46 lines
1.0 KiB
Go
46 lines
1.0 KiB
Go
package daemons
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import (
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"math/rand"
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"time"
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"github.com/localhots/shezmu"
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)
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// NumberPrinter is a daemon that prints numbers once in a while.
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type NumberPrinter struct {
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shezmu.BaseDaemon
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}
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// Startup sets up panic handler and starts enqueuing number printing jobs.
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func (n *NumberPrinter) Startup() {
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n.HandlePanics(func(err error) {
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n.Logf("Oh, crap! There was a panic, take a look: %s", err.Error())
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})
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n.LimitRate(3, time.Second)
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n.SystemProcess("Random Number Generator", n.generateNumbers)
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}
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func (n *NumberPrinter) generateNumbers() {
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for n.Continue() {
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if rand.Intn(10) == 0 {
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panic("Number generator refuses to work right now!")
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}
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// Generate a random number between 1000 and 9999 and print it
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num := 1000 + rand.Intn(9000)
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n.Process(n.makeActor(num))
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}
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}
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func (n *NumberPrinter) makeActor(num int) shezmu.Actor {
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return func() {
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n.Log("Number printer says:", num)
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// Making it crash sometimes
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if num%10 == 0 {
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panic("Nooooo! Random number generator returned a multiple of ten!")
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}
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}
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}
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