245 lines
7.1 KiB
Nim
245 lines
7.1 KiB
Nim
# Nimbus
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# Copyright (c) 2021-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import
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std/[sequtils, strformat, strutils, tables],
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../nimbus/utils/keyed_queue/kq_rlp,
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eth/rlp,
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stew/[keyed_queue, keyed_queue/kq_debug],
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unittest2
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const
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lruCacheLimit = 10
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lruCacheModulo = 13
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keyList = [
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185, 208, 53, 54, 196, 189, 187, 117, 94, 29, 6, 173, 207, 45, 31,
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208, 127, 106, 117, 49, 40, 171, 6, 94, 84, 60, 125, 87, 168, 183,
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200, 155, 34, 27, 67, 107, 108, 223, 249, 4, 113, 9, 205, 100, 77,
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224, 19, 196, 14, 83, 145, 154, 95, 56, 236, 97, 115, 140, 134, 97,
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153, 167, 23, 17, 182, 116, 253, 32, 108, 148, 135, 169, 178, 124, 147,
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231, 236, 174, 211, 247, 22, 118, 144, 224, 68, 124, 200, 92, 63, 183,
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56, 107, 45, 180, 113, 233, 59, 246, 29, 212, 172, 161, 183, 207, 189,
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56, 198, 130, 62, 28, 53, 122]
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type
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KUQueue = # mind the kqueue module from the nim standard lib
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KeyedQueue[uint,uint]
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LruCache = object
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size: int
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q: KUQueue
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# ------------------------------------------------------------------------------
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# Debugging
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# ------------------------------------------------------------------------------
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when false:
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proc `$`(rc: KeyedQueuePair[uint,uint]): string =
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"(" & $rc.key & "," & $rc.data & ")"
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proc `$`(rc: Result[KeyedQueuePair[uint,uint],void]): string =
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result = "<"
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if rc.isOK:
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result &= $rc.value.key & "," & $rc.value.data
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result &= ">"
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proc `$`(rc: Result[uint,void]): string =
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result = "<"
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if rc.isOK:
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result &= $rc.value
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result &= ">"
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proc say(noisy = false; pfx = "***"; args: varargs[string, `$`]) =
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if noisy:
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if args.len == 0:
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echo "*** ", pfx
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elif 0 < pfx.len and pfx[^1] != ' ':
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echo pfx, " ", args.toSeq.join
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else:
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echo pfx, args.toSeq.join
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# ------------------------------------------------------------------------------
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# Converters
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# ------------------------------------------------------------------------------
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proc toValue(n: int): uint =
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(n + 1000).uint
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when false:
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proc fromValue(n: uint): int =
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(n - 1000).int
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proc toKey(n: int): uint =
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n.uint
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proc fromKey(n: uint): int =
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n.int
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# ------------------------------------------------------------------------------
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# Helpers
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# ------------------------------------------------------------------------------
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proc lruValue(lru: var LruCache; n: int): uint =
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let
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key = n.toKey
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rc = lru.q.lruFetch(key)
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if rc.isOK:
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return rc.value
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lru.q.lruAppend(key, key.fromKey.toValue, lru.size)
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proc toLruCache(a: openArray[int]): LruCache =
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result.size = lruCacheLimit
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for n in a.toSeq.mapIt(it mod lruCacheModulo):
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doAssert result.lruValue(n) == n.toValue
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proc toQueue(a: openArray[int]): KUQueue =
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for n in a:
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result[n.toKey] = n.toValue
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when false:
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proc addOrFlushGroupwise(rq: var KUQueue;
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grpLen: int; seen: var seq[int]; n: int;
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noisy = true) =
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seen.add n
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if seen.len < grpLen:
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return
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# flush group-wise
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let rqLen = rq.len
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noisy.say "updateSeen: deleting ", seen.mapIt($it).join(" ")
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for a in seen:
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doAssert rq.delete(a.toKey).value.data == a.toValue
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doAssert rqLen == seen.len + rq.len
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seen.setLen(0)
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proc compileGenericFunctions(rq: var KUQueue) {.used.} =
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## Verifies that functions compile, at all
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rq.del(0)
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rq[0] = 0 # so `rq[0]` works
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discard rq[0]
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let ignoreValues {.used.} = (
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(rq.append(0,0), rq.push(0,0),
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rq.replace(0,0),
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rq.prepend(0,0), rq.unshift(0,0),
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rq.shift, rq.shiftKey, rq.shiftValue,
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rq.pop, rq.popKey, rq.popValue,
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rq.delete(0)),
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(rq.hasKey(0), rq.eq(0)),
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(rq.firstKey, rq.secondKey, rq.beforeLastKey, rq.lastKey,
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rq.nextKey(0), rq.prevKey(0)),
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(rq.first, rq.second, rq.beforeLast, rq.last,
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rq.next(0), rq.prev(0)),
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(rq.firstValue, rq.secondValue, rq.beforeLastValue, rq.lastValue),
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(rq == rq, rq.len),
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(toSeq(rq.nextKeys), toSeq(rq.nextValues), toSeq(rq.nextPairs),
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toSeq(rq.prevKeys), toSeq(rq.prevValues), toSeq(rq.prevPairs)))
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# ------------------------------------------------------------------------------
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# Test Runners
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# ------------------------------------------------------------------------------
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proc runKeyedQueueRlp(noisy = true) =
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suite "KeyedQueue: RLP stuff":
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test &"Simple rlp serialise + reload":
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var
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rp = [1, 2, 3].toQueue # keyList.toQueue
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rq = rp
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check rp == rq
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var
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sp = rlp.encode(rp)
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sq = rlp.encode(rq)
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check sp == sq
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var
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pr = sp.decode(type rp)
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qr = sq.decode(type rq)
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check pr.verify.isOK
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check qr.verify.isOK
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check pr == qr
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block:
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proc append(rw: var RlpWriter; lru: LruCache)
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{.used, inline, raises: [KeyError].} =
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rw.append((lru.size,lru.q))
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proc read(rlp: var Rlp; Q: type LruCache): Q
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{.inline, raises: [RlpError].} =
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(result.size, result.q) = rlp.read((type result.size, type result.q))
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test "Rlp serialise & load, append":
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block:
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var
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c1 = keyList.toLruCache
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s1 = rlp.encode(c1)
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c2 = newSeq[int]().toLruCache
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noisy.say &"serialised[{s1.len}]: {s1}"
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c2.q.clear
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check c1 != c2
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check c1.q.verify.isOK
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check c2.q.verify.isOK
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c2 = s1.decode(type c2)
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check c1 == c2
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check c2.q.verify.isOK
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noisy.say &"c2Specs: {c2.size} {c2.q.firstKey} {c2.q.lastKey} ..."
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check s1 == rlp.encode(c2)
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block:
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var
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c1 = keyList.toLruCache
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value = c1.lruValue(77)
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queue = toSeq(c1.q.nextPairs).mapIt(it.key)
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values {.used.} = toSeq(c1.q.nextPairs).mapIt(it.data)
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noisy.say &"c1: append {value} => {queue}"
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var
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s1 = rlp.encode(c1)
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c2 = keyList.toLruCache
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noisy.say &"serialised[{s1.len}]: {s1}"
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c2.q.clear
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check c1 != c2
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check c1.q.verify.isOK
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check c2.q.verify.isOK
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c2 = s1.decode(type c2)
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check c1 == c2
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noisy.say &"c2Specs: {c2.size} {c2.q.firstKey} {c2.q.lastKey} ..."
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check s1 == rlp.encode(c2)
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check c2.q.verify.isOK
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# ------------------------------------------------------------------------------
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# Main function(s)
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# ------------------------------------------------------------------------------
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proc keyedQueueRlpMain*(noisy = defined(debug)) =
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noisy.runKeyedQueueRlp
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when isMainModule:
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let noisy = defined(debug)
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noisy.runKeyedQueueRlp
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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