Trait LoadFee

pub trait LoadFee: LoadBlock {
    // Required methods
    fn gas_oracle(&self) -> &GasPriceOracle<Self::Provider>;
    fn fee_history_cache(&self) -> &FeeHistoryCache;

    // Provided methods
    fn legacy_gas_price(
        &self,
        gas_price: Option<Uint<256, 4>>,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send { ... }
    fn eip1559_fees(
        &self,
        base_fee: Option<Uint<256, 4>>,
        max_priority_fee_per_gas: Option<Uint<256, 4>>,
    ) -> impl Future<Output = Result<(Uint<256, 4>, Uint<256, 4>), Self::Error>> + Send { ... }
    fn eip4844_blob_fee(
        &self,
        blob_fee: Option<Uint<256, 4>>,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send { ... }
    fn gas_price(
        &self,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send { ... }
    fn blob_base_fee(
        &self,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send { ... }
    fn suggested_priority_fee(
        &self,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send
       where Self: 'static { ... }
}

Loads fee from database.

Behaviour shared by several eth_ RPC methods, not exclusive to eth_ fees RPC methods.

Required Methods

fn gas_oracle(&self) -> &GasPriceOracle<Self::Provider>

Returns a handle for reading gas price.

Data access in default (L1) trait method implementations.

fn fee_history_cache(&self) -> &FeeHistoryCache

Returns a handle for reading fee history data from memory.

Data access in default (L1) trait method implementations.

Provided Methods

fn legacy_gas_price( &self, gas_price: Option<Uint<256, 4>>, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

Returns the gas price if it is set, otherwise fetches a suggested gas price for legacy transactions.

fn eip1559_fees( &self, base_fee: Option<Uint<256, 4>>, max_priority_fee_per_gas: Option<Uint<256, 4>>, ) -> impl Future<Output = Result<(Uint<256, 4>, Uint<256, 4>), Self::Error>> + Send

Returns the EIP-1559 fees if they are set, otherwise fetches a suggested gas price for EIP-1559 transactions.

Returns (base_fee, priority_fee)

fn eip4844_blob_fee( &self, blob_fee: Option<Uint<256, 4>>, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

Returns the EIP-4844 blob fee if it is set, otherwise fetches a blob fee.

fn gas_price( &self, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

Returns a suggestion for a gas price for legacy transactions.

See also: https://github.com/ethereum/pm/issues/328#issuecomment-853234014

fn blob_base_fee( &self, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

Returns a suggestion for a base fee for blob transactions.

fn suggested_priority_fee( &self, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

where Self: 'static,

Returns a suggestion for the priority fee (the tip)

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<Provider, Pool, Network, EvmConfig> LoadFee for EthApi<Provider, Pool, Network, EvmConfig>

where EthApi<Provider, Pool, Network, EvmConfig>: LoadBlock<Provider = Provider>, Provider: BlockReaderIdExt + EvmEnvProvider + ChainSpecProvider + StateProviderFactory, <Provider as ChainSpecProvider>::ChainSpec: EthChainSpec + EthereumHardforks,