Struct Manager

pub struct Manager { /* private fields */ }

Task Queue manager.

Implementations

impl Manager

pub async fn new( queue: Queue, config: ManagerConfig, ) -> Result<Self, ConfigError>

Creates new manager from configuration.

pub fn queue(&self) -> &Queue

Access underlying queue

pub fn config(&self) -> &ManagerConfig

Access manager’s configuration

pub fn max_pending_retry_count(&self) -> u64

Returns number of re-tries current configuration should allow.

Generally it is just min(self.config.max_pending_time / self.config.poll_time, 1)

pub fn pending_tasks( &self, count: usize, last_id: Option<StreamId>, ) -> PendingIter<'_>

Creates iterator of pending entries in queue.

last_id can be used to specify from where to continue for iteration purpose.

pub fn expired_pending_tasks( &self, count: usize, last_id: Option<StreamId>, ) -> PendingIter<'_>

Creates iterator of expired entries in queue

last_id can be used to specify from where to continue for iteration purpose.

pub fn fetch_new_tasks(&self, count: usize) -> FetchIter<'_>

Creates iterator over new tasks within queue

pub async fn get_pending_by_id<T: FromRedisValue>( &self, id: StreamId, ) -> Result<Option<Entry<T>>, RedisError>

Retrieves task entry by id

Implementation

Due to Redis not providing any method to get message by id, we have to emulate it by doing query for message after id - 1 to fetch message by id.

If message is no longer exist, we return None.

Note that when reading pending message data, there is no timeout possible If there is no message, it will return None

pub async fn consume_tasks( &self, tasks: &[StreamId], ) -> Result<usize, RedisError>

Consumes tasks by specified IDs.

If error is returned, tasks modified with cleaned IDs removed.

Trait Implementations

impl Clone for Manager

fn clone(&self) -> Manager

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.