cat_gateway::cardano

Struct SyncTask

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struct SyncTask {
    cfg: EnvVars,
    sync_tasks: FuturesUnordered<JoinHandle<SyncParams>>,
    current_sync_tasks: u16,
    start_slot: Slot,
    immutable_tip_slot: Slot,
    live_tip_slot: Slot,
    sync_status: Vec<SyncStatus>,
    event_channel: (Sender<ChainIndexerEvent>, Receiver<ChainIndexerEvent>),
}
Expand description

The synchronisation task, and its state. There should ONLY ever be one of these at any time.

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§cfg: EnvVars

Chain follower configuration.

§sync_tasks: FuturesUnordered<JoinHandle<SyncParams>>

The current running sync tasks.

§current_sync_tasks: u16

How many immutable chain follower sync tasks we are running.

§start_slot: Slot

Start for the next block we would sync.

§immutable_tip_slot: Slot

The immutable tip slot.

§live_tip_slot: Slot

The live tip slot.

§sync_status: Vec<SyncStatus>

Current Sync Status.

§event_channel: (Sender<ChainIndexerEvent>, Receiver<ChainIndexerEvent>)

Event sender during the process of sync tasks.

Implementations§

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impl SyncTask

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fn new(cfg: EnvVars) -> SyncTask

Create a new SyncTask.

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fn add_sync_task( &mut self, params: SyncParams, event_sender: Sender<ChainIndexerEvent>, )

Add a new SyncTask to the queue.

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fn sync_task_finished(&mut self)

Update SyncTask count.

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async fn run(&mut self)

Primary Chain Follower task.

This continuously runs in the background, and never terminates.

Sets the Index DB liveness flag to true if it is not already set.

Sets the Chain Follower Has First Reached Tip flag to true if it is not already set.

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fn start_immutable_followers(&mut self)

Start immutable followers, if we can

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fn get_syncable_range(&self, start: Slot, end: Slot) -> Option<(Point, Point)>

Check if the requested range has already been indexed. If it hasn’t just return the slots as points. If it has, return a subset that hasn’t been indexed if any, or None if its been completely indexed already.

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impl EventTarget<ChainIndexerEvent> for SyncTask

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fn add_event_listener( &mut self, listener: Box<dyn Fn(&ChainIndexerEvent) + Send + Sync + 'static>, )

Adds an event listener to the target. Read more
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fn dispatch_event(&self, message: ChainIndexerEvent)

Dispatches an event to all registered listeners. Read more

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