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core: fixed genesis write out to write only canon number

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This commit is contained in:
Jeffrey Wilcke 2015-07-25 21:48:53 +02:00
parent 73a576c9af
commit c1c895a36b
2 changed files with 19 additions and 3 deletions
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13
core/chain_util.go
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@ -111,13 +111,22 @@ func GetBlockByNumber(db common.Database, number uint64) *types.Block {
return GetBlockByHash(db, common.BytesToHash(key))
}
// WriteHead force writes the current head
func WriteHead(db common.Database, block *types.Block) error {
// WriteCanonNumber writes the canonical hash for the given block
func WriteCanonNumber(db common.Database, block *types.Block) error {
key := append(blockNumPre, block.Number().Bytes()...)
err := db.Put(key, block.Hash().Bytes())
if err != nil {
return err
}
return nil
}
// WriteHead force writes the current head
func WriteHead(db common.Database, block *types.Block) error {
err := WriteCanonNumber(db, block)
if err != nil {
return err
}
err = db.Put([]byte("LastBlock"), block.Hash().Bytes())
if err != nil {
return err

9
core/genesis.go
View File

@ -27,6 +27,8 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
)
@ -83,7 +85,12 @@ func WriteGenesisBlock(stateDb, blockDb common.Database, reader io.Reader) (*typ
block.Td = difficulty
if block := GetBlockByHash(blockDb, block.Hash()); block != nil {
return nil, fmt.Errorf("Block %x already in database", block.Hash())
glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
err := WriteCanonNumber(blockDb, block)
if err != nil {
return nil, err
}
return block, nil
}
statedb.Sync()