157 lines
3.6 KiB
Go
157 lines
3.6 KiB
Go
package task
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"time"
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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/pub"
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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"
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"github.com/hibiken/asynq"
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"github.com/redis/go-redis/v9"
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)
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const (
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gasLockPrefix = "gas_lock:"
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gasLockExpiry = 1 * time.Hour
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)
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func AccountRefillGasProcessor(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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payload AccountPayload
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)
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if err := json.Unmarshal(t.Payload(), &payload); err != nil {
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return fmt.Errorf("account: failed %v: %w", err, asynq.SkipRetry)
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}
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// TODO: Check eth-faucet whether we can request for a topup before signing the tx.
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_, gasQuota, err := cu.PgStore.GetAccountStatusByAddress(ctx, payload.PublicKey)
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if err != nil {
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return err
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}
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gasLock, err := cu.RedisClient.Get(ctx, gasLockPrefix+payload.PublicKey).Bool()
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if !errors.Is(err, redis.Nil) {
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return err
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}
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if gasQuota > 0 || gasLock {
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return nil
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}
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// TODO: Use eth-faucet.
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lock, err := cu.LockProvider.Obtain(
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ctx,
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lockPrefix+cu.SystemContainer.PublicKey,
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cu.SystemContainer.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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nonce, err := cu.Noncestore.Acquire(ctx, cu.SystemContainer.PublicKey)
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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, cu.SystemContainer.PublicKey); nErr != nil {
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err = nErr
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}
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}
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}()
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// TODO: Review gas params
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builtTx, err := cu.CeloProvider.SignGasTransferTx(
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cu.SystemContainer.PrivateKey,
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celoutils.GasTransferTxOpts{
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To: w3.A(payload.PublicKey),
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Nonce: nonce,
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Value: cu.SystemContainer.GiftableGasValue,
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GasFeeCap: celoutils.SafeGasFeeCap,
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GasTipCap: celoutils.SafeGasTipCap,
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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.PgStore.CreateOtx(ctx, store.OTX{
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TrackingId: payload.TrackingId,
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Type: enum.REFILL_GAS,
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RawTx: hexutil.Encode(rawTx),
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TxHash: builtTx.Hash().Hex(),
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From: cu.SystemContainer.PublicKey,
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Data: hexutil.Encode(builtTx.Data()),
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GasPrice: builtTx.GasPrice().Uint64(),
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GasLimit: builtTx.Gas(),
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TransferValue: cu.SystemContainer.GiftableGasValue.Uint64(),
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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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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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eventPayload := &pub.EventPayload{
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OtxId: id,
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TrackingId: payload.TrackingId,
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TxHash: builtTx.Hash().Hex(),
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}
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if err := cu.Pub.Publish(
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pub.AccountRefillGas,
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builtTx.Hash().Hex(),
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eventPayload,
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); err != nil {
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return err
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}
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if _, err := cu.RedisClient.SetEx(ctx, gasLockPrefix+payload.PublicKey, true, gasLockExpiry).Result(); err != nil {
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return err
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}
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return nil
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}
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}
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