Trait BlockHashReader 

pub trait BlockHashReader {
    // Required methods
    fn block_hash(&self, number: BlockNumber) -> ProviderResult<Option<B256>>;
    fn canonical_hashes_range(
        &self,
        start: BlockNumber,
        end: BlockNumber,
    ) -> ProviderResult<Vec<B256>>;

    // Provided method
    fn convert_block_hash(
        &self,
        hash_or_number: BlockHashOrNumber,
    ) -> ProviderResult<Option<B256>> { ... }
}

Client trait for fetching block hashes by number.

Required Methods

fn block_hash(&self, number: BlockNumber) -> ProviderResult<Option<B256>>

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: BlockNumber, end: BlockNumber, ) -> ProviderResult<Vec<B256>>

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: BlockHashOrNumber, ) -> ProviderResult<Option<B256>>

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, T: 'a + BlockHashReader + ?Sized> BlockHashReader for &'a T

fn block_hash(&self, number: BlockNumber) -> ProviderResult<Option<B256>>

fn convert_block_hash( &self, hash_or_number: BlockHashOrNumber, ) -> ProviderResult<Option<B256>>

fn canonical_hashes_range( &self, start: BlockNumber, end: BlockNumber, ) -> ProviderResult<Vec<B256>>

impl<T: BlockHashReader + ?Sized> BlockHashReader for Arc<T>

fn block_hash(&self, number: BlockNumber) -> ProviderResult<Option<B256>>

fn convert_block_hash( &self, hash_or_number: BlockHashOrNumber, ) -> ProviderResult<Option<B256>>

fn canonical_hashes_range( &self, start: BlockNumber, end: BlockNumber, ) -> ProviderResult<Vec<B256>>

impl<T: BlockHashReader + ?Sized> BlockHashReader for Box<T>

fn block_hash(&self, number: BlockNumber) -> ProviderResult<Option<B256>>

fn convert_block_hash( &self, hash_or_number: BlockHashOrNumber, ) -> ProviderResult<Option<B256>>

fn canonical_hashes_range( &self, start: BlockNumber, end: BlockNumber, ) -> ProviderResult<Vec<B256>>

Implementors

impl<ChainSpec: Send + Sync, N: Send + Sync> BlockHashReader for NoopProvider<ChainSpec, N>

Noop implementation for testing purposes