func LoadState(db dbm.DB) *State {
s := &State{DB: db}
buf := db.Get(stateKey)
if len(buf) == 0 {
return nil
} else {
r, n, err := bytes.NewReader(buf), new(int64), new(error)
s.ChainID = wire.ReadString(r, n, err)
s.LastBlockHeight = wire.ReadVarint(r, n, err)
s.LastBlockHash = wire.ReadByteSlice(r, n, err)
s.LastBlockParts = wire.ReadBinary(types.PartSetHeader{}, r, n, err).(types.PartSetHeader)
s.LastBlockTime = wire.ReadTime(r, n, err)
s.BondedValidators = wire.ReadBinary(&types.ValidatorSet{}, r, n, err).(*types.ValidatorSet)
s.LastBondedValidators = wire.ReadBinary(&types.ValidatorSet{}, r, n, err).(*types.ValidatorSet)
s.UnbondingValidators = wire.ReadBinary(&types.ValidatorSet{}, r, n, err).(*types.ValidatorSet)
accountsHash := wire.ReadByteSlice(r, n, err)
s.accounts = merkle.NewIAVLTree(wire.BasicCodec, acm.AccountCodec, defaultAccountsCacheCapacity, db)
s.accounts.Load(accountsHash)
validatorInfosHash := wire.ReadByteSlice(r, n, err)
s.validatorInfos = merkle.NewIAVLTree(wire.BasicCodec, types.ValidatorInfoCodec, 0, db)
s.validatorInfos.Load(validatorInfosHash)
nameRegHash := wire.ReadByteSlice(r, n, err)
s.nameReg = merkle.NewIAVLTree(wire.BasicCodec, NameRegCodec, 0, db)
s.nameReg.Load(nameRegHash)
if *err != nil {
// DATA HAS BEEN CORRUPTED OR THE SPEC HAS CHANGED
Exit(Fmt("Data has been corrupted or its spec has changed: %v\n", *err))
}
// TODO: ensure that buf is completely read.
}
return s
}
func makeStorage(db dbm.DB, root []byte) merkle.Tree {
storage := merkle.NewIAVLTree(
wire.BasicCodec,
wire.BasicCodec,
1024,
db,
)
storage.Load(root)
return storage
}
func MakeGenesisState(db dbm.DB, genDoc *GenesisDoc) *State {
if len(genDoc.Validators) == 0 {
Exit(Fmt("The genesis file has no validators"))
}
if genDoc.GenesisTime.IsZero() {
genDoc.GenesisTime = time.Now()
}
// Make accounts state tree
accounts := merkle.NewIAVLTree(binary.BasicCodec, account.AccountCodec, defaultAccountsCacheCapacity, db)
for _, genAcc := range genDoc.Accounts {
perm := ptypes.ZeroAccountPermissions
if genAcc.Permissions != nil {
perm = *genAcc.Permissions
}
acc := &account.Account{
Address: genAcc.Address,
PubKey: nil,
Sequence: 0,
Balance: genAcc.Amount,
Permissions: perm,
}
accounts.Set(acc.Address, acc)
}
// global permissions are saved as the 0 address
// so they are included in the accounts tree
globalPerms := ptypes.DefaultAccountPermissions
if genDoc.Params != nil && genDoc.Params.GlobalPermissions != nil {
globalPerms = *genDoc.Params.GlobalPermissions
// XXX: make sure the set bits are all true
// Without it the HasPermission() functions will fail
globalPerms.Base.SetBit = ptypes.AllPermFlags
}
permsAcc := &account.Account{
Address: ptypes.GlobalPermissionsAddress,
PubKey: nil,
Sequence: 0,
Balance: 1337,
Permissions: globalPerms,
}
accounts.Set(permsAcc.Address, permsAcc)
// Make validatorInfos state tree && validators slice
validatorInfos := merkle.NewIAVLTree(binary.BasicCodec, ValidatorInfoCodec, 0, db)
validators := make([]*Validator, len(genDoc.Validators))
for i, val := range genDoc.Validators {
pubKey := val.PubKey
address := pubKey.Address()
// Make ValidatorInfo
valInfo := &ValidatorInfo{
Address: address,
PubKey: pubKey,
UnbondTo: make([]*types.TxOutput, len(val.UnbondTo)),
FirstBondHeight: 0,
FirstBondAmount: val.Amount,
}
for i, unbondTo := range val.UnbondTo {
valInfo.UnbondTo[i] = &types.TxOutput{
Address: unbondTo.Address,
Amount: unbondTo.Amount,
}
}
validatorInfos.Set(address, valInfo)
// Make validator
validators[i] = &Validator{
Address: address,
PubKey: pubKey,
VotingPower: val.Amount,
}
}
// Make namereg tree
nameReg := merkle.NewIAVLTree(binary.BasicCodec, NameRegCodec, 0, db)
// TODO: add names, contracts to genesis.json
// IAVLTrees must be persisted before copy operations.
accounts.Save()
validatorInfos.Save()
nameReg.Save()
return &State{
DB: db,
ChainID: genDoc.ChainID,
LastBlockHeight: 0,
LastBlockHash: nil,
LastBlockParts: types.PartSetHeader{},
LastBlockTime: genDoc.GenesisTime,
BondedValidators: NewValidatorSet(validators),
LastBondedValidators: NewValidatorSet(nil),
UnbondingValidators: NewValidatorSet(nil),
accounts: accounts,
validatorInfos: validatorInfos,
nameReg: nameReg,
}
}
func (s *State) LoadStorage(hash []byte) (storage merkle.Tree) {
storage = merkle.NewIAVLTree(wire.BasicCodec, wire.BasicCodec, 1024, s.DB)
storage.Load(hash)
return storage
}