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Update to avoid pseudo-random number (#5225)

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* Update to avoid pseudo-random number

This PR update the usage of rand so that non-global seed is used.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Add concurrency-safe random source

See https://stackoverflow.com/questions/48958886/how-to-create-a-thread-safe-rand-source

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2022-03-16 09:24:58 -07:00 • committed by GitHub
parent c3b30cc3ef
commit aa7818e1d3
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4 changed files with 52 additions and 8 deletions
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4
plugin/loop/setup.go
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@ -1,7 +1,6 @@
package loop
import (
"math/rand"
"net"
"strconv"
"time"
@ -10,6 +9,7 @@ import (
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/pkg/dnsutil"
"github.com/coredns/coredns/plugin/pkg/rand"
)
func init() { plugin.Register("loop", setup) }
@ -84,4 +84,4 @@ func qname(zone string) string {
return dnsutil.Join(l1, l2, zone)
}
var r = rand.New(rand.NewSource(time.Now().UnixNano()))
var r = rand.New(time.Now().UnixNano())