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switch to math/rand/v2 in most places

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this allows removing some ugly instantiations of an rng based on the current
time.

Intn is now IntN for our concurrency-safe prng wrapper to match the randv2 api.

v2 exists since go1.22, which we already require.
This commit is contained in:
Mechiel Lukkien
2024-11-29 13:45:19 +01:00
parent 96a3ecd52c
commit de435fceba
9 changed files with 24 additions and 30 deletions
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7
webmail/eventwriter.go
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@ -7,7 +7,7 @@ import (
"fmt"
"io"
"log/slog"
mathrand "math/rand"
mathrand2 "math/rand/v2"
"net/http"
"runtime/debug"
"sync"
@ -71,9 +71,6 @@ func (ew *eventWriter) write(name string, v any) error {
return ew.out.Flush()
}
// For random wait between min and max delay.
var waitGen = mathrand.New(mathrand.NewSource(time.Now().UnixNano()))
// Schedule an event for writing to the connection. If events get a delay, this
// function still returns immediately.
func (ew *eventWriter) xsendEvent(ctx context.Context, log mlog.Log, name string, v any) {
@ -136,7 +133,7 @@ func (ew *eventWriter) xsendEvent(ctx context.Context, log mlog.Log, name string
}
// If we have an events channel, we have a goroutine that write the events, delayed.
if ew.events != nil {
wait := ew.waitMin + time.Duration(waitGen.Intn(1000))*(ew.waitMax-ew.waitMin)/1000
wait := ew.waitMin + time.Duration(mathrand2.IntN(1000))*(ew.waitMax-ew.waitMin)/1000
when := time.Now().Add(wait)
ew.events <- struct {
name string