RedisArqQueue

class safir.arq.RedisArqQueue(pool, *, default_queue_name='arq:queue')

Bases: ArqQueue

A distributed queue, based on arq and Redis.

Parameters:

• pool (ArqRedis) –

• default_queue_name (str, default: 'arq:queue') –

Methods Summary

enqueue(task_name, *task_args[, _queue_name])	Add a job to the queue.
get_job_metadata(job_id[, queue_name])	Get metadata about a Job.
get_job_result(job_id[, queue_name])	The job result, if available.
initialize(redis_settings, *[, ...])	Initialize a RedisArqQueue from Redis settings.

Methods Documentation

async enqueue(task_name, *task_args, _queue_name=None, **task_kwargs)

Add a job to the queue.

Parameters:

• task_name (str) – The function name to run.

• *args – Positional arguments for the task function.

• _queue_name (str) – Name of the queue.

• **kwargs – Keyword arguments passed to the task function.

• task_args (Any) –

• task_kwargs (Any) –

Returns:

Metadata about the queued job.

Return type:

JobMetadata

Raises:

JobNotQueued – Raised if the job is not successfully added to the queue.

async get_job_metadata(job_id, queue_name=None)

Get metadata about a Job.

Parameters:

• job_id (str) – The job’s identifier. This is the same as the JobMetadata.id attribute, provided when initially adding a job to the queue.

• queue_name (str, optional) – Name of the queue.

Returns:

Metadata about the queued job.

Return type:

JobMetadata

Raises:

JobNotFound – Raised if the job is not found in the queue.

async get_job_result(job_id, queue_name=None)

The job result, if available.

Parameters:

• job_id (str) – The job’s identifier. This is the same as the JobMetadata.id attribute, provided when initially adding a job to the queue.

• queue_name (str, optional) – Name of the queue.

Returns:

The job’s result, along with metadata about the queued job.

Return type:

JobResult

Raises:

• JobNotFound – Raised if the job is not found in the queue.

• JobResultUnavailable – Raised if the job’s result is unavailable for any reason.

async classmethod initialize(redis_settings, *, default_queue_name='arq:queue')

Initialize a RedisArqQueue from Redis settings.

Parameters:

• redis_settings (RedisSettings) –

• default_queue_name (str, default: 'arq:queue') –

Return type:

RedisArqQueue