndpointFn.
func WithPublicEndpointFn(fn func(*http.Request) bool) Option {
return optionFunc(func(c *config) {
c.PublicEndpointFn = fn
})
}
|
