blob: 1957d6b1e3a37053ff5a5aa92191b574c2ffa06f (
plain)
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
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package exemplar // import "go.opentelemetry.io/otel/sdk/metric/internal/exemplar"
import "math"
// ValueType identifies the type of value used in exemplar data.
type ValueType uint8
const (
// UnknownValueType should not be used. It represents a misconfigured
// Value.
UnknownValueType ValueType = 0
// Int64ValueType represents a Value with int64 data.
Int64ValueType ValueType = 1
// Float64ValueType represents a Value with float64 data.
Float64ValueType ValueType = 2
)
// Value is the value of data held by an exemplar.
type Value struct {
t ValueType
val uint64
}
// NewValue returns a new [Value] for the provided value.
func NewValue[N int64 | float64](value N) Value {
switch v := any(value).(type) {
case int64:
return Value{t: Int64ValueType, val: uint64(v)}
case float64:
return Value{t: Float64ValueType, val: math.Float64bits(v)}
}
return Value{}
}
// Type returns the [ValueType] of data held by v.
func (v Value) Type() ValueType { return v.t }
// Int64 returns the value of v as an int64. If the ValueType of v is not an
// Int64ValueType, 0 is returned.
func (v Value) Int64() int64 {
if v.t == Int64ValueType {
// Assumes the correct int64 was stored in v.val based on type.
return int64(v.val) // nolint: gosec
}
return 0
}
// Float64 returns the value of v as an float64. If the ValueType of v is not
// an Float64ValueType, 0 is returned.
func (v Value) Float64() float64 {
if v.t == Float64ValueType {
return math.Float64frombits(v.val)
}
return 0
}
|
