Function holochain::core::queue_consumer::spawn_queue_consumer_tasks

source · 
pub async fn spawn_queue_consumer_tasks(
    cell_id: CellId,
    network: HolochainP2pDna,
    space: &Space,
    conductor_handle: ConductorHandle,
    task_sender: Sender<ManagedTaskAdd>,
    stop: Sender<()>
) -> (QueueTriggers, InitialQueueTriggers)
Expand description

Spawns several long-running tasks which are responsible for processing work which shows up on various databases.

Waits for the initial loop to complete before returning, to prevent causing a race condition by trying to run a workflow too soon after cell creation.

Examples found in repository?
src/conductor/cell.rs (lines 135-142)
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    pub async fn create(
        id: CellId,
        conductor_handle: ConductorHandle,
        space: Space,
        holochain_p2p_cell: holochain_p2p::HolochainP2pDna,
        managed_task_add_sender: sync::mpsc::Sender<ManagedTaskAdd>,
        managed_task_stop_broadcaster: sync::broadcast::Sender<()>,
    ) -> CellResult<(Self, InitialQueueTriggers)> {
        let conductor_api = Arc::new(CellConductorApi::new(conductor_handle.clone(), id.clone()));

        // check if genesis has been run
        let has_genesis = {
            // check if genesis ran.
            GenesisWorkspace::new(space.authored_db.clone(), space.dht_db.clone())?
                .has_genesis(id.agent_pubkey().clone())
                .await?
        };

        if has_genesis {
            let (queue_triggers, initial_queue_triggers) = spawn_queue_consumer_tasks(
                id.clone(),
                holochain_p2p_cell.clone(),
                &space,
                conductor_handle.clone(),
                managed_task_add_sender,
                managed_task_stop_broadcaster,
            )
            .await;

            Ok((
                Self {
                    id,
                    conductor_api,
                    conductor_handle,
                    space,
                    holochain_p2p_cell,
                    queue_triggers,
                    init_mutex: Default::default(),
                },
                initial_queue_triggers,
            ))
        } else {
            Err(CellError::CellWithoutGenesis(id))
        }
    }