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consensus/clique, light: light client snapshots on Rinkeby

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Péter Szilágyi
2018-08-21 14:39:28 +03:00
parent 355fc47d39
commit 9f036647e4
5 changed files with 53 additions and 40 deletions
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31
consensus/clique/clique.go
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@ -387,22 +387,23 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
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
// 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
}
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