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accounting.go
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accounting.go
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package accounting
import (
"context"
"github.com/fs714/goiftop/utils/log"
"time"
)
const DefaultFlowDbSize = 2
const DefaultStatChannelSize = 16
const DefaultRotateInterval = 5
var GlobalAcct *Accounting
type Accounting struct {
FlowAccd map[string]*FlowCollectionHistory
Retention int64
Ch chan *FlowCollection
}
func NewAccounting() (acct *Accounting) {
acct = &Accounting{
FlowAccd: make(map[string]*FlowCollectionHistory, DefaultFlowDbSize),
Ch: make(chan *FlowCollection, DefaultStatChannelSize),
}
return
}
func (a *Accounting) AddInterface(ifaceName string) {
a.FlowAccd[ifaceName] = NewFlowCollectionHistory(ifaceName)
}
func (a *Accounting) SetRetention(t int64) {
a.Retention = t
}
func (a *Accounting) Start(ctx context.Context) {
ticker := time.NewTicker(time.Duration(DefaultRotateInterval) * time.Second)
for {
select {
case <-ctx.Done():
log.Infoln("statistic exit")
return
case <-ticker.C:
if a.Retention > 0 {
before := time.Now().Unix() - a.Retention
for _, v := range a.FlowAccd {
v.Mu.Lock()
v.Retention(before)
v.Mu.Unlock()
}
}
case flowCol := <-a.Ch:
flowColHist, ok := a.FlowAccd[flowCol.InterfaceName]
if !ok {
log.Errorf("invalid interface name: %s", flowCol.InterfaceName)
continue
}
flowColHist.Mu.Lock()
fc, ok := flowColHist.HistCollection[flowCol.FlowTimestamp]
if !ok {
flowColHist.HistCollection[flowCol.FlowTimestamp] = flowCol
flowColHist.SetLastTimestamp(flowCol.FlowTimestamp)
} else {
fc.Mu.Lock()
fc.UpdateByFlowCol(flowCol)
fc.Mu.Unlock()
flowColHist.SetLastTimestamp(flowCol.FlowTimestamp)
}
flowColHist.Mu.Unlock()
}
}
}