logos-storage/logos-storage-nim-dht
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generate segments systematically

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Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
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Csaba Kiraly 2023-06-12 11:35:01 +02:00
parent b2774465f0
commit 0083e1e41c
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1 changed files with 10 additions and 2 deletions
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das/das.nim
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@ -1,5 +1,5 @@
import import
std/[options, sequtils, random], std/[options, sequtils, random, math],
asynctest, asynctest,
bearssl/rand, bearssl/rand,
chronicles, chronicles,
@ -64,7 +64,14 @@ proc toNodeId(data: openArray[byte]): NodeId =
proc segmentData(s: int, segmentsize: int) : seq[byte] = proc segmentData(s: int, segmentsize: int) : seq[byte] =
result = newSeq[byte](segmentsize) result = newSeq[byte](segmentsize)
result[0] = byte(s mod 256) var
r = s
i = 0
while r > 0:
assert(i<segmentsize)
result[i] = byte(r mod 256)
r = r div 256
i+=1
proc sample(s: Slice[int], len: int): seq[int] = proc sample(s: Slice[int], len: int): seq[int] =
# random sample without replacement # random sample without replacement
@ -99,6 +106,7 @@ when isMainModule:
samplesize = 3 samplesize = 3
upload_timeout = 5.seconds upload_timeout = 5.seconds
sampling_timeout = 5.seconds sampling_timeout = 5.seconds
assert(log2(blocksize.float).ceil.int <= segmentsize * 8 )
var var
rng: ref HmacDrbgContext rng: ref HmacDrbgContext