Struct GasFiller

pub struct GasFiller;

A TxFiller that populates gas related fields in transaction requests if unset.

Gas related fields are gas_price, gas_limit, max_fee_per_gas max_priority_fee_per_gas and max_fee_per_blob_gas.

The layer fetches the estimations for these via the Provider::get_gas_price, Provider::estimate_gas and Provider::estimate_eip1559_fees methods.

Note:

The layer will populate gas fields based on the following logic:

• if gas_price is set, it will process as a legacy tx and populate the gas_limit field if unset.
• if access_list is set, it will process as a 2930 tx and populate the gas_limit and gas_price field if unset.
• if blob_sidecar is set, it will process as a 4844 tx and populate the gas_limit, max_fee_per_gas, max_priority_fee_per_gas and max_fee_per_blob_gas fields if unset.
• Otherwise, it will process as a EIP-1559 tx and populate the gas_limit, max_fee_per_gas and max_priority_fee_per_gas fields if unset.
• If the network does not support EIP-1559, it will fallback to the legacy tx and populate the gas_limit and gas_price fields if unset.

Example

let pk: PrivateKeySigner = "0x...".parse()?;
let provider =
    ProviderBuilder::<_, _, Ethereum>::default().with_gas_estimation().wallet(pk).on_http(url);

provider.send_transaction(TransactionRequest::default()).await;

Trait Implementations

impl Clone for GasFiller

fn clone(&self) -> GasFiller

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GasFiller

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GasFiller

fn default() -> GasFiller

Returns the “default value” for a type.

impl<N: Network> TxFiller<N> for GasFiller

type Fillable = GasFillable

The properties that this filler retrieves from the RPC. to fill in the TransactionRequest.

fn status(&self, tx: &<N as Network>::TransactionRequest) -> FillerControlFlow

Return a control-flow enum indicating whether the filler is ready to fill in the transaction request, or if it is missing required properties.

fn fill_sync(&self, _tx: &mut SendableTx<N>)

Performs any synchronous filling. This should be called before TxFiller::prepare and TxFiller::fill to fill in any properties that can be filled synchronously.

async fn prepare<P>( &self, provider: &P, tx: &<N as Network>::TransactionRequest, ) -> TransportResult<Self::Fillable>

where P: Provider<N>,

Prepares fillable properties, potentially by making an RPC request.

async fn fill( &self, fillable: Self::Fillable, tx: SendableTx<N>, ) -> TransportResult<SendableTx<N>>

Fills in the transaction request with the fillable properties.

fn join_with<T>(self, other: T) -> JoinFill<Self, T>

where T: TxFiller<N>,

Joins this filler with another filler to compose multiple fillers.

fn continue_filling(&self, tx: &SendableTx<N>) -> bool

Returns true if the filler is should continue filling.

fn ready(&self, tx: &N::TransactionRequest) -> bool

Returns true if the filler is ready to fill in the transaction request.

fn finished(&self, tx: &N::TransactionRequest) -> bool

Returns true if the filler is finished filling in the transaction request.

fn prepare_and_fill<P>( &self, provider: &P, tx: SendableTx<N>, ) -> impl Send + Future<Output = TransportResult<SendableTx<N>>>

where P: Provider<N>,

Prepares and fills the transaction request with the fillable properties.

fn prepare_call( &self, tx: &mut N::TransactionRequest, ) -> impl Send + Future<Output = TransportResult<()>>

Prepares transaction request with necessary fillers required for eth_call operations asyncronously

fn prepare_call_sync( &self, tx: &mut N::TransactionRequest, ) -> TransportResult<()>

Prepares transaction request with necessary fillers required for eth_call operations syncronously

impl Copy for GasFiller

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 0 bytes