Trait EstimateCall 

pub trait EstimateCall: Call {
    // Provided methods
    fn estimate_gas_with<S>(
        &self,
        evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::BlockEnv>,
        request: <<Self::RpcConvert as RpcConvert>::Network as RpcTypes>::TransactionRequest,
        state: S,
        state_override: Option<HashMap<Address, AccountOverride, FbBuildHasher<20>>>,
    ) -> Result<Uint<256, 4>, Self::Error>
       where S: StateProvider { ... }
    fn estimate_gas_at(
        &self,
        request: <<Self::RpcConvert as RpcConvert>::Network as RpcTypes>::TransactionRequest,
        at: BlockId,
        state_override: Option<HashMap<Address, AccountOverride, FbBuildHasher<20>>>,
    ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send
       where Self: LoadPendingBlock { ... }
    fn map_out_of_gas_err<DB>(
        evm: &mut <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Evm<DB, NoOpInspector>,
        tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx,
        max_gas_limit: u64,
    ) -> Result<Uint<256, 4>, Self::Error>
       where DB: Database<Error = ProviderError>,
             EthApiError: From<<DB as Database>::Error> { ... }
}

Gas execution estimates

Provided Methods

fn estimate_gas_with<S>( &self, evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::BlockEnv>, request: <<Self::RpcConvert as RpcConvert>::Network as RpcTypes>::TransactionRequest, state: S, state_override: Option<HashMap<Address, AccountOverride, FbBuildHasher<20>>>, ) -> Result<Uint<256, 4>, Self::Error>

where S: StateProvider,

Estimates the gas usage of the request with the state.

This will execute the RpcTxReq and find the best gas limit via binary search.

EVM settings

This modifies certain EVM settings to mirror geth’s SkipAccountChecks when transacting requests, see also: https://github.com/ethereum/go-ethereum/blob/380688c636a654becc8f114438c2a5d93d2db032/core/state_transition.go#L145-L148:

• disable_eip3607 is set to true
• disable_base_fee is set to true
• nonce is set to None

fn estimate_gas_at( &self, request: <<Self::RpcConvert as RpcConvert>::Network as RpcTypes>::TransactionRequest, at: BlockId, state_override: Option<HashMap<Address, AccountOverride, FbBuildHasher<20>>>, ) -> impl Future<Output = Result<Uint<256, 4>, Self::Error>> + Send

where Self: LoadPendingBlock,

Estimate gas needed for execution of the request at the BlockId.

fn map_out_of_gas_err<DB>( evm: &mut <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Evm<DB, NoOpInspector>, tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx, max_gas_limit: u64, ) -> Result<Uint<256, 4>, Self::Error>

where DB: Database<Error = ProviderError>, EthApiError: From<<DB as Database>::Error>,

Executes the requests again after an out of gas error to check if the error is gas related or not

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<N, Rpc> EstimateCall for EthApi<N, Rpc>

where EthApiError: FromEvmError<<N as RpcNodeCore>::Evm>, Rpc: RpcConvert<Primitives = <N as RpcNodeCore>::Primitives, Error = EthApiError, Evm = <N as RpcNodeCore>::Evm>, N: RpcNodeCore,