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Implement exponential backoff in vrf plugin #1156

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squeed merged 1 commit into from
Apr 1, 2025
+7 −5
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Implement exponential backoff in vrf plugin #1156

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12 changes: 7 additions & 5 deletions plugins/meta/vrf/vrf.go
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Original file line number Diff line number Diff line change
Expand Up @@ -156,8 +156,9 @@ CONTINUE:
}

// Waits for global IPV6 addresses to be added by the kernel.
maxRetry := 10
for {
backoffBase := 10 * time.Millisecond
maxRetries := 8
for retryCount := 0; retryCount <= maxRetries; retryCount++ {
routesVRFTable, err := netlinksafe.RouteListFiltered(
netlink.FAMILY_ALL,
&netlink.Route{
Expand All @@ -178,12 +179,13 @@ CONTINUE:
break
}

maxRetry--
if maxRetry <= 0 {
if retryCount == maxRetries {
return fmt.Errorf("failed getting local/host addresses for %s in table %d with dst %s", intf, vrf.Table, toFind.IPNet.String())
}

time.Sleep(10 * time.Millisecond)
// Exponential backoff - 10ms, 20m, 40ms, 80ms, 160ms, 320ms, 640ms, 1280ms
// Approx 2,5 seconds total
time.Sleep(backoffBase * time.Duration(1<<retryCount))
}
}

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