Struct InMemoryFlowTaskQueue 

pub struct InMemoryFlowTaskQueue { /* private fields */ }

In-process FIFO queue for tests, embedded hosts, and local workers.

Implementations

impl InMemoryFlowTaskQueue

pub fn new() -> Self

Creates an empty in-process queue.

pub async fn inflight_len(&self) -> Result<usize>

Returns the number of currently leased tasks.

Trait Implementations

impl Debug for InMemoryFlowTaskQueue

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for InMemoryFlowTaskQueue

fn default() -> InMemoryFlowTaskQueue

Returns the “default value” for a type.

impl FlowTaskQueue for InMemoryFlowTaskQueue

fn enqueue<'life0, 'async_trait>( &'life0 self, task: FlowTask, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Appends one task to pending dispatch.

fn lease<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<FlowTaskLease>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Leases the next pending task without acknowledging it.

fn heartbeat<'life0, 'life1, 'async_trait>( &'life0 self, lease_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<String>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Refreshes an active lease and returns its replacement fencing token.

fn ack<'life0, 'life1, 'async_trait>( &'life0 self, lease_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Acknowledges the active lease identified by its latest fencing token.

fn requeue_inflight<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Returns inflight tasks to pending dispatch and reports the count.

fn len<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Returns the number of tasks pending dispatch.

fn dequeue<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<FlowTask>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Leases and immediately acknowledges the next pending task.

fn is_empty<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Returns whether no tasks are pending dispatch.