-
Notifications
You must be signed in to change notification settings - Fork 451
/
iter.go
125 lines (110 loc) · 3.3 KB
/
iter.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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
// Copyright (c) 2019 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package annotated
import (
"github.com/m3db/m3/src/cmd/services/m3coordinator/ingest"
"github.com/m3db/m3/src/query/generated/proto/prompb"
"github.com/m3db/m3/src/query/models"
"github.com/m3db/m3/src/query/storage"
"github.com/m3db/m3/src/query/ts"
xtime "github.com/m3db/m3/src/x/time"
)
var defaultValue = ingest.IterValue{
Tags: models.EmptyTags(),
Attributes: ts.DefaultSeriesAttributes(),
Metadata: ts.Metadata{},
}
type datapoint struct {
ts.Datapoint
annotation []byte
}
func sampleToDatapoint(s prompb.AnnotatedSample) datapoint {
return datapoint{
Datapoint: ts.Datapoint{
Timestamp: storage.PromTimestampToTime(s.Timestamp),
Value: s.Value,
},
annotation: s.Annotation,
}
}
var _ ingest.DownsampleAndWriteIter = &iter{}
type iter struct {
idx int
tags []models.Tags
datapoints []datapoint
metadatas []ts.Metadata
}
func newIter(
timeseries []prompb.AnnotatedTimeSeries, tagOpts models.TagOptions,
) *iter {
var (
tags = make([]models.Tags, 0, len(timeseries))
datapoints = make([]datapoint, 0, len(timeseries))
)
for _, ts := range timeseries {
t := storage.PromLabelsToM3Tags(ts.Labels, tagOpts)
for _, s := range ts.Samples {
tags = append(tags, t)
datapoints = append(datapoints, sampleToDatapoint(s))
}
}
return &iter{
idx: -1,
tags: tags,
datapoints: datapoints,
}
}
func (i *iter) Next() bool {
i.idx++
return i.idx < len(i.tags)
}
func (i *iter) Current() ingest.IterValue {
if len(i.tags) == 0 || i.idx < 0 || i.idx >= len(i.tags) {
return defaultValue
}
curr := i.datapoints[i.idx]
value := ingest.IterValue{
Tags: i.tags[i.idx],
Datapoints: ts.Datapoints{curr.Datapoint},
Attributes: ts.DefaultSeriesAttributes(),
Unit: xtime.Millisecond,
Annotation: curr.annotation,
}
if i.idx < len(i.metadatas) {
value.Metadata = i.metadatas[i.idx]
}
return value
}
func (i *iter) Reset() error {
i.idx = -1
return nil
}
func (i *iter) Error() error {
return nil
}
func (i *iter) SetCurrentMetadata(metadata ts.Metadata) {
if len(i.metadatas) == 0 {
i.metadatas = make([]ts.Metadata, len(i.tags))
}
if i.idx < 0 || i.idx >= len(i.metadatas) {
return
}
i.metadatas[i.idx] = metadata
}