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rewards.go
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rewards.go
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/*
* Copyright (c) 2019 QLC Chain Team
*
* This software is released under the MIT License.
* https://opensource.org/licenses/MIT
*/
package api
import (
"encoding/hex"
"errors"
"fmt"
"math/big"
"sync/atomic"
"github.com/qlcchain/go-qlc/common/event"
"go.uber.org/zap"
"github.com/qlcchain/go-qlc/common"
"github.com/qlcchain/go-qlc/common/types"
"github.com/qlcchain/go-qlc/ledger"
"github.com/qlcchain/go-qlc/log"
"github.com/qlcchain/go-qlc/vm/contract"
cabi "github.com/qlcchain/go-qlc/vm/contract/abi"
"github.com/qlcchain/go-qlc/vm/vmstore"
)
type RewardsApi struct {
logger *zap.SugaredLogger
ledger *ledger.Ledger
rewards *contract.AirdropRewords
confidantRewards *contract.ConfidantRewards
syncState atomic.Value
}
type sendParam struct {
*cabi.RewardsParam
self *types.Address
//am *types.AccountMeta
tm *types.TokenMeta
}
func NewRewardsApi(l *ledger.Ledger, eb event.EventBus) *RewardsApi {
api := &RewardsApi{
ledger: l,
logger: log.NewLogger("api_rewards"),
rewards: &contract.AirdropRewords{},
confidantRewards: &contract.ConfidantRewards{},
}
api.syncState.Store(common.SyncNotStart)
_, _ = eb.SubscribeSync(common.EventPovSyncState, api.OnPovSyncState)
return api
}
type RewardsParam struct {
Id string `json:"Id"`
Amount types.Balance `json:"amount"`
Self types.Address `json:"self"`
To types.Address `json:"to"`
}
func (r *RewardsApi) OnPovSyncState(state common.SyncState) {
r.logger.Infof("reward receive pov sync state [%s]", state)
r.syncState.Store(state)
}
func (r *RewardsApi) GetUnsignedRewardData(param *RewardsParam) (types.Hash, error) {
if param == nil {
return types.ZeroHash, ErrParameterNil
}
return r.generateHash(param, cabi.MethodNameUnsignedAirdropRewards, func(param *RewardsParam) (bytes []byte, e error) {
return hex.DecodeString(param.Id)
})
}
func (r *RewardsApi) GetUnsignedConfidantData(param *RewardsParam) (types.Hash, error) {
if param == nil {
return types.ZeroHash, ErrParameterNil
}
return r.generateHash(param, cabi.MethodNameUnsignedConfidantRewards, func(param *RewardsParam) (bytes []byte, e error) {
h := types.HashData([]byte(param.Id))
return h[:], nil
})
}
func (r *RewardsApi) generateHash(param *RewardsParam, methodName string, fn func(param *RewardsParam) ([]byte, error)) (types.Hash, error) {
if param == nil {
return types.ZeroHash, ErrParameterNil
}
if len(param.Id) == 0 || param.Amount.IsZero() || param.Self.IsZero() || param.To.IsZero() {
return types.ZeroHash, errors.New("invalid param")
}
id, err := fn(param)
if err != nil {
return types.ZeroHash, err
}
var txHash types.Hash
var rxHash types.Hash
if tm, err := r.ledger.GetTokenMeta(param.Self, common.GasToken()); tm != nil && err == nil {
txHash = tm.Header
} else {
return types.ZeroHash, err
}
if b, err := r.ledger.HasTokenMeta(param.To, common.GasToken()); err != nil {
return types.ZeroHash, err
} else {
if b {
tm, _ := r.ledger.GetTokenMeta(param.To, common.GasToken())
rxHash = tm.Header
} else {
rxHash = types.ZeroHash
}
}
r.logger.Debugf("%s %s %s %s %s", methodName, param.To.String(), txHash.String(), rxHash.String(), param.Amount.Int)
if data, err := cabi.RewardsABI.PackMethod(methodName, id, param.To, txHash, rxHash, param.Amount.Int); err == nil {
return types.HashData(data), nil
} else {
return types.ZeroHash, err
}
}
func (r *RewardsApi) GetSendRewardBlock(param *RewardsParam, sign *types.Signature) (*types.StateBlock, error) {
if param == nil || sign == nil {
return nil, ErrParameterNil
}
if ss := r.syncState.Load().(common.SyncState); ss != common.SyncDone {
return nil, errors.New("pov sync is not finished, please check it")
}
if p, err := r.verifySign(param, sign, cabi.MethodNameUnsignedAirdropRewards, func(param *RewardsParam) (types.Hash, error) {
bytes, err := hex.DecodeString(param.Id)
if err != nil {
return types.ZeroHash, err
}
h, err := types.BytesToHash(bytes)
if err != nil {
return types.ZeroHash, err
}
return h, nil
}); err == nil {
return r.generateSend(p, cabi.MethodNameAirdropRewards)
} else {
return nil, err
}
}
func (r *RewardsApi) GetSendConfidantBlock(param *RewardsParam, sign *types.Signature) (*types.StateBlock, error) {
if param == nil || sign == nil {
return nil, ErrParameterNil
}
if ss := r.syncState.Load().(common.SyncState); ss != common.SyncDone {
return nil, errors.New("pov sync is not finished, please check it")
}
if p, err := r.verifySign(param, sign, cabi.MethodNameUnsignedConfidantRewards, func(param *RewardsParam) (types.Hash, error) {
h := types.HashData([]byte(param.Id))
return h, nil
}); err == nil {
return r.generateSend(p, cabi.MethodNameConfidantRewards)
} else {
return nil, err
}
}
func (r *RewardsApi) verifySign(param *RewardsParam, sign *types.Signature, methodName string, fn func(param *RewardsParam) (types.Hash, error)) (*sendParam, error) {
if param == nil || sign == nil {
return nil, ErrParameterNil
}
if len(param.Id) == 0 || param.Amount.IsZero() || param.Self.IsZero() || param.To.IsZero() {
return nil, errors.New("invalid param")
}
id, err := fn(param)
if err != nil {
return nil, err
}
if _, err := r.ledger.HasTokenMeta(param.Self, common.GasToken()); err != nil {
return nil, err
}
am, _ := r.ledger.GetAccountMeta(param.Self)
tm := am.Token(common.GasToken())
txHash := tm.Header
var rxHash types.Hash
if b, err := r.ledger.HasTokenMeta(param.To, common.GasToken()); err != nil {
return nil, err
} else {
if b {
tm, _ := r.ledger.GetTokenMeta(param.To, common.GasToken())
rxHash = tm.Header
} else {
rxHash = types.ZeroHash
}
}
p := &sendParam{
RewardsParam: &cabi.RewardsParam{
Id: id,
Beneficial: param.To,
TxHeader: txHash,
RxHeader: rxHash,
Amount: param.Amount.Int,
Sign: *sign,
},
self: ¶m.Self,
//am: am,
tm: tm,
}
r.logger.Debugf("verify %s %s %s %s %s", methodName, param.To.String(), txHash.String(), rxHash.String(), param.Amount.Int)
if b, err := p.RewardsParam.Verify(param.Self, methodName); b && err == nil {
return p, nil
} else {
return nil, err
}
}
func (r *RewardsApi) generateSend(param *sendParam, methodName string) (*types.StateBlock, error) {
if param == nil {
return nil, ErrParameterNil
}
povHeader, err := r.ledger.GetLatestPovHeader()
if err != nil {
return nil, fmt.Errorf("get pov header error: %s", err)
}
if singedData, err := cabi.RewardsABI.PackMethod(methodName, param.Id, param.Beneficial, param.TxHeader, param.RxHeader, param.Amount, param.Sign); err == nil {
return &types.StateBlock{
Type: types.ContractSend,
Token: param.tm.Type,
Address: *param.self,
Balance: param.tm.Balance.Sub(types.Balance{Int: param.Amount}),
Vote: types.ZeroBalance,
Network: types.ZeroBalance,
Oracle: types.ZeroBalance,
Storage: types.ZeroBalance,
Previous: param.tm.Header,
Link: types.Hash(types.RewardsAddress),
Representative: param.tm.Representative,
Data: singedData,
PoVHeight: povHeader.GetHeight(),
Timestamp: common.TimeNow().Unix(),
}, nil
} else {
return nil, err
}
}
func (r *RewardsApi) GetReceiveRewardBlock(send *types.Hash) (*types.StateBlock, error) {
if send == nil {
return nil, ErrParameterNil
}
if ss := r.syncState.Load().(common.SyncState); ss != common.SyncDone {
return nil, errors.New("pov sync is not finished, please check it")
}
blk, err := r.ledger.GetStateBlock(*send)
if err != nil {
return nil, err
}
rev := &types.StateBlock{}
var result []*contract.ContractBlock
vmContext := vmstore.NewVMContext(r.ledger)
if r.IsAirdropRewards(blk.Data) {
result, err = r.rewards.DoReceive(vmContext, rev, blk)
} else {
result, err = r.confidantRewards.DoReceive(vmContext, rev, blk)
}
if err == nil {
if len(result) > 0 {
povHeader, err := r.ledger.GetLatestPovHeader()
if err != nil {
return nil, fmt.Errorf("get pov header error: %s", err)
}
rev.PoVHeight = povHeader.GetHeight()
rev.Timestamp = common.TimeNow().Unix()
h := result[0].VMContext.Cache.Trie().Hash()
if h != nil {
rev.Extra = *h
}
return rev, nil
} else {
return nil, err
}
} else {
return nil, fmt.Errorf("can not generate reward block, %s", err)
}
}
func (r *RewardsApi) IsAirdropRewards(data []byte) bool {
if s, err := checkContractMethod(data); err == nil && s == cabi.MethodNameAirdropRewards {
return true
}
return false
}
func (r *RewardsApi) GetTotalRewards(txId string) (*big.Int, error) {
return cabi.GetTotalRewards(vmstore.NewVMContext(r.ledger), txId)
}
func (r *RewardsApi) GetRewardsDetail(txId string) ([]*cabi.RewardsInfo, error) {
return cabi.GetRewardsDetail(vmstore.NewVMContext(r.ledger), txId)
}
func (r *RewardsApi) GetConfidantRewards(confidant types.Address) (map[string]*big.Int, error) {
return cabi.GetConfidantRewords(vmstore.NewVMContext(r.ledger), confidant)
}
func (r *RewardsApi) GetConfidantRewordsDetail(confidant types.Address) (map[string][]*cabi.RewardsInfo, error) {
return cabi.GetConfidantRewordsDetail(vmstore.NewVMContext(r.ledger), confidant)
}
func checkContractMethod(data []byte) (string, error) {
if name, b, err := contract.GetChainContractName(types.RewardsAddress, data); b {
return name, nil
} else {
return "", err
}
}