cerc-io/plugeth
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Merge pull request #3721 from karalabe/drop-legacy-db-updates

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core, eth: drop database block splitting upgrader
This commit is contained in:
Péter Szilágyi 2017-02-28 14:00:25 +02:00 committed by GitHub
commit d4f60d362b
3 changed files with 0 additions and 80 deletions
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18
core/database_util.go
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@ -539,24 +539,6 @@ func DeleteReceipt(db ethdb.Database, hash common.Hash) {
db.Delete(append(receiptsPrefix, hash.Bytes()...))
}
// [deprecated by the header/block split, remove eventually]
// GetBlockByHashOld returns the old combined block corresponding to the hash
// or nil if not found. This method is only used by the upgrade mechanism to
// access the old combined block representation. It will be dropped after the
// network transitions to eth/63.
func GetBlockByHashOld(db ethdb.Database, hash common.Hash) *types.Block {
data, _ := db.Get(append(oldBlockHashPrefix, hash[:]...))
if len(data) == 0 {
return nil
}
var block types.StorageBlock
if err := rlp.Decode(bytes.NewReader(data), &block); err != nil {
log.Error(fmt.Sprintf("invalid block RLP for hash %x: %v", hash, err))
return nil
}
return (*types.Block)(&block)
}
// returns a formatted MIP mapped key by adding prefix, canonical number and level
//
// ex. fn(98, 1000) = (prefix || 1000 || 0)

3
eth/backend.go
View File

@ -176,9 +176,6 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
solcPath: config.SolcPath,
}
if err := upgradeChainDatabase(chainDb); err != nil {
return nil, err
}
if err := addMipmapBloomBins(chainDb); err != nil {
return nil, err
}

59
eth/db_upgrade.go
View File

@ -252,65 +252,6 @@ func upgradeSequentialBlockData(db ethdb.Database, hash []byte) error {
return nil
}
// upgradeChainDatabase ensures that the chain database stores block split into
// separate header and body entries.
func upgradeChainDatabase(db ethdb.Database) error {
// Short circuit if the head block is stored already as separate header and body
data, err := db.Get([]byte("LastBlock"))
if err != nil {
return nil
}
head := common.BytesToHash(data)
if block := core.GetBlockByHashOld(db, head); block == nil {
return nil
}
// At least some of the database is still the old format, upgrade (skip the head block!)
log.Info(fmt.Sprint("Old database detected, upgrading..."))
if db, ok := db.(*ethdb.LDBDatabase); ok {
blockPrefix := []byte("block-hash-")
for it := db.NewIterator(); it.Next(); {
// Skip anything other than a combined block
if !bytes.HasPrefix(it.Key(), blockPrefix) {
continue
}
// Skip the head block (merge last to signal upgrade completion)
if bytes.HasSuffix(it.Key(), head.Bytes()) {
continue
}
// Load the block, split and serialize (order!)
block := core.GetBlockByHashOld(db, common.BytesToHash(bytes.TrimPrefix(it.Key(), blockPrefix)))
if err := core.WriteTd(db, block.Hash(), block.NumberU64(), block.DeprecatedTd()); err != nil {
return err
}
if err := core.WriteBody(db, block.Hash(), block.NumberU64(), block.Body()); err != nil {
return err
}
if err := core.WriteHeader(db, block.Header()); err != nil {
return err
}
if err := db.Delete(it.Key()); err != nil {
return err
}
}
// Lastly, upgrade the head block, disabling the upgrade mechanism
current := core.GetBlockByHashOld(db, head)
if err := core.WriteTd(db, current.Hash(), current.NumberU64(), current.DeprecatedTd()); err != nil {
return err
}
if err := core.WriteBody(db, current.Hash(), current.NumberU64(), current.Body()); err != nil {
return err
}
if err := core.WriteHeader(db, current.Header()); err != nil {
return err
}
}
return nil
}
func addMipmapBloomBins(db ethdb.Database) (err error) {
const mipmapVersion uint = 2