proxy.lib.pt_event_logger.go Maven / Gradle / Ivy
package snowflake_proxy
import (
"git.torproject.org/pluggable-transports/snowflake.git/v2/common/task"
"io"
"log"
"time"
"git.torproject.org/pluggable-transports/snowflake.git/v2/common/event"
)
func NewProxyEventLogger(logPeriod time.Duration, output io.Writer) event.SnowflakeEventReceiver {
logger := log.New(output, "", log.LstdFlags|log.LUTC)
el := &logEventLogger{logPeriod: logPeriod, logger: logger}
el.task = &task.Periodic{Interval: logPeriod, Execute: el.logTick}
el.task.WaitThenStart()
return el
}
type logEventLogger struct {
inboundSum int
outboundSum int
connectionCount int
logPeriod time.Duration
task *task.Periodic
logger *log.Logger
}
func (p *logEventLogger) OnNewSnowflakeEvent(e event.SnowflakeEvent) {
switch e.(type) {
case event.EventOnProxyConnectionOver:
e := e.(event.EventOnProxyConnectionOver)
p.inboundSum += e.InboundTraffic
p.outboundSum += e.OutboundTraffic
p.connectionCount += 1
}
}
func (p *logEventLogger) logTick() error {
inbound, inboundUnit := formatTraffic(p.inboundSum)
outbound, outboundUnit := formatTraffic(p.outboundSum)
p.logger.Printf("In the last %v, there were %v connections. Traffic Relayed ↑ %v %v, ↓ %v %v.\n",
p.logPeriod.String(), p.connectionCount, inbound, inboundUnit, outbound, outboundUnit)
p.outboundSum = 0
p.inboundSum = 0
p.connectionCount = 0
return nil
}
func (p *logEventLogger) Close() error {
return p.task.Close()
}