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core, eth: implement eth/65 transaction fetcher

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This commit is contained in:
rjl493456442
2019-10-28 19:59:07 +08:00
committed by Péter Szilágyi
parent dcffb7777f
commit 049e17116e
15 changed files with 1344 additions and 211 deletions
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59
eth/sync.go
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@ -38,8 +38,9 @@ const (
)
type txsync struct {
p *peer
txs []*types.Transaction
p *peer
hashes []common.Hash
txs []*types.Transaction
}
// syncTransactions starts sending all currently pending transactions to the given peer.
@ -53,7 +54,7 @@ func (pm *ProtocolManager) syncTransactions(p *peer) {
return
}
select {
case pm.txsyncCh <- &txsync{p, txs}:
case pm.txsyncCh <- &txsync{p: p, txs: txs}:
case <-pm.quitSync:
}
}
@ -69,26 +70,46 @@ func (pm *ProtocolManager) txsyncLoop() {
pack = new(txsync) // the pack that is being sent
done = make(chan error, 1) // result of the send
)
// send starts a sending a pack of transactions from the sync.
send := func(s *txsync) {
// Fill pack with transactions up to the target size.
size := common.StorageSize(0)
pack.p = s.p
pack.hashes = pack.hashes[:0]
pack.txs = pack.txs[:0]
for i := 0; i < len(s.txs) && size < txsyncPackSize; i++ {
pack.txs = append(pack.txs, s.txs[i])
size += s.txs[i].Size()
if s.p.version >= eth65 {
// Eth65 introduces transaction announcement https://github.com/ethereum/EIPs/pull/2464,
// only txhashes are transferred here.
for i := 0; i < len(s.txs) && size < txsyncPackSize; i++ {
pack.hashes = append(pack.hashes, s.txs[i].Hash())
size += common.HashLength
}
// Remove the transactions that will be sent.
s.txs = s.txs[:copy(s.txs, s.txs[len(pack.hashes):])]
if len(s.txs) == 0 {
delete(pending, s.p.ID())
}
// Send the pack in the background.
s.p.Log().Trace("Sending batch of transaction announcements", "count", len(pack.hashes), "bytes", size)
sending = true
go func() { done <- pack.p.SendNewTransactionHashes(pack.hashes) }()
} else {
// Legacy eth protocol doesn't have transaction announcement protocol
// message, transfer the whole pending transaction slice.
for i := 0; i < len(s.txs) && size < txsyncPackSize; i++ {
pack.txs = append(pack.txs, s.txs[i])
size += s.txs[i].Size()
}
// Remove the transactions that will be sent.
s.txs = s.txs[:copy(s.txs, s.txs[len(pack.txs):])]
if len(s.txs) == 0 {
delete(pending, s.p.ID())
}
// Send the pack in the background.
s.p.Log().Trace("Sending batch of transactions", "count", len(pack.txs), "bytes", size)
sending = true
go func() { done <- pack.p.SendNewTransactions(pack.txs) }()
}
// Remove the transactions that will be sent.
s.txs = s.txs[:copy(s.txs, s.txs[len(pack.txs):])]
if len(s.txs) == 0 {
delete(pending, s.p.ID())
}
// Send the pack in the background.
s.p.Log().Trace("Sending batch of transactions", "count", len(pack.txs), "bytes", size)
sending = true
go func() { done <- pack.p.SendTransactions(pack.txs) }()
}
// pick chooses the next pending sync.
@ -133,8 +154,10 @@ func (pm *ProtocolManager) txsyncLoop() {
// downloading hashes and blocks as well as handling the announcement handler.
func (pm *ProtocolManager) syncer() {
// Start and ensure cleanup of sync mechanisms
pm.fetcher.Start()
defer pm.fetcher.Stop()
pm.blockFetcher.Start()
pm.txFetcher.Start()
defer pm.blockFetcher.Stop()
defer pm.txFetcher.Stop()
defer pm.downloader.Terminate()
// Wait for different events to fire synchronisation operations