Trait Call

pub trait Call: LoadState + SpawnBlocking
where
    Self::Evm: ConfigureEvm,
    <Self::Evm as ConfigureEvm>::Primitives: NodePrimitives<BlockHeader = <Self::Provider as HeaderProvider>::Header, SignedTx = <Self::Provider as TransactionsProvider>::Transaction>,
    Self::Error: FromEvmError<Self::Evm>,
{
    // Required methods
    fn call_gas_limit(&self) -> u64;
    fn max_simulate_blocks(&self) -> u64;
    fn create_txn_env(
        &self,
        evm_env: &EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>,
        request: TransactionRequest,
        db: impl Database>,
    ) -> Result<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx, Self::Error>
       where <impl Database as Database>::Error: Into<EthApiError>;

    // Provided methods
    fn with_state_at_block<F, R>(
        &self,
        at: BlockId,
        f: F,
    ) -> Result<R, Self::Error>
       where F: FnOnce(StateProviderTraitObjWrapper<'_>) -> Result<R, Self::Error> { ... }
    fn transact<DB>(
        &self,
        db: DB,
        evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>,
        tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx,
    ) -> Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>
       where DB: Database<Error = ProviderError> { ... }
    fn transact_with_inspector<DB, I>(
        &self,
        db: DB,
        evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>,
        tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx,
        inspector: I,
    ) -> Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>
       where DB: Database<Error = ProviderError>,
             I: InspectorFor<Self::Evm, DB> { ... }
    fn transact_call_at(
        &self,
        request: TransactionRequest,
        at: BlockId,
        overrides: EvmOverrides,
    ) -> impl Future<Output = Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>> + Send
       where Self: LoadPendingBlock { ... }
    fn spawn_with_state_at_block<F, R>(
        &self,
        at: BlockId,
        f: F,
    ) -> impl Future<Output = Result<R, Self::Error>> + Send
       where F: FnOnce(StateProviderTraitObjWrapper<'_>) -> Result<R, Self::Error> + Send + 'static,
             R: Send + 'static { ... }
    fn spawn_with_call_at<F, R>(
        &self,
        request: TransactionRequest,
        at: BlockId,
        overrides: EvmOverrides,
        f: F,
    ) -> impl Future<Output = Result<R, Self::Error>> + Send
       where Self: LoadPendingBlock,
             F: FnOnce(StateCacheDbRefMutWrapper<'_, '_>, EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx) -> Result<R, Self::Error> + Send + 'static,
             R: Send + 'static { ... }
    fn spawn_replay_transaction<F, R>(
        &self,
        hash: FixedBytes<32>,
        f: F,
    ) -> impl Future<Output = Result<Option<R>, Self::Error>> + Send
       where Self: LoadBlock + LoadTransaction,
             F: FnOnce(TransactionInfo, ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, CacheDB<StateProviderDatabase<StateProviderTraitObjWrapper<'_>>>) -> Result<R, Self::Error> + Send + 'static,
             R: Send + 'static { ... }
    fn replay_transactions_until<'a, DB, I>(
        &self,
        db: &mut DB,
        evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>,
        transactions: I,
        target_tx_hash: FixedBytes<32>,
    ) -> Result<usize, Self::Error>
       where DB: Database<Error = ProviderError> + DatabaseCommit,
             I: IntoIterator<Item = Recovered<&'a <Self::Provider as TransactionsProvider>::Transaction>> { ... }
    fn prepare_call_env<DB>(
        &self,
        evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>,
        request: TransactionRequest,
        db: &mut CacheDB<DB>,
        overrides: EvmOverrides,
    ) -> Result<(EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx), Self::Error>
       where DB: DatabaseRef,
             EthApiError: From<<DB as DatabaseRef>::Error> { ... }
}

Available on crate feature rpc only.

Executes code on state.

Required Methods

fn call_gas_limit(&self) -> u64

Returns default gas limit to use for eth_call and tracing RPC methods.

Data access in default trait method implementations.

fn max_simulate_blocks(&self) -> u64

Returns the maximum number of blocks accepted for eth_simulateV1.

fn create_txn_env( &self, evm_env: &EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, request: TransactionRequest, db: impl Database>, ) -> Result<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx, Self::Error>

where <impl Database as Database>::Error: Into<EthApiError>,

Configures a new TxEnv for the TransactionRequest

All TxEnv fields are derived from the given TransactionRequest, if fields are None, they fall back to the EvmEnv’s settings.

Provided Methods

fn with_state_at_block<F, R>(&self, at: BlockId, f: F) -> Result<R, Self::Error>

where F: FnOnce(StateProviderTraitObjWrapper<'_>) -> Result<R, Self::Error>,

Executes the closure with the state that corresponds to the given BlockId.

fn transact<DB>( &self, db: DB, evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx, ) -> Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>

where DB: Database<Error = ProviderError>,

Executes the TxEnv against the given [Database] without committing state changes.

fn transact_with_inspector<DB, I>( &self, db: DB, evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, tx_env: <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx, inspector: I, ) -> Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>

where DB: Database<Error = ProviderError>, I: InspectorFor<Self::Evm, DB>,

Executes the EvmEnv against the given [Database] without committing state changes.

fn transact_call_at( &self, request: TransactionRequest, at: BlockId, overrides: EvmOverrides, ) -> impl Future<Output = Result<(ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, (EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx)), Self::Error>> + Send

where Self: LoadPendingBlock,

Executes the call request at the given BlockId.

fn spawn_with_state_at_block<F, R>( &self, at: BlockId, f: F, ) -> impl Future<Output = Result<R, Self::Error>> + Send

where F: FnOnce(StateProviderTraitObjWrapper<'_>) -> Result<R, Self::Error> + Send + 'static, R: Send + 'static,

Executes the closure with the state that corresponds to the given BlockId on a new task

fn spawn_with_call_at<F, R>( &self, request: TransactionRequest, at: BlockId, overrides: EvmOverrides, f: F, ) -> impl Future<Output = Result<R, Self::Error>> + Send

where Self: LoadPendingBlock, F: FnOnce(StateCacheDbRefMutWrapper<'_, '_>, EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx) -> Result<R, Self::Error> + Send + 'static, R: Send + 'static,

Prepares the state and env for the given TransactionRequest at the given BlockId and executes the closure on a new task returning the result of the closure.

This returns the configured EvmEnv for the given TransactionRequest at the given BlockId and with configured call settings: prepare_call_env.

This is primarily used by eth_call.

Blocking behaviour

This assumes executing the call is relatively more expensive on IO than CPU because it transacts a single transaction on an empty in memory database. Because eth_calls are usually allowed to consume a lot of gas, this also allows a lot of memory operations so we assume this is not primarily CPU bound and instead spawn the call on a regular tokio task instead, where blocking IO is less problematic.

fn spawn_replay_transaction<F, R>( &self, hash: FixedBytes<32>, f: F, ) -> impl Future<Output = Result<Option<R>, Self::Error>> + Send

where Self: LoadBlock + LoadTransaction, F: FnOnce(TransactionInfo, ResultAndState<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::HaltReason>, CacheDB<StateProviderDatabase<StateProviderTraitObjWrapper<'_>>>) -> Result<R, Self::Error> + Send + 'static, R: Send + 'static,

Retrieves the transaction if it exists and executes it.

Before the transaction is executed, all previous transaction in the block are applied to the state by executing them first. The callback f is invoked with the [ResultAndState] after the transaction was executed and the database that points to the beginning of the transaction.

Note: Implementers should use a threadpool where blocking is allowed, such as BlockingTaskPool.

fn replay_transactions_until<'a, DB, I>( &self, db: &mut DB, evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, transactions: I, target_tx_hash: FixedBytes<32>, ) -> Result<usize, Self::Error>

where DB: Database<Error = ProviderError> + DatabaseCommit, I: IntoIterator<Item = Recovered<&'a <Self::Provider as TransactionsProvider>::Transaction>>,

Replays all the transactions until the target transaction is found.

All transactions before the target transaction are executed and their changes are written to the runtime db ([CacheDB]).

Note: This assumes the target transaction is in the given iterator. Returns the index of the target transaction in the given iterator.

fn prepare_call_env<DB>( &self, evm_env: EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, request: TransactionRequest, db: &mut CacheDB<DB>, overrides: EvmOverrides, ) -> Result<(EvmEnv<<<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Spec>, <<<Self::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory as EvmFactory>::Tx), Self::Error>

where DB: DatabaseRef, EthApiError: From<<DB as DatabaseRef>::Error>,

Prepares the EvmEnv for execution of calls.

Does not commit any changes to the underlying database.

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

In addition, this changes the block’s gas limit to the configured Self::call_gas_limit.

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> Call for EthApi<Provider, Pool, Network, EvmConfig>

where EthApi<Provider, Pool, Network, EvmConfig>: LoadState + SpawnBlocking, <EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Evm: ConfigureEvm, <<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Evm as ConfigureEvm>::BlockExecutorFactory: BlockExecutorFactory, <<<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Evm as ConfigureEvm>::BlockExecutorFactory as BlockExecutorFactory>::EvmFactory: EvmFactory<Tx = TxEnv>, <<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Evm as ConfigureEvm>::Primitives: NodePrimitives<BlockHeader = <<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Provider as HeaderProvider>::Header, SignedTx = <<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Provider as TransactionsProvider>::Transaction>, <EthApi<Provider, Pool, Network, EvmConfig> as EthApiTypes>::Error: FromEvmError<<EthApi<Provider, Pool, Network, EvmConfig> as RpcNodeCore>::Evm>, Provider: BlockReader,

impl<N> Call for OpEthApi<N>

where Self: LoadState<Evm: ConfigureEvm<Primitives: NodePrimitives<BlockHeader = ProviderHeader<Self::Provider>, SignedTx = ProviderTx<Self::Provider>>, BlockExecutorFactory: BlockExecutorFactory<EvmFactory: EvmFactory<Tx = OpTransaction<TxEnv>>>>, Error: FromEvmError<Self::Evm>> + SpawnBlocking, Self::Error: From<OpEthApiError>, N: OpNodeCore,