mirror of
https://github.com/grassrootseconomics/cic-custodial.git
synced 2024-10-31 21:26:45 +01:00
Mohamed Sohail
9e1d62a014
* wip: add transfer auithorization * feat: update transferAuthPayload * switch to MAX_INT for value and use revoke flag * tranfer handler: fix nonce rollback on EOA account * feat: switch to session based session transfer auth * Demurrage contracts require setting the approval value to 0 before updating the value after the initial limit is set * This implementation auto-revokes every 15 min after arequest is created. Subsequent requests will fail untill the value is set back to 0 * feat: settable approve session timeout
169 lines
3.7 KiB
Go
169 lines
3.7 KiB
Go
package task
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import (
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"context"
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"encoding/json"
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"math/big"
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"github.com/bsm/redislock"
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"github.com/celo-org/celo-blockchain/common/hexutil"
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"github.com/grassrootseconomics/celoutils"
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"github.com/grassrootseconomics/cic-custodial/internal/custodial"
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"github.com/grassrootseconomics/cic-custodial/internal/store"
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"github.com/grassrootseconomics/cic-custodial/internal/tasker"
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"github.com/grassrootseconomics/cic-custodial/pkg/enum"
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"github.com/grassrootseconomics/w3-celo-patch/module/eth"
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"github.com/hibiken/asynq"
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)
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type TransferPayload struct {
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TrackingId string `json:"trackingId"`
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From string `json:"from" `
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To string `json:"to"`
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VoucherAddress string `json:"voucherAddress"`
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Amount uint64 `json:"amount"`
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}
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func SignTransfer(cu *custodial.Custodial) func(context.Context, *asynq.Task) error {
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return func(ctx context.Context, t *asynq.Task) error {
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var (
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err error
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networkBalance big.Int
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payload TransferPayload
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)
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if err := json.Unmarshal(t.Payload(), &payload); err != nil {
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return err
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}
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lock, err := cu.LockProvider.Obtain(
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ctx,
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lockPrefix+payload.From,
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lockTimeout,
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&redislock.Options{
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RetryStrategy: lockRetry(),
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},
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)
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if err != nil {
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return err
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}
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defer lock.Release(ctx)
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key, err := cu.Store.LoadPrivateKey(ctx, payload.From)
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if err != nil {
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return err
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}
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nonce, err := cu.Noncestore.Acquire(ctx, payload.From)
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if err != nil {
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return err
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}
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defer func() {
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if err != nil {
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if nErr := cu.Noncestore.Return(ctx, payload.From); nErr != nil {
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err = nErr
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}
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}
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}()
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input, err := cu.Abis[custodial.Transfer].EncodeArgs(
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celoutils.HexToAddress(payload.To),
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new(big.Int).SetUint64(payload.Amount),
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)
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if err != nil {
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return err
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}
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builtTx, err := cu.CeloProvider.SignContractExecutionTx(
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key,
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celoutils.ContractExecutionTxOpts{
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ContractAddress: celoutils.HexToAddress(payload.VoucherAddress),
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InputData: input,
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GasFeeCap: celoutils.SafeGasFeeCap,
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GasTipCap: celoutils.SafeGasTipCap,
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GasLimit: uint64(celoutils.SafeGasLimit),
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Nonce: nonce,
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},
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)
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if err != nil {
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return err
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}
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rawTx, err := builtTx.MarshalBinary()
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if err != nil {
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return err
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}
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id, err := cu.Store.CreateOtx(ctx, store.Otx{
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TrackingId: payload.TrackingId,
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Type: enum.TRANSFER_VOUCHER,
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RawTx: hexutil.Encode(rawTx),
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TxHash: builtTx.Hash().Hex(),
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From: payload.From,
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Data: hexutil.Encode(builtTx.Data()),
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GasPrice: builtTx.GasPrice(),
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GasLimit: builtTx.Gas(),
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TransferValue: payload.Amount,
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Nonce: builtTx.Nonce(),
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})
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if err != nil {
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return err
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}
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if err := cu.CeloProvider.Client.CallCtx(
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ctx,
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eth.Balance(celoutils.HexToAddress(payload.From), nil).Returns(&networkBalance),
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); err != nil {
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return err
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}
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disptachJobPayload, err := json.Marshal(TxPayload{
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OtxId: id,
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Tx: builtTx,
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})
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if err != nil {
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return err
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}
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_, err = cu.TaskerClient.CreateTask(
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ctx,
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tasker.DispatchTxTask,
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tasker.HighPriority,
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&tasker.Task{
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Payload: disptachJobPayload,
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},
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)
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if err != nil {
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return err
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}
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gasRefillPayload, err := json.Marshal(AccountPayload{
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PublicKey: payload.From,
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TrackingId: payload.TrackingId,
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})
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if err != nil {
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return err
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}
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if !balanceCheck(networkBalance) {
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if err := cu.Store.GasLock(ctx, payload.From); err != nil {
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return err
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}
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_, err = cu.TaskerClient.CreateTask(
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ctx,
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tasker.AccountRefillGasTask,
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tasker.DefaultPriority,
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&tasker.Task{
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Payload: gasRefillPayload,
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},
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)
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if err != nil {
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return err
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}
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}
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return nil
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}
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}
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