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eth/gasestimator: include blobs in virtual balance computation #29703

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merged 4 commits into from
May 7, 2024
Merged

eth/gasestimator: include blobs in virtual balance computation #29703

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f83fe44
Fix: eth_estimateGas with blobs fails when capped by limited funds
nand2 May 3, 2024
fcee524
blobBalanceUsage: Adding check for balance.
nand2 May 7, 2024
a976688
Update gasestimator.go
fjl May 7, 2024
e41244d
Update gasestimator.go
fjl May 7, 2024
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8 changes: 8 additions & 0 deletions eth/gasestimator/gasestimator.go
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,14 @@ func Estimate(ctx context.Context, call *core.Message, opts *Options, gasCap uin
}
available.Sub(available, call.Value)
}
if opts.Config.IsCancun(opts.Header.Number, opts.Header.Time) && len(call.BlobHashes) > 0 {
blobBalanceUsage := new(big.Int).SetInt64(int64(len(call.BlobHashes) * params.BlobTxBlobGasPerBlob))
blobBalanceUsage.Mul(blobBalanceUsage, call.BlobGasFeeCap)
if blobBalanceUsage.Cmp(available) >= 0 {
return 0, nil, core.ErrInsufficientFunds
}
available.Sub(available, blobBalanceUsage)
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I think we need another check for balance > blobBalanceUsage here, otherwise it could go negative.

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@nand2 nand2 May 6, 2024 •
edited

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You're right! Which one of the following options would you use for the error?

  • Using core.ErrInsufficientFunds as error, keeping insufficient funds for gas * price + value as description,
  • Using core.ErrInsufficientFunds as error, changing description to insufficient funds for gas * price + blobGas * blobGasPrice + value as description,
  • creating and using a new error, ErrEip4844InsufficientFunds with insufficient funds for gas * price + blobGas * blobGasPrice + value as description ?

I guess option 3?

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Added option 1/ for now, let me know.

}
allowance := new(big.Int).Div(available, feeCap)

// If the allowance is larger than maximum uint64, skip checking
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