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nimbus-eth1/tests/test_txpool/setup.nim

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# Nimbus
# Copyright (c) 2018-2019 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
import
std/[algorithm, os, sequtils, strformat, tables, times],
../../nimbus/[config, constants],
../../nimbus/core/[chain, tx_pool],
../../nimbus/utils/ec_recover,
../../nimbus/core/tx_pool/[tx_chain, tx_item],
../../nimbus/common/common,
./helpers,
./sign_helper,
eth/[keys, p2p],
stew/[keyed_queue]
# ------------------------------------------------------------------------------
# Private functions
# ------------------------------------------------------------------------------
proc setStatus(xp: TxPoolRef; item: TxItemRef; status: TxItemStatus)
{.gcsafe,raises: [CatchableError].} =
## Change/update the status of the transaction item.
if status != item.status:
discard xp.txDB.reassign(item, status)
proc importBlocks(c: ChainRef; h: seq[BlockHeader]; b: seq[BlockBody]): int =
if c.persistBlocks(h,b) != ValidationResult.OK:
raiseAssert "persistBlocks() failed at block #" & $h[0].blockNumber
for body in b:
result += body.transactions.len
# ------------------------------------------------------------------------------
# Public functions
# ------------------------------------------------------------------------------
proc blockChainForTesting*(network: NetworkID): CommonRef =
result = CommonRef.new(
newMemoryDb(),
networkId = network,
params = network.networkParams)
result.initializeEmptyDB
proc toTxPool*(
com: CommonRef; ## to be modified
file: string; ## input, file and transactions
getStatus: proc(): TxItemStatus; ## input, random function
loadBlocks: int; ## load at most this many blocks
minBlockTxs: int; ## load at least this many txs in blocks
loadTxs: int; ## load at most this many transactions
baseFee = 0.GasPrice; ## initalise with `baseFee` (unless 0)
noisy: bool): (TxPoolRef, int) =
var
txCount = 0
chainNo = 0
chainRef = com.newChain
nTxs = 0
doAssert not com.isNil
result[0] = TxPoolRef.new(com,testAddress)
result[0].baseFee = baseFee
for chain in file.undumpBlocks:
let leadBlkNum = chain[0][0].blockNumber
chainNo.inc
if loadTxs <= txCount:
break
# Verify Genesis
if leadBlkNum == 0.u256:
doAssert chain[0][0] == com.db.getBlockHeader(0.u256)
continue
if leadBlkNum < loadBlocks.u256 or nTxs < minBlockTxs:
nTxs += chainRef.importBlocks(chain[0],chain[1])
continue
# Import transactions
for inx in 0 ..< chain[0].len:
let
num = chain[0][inx].blockNumber
txs = chain[1][inx].transactions
# Continue importing up until first non-trivial block
if txCount == 0 and txs.len == 0:
nTxs += chainRef.importBlocks(@[chain[0][inx]],@[chain[1][inx]])
continue
# Load transactions, one-by-one
for n in 0 ..< min(txs.len, loadTxs - txCount):
txCount.inc
let
status = statusInfo[getStatus()]
info = &"{txCount} #{num}({chainNo}) {n}/{txs.len} {status}"
noisy.showElapsed(&"insert: {info}"):
result[0].add(txs[n], info)
if loadTxs <= txCount:
break
result[1] = nTxs
proc toTxPool*(
com: CommonRef; ## to be modified, initialisier for `TxPool`
itList: seq[TxItemRef]; ## import items into new `TxPool` (read only)
baseFee = 0.GasPrice; ## initalise with `baseFee` (unless 0)
local: seq[EthAddress] = @[]; ## local addresses
noisy = true): TxPoolRef =
doAssert not com.isNil
result = TxPoolRef.new(com,testAddress)
result.baseFee = baseFee
result.maxRejects = itList.len
let noLocals = local.len == 0
var localAddr: Table[EthAddress,bool]
for a in local:
localAddr[a] = true
noisy.showElapsed(&"Loading {itList.len} transactions"):
for item in itList:
if noLocals:
result.add(item.tx, item.info)
elif localAddr.hasKey(item.sender):
doAssert result.addLocal(item.tx, true).isOk
else:
doAssert result.addRemote(item.tx, true).isOk
doAssert result.nItems.total == itList.len
proc toTxPool*(
com: CommonRef; ## to be modified, initialisier for `TxPool`
timeGap: var Time; ## to be set, time in the middle of time gap
nGapItems: var int; ## to be set, # items before time gap
itList: var seq[TxItemRef]; ## import items into new `TxPool` (read only)
baseFee = 0.GasPrice; ## initalise with `baseFee` (unless 0)
itemsPC = 30; ## % number if items befor time gap
delayMSecs = 200; ## size of time vap
local: seq[EthAddress] = @[]; ## local addresses
noisy = true): TxPoolRef =
## Variant of `toTxPoolFromSeq()` with a time gap between consecutive
## items on the `remote` queue
doAssert not com.isNil
doAssert 0 < itemsPC and itemsPC < 100
result = TxPoolRef.new(com,testAddress)
result.baseFee = baseFee
result.maxRejects = itList.len
let noLocals = local.len == 0
var localAddr: Table[EthAddress,bool]
for a in local:
localAddr[a] = true
let
delayAt = itList.len * itemsPC div 100
middleOfTimeGap = initDuration(milliSeconds = delayMSecs div 2)
const
tFmt = "yyyy-MM-dd'T'HH-mm-ss'.'fff"
noisy.showElapsed(&"Loading {itList.len} transactions"):
for n in 0 ..< itList.len:
let item = itList[n]
if noLocals:
result.add(item.tx, item.info)
elif localAddr.hasKey(item.sender):
doAssert result.addLocal(item.tx, true).isOk
else:
doAssert result.addRemote(item.tx, true).isOk
if n < 3 or delayAt-3 <= n and n <= delayAt+3 or itList.len-4 < n:
let t = result.getItem(item.itemID).value.timeStamp.format(tFmt, utc())
noisy.say &"added item {n} time={t}"
if delayAt == n:
nGapItems = n # pass back value
let itemID = item.itemID
doAssert result.nItems.disposed == 0
timeGap = result.getItem(itemID).value.timeStamp + middleOfTimeGap
let t = timegap.format(tFmt, utc())
noisy.say &"{delayMSecs}ms time gap centered around {t}"
delayMSecs.sleep
doAssert result.nItems.total == itList.len
doAssert result.nItems.disposed == 0
proc toItems*(xp: TxPoolRef): seq[TxItemRef] =
toSeq(xp.txDB.byItemID.nextValues)
proc toItems*(xp: TxPoolRef; label: TxItemStatus): seq[TxItemRef] =
for (_,nonceList) in xp.txDB.decAccount(label):
result.add toSeq(nonceList.incNonce)
proc setItemStatusFromInfo*(xp: TxPoolRef) =
## Re-define status from last character of info field. Note that this might
## violate boundary conditions regarding nonces.
for item in xp.toItems:
let w = TxItemStatus.toSeq.filterIt(statusInfo[it][0] == item.info[^1])[0]
xp.setStatus(item, w)
proc getBackHeader*(xp: TxPoolRef; nTxs, nAccounts: int):
(BlockHeader, seq[Transaction], seq[EthAddress]) {.inline.} =
## back track the block chain for at least `nTxs` transactions and
## `nAccounts` sender accounts
var
accTab: Table[EthAddress,bool]
txsLst: seq[Transaction]
backHash = xp.head.blockHash
backHeader = xp.head
backBody = xp.chain.com.db.getBlockBody(backHash)
while true:
# count txs and step behind last block
txsLst.add backBody.transactions
backHash = backHeader.parentHash
if not xp.chain.com.db.getBlockHeader(backHash, backHeader) or
not xp.chain.com.db.getBlockBody(backHash, backBody):
break
# collect accounts unless max reached
if accTab.len < nAccounts:
for tx in backBody.transactions:
let rc = tx.ecRecover
if rc.isOK:
if xp.txDB.bySender.eq(rc.value).isOk:
accTab[rc.value] = true
if nAccounts <= accTab.len:
break
if nTxs <= txsLst.len and nAccounts <= accTab.len:
break
# otherwise get next block
(backHeader, txsLst.reversed, toSeq(accTab.keys))
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------
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