The core protocol of WoopChain
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woop/node/staking.go

121 lines
4.5 KiB

package node
import (
"crypto/ecdsa"
"encoding/hex"
"math/big"
"os"
"github.com/harmony-one/harmony/core/types"
"github.com/harmony-one/harmony/contracts/structs"
"github.com/harmony-one/harmony/core"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/harmony-one/harmony/internal/utils"
"github.com/ethereum/go-ethereum/common/hexutil"
)
//constants related to staking
//The first four bytes of the call data for a function call specifies the function to be called.
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
const (
funcSingatureBytes = 4
lockPeriodInEpochs = 3 // This should be in sync with contracts/StakeLockContract.sol
)
// UpdateStakingList updates staking list from the given StakeInfo query result.
func (node *Node) UpdateStakingList(stakeInfoReturnValue *structs.StakeInfoReturnValue) {
utils.GetLogInstance().Info("Updating staking list", "contractState", stakeInfoReturnValue)
if stakeInfoReturnValue == nil {
return
}
node.CurrentStakes = make(map[common.Address]*structs.StakeInfo)
for i, addr := range stakeInfoReturnValue.LockedAddresses {
blockNum := stakeInfoReturnValue.BlockNums[i]
lockPeriodCount := stakeInfoReturnValue.LockPeriodCounts[i]
startEpoch := core.GetEpochFromBlockNumber(blockNum.Uint64())
curEpoch := core.GetEpochFromBlockNumber(node.blockchain.CurrentBlock().NumberU64())
if startEpoch == curEpoch {
continue // The token are counted into stakes at the beginning of next epoch.
}
// True if the token is still staked within the locking period.
if curEpoch-startEpoch <= lockPeriodCount.Uint64()*lockPeriodInEpochs {
blsPubKey := types.BlsPublicKey{}
copy(blsPubKey[:32], stakeInfoReturnValue.BlsPubicKeys1[i][:])
copy(blsPubKey[32:64], stakeInfoReturnValue.BlsPubicKeys2[i][:])
copy(blsPubKey[64:96], stakeInfoReturnValue.BlsPubicKeys3[i][:])
node.CurrentStakes[addr] = &structs.StakeInfo{
blsPubKey,
blockNum,
lockPeriodCount,
stakeInfoReturnValue.Amounts[i],
}
}
}
}
func (node *Node) printStakingList() {
utils.GetLogInstance().Info("\n")
utils.GetLogInstance().Info("CURRENT STAKING INFO [START] ------------------------------------")
for addr, stakeInfo := range node.CurrentStakes {
utils.GetLogInstance().Info("", "Address", addr, "BlsPubKey", hex.EncodeToString(stakeInfo.BlsPublicKey[:]), "BlockNum", stakeInfo.BlockNum, "lockPeriodCount", stakeInfo.LockPeriodCount, "amount", stakeInfo.Amount)
}
utils.GetLogInstance().Info("CURRENT STAKING INFO [END} ------------------------------------")
utils.GetLogInstance().Info("\n")
}
//The first four bytes of the call data for a function call specifies the function to be called.
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
func decodeStakeCall(getData []byte) int64 {
value := new(big.Int)
value.SetBytes(getData[funcSingatureBytes:]) //Escape the method call.
return value.Int64()
}
//The first four bytes of the call data for a function call specifies the function to be called.
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
//gets the function signature from data.
func decodeFuncSign(data []byte) string {
funcSign := hexutil.Encode(data[:funcSingatureBytes]) //The function signature is first 4 bytes of data in ethereum
return funcSign
}
// StoreStakingKeyFromFile load the staking private key and store it in local keyfile
func StoreStakingKeyFromFile(keyfile string, priKey string) *ecdsa.PrivateKey {
// contract.FakeAccounts[0] gets minted tokens in genesis block of beacon chain.
key, err := crypto.HexToECDSA(priKey)
if err != nil {
utils.GetLogInstance().Error("Unable to get staking key")
os.Exit(1)
}
if err := crypto.SaveECDSA(keyfile, key); err != nil {
utils.GetLogInstance().Error("Unable to save the private key", "error", err)
os.Exit(1)
}
// TODO(minhdoan): Enable this back.
// key, err := crypto.LoadECDSA(keyfile)
// if err != nil {
// GetLogInstance().Error("no key file. Let's create a staking private key")
// key, err = crypto.GenerateKey()
// if err != nil {
// GetLogInstance().Error("Unable to generate the private key")
// os.Exit(1)
// }
// if err = crypto.SaveECDSA(keyfile, key); err != nil {
// GetLogInstance().Error("Unable to save the private key", "error", err)
// os.Exit(1)
// }
// }
return key
}