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[#851] util/rand: use single random source

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It is much more convenient to skip source creation.
Also fix some bugs:
1. `cryptoSource.Int63()` now returns number in [0, 1<<63) as required
   by `rand.Source` interface.
2. Replace `cryptoSource.Uint63()` with `cryptoSource.Uint64` to allow
   generate uint64 numbers directly (see rand.Source64 docs).

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-01-11 17:07:59 +03:00 • committed by Alex Vanin
parent c35cdb3684
commit 5828f43e52
8 changed files with 56 additions and 66 deletions
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6
cmd/neofs-node/morph.go
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@ -40,8 +40,7 @@ func initMorphComponents(c *cfg) {
fatalOnErr(errors.New("missing Neo RPC endpoints"))
}
crand := rand.New() // math/rand with cryptographic source
crand.Shuffle(len(addresses), func(i, j int) {
rand.Shuffle(len(addresses), func(i, j int) {
addresses[i], addresses[j] = addresses[j], addresses[i]
})
@ -185,8 +184,7 @@ func listenMorphNotifications(c *cfg) {
endpoints := morphconfig.NotificationEndpoint(c.appCfg)
timeout := morphconfig.DialTimeout(c.appCfg)
crand := rand.New() // math/rand with cryptographic source
crand.Shuffle(len(endpoints), func(i, j int) {
rand.Shuffle(len(endpoints), func(i, j int) {
endpoints[i], endpoints[j] = endpoints[j], endpoints[i]
})