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Fill in commit function

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This commit is contained in:
Alexey Akhunov 2018-06-15 22:32:35 +01:00
parent e70d247dfb
commit 06bc05a279
1 changed files with 23 additions and 15 deletions
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38
main.go
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@ -25,17 +25,16 @@ var (
// This is what stored in the lookupDb
type LookupValue struct {
VersionId int64
Address []byte
}
// Implementation of eth_state.Database
type OurDatabase struct {
stateStore store.CommitMultiStore // For the history of accounts <balance, nonce, storage root hash, code hash>
// Also, for the history of contract data (effects of SSTORE instruction)
lookupDb dbm.DB // Maping [accounts_trie_root_hash] => <version_id>.
// This mapping exists so that we can implement OpenTrie function of the state.Database interface
// Also mapping [storage_trie_root_hash] => <contract_address, version_id>
// This mapping exists so that we can implement OpenStorageTrie function of the state.Database interface
lookupDb dbm.DB // Maping [trie_root_hash] => <version_id>.
// This mapping exists so that we can implement OpenTrie and OpenStorageTrie functions
// of the state.Database interface
addrPreimageDb dbm.DB // Mapping [contract_address_hash] -> <contract_address>
cdc *amino.Codec // Amino codec to encode the values forthe lookupDb
}
@ -52,26 +51,27 @@ func OurNewDatabase(stateDb, lookupDb dbm.DB) *OurDatabase {
func (od *OurDatabase) OpenTrie(root eth_common.Hash) (eth_state.Trie, error) {
// Look up version id to use
val := od.lookupDb.Get(root[:])
var lv LookupValue
_, err := od.cdc.UnmarshalBinaryReader(bytes.NewBuffer(val), &lv, 0)
var versionId int64
_, err := od.cdc.UnmarshalBinaryReader(bytes.NewBuffer(val), &versionId, 0)
if err != nil {
return nil, err
}
od.stateStore.LoadVersion(lv.VersionId)
od.stateStore.LoadVersion(versionId)
st := od.stateStore.GetCommitKVStore(AccountsKey)
return &OurTrie{st: st, prefix: nil}, nil
return &OurTrie{od: od, st: st, prefix: nil}, nil
}
func (od *OurDatabase) OpenStorageTrie(addrHash, root eth_common.Hash) (eth_state.Trie, error) {
val := od.lookupDb.Get(root[:])
var lv LookupValue
_, err := od.cdc.UnmarshalBinaryReader(bytes.NewBuffer(val), &lv, 0)
var versionId int64
_, err := od.cdc.UnmarshalBinaryReader(bytes.NewBuffer(val), &versionId, 0)
if err != nil {
return nil, err
}
od.stateStore.LoadVersion(lv.VersionId)
od.stateStore.LoadVersion(versionId) // This might not be required,
// we just need to check that accounts and storage are consistent
st := od.stateStore.GetCommitKVStore(StorageKey)
return &OurTrie{st: st, prefix: lv.Address}, nil
return &OurTrie{od:od, st: st, prefix: addrHash[:]}, nil
}
func (od *OurDatabase) CopyTrie(eth_state.Trie) eth_state.Trie {
@ -92,6 +92,7 @@ func (od *OurDatabase) TrieDB() *eth_trie.Database {
// Implementation of eth_state.Trie
type OurTrie struct {
od *OurDatabase
// This is essentially part of the KVStore for a specific prefix
st store.CommitKVStore
prefix []byte
@ -130,8 +131,15 @@ func (ot *OurTrie) TryDelete(key []byte) error {
}
func (ot *OurTrie) Commit(onleaf eth_trie.LeafCallback) (eth_common.Hash, error) {
ot.st.Commit() // TODO save commitID
return eth_common.Hash{}, nil
commitId := ot.st.Commit()
var hash eth_common.Hash
copy(hash[:], commitId.Hash)
b, err := ot.od.cdc.MarshalBinary(commitId.Version)
if err != nil {
return hash, err
}
ot.od.lookupDb.Set(hash[:], b)
return hash, nil
}
func (ot *OurTrie) Hash() eth_common.Hash {