Trait sc_client_api::client::BlockBackend[−][src]

pub trait BlockBackend<Block: BlockT> {
    fn block_body(
        &self, 
        id: &BlockId<Block>
    ) -> Result<Option<Vec<<Block as BlockT>::Extrinsic>>>;

    fn block(&self, id: &BlockId<Block>) -> Result<Option<SignedBlock<Block>>>;

    fn block_status(&self, id: &BlockId<Block>) -> Result<BlockStatus>;

    fn justification(
        &self, 
        id: &BlockId<Block>
    ) -> Result<Option<Justification>>;

    fn block_hash(
        &self, 
        number: NumberFor<Block>
    ) -> Result<Option<Block::Hash>>;

    fn extrinsic(
        &self, 
        hash: &Block::Hash
    ) -> Result<Option<<Block as BlockT>::Extrinsic>>;

    fn have_extrinsic(&self, hash: &Block::Hash) -> Result<bool> { ... }
}

Interface for fetching block data.

Required methods

fn block_body(
    &self,
    id: &BlockId<Block>
) -> Result<Option<Vec<<Block as BlockT>::Extrinsic>>>[src]

Get block body by ID. Returns None if the body is not stored.

fn block(&self, id: &BlockId<Block>) -> Result<Option<SignedBlock<Block>>>[src]

Get full block by id.

fn block_status(&self, id: &BlockId<Block>) -> Result<BlockStatus>[src]

Get block status.

fn justification(&self, id: &BlockId<Block>) -> Result<Option<Justification>>[src]

Get block justification set by id.

fn block_hash(&self, number: NumberFor<Block>) -> Result<Option<Block::Hash>>[src]

Get block hash by number.

fn extrinsic(
    &self,
    hash: &Block::Hash
) -> Result<Option<<Block as BlockT>::Extrinsic>>[src]

Get single extrinsic by hash.

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Provided methods

fn have_extrinsic(&self, hash: &Block::Hash) -> Result<bool>[src]

Check if extrinsic exists.

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Implementors

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