-
Notifications
You must be signed in to change notification settings - Fork 3.5k
/
resultset.go
86 lines (70 loc) · 1.68 KB
/
resultset.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
package storage
import (
"context"
"github.com/influxdata/influxdb/models"
"github.com/influxdata/influxdb/tsdb"
"github.com/influxdata/influxql"
)
type ResultSet struct {
cur seriesCursor
row seriesRow
ci CursorIterator
}
func newResultSet(ctx context.Context, req *ReadRequest, cur seriesCursor) *ResultSet {
return &ResultSet{
cur: cur,
ci: CursorIterator{
ctx: ctx,
req: tsdb.CursorRequest{
Ascending: true,
StartTime: req.Start,
EndTime: req.End,
},
},
}
}
func (r *ResultSet) Close() {
r.row.query = nil
r.cur.Close()
}
// Next moves to the result set forward to the next series key.
func (r *ResultSet) Next() bool {
row := r.cur.Next()
if row == nil {
return false
}
r.row = *row
return true
}
func (r *ResultSet) Name() []byte { return r.row.name }
func (r *ResultSet) Tags() models.Tags { return r.row.tags }
func (r *ResultSet) Field() []byte { return []byte(r.row.field.n) }
func (r *ResultSet) FieldType() influxql.DataType { return r.row.field.d }
func (r *ResultSet) CursorIterator() *CursorIterator {
r.ci.req.Name = r.row.name
r.ci.req.Tags = r.row.tags
r.ci.req.Field = r.row.field.n
r.ci.itrs = r.row.query
return &r.ci
}
type CursorIterator struct {
ctx context.Context
req tsdb.CursorRequest
itrs tsdb.CursorIterators
cur tsdb.Cursor
}
func (ci *CursorIterator) Next() bool {
if len(ci.itrs) == 0 {
return false
}
var shard tsdb.CursorIterator
ci.cur = nil
for ci.cur == nil && len(ci.itrs) > 0 {
shard, ci.itrs = ci.itrs[0], ci.itrs[1:]
ci.cur, _ = shard.Next(ci.ctx, &ci.req)
}
return ci.cur != nil
}
func (ci *CursorIterator) Cursor() tsdb.Cursor {
return ci.cur
}