forked from kubernetes-retired/heapster
-
Notifications
You must be signed in to change notification settings - Fork 0
/
memory.go
72 lines (62 loc) · 1.89 KB
/
memory.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
// Copyright 2014 Google Inc. 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 sinks
import (
"container/list"
"flag"
"fmt"
"time"
"github.com/GoogleCloudPlatform/heapster/sources/api"
)
var argMaxStorageDuration = flag.Duration("sink_memory_ttl", 1*time.Hour, "Time duration for which stats should be cached if the memory sink is used")
type MemorySink struct {
containersData *list.List
oldestData time.Time
maxStorageDuration time.Duration
}
type entry struct {
timestamp time.Time
data interface{}
}
func (self *MemorySink) reapOldData() {
if self.containersData.Len() == 0 || time.Since(self.oldestData) < self.maxStorageDuration {
return
}
// TODO(vishh): Reap old data.
}
func (self *MemorySink) Store(data interface{}) error {
if data, ok := data.([]api.Pod); ok {
for _, value := range data {
self.containersData.PushFront(entry{time.Now(), value})
if self.containersData.Len() == 1 {
self.oldestData = time.Now()
}
}
}
self.reapOldData()
return nil
}
func (self *MemorySink) DebugInfo() string {
desc := "Sink type: Memory\n"
desc += fmt.Sprintf("\tMaximum storage duration: %v\n", self.maxStorageDuration)
desc += "\n"
return desc
}
func NewMemorySink() ExternalSinkManager {
return &MemorySink{
containersData: list.New(),
oldestData: time.Now(),
maxStorageDuration: *argMaxStorageDuration,
}
}