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memory.go
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memory.go
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package sinks
import (
"container/list"
"flag"
"time"
"github.com/GoogleCloudPlatform/heapster/sources"
)
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) StoreData(data Data) error {
if data, ok := data.([]sources.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 NewMemorySink() Sink {
return &MemorySink{
containersData: list.New(),
oldestData: time.Now(),
maxStorageDuration: *argMaxStorageDuration,
}
}