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package state
import (
"io/ioutil"
"os"
"time"
"github.com/tendermint/tendermint/account"
"github.com/tendermint/tendermint/binary"
. "github.com/tendermint/tendermint/common"
dbm "github.com/tendermint/tendermint/db"
"github.com/tendermint/tendermint/merkle"
ptypes "github.com/tendermint/tendermint/permission/types"
"github.com/tendermint/tendermint/types"
)
//------------------------------------------------------------
// we store the gendoc in the db
var GenDocKey = []byte("GenDocKey")
//------------------------------------------------------------
// core types for a genesis definition
type BasicAccount struct {
Address []byte `json:"address"`
Amount int64 `json:"amount"`
}
type GenesisAccount struct {
Address []byte `json:"address"`
Amount int64 `json:"amount"`
Name string `json:"name"`
Permissions *ptypes.AccountPermissions `json:"permissions"`
}
type GenesisValidator struct {
PubKey account.PubKeyEd25519 `json:"pub_key"`
Amount int64 `json:"amount"`
Name string `json:"name"`
UnbondTo []BasicAccount `json:"unbond_to"`
}
type GenesisParams struct {
GlobalPermissions *ptypes.AccountPermissions `json:"global_permissions"`
}
type GenesisDoc struct {
GenesisTime time.Time `json:"genesis_time"`
ChainID string `json:"chain_id"`
Params *GenesisParams `json:"params"`
Accounts []GenesisAccount `json:"accounts"`
Validators []GenesisValidator `json:"validators"`
}
//------------------------------------------------------------
// Make genesis state from file
func GenesisDocFromJSON(jsonBlob []byte) (genState *GenesisDoc) {
var err error
binary.ReadJSON(&genState, jsonBlob, &err)
if err != nil {
log.Error(Fmt("Couldn't read GenesisDoc: %v", err))
os.Exit(1)
}
return
}
func MakeGenesisStateFromFile(db dbm.DB, genDocFile string) (*GenesisDoc, *State) {
jsonBlob, err := ioutil.ReadFile(genDocFile)
if err != nil {
log.Error(Fmt("Couldn't read GenesisDoc file: %v", err))
os.Exit(1)
}
genDoc := GenesisDocFromJSON(jsonBlob)
return genDoc, MakeGenesisState(db, genDoc)
}
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.NewDefaultAccountPermissions()
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.NewDefaultAccountPermissions()
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.AllSet
}
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 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,
}
}