[−][src]Trait sc_client_api::backend::BlockImportOperation

pub trait BlockImportOperation<Block: BlockT> {
    type State: StateBackend<HashFor<Block>>;
    fn state(&self) -> Result<Option<&Self::State>>;

    fn set_block_data(
        &mut self, 
        header: Block::Header, 
        body: Option<Vec<Block::Extrinsic>>, 
        justification: Option<Justification>, 
        state: NewBlockState
    ) -> Result<()>;

    fn update_cache(&mut self, cache: HashMap<Id, Vec<u8>>);

    fn update_db_storage(
        &mut self, 
        update: TransactionForSB<Self::State, Block>
    ) -> Result<()>;

    fn reset_storage(&mut self, storage: Storage) -> Result<Block::Hash>;

    fn update_storage(
        &mut self, 
        update: StorageCollection, 
        child_update: ChildStorageCollection
    ) -> Result<()>;

    fn update_changes_trie(
        &mut self, 
        update: ChangesTrieTransaction<HashFor<Block>, NumberFor<Block>>
    ) -> Result<()>;

    fn insert_aux<I>(&mut self, ops: I) -> Result<()>
    where
        I: IntoIterator<Item = (Vec<u8>, Option<Vec<u8>>)>;

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

    fn mark_head(&mut self, id: BlockId<Block>) -> Result<()>;

    fn update_offchain_storage(
        &mut self, 
        _offchain_update: OffchainOverlayedChanges
    ) -> Result<()> { ... }
}

Block insertion operation.

Keeps hold if the inserted block state and data.

Associated Types

type State: StateBackend<HashFor<Block>>

Associated state backend type.

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Required methods

fn state(&self) -> Result<Option<&Self::State>>

Returns pending state.

Returns None for backends with locally-unavailable state data.

fn set_block_data(
    &mut self,
    header: Block::Header,
    body: Option<Vec<Block::Extrinsic>>,
    justification: Option<Justification>,
    state: NewBlockState
) -> Result<()>

Append block data to the transaction.

fn update_cache(&mut self, cache: HashMap<Id, Vec<u8>>)

Update cached data.

fn update_db_storage(
    &mut self,
    update: TransactionForSB<Self::State, Block>
) -> Result<()>

Inject storage data into the database.

fn reset_storage(&mut self, storage: Storage) -> Result<Block::Hash>

Inject storage data into the database replacing any existing data.

fn update_storage(
    &mut self,
    update: StorageCollection,
    child_update: ChildStorageCollection
) -> Result<()>

Set storage changes.

fn update_changes_trie(
    &mut self,
    update: ChangesTrieTransaction<HashFor<Block>, NumberFor<Block>>
) -> Result<()>

Inject changes trie data into the database.

fn insert_aux<I>(&mut self, ops: I) -> Result<()> where
    I: IntoIterator<Item = (Vec<u8>, Option<Vec<u8>>)>, 

Insert auxiliary keys.

Values are None if should be deleted.

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

Mark a block as finalized.

fn mark_head(&mut self, id: BlockId<Block>) -> Result<()>

Mark a block as new head. If both block import and set head are specified, set head overrides block import's best block rule.

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Provided methods

fn update_offchain_storage(
    &mut self,
    _offchain_update: OffchainOverlayedChanges
) -> Result<()>

Write offchain storage changes to the database.

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Implementors

impl<Block: BlockT> BlockImportOperation<Block> for BlockImportOperation<Block> where
    Block::Hash: Ord, [src]

type State = InMemoryBackend<HashFor<Block>>

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