Trait sc_client_api::client::BlockchainEvents [−][src]
pub trait BlockchainEvents<Block: BlockT> { fn import_notification_stream(&self) -> ImportNotifications<Block>; fn finality_notification_stream(&self) -> FinalityNotifications<Block>; fn storage_changes_notification_stream(
&self,
filter_keys: Option<&[StorageKey]>,
child_filter_keys: Option<&[(StorageKey, Option<Vec<StorageKey>>)]>
) -> Result<StorageEventStream<Block::Hash>>; }
Expand description
A source of blockchain events.
Required methods
fn import_notification_stream(&self) -> ImportNotifications<Block>
fn import_notification_stream(&self) -> ImportNotifications<Block>
Get block import event stream. Not guaranteed to be fired for every imported block.
fn finality_notification_stream(&self) -> FinalityNotifications<Block>
fn finality_notification_stream(&self) -> FinalityNotifications<Block>
Get a stream of finality notifications. Not guaranteed to be fired for every finalized block.
fn storage_changes_notification_stream(
&self,
filter_keys: Option<&[StorageKey]>,
child_filter_keys: Option<&[(StorageKey, Option<Vec<StorageKey>>)]>
) -> Result<StorageEventStream<Block::Hash>>
fn storage_changes_notification_stream(
&self,
filter_keys: Option<&[StorageKey]>,
child_filter_keys: Option<&[(StorageKey, Option<Vec<StorageKey>>)]>
) -> Result<StorageEventStream<Block::Hash>>
Get storage changes event stream.
Passing None
as filter_keys
subscribes to all storage changes.