Trait StorageChangeSetReader 

pub trait StorageChangeSetReader: Send {
    // Required methods
    fn storage_changeset(
        &self,
        block_number: u64,
    ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>;
    fn get_storage_before_block(
        &self,
        block_number: u64,
        address: Address,
        storage_key: FixedBytes<32>,
    ) -> Result<Option<ChangesetEntry>, ProviderError>;
    fn storage_changesets_range(
        &self,
        range: impl RangeBounds<u64>,
    ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>;
    fn storage_changeset_count(&self) -> Result<usize, ProviderError>;

    // Provided method
    fn storage_block_changeset(
        &self,
        block_number: u64,
    ) -> Result<Vec<StorageBeforeTx>, ProviderError> { ... }
}

Storage ChangeSet reader

Required Methods

fn storage_changeset( &self, block_number: u64, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

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

Returned entries have their keys tagged as StorageSlotKey::Plain or StorageSlotKey::Hashed based on the current storage mode.

fn get_storage_before_block( &self, block_number: u64, address: Address, storage_key: FixedBytes<32>, ) -> Result<Option<ChangesetEntry>, ProviderError>

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

The storage_key must match the key format used by the storage mode (plain in v1, keccak256-hashed in v2).

Returns None if the storage slot was not changed in this block.

fn storage_changesets_range( &self, range: impl RangeBounds<u64>, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

Get all storage changesets in a range of blocks.

Returned entries have their keys tagged as StorageSlotKey::Plain or StorageSlotKey::Hashed based on the current storage mode.

fn storage_changeset_count(&self) -> Result<usize, ProviderError>

Get the total count of all storage changes.

Provided Methods

fn storage_block_changeset( &self, block_number: u64, ) -> Result<Vec<StorageBeforeTx>, ProviderError>

Get storage changesets for a block as static-file rows.

Default implementation uses storage_changeset and maps to StorageBeforeTx.

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.

Implementations on Foreign Types

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

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

fn storage_changeset( &self, block_number: u64, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

fn get_storage_before_block( &self, block_number: u64, address: Address, storage_key: FixedBytes<32>, ) -> Result<Option<ChangesetEntry>, ProviderError>

fn storage_changesets_range( &self, range: impl RangeBounds<u64>, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

fn storage_changeset_count(&self) -> Result<usize, ProviderError>

fn storage_block_changeset( &self, block_number: u64, ) -> Result<Vec<StorageBeforeTx>, ProviderError>

impl<T> StorageChangeSetReader for Box<T>

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

fn storage_changeset( &self, block_number: u64, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

fn get_storage_before_block( &self, block_number: u64, address: Address, storage_key: FixedBytes<32>, ) -> Result<Option<ChangesetEntry>, ProviderError>

fn storage_changesets_range( &self, range: impl RangeBounds<u64>, ) -> Result<Vec<(BlockNumberAddress, ChangesetEntry)>, ProviderError>

fn storage_changeset_count(&self) -> Result<usize, ProviderError>

fn storage_block_changeset( &self, block_number: u64, ) -> Result<Vec<StorageBeforeTx>, ProviderError>

Implementors

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

where C: Send + Sync, N: NodePrimitives,

Available on crate feature db-api only.

impl<N: NodePrimitives> StorageChangeSetReader for StaticFileProvider<N>

impl<N: ProviderNodeTypes> StorageChangeSetReader for BlockchainProvider<N>

impl<T: NodePrimitives, ChainSpec: Send + Sync> StorageChangeSetReader for MockEthProvider<T, ChainSpec>

Available on crate features test-utils only.

impl<TX: DbTx, N: NodeTypes> StorageChangeSetReader for DatabaseProvider<TX, N>