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posthog/livestream/live_stats.go
2024-08-14 15:58:36 -07:00

41 lines
920 B
Go

package main
import (
"log"
"time"
"github.com/hashicorp/golang-lru/v2/expirable"
)
const (
COUNTER_TTL = time.Second * 60
)
type Stats struct {
Store map[string]*expirable.LRU[string, string]
GlobalStore *expirable.LRU[string, string]
Counter *SlidingWindowCounter
}
func newStatsKeeper() *Stats {
return &Stats{
Store: make(map[string]*expirable.LRU[string, string]),
GlobalStore: expirable.NewLRU[string, string](0, nil, COUNTER_TTL),
Counter: NewSlidingWindowCounter(COUNTER_TTL),
}
}
func (ts *Stats) keepStats(statsChan chan PostHogEvent) {
log.Println("starting stats keeper...")
for event := range statsChan {
ts.Counter.Increment()
token := event.Token
if _, ok := ts.Store[token]; !ok {
ts.Store[token] = expirable.NewLRU[string, string](0, nil, COUNTER_TTL)
}
ts.Store[token].Add(event.DistinctId, "1")
ts.GlobalStore.Add(event.DistinctId, "1")
}
}