internal/ethapi: fix defaults for blob fields (#29037)
Co-authored-by: Martin HS <martin@swende.se>
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@ -177,6 +177,14 @@ func (args *TransactionArgs) setDefaults(ctx context.Context, b Backend) error {
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// setFeeDefaults fills in default fee values for unspecified tx fields.
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func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) error {
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head := b.CurrentHeader()
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// Sanity check the EIP-4844 fee parameters.
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if args.BlobFeeCap != nil && args.BlobFeeCap.ToInt().Sign() == 0 {
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return errors.New("maxFeePerBlobGas, if specified, must be non-zero")
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}
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if err := args.setCancunFeeDefaults(ctx, head, b); err != nil {
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return err
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}
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// If both gasPrice and at least one of the EIP-1559 fee parameters are specified, error.
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if args.GasPrice != nil && (args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil) {
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return errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified")
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@ -186,7 +194,6 @@ func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) erro
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// other tx values. See https://github.com/ethereum/go-ethereum/pull/23274
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// for more information.
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eip1559ParamsSet := args.MaxFeePerGas != nil && args.MaxPriorityFeePerGas != nil
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// Sanity check the EIP-1559 fee parameters if present.
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if args.GasPrice == nil && eip1559ParamsSet {
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if args.MaxFeePerGas.ToInt().Sign() == 0 {
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@ -198,13 +205,7 @@ func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) erro
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return nil // No need to set anything, user already set MaxFeePerGas and MaxPriorityFeePerGas
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}
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// Sanity check the EIP-4844 fee parameters.
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if args.BlobFeeCap != nil && args.BlobFeeCap.ToInt().Sign() == 0 {
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return errors.New("maxFeePerBlobGas must be non-zero")
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}
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// Sanity check the non-EIP-1559 fee parameters.
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head := b.CurrentHeader()
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isLondon := b.ChainConfig().IsLondon(head.Number)
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if args.GasPrice != nil && !eip1559ParamsSet {
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// Zero gas-price is not allowed after London fork
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@ -215,21 +216,14 @@ func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) erro
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}
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// Now attempt to fill in default value depending on whether London is active or not.
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if b.ChainConfig().IsCancun(head.Number, head.Time) {
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if err := args.setCancunFeeDefaults(ctx, head, b); err != nil {
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return err
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}
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} else if isLondon {
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if args.BlobFeeCap != nil {
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return errors.New("maxFeePerBlobGas is not valid before Cancun is active")
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}
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if isLondon {
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// London is active, set maxPriorityFeePerGas and maxFeePerGas.
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if err := args.setLondonFeeDefaults(ctx, head, b); err != nil {
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return err
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}
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} else {
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if args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil || args.BlobFeeCap != nil {
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return errors.New("maxFeePerGas and maxPriorityFeePerGas and maxFeePerBlobGas are not valid before London is active")
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if args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil {
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return errors.New("maxFeePerGas and maxPriorityFeePerGas are not valid before London is active")
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}
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// London not active, set gas price.
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price, err := b.SuggestGasTipCap(ctx)
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@ -245,15 +239,19 @@ func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) erro
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func (args *TransactionArgs) setCancunFeeDefaults(ctx context.Context, head *types.Header, b Backend) error {
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// Set maxFeePerBlobGas if it is missing.
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if args.BlobHashes != nil && args.BlobFeeCap == nil {
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var excessBlobGas uint64
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if head.ExcessBlobGas != nil {
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excessBlobGas = *head.ExcessBlobGas
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}
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// ExcessBlobGas must be set for a Cancun block.
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blobBaseFee := eip4844.CalcBlobFee(*head.ExcessBlobGas)
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blobBaseFee := eip4844.CalcBlobFee(excessBlobGas)
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// Set the max fee to be 2 times larger than the previous block's blob base fee.
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// The additional slack allows the tx to not become invalidated if the base
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// fee is rising.
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val := new(big.Int).Mul(blobBaseFee, big.NewInt(2))
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args.BlobFeeCap = (*hexutil.Big)(val)
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}
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return args.setLondonFeeDefaults(ctx, head, b)
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return nil
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}
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// setLondonFeeDefaults fills in reasonable default fee values for unspecified fields.
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@ -153,14 +153,14 @@ func TestSetFeeDefaults(t *testing.T) {
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"legacy",
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&TransactionArgs{MaxFeePerGas: maxFee},
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nil,
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errors.New("maxFeePerGas and maxPriorityFeePerGas and maxFeePerBlobGas are not valid before London is active"),
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errors.New("maxFeePerGas and maxPriorityFeePerGas are not valid before London is active"),
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},
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{
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"dynamic fee tx pre-London, priorityFee set",
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"legacy",
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&TransactionArgs{MaxPriorityFeePerGas: fortytwo},
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nil,
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errors.New("maxFeePerGas and maxPriorityFeePerGas and maxFeePerBlobGas are not valid before London is active"),
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errors.New("maxFeePerGas and maxPriorityFeePerGas are not valid before London is active"),
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},
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{
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"dynamic fee tx, maxFee < priorityFee",
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@ -207,20 +207,6 @@ func TestSetFeeDefaults(t *testing.T) {
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errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified"),
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},
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// EIP-4844
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{
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"set maxFeePerBlobGas pre cancun",
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"london",
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&TransactionArgs{BlobFeeCap: fortytwo},
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nil,
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errors.New("maxFeePerBlobGas is not valid before Cancun is active"),
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},
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{
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"set maxFeePerBlobGas pre london",
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"legacy",
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&TransactionArgs{BlobFeeCap: fortytwo},
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nil,
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errors.New("maxFeePerGas and maxPriorityFeePerGas and maxFeePerBlobGas are not valid before London is active"),
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},
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{
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"set gas price and maxFee for blob transaction",
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"cancun",
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@ -235,6 +221,13 @@ func TestSetFeeDefaults(t *testing.T) {
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&TransactionArgs{BlobHashes: []common.Hash{}, BlobFeeCap: (*hexutil.Big)(big.NewInt(4)), MaxFeePerGas: maxFee, MaxPriorityFeePerGas: fortytwo},
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nil,
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},
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{
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"fill maxFeePerBlobGas when dynamic fees are set",
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"cancun",
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&TransactionArgs{BlobHashes: []common.Hash{}, MaxFeePerGas: maxFee, MaxPriorityFeePerGas: fortytwo},
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&TransactionArgs{BlobHashes: []common.Hash{}, BlobFeeCap: (*hexutil.Big)(big.NewInt(4)), MaxFeePerGas: maxFee, MaxPriorityFeePerGas: fortytwo},
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nil,
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},
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}
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ctx := context.Background()
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@ -244,11 +237,16 @@ func TestSetFeeDefaults(t *testing.T) {
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}
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got := test.in
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err := got.setFeeDefaults(ctx, b)
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if err != nil && err.Error() == test.err.Error() {
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// Test threw expected error.
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if err != nil {
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if test.err == nil {
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t.Fatalf("test %d (%s): unexpected error: %s", i, test.name, err)
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} else if err.Error() != test.err.Error() {
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t.Fatalf("test %d (%s): unexpected error: (got: %s, want: %s)", i, test.name, err, test.err)
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}
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// Matching error.
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continue
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} else if err != nil {
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t.Fatalf("test %d (%s): unexpected error: %s", i, test.name, err)
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} else if test.err != nil {
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t.Fatalf("test %d (%s): expected error: %s", i, test.name, test.err)
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}
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if !reflect.DeepEqual(got, test.want) {
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t.Fatalf("test %d (%s): did not fill defaults as expected: (got: %v, want: %v)", i, test.name, got, test.want)
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