import std/options import pkg/chronos import pkg/libp2p import pkg/libp2p/varint import pkg/codex/blocktype as bt import pkg/codex/stores import pkg/codex/manifest import pkg/codex/rng import ./helpers/nodeutils import ./helpers/randomchunker import ./helpers/mockdiscovery import ./helpers/eventually export randomchunker, nodeutils, mockdiscovery, eventually # NOTE: The meaning of equality for blocks # is changed here, because blocks are now `ref` # types. This is only in tests!!! func `==`*(a, b: bt.Block): bool = (a.cid == b.cid) and (a.data == b.data) proc lenPrefix*(msg: openArray[byte]): seq[byte] = ## Write `msg` with a varint-encoded length prefix ## let vbytes = PB.toBytes(msg.len().uint64) var buf = newSeqUninitialized[byte](msg.len() + vbytes.len) buf[0..= 0: continue pos.add(i) var blk = (await store.getBlock(manifest[i])).tryGet() bytePos: seq[int] doAssert bytes < blk.data.len while bytePos.len <= bytes: let ii = Rng.instance.rand(blk.data.len - 1) if bytePos.find(ii) >= 0: continue bytePos.add(ii) blk.data[ii] = byte 0 return pos