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core: settable genesis nonce

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You can set the nonce of the block with `--genesisnonce`. When the
genesis nonce changes and it doesn't match with the first block in your
database it will fail. A new `datadir` must be given if the nonce of the
genesis block changes.
This commit is contained in:
obscuren
2015-06-08 12:12:13 +02:00
parent c6faa18ec9
commit 6244b10a8f
9 changed files with 84 additions and 28 deletions
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24
core/chain_manager.go
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@ -109,16 +109,22 @@ type ChainManager struct {
pow pow.PoW
}
func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) *ChainManager {
func NewChainManager(genesis *types.Block, blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
bc := &ChainManager{
blockDb: blockDb,
stateDb: stateDb,
genesisBlock: GenesisBlock(stateDb),
eventMux: mux,
quit: make(chan struct{}),
cache: NewBlockCache(blockCacheLimit),
pow: pow,
blockDb: blockDb,
stateDb: stateDb,
eventMux: mux,
quit: make(chan struct{}),
cache: NewBlockCache(blockCacheLimit),
pow: pow,
}
// Check the genesis block given to the chain manager. If the genesis block mismatches block number 0
// throw an error. If no block or the same block's found continue.
if g := bc.GetBlockByNumber(0); g != nil && g.Hash() != genesis.Hash() {
return nil, fmt.Errorf("Genesis mismatch. Maybe different nonce (%d vs %d)? %x / %x", g.Nonce(), genesis.Nonce(), g.Hash().Bytes()[:4], genesis.Hash().Bytes()[:4])
}
bc.genesisBlock = genesis
bc.setLastState()
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
@ -144,7 +150,7 @@ func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.T
go bc.update()
return bc
return bc, nil
}
func (bc *ChainManager) SetHead(head *types.Block) {