Trait BlockHashReader 

pub trait BlockHashReader {
    // Required methods
    fn block_hash(
        &self,
        number: u64,
    ) -> Result<Option<FixedBytes<32>>, ProviderError>;
    fn canonical_hashes_range(
        &self,
        start: u64,
        end: u64,
    ) -> Result<Vec<FixedBytes<32>>, ProviderError>;

    // Provided method
    fn convert_block_hash(
        &self,
        hash_or_number: HashOrNumber,
    ) -> Result<Option<FixedBytes<32>>, ProviderError> { ... }
}

Client trait for fetching block hashes by number.

Required Methods

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

Get the hash of the block with the given number. Returns None if no block with this number exists.

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

Get headers in range of block hashes or numbers

Returns the available hashes of that range.

Note: The range is start..end, so the expected result is [start..end)

Provided Methods

fn convert_block_hash( &self, hash_or_number: HashOrNumber, ) -> Result<Option<FixedBytes<32>>, ProviderError>

Get the hash of the block with the given number. Returns None if no block with this number exists.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl<'a, N> BlockHashReader for MemoryOverlayStateProvider<N>

where N: NodePrimitives,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

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

where T: 'a + BlockHashReader + ?Sized,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn convert_block_hash( &self, hash_or_number: HashOrNumber, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

impl<N> BlockHashReader for MemoryOverlayStateProviderRef<'_, N>

where N: NodePrimitives,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

impl<S> BlockHashReader for CachedStateProvider<S>

where S: BlockHashReader,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

impl<S> BlockHashReader for InstrumentedStateProvider<S>

where S: BlockHashReader,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

impl<T> BlockHashReader for Arc<T>

where T: BlockHashReader + ?Sized,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn convert_block_hash( &self, hash_or_number: HashOrNumber, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

impl<T> BlockHashReader for Box<T>

where T: BlockHashReader + ?Sized,

fn block_hash( &self, number: u64, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn convert_block_hash( &self, hash_or_number: HashOrNumber, ) -> Result<Option<FixedBytes<32>>, ProviderError>

fn canonical_hashes_range( &self, start: u64, end: u64, ) -> Result<Vec<FixedBytes<32>>, ProviderError>

Implementors

impl BlockHashReader for StateProviderTest

impl BlockHashReader for StateProviderTraitObjWrapper

impl<'a, Provider> BlockHashReader for HistoricalStateProvider<Provider>

where Provider: DBProvider + BlockNumReader + BlockHashReader + ChangeSetReader + StorageChangeSetReader + PruneCheckpointReader + StageCheckpointReader + StorageSettingsCache + RocksDBProviderFactory + NodePrimitivesProvider,

impl<'a, Provider> BlockHashReader for LatestStateProvider<Provider>

where Provider: DBProvider + BlockHashReader + StorageSettingsCache,

impl<ChainSpec, N> BlockHashReader for NoopProvider<ChainSpec, N>

where ChainSpec: Send + Sync, N: Send + Sync,

Noop implementation for testing purposes

impl<N> BlockHashReader for BlockchainProvider<N>

where N: ProviderNodeTypes,

impl<N> BlockHashReader for ProviderFactory<N>

where N: ProviderNodeTypes,

impl<N> BlockHashReader for StaticFileJarProvider<'_, N>

where N: NodePrimitives,

impl<N> BlockHashReader for StaticFileProvider<N>

where N: NodePrimitives,

impl<Provider, N> BlockHashReader for HistoricalStateProviderRef<'_, Provider, N>

where Provider: DBProvider + BlockNumReader + BlockHashReader + NodePrimitivesProvider<Primitives = N>, N: NodePrimitives,

impl<Provider> BlockHashReader for LatestStateProviderRef<'_, Provider>

where Provider: BlockHashReader,

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

where T: NodePrimitives, ChainSpec: Send + Sync + 'static,

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

where TX: DbTx + 'static, N: NodeTypes,