Trait ChangeSetReader 

pub trait ChangeSetReader {
    // Required methods
    fn account_block_changeset(
        &self,
        block_number: u64,
    ) -> Result<Vec<AccountBeforeTx>, ProviderError>;
    fn get_account_before_block(
        &self,
        block_number: u64,
        address: Address,
    ) -> Result<Option<AccountBeforeTx>, ProviderError>;
}

Available on crate feature storage-api only.

AccountChange reader

Required Methods

fn account_block_changeset( &self, block_number: u64, ) -> Result<Vec<AccountBeforeTx>, ProviderError>

Iterate over account changesets and return the account state from before this block.

fn get_account_before_block( &self, block_number: u64, address: Address, ) -> Result<Option<AccountBeforeTx>, ProviderError>

Search the block’s changesets for the given address, and return the result.

Returns None if the account was not changed in this block.

Implementations on Foreign Types

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

where T: 'a + ChangeSetReader + ?Sized,

fn account_block_changeset( &self, block_number: u64, ) -> Result<Vec<AccountBeforeTx>, ProviderError>

fn get_account_before_block( &self, block_number: u64, address: Address, ) -> Result<Option<AccountBeforeTx>, ProviderError>

impl<T> ChangeSetReader for Box<T>

where T: ChangeSetReader + ?Sized,

fn account_block_changeset( &self, block_number: u64, ) -> Result<Vec<AccountBeforeTx>, ProviderError>

fn get_account_before_block( &self, block_number: u64, address: Address, ) -> Result<Option<AccountBeforeTx>, ProviderError>

impl<T> ChangeSetReader for Arc<T>

where T: ChangeSetReader + ?Sized,

fn account_block_changeset( &self, block_number: u64, ) -> Result<Vec<AccountBeforeTx>, ProviderError>

fn get_account_before_block( &self, block_number: u64, address: Address, ) -> Result<Option<AccountBeforeTx>, ProviderError>

Implementors

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

where C: Send + Sync, N: NodePrimitives,

impl<N> ChangeSetReader for BlockchainProvider<N>

where N: ProviderNodeTypes,

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

where T: NodePrimitives, ChainSpec: Send + Sync,

impl<TX, N> ChangeSetReader for DatabaseProvider<TX, N>

where TX: DbTx, N: NodeTypes,