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consensus: store recent signer for epoch snapshot

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This commit is contained in:
rjl493456442 2018-09-06 12:47:18 +08:00
parent 8711e2b636
commit 51a0c17174
1 changed files with 23 additions and 18 deletions
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41
consensus/clique/clique.go
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@ -380,30 +380,35 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
break
}
// If an on-disk checkpoint snapshot can be found, use that
if number%checkpointInterval == 0 {
if number%checkpointInterval == 0 || number%c.config.Epoch == 0 {
if s, err := loadSnapshot(c.config, c.signatures, c.db, hash); err == nil {
log.Trace("Loaded voting snapshot from disk", "number", number, "hash", hash)
snap = s
// Special case: In the rinkeby test net, the snapshot corresponding
// to block 2940000 does not store the recent signer information(bug).
// In order to make rinkeby backward compatible, clear the recent signer here.
if hash == common.HexToHash("0x9835192cc6b2126ac01cd636108f4e1a9a7a90877c107fbd9ef7386dd44ccb90") {
snap.Recents = make(map[uint64]common.Address)
}
break
}
}
// If we're at an checkpoint block, make a snapshot if it's known
if number%c.config.Epoch == 0 {
checkpoint := chain.GetHeaderByNumber(number)
if checkpoint != nil {
hash := checkpoint.Hash()
signers := make([]common.Address, (len(checkpoint.Extra)-extraVanity-extraSeal)/common.AddressLength)
for i := 0; i < len(signers); i++ {
copy(signers[i][:], checkpoint.Extra[extraVanity+i*common.AddressLength:])
}
snap = newSnapshot(c.config, c.signatures, number, hash, signers)
if err := snap.store(c.db); err != nil {
return nil, err
}
log.Info("Stored checkpoint snapshot to disk", "number", number, "hash", hash)
break
// If we're at block zero, make a snapshot
if number == 0 {
genesis := chain.GetHeaderByNumber(0)
if err := c.VerifyHeader(chain, genesis, false); err != nil {
return nil, err
}
signers := make([]common.Address, (len(genesis.Extra)-extraVanity-extraSeal)/common.AddressLength)
for i := 0; i < len(signers); i++ {
copy(signers[i][:], genesis.Extra[extraVanity+i*common.AddressLength:])
}
snap = newSnapshot(c.config, c.signatures, 0, genesis.Hash(), signers)
if err := snap.store(c.db); err != nil {
return nil, err
}
log.Trace("Stored genesis voting snapshot to disk")
break
}
// No snapshot for this header, gather the header and move backward
var header *types.Header
@ -435,7 +440,7 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
c.recents.Add(snap.Hash, snap)
// If we've generated a new checkpoint snapshot, save to disk
if snap.Number%checkpointInterval == 0 && len(headers) > 0 {
if (snap.Number%checkpointInterval == 0 || snap.Number%c.config.Epoch == 0) && len(headers) > 0 {
if err = snap.store(c.db); err != nil {
return nil, err
}