-
Notifications
You must be signed in to change notification settings - Fork 450
/
aggregate_attempt.go
99 lines (85 loc) · 2.79 KB
/
aggregate_attempt.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
// 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 client
import (
"github.com/m3db/m3/src/dbnode/storage/index"
"github.com/m3db/m3/src/x/ident"
"github.com/m3db/m3/src/x/pool"
xretry "github.com/m3db/m3/src/x/retry"
)
var (
aggregateAttemptArgsZeroed aggregateAttemptArgs
)
type aggregateAttempt struct {
session *session
attemptFn xretry.Fn
args aggregateAttemptArgs
resultIter AggregatedTagsIterator
resultMetadata FetchResponseMetadata
}
type aggregateAttemptArgs struct {
ns ident.ID
query index.Query
opts index.AggregationOptions
}
func (f *aggregateAttempt) reset() {
f.args = aggregateAttemptArgsZeroed
f.resultIter = nil
f.resultMetadata = FetchResponseMetadata{}
}
func (f *aggregateAttempt) performAttempt() error {
var err error
f.resultIter, f.resultMetadata, err = f.session.aggregateAttempt(
f.args.ns, f.args.query, f.args.opts)
return err
}
type aggregateAttemptPool interface {
Init()
Get() *aggregateAttempt
Put(*aggregateAttempt)
}
type aggregateAttemptPoolImpl struct {
pool pool.ObjectPool
session *session
}
func newAggregateAttemptPool(
session *session,
opts pool.ObjectPoolOptions,
) aggregateAttemptPool {
p := pool.NewObjectPool(opts)
return &aggregateAttemptPoolImpl{pool: p, session: session}
}
func (p *aggregateAttemptPoolImpl) Init() {
p.pool.Init(func() interface{} {
f := &aggregateAttempt{session: p.session}
// NB(prateek): Bind fn once to avoid creating receiver
// and function method pointer over and over again
f.attemptFn = f.performAttempt
f.reset()
return f
})
}
func (p *aggregateAttemptPoolImpl) Get() *aggregateAttempt {
return p.pool.Get().(*aggregateAttempt)
}
func (p *aggregateAttemptPoolImpl) Put(f *aggregateAttempt) {
f.reset()
p.pool.Put(f)
}