-
Notifications
You must be signed in to change notification settings - Fork 478
/
probabilistic_sampler.go
91 lines (77 loc) · 2.99 KB
/
probabilistic_sampler.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
85
86
87
88
89
90
91
// Package probabilistic_sampler provides an otelcol.processor.probabilistic_sampler component.
package probabilistic_sampler
import (
"github.com/grafana/agent/component"
"github.com/grafana/agent/component/otelcol"
"github.com/grafana/agent/component/otelcol/processor"
otel_service "github.com/grafana/agent/service/otel"
"github.com/grafana/river"
"github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor"
otelcomponent "go.opentelemetry.io/collector/component"
otelextension "go.opentelemetry.io/collector/extension"
)
func init() {
component.Register(component.Registration{
Name: "otelcol.processor.probabilistic_sampler",
Args: Arguments{},
Exports: otelcol.ConsumerExports{},
NeedsServices: []string{otel_service.ServiceName},
Build: func(opts component.Options, args component.Arguments) (component.Component, error) {
fact := probabilisticsamplerprocessor.NewFactory()
return processor.New(opts, fact, args.(Arguments))
},
})
}
// Arguments configures the otelcol.processor.probabilistic_sampler component.
type Arguments struct {
SamplingPercentage float32 `river:"sampling_percentage,attr,optional"`
HashSeed uint32 `river:"hash_seed,attr,optional"`
AttributeSource string `river:"attribute_source,attr,optional"`
FromAttribute string `river:"from_attribute,attr,optional"`
SamplingPriority string `river:"sampling_priority,attr,optional"`
// Output configures where to send processed data. Required.
Output *otelcol.ConsumerArguments `river:"output,block"`
}
var (
_ processor.Arguments = Arguments{}
_ river.Validator = (*Arguments)(nil)
_ river.Defaulter = (*Arguments)(nil)
)
// DefaultArguments holds default settings for Arguments.
var DefaultArguments = Arguments{
AttributeSource: "traceID",
}
// SetToDefault implements river.Defaulter.
func (args *Arguments) SetToDefault() {
*args = DefaultArguments
}
// Validate implements river.Validator.
func (args *Arguments) Validate() error {
cfg, err := args.Convert()
if err != nil {
return err
}
return cfg.(*probabilisticsamplerprocessor.Config).Validate()
}
// Convert implements processor.Arguments.
func (args Arguments) Convert() (otelcomponent.Config, error) {
return &probabilisticsamplerprocessor.Config{
SamplingPercentage: args.SamplingPercentage,
HashSeed: args.HashSeed,
AttributeSource: probabilisticsamplerprocessor.AttributeSource(args.AttributeSource),
FromAttribute: args.FromAttribute,
SamplingPriority: args.SamplingPriority,
}, nil
}
// Extensions implements processor.Arguments.
func (args Arguments) Extensions() map[otelcomponent.ID]otelextension.Extension {
return nil
}
// Exporters implements processor.Arguments.
func (args Arguments) Exporters() map[otelcomponent.DataType]map[otelcomponent.ID]otelcomponent.Component {
return nil
}
// NextConsumers implements processor.Arguments.
func (args Arguments) NextConsumers() *otelcol.ConsumerArguments {
return args.Output
}