Trait ethcore_blockchain::BlockProvider

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pub trait BlockProvider {
Show 22 methods
    fn is_known(&self, hash: &H256) -> bool;
    fn first_block(&self) -> Option<H256>;
    fn best_ancient_block(&self) -> Option<H256>;
    fn block(&self, hash: &H256) -> Option<Block>;
    fn block_details(&self, hash: &H256) -> Option<BlockDetails>;
    fn block_hash(&self, index: BlockNumber) -> Option<H256>;
    fn transaction_address(&self, hash: &H256) -> Option<TransactionAddress>;
    fn block_receipts(&self, hash: &H256) -> Option<BlockReceipts>;
    fn block_header_data(&self, hash: &H256) -> Option<Header>;
    fn block_body(&self, hash: &H256) -> Option<Body>;
    fn blocks_with_bloom<'a, B, I, II>(
        &self, 
        blooms: II, 
        from_block: BlockNumber, 
        to_block: BlockNumber
    ) -> Vec<BlockNumber>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
    A: Allocator, 
    where
        BloomRef<'a>: From<B>,
        II: IntoIterator<Item = B, IntoIter = I> + Copy,
        I: Iterator<Item = B>,
        Self: Sized;
    fn logs<F>(
        &self, 
        blocks: Vec<H256>, 
        matches: F, 
        limit: Option<usize>
    ) -> Vec<LocalizedLogEntry>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
    A: Allocator, 
    where
        F: Fn(&LogEntry) -> bool + Send + Sync,
        Self: Sized;

    fn is_canon(&self, hash: &H256) -> bool { ... }
    fn first_block_number(&self) -> Option<BlockNumber> { ... }
    fn best_ancient_number(&self) -> Option<BlockNumber> { ... }
    fn uncles(
        &self, 
        hash: &H256, 
        eip1559_transition: BlockNumber
    ) -> Option<Vec<Header>> { ... }
    fn uncle_hashes(&self, hash: &H256) -> Option<Vec<H256>> { ... }
    fn block_number(&self, hash: &H256) -> Option<BlockNumber> { ... }
    fn transaction(
        &self, 
        address: &TransactionAddress
    ) -> Option<LocalizedTransaction> { ... }
    fn transactions(&self, hash: &H256) -> Option<Vec<LocalizedTransaction>> { ... }
    fn genesis_hash(&self) -> H256 { ... }
    fn genesis_header(&self) -> Header { ... }
}

Expand description

Interface for querying blocks by hash and by number.

Required methods

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fn is_known(&self, hash: &H256) -> bool

Returns true if the given block is known (though not necessarily a part of the canon chain).

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fn first_block(&self) -> Option<H256>

Get the first block of the best part of the chain. Return None if there is no gap and the first block is the genesis. Any queries of blocks which precede this one are not guaranteed to succeed.

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