-
Notifications
You must be signed in to change notification settings - Fork 492
/
tracing.go
88 lines (74 loc) · 2.14 KB
/
tracing.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
/*
* Copyright (c) 2017, MegaEase
* All rights reserved.
*
* 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 tracing
import (
"context"
"io"
"time"
"github.com/megaease/easegress/pkg/tracing/zipkin"
zipkingo "github.com/openzipkin/zipkin-go"
)
type (
// Spec describes Tracing.
Spec struct {
ServiceName string `yaml:"serviceName" jsonschema:"required"`
Tags map[string]string `yaml:"tags" jsonschema:"omitempty"`
Zipkin *zipkin.Spec `yaml:"zipkin" jsonschema:"omitempty"`
}
// Tracing is the tracing.
Tracing struct {
Tracer *zipkingo.Tracer
tags map[string]string
closer io.Closer
}
noopCloser struct{}
)
// NoopTracing is the tracing doing nothing.
var NoopTracing = &Tracing{
Tracer: zipkin.CreateNoopTracer(),
closer: nil,
}
// New creates a Tracing.
func New(spec *Spec) (*Tracing, error) {
if spec == nil {
return NoopTracing, nil
}
tracer, closer, err := zipkin.New(spec.ServiceName, spec.Zipkin, spec.Tags)
if err != nil {
return nil, err
}
return &Tracing{
Tracer: tracer,
closer: closer,
}, nil
}
// IsNoopTracer checks whether tracer is noop tracer.
func (t *Tracing) IsNoopTracer() bool {
return t == NoopTracing
}
// Close closes Tracing.
func (t *Tracing) Close() error {
if t.closer != nil {
return t.closer.Close()
}
return nil
}
// CreateSpanWithContext creates new span with given name and starttime and adds it to the context.
func CreateSpanWithContext(ctx context.Context, tracing *Tracing, spanName string, startTime time.Time) context.Context {
span := tracing.Tracer.StartSpan(spanName, zipkingo.StartTime(startTime))
return zipkingo.NewContext(ctx, span)
}