virtigo/watchdog.go

65 lines
1.3 KiB
Go

package main
import (
"fmt"
"os"
"time"
"go.wit.com/log"
)
// scan hypervisors every i seconds
func (h *HyperT) NewWatchdog() {
var delay int = 99
var i int = delay
h.MyTicker(h.Delay, "new Watchdog() "+h.Hostname, func() {
i += 1
// check if the env var is set to autoscan
if os.Getenv("WATCHDOG_AUTO_SCAN") != "true" {
if i < delay {
i = delay
}
// print every 'delay' seconds
if i%delay == 0 {
log.Info("Not auto scanning", i, "WATCHDOG_AUTO_SCAN =", os.Getenv("WATCHDOG_AUTO_SCAN"))
}
return
}
if i < delay {
return
}
i = 0
})
}
// timeFunction takes a function as an argument and returns the execution time.
func TimeFunction(f func()) time.Duration {
startTime := time.Now() // Record the start time
f() // Execute the function
return time.Since(startTime) // Calculate the elapsed time
}
func (h *HyperT) MyTicker(t time.Duration, name string, f func()) {
h.Dog = time.NewTicker(t)
defer h.Dog.Stop()
done := make(chan bool)
/*
// this example would exit/destroy the ticker in 10 seconds
go func() {
time.Sleep(10 * time.Second)
done <- true
}()
*/
for {
select {
case <-done:
fmt.Println("Done!")
return
case t := <-h.Dog.C:
log.Info(name, "Current time: ", t)
h.Scan()
// f()
}
}
}