Trait StateReader 

pub trait StateReader: Send {
    type Receipt: Send + Sync;

    // Required method
    fn get_state(
        &self,
        block: u64,
    ) -> Result<Option<ExecutionOutcome<Self::Receipt>>, ProviderError>;
}

Available on crate feature storage-api only.

This just receives state, or ExecutionOutcome, from the provider

Required Associated Types

type Receipt: Send + Sync

Receipt type in ExecutionOutcome.

Required Methods

fn get_state( &self, block: u64, ) -> Result<Option<ExecutionOutcome<Self::Receipt>>, ProviderError>

Get the ExecutionOutcome for the given block

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'a, T> StateReader for &'a T

where T: 'a + StateReader + ?Sized, &'a T: Send,

type Receipt = <T as StateReader>::Receipt

fn get_state( &self, block: u64, ) -> Result<Option<ExecutionOutcome<<&'a T as StateReader>::Receipt>>, ProviderError>

impl<T> StateReader for Arc<T>

where T: StateReader + ?Sized, Arc<T>: Send,

type Receipt = <T as StateReader>::Receipt

fn get_state( &self, block: u64, ) -> Result<Option<ExecutionOutcome<<Arc<T> as StateReader>::Receipt>>, ProviderError>

impl<T> StateReader for Box<T>

where T: StateReader + ?Sized, Box<T>: Send,

type Receipt = <T as StateReader>::Receipt

fn get_state( &self, block: u64, ) -> Result<Option<ExecutionOutcome<<Box<T> as StateReader>::Receipt>>, ProviderError>

Implementors

impl<C, N> StateReader for NoopProvider<C, N>

where C: Send + Sync, N: NodePrimitives,

type Receipt = <N as NodePrimitives>::Receipt

impl<N> StateReader for BlockchainProvider<N>

where N: ProviderNodeTypes,

type Receipt = <<N as NodeTypes>::Primitives as NodePrimitives>::Receipt

impl<T, ChainSpec> StateReader for MockEthProvider<T, ChainSpec>

where T: NodePrimitives, ChainSpec: Send + Sync,

type Receipt = <T as NodePrimitives>::Receipt

impl<Tx, N> StateReader for DatabaseProvider<Tx, N>

where Tx: DbTx + 'static, N: NodeTypesForProvider,

type Receipt = <<N as NodeTypes>::Primitives as NodePrimitives>::Receipt