PollingJobQueueStrategy

@vendure/core Source

This class allows easier implementation of JobQueueStrategy in a polling style. Instead of providing JobQueueStrategy start() you should provide a next method.

This class should be extended by any strategy which does not support a push-based system to notify on new jobs. It is used by the SqlJobQueueStrategy and InMemoryJobQueueStrategy.

Signature

class PollingJobQueueStrategy extends InjectableJobQueueStrategy {    public concurrency: number | ((queueName: string) => number);    public pollInterval: number | ((queueName: string) => number);    public setRetries: (queueName: string, job: Job) => number;    public backOffStrategy?: BackoffStrategy;    public gracefulShutdownTimeout: number;    protected activeQueues = new QueueNameProcessStorage<ActiveQueue<any>>();    constructor(config?: PollingJobQueueStrategyConfig)    constructor(concurrency?: number, pollInterval?: number)    constructor(concurrencyOrConfig?: number | PollingJobQueueStrategyConfig, maybePollInterval?: number)    start(queueName: string, process: (job: Job<Data>) => Promise<any>) => ;    stop(queueName: string, process: (job: Job<Data>) => Promise<any>) => ;    cancelJob(jobId: ID) => Promise<Job | undefined>;    next(queueName: string) => Promise<Job | undefined>;    update(job: Job) => Promise<void>;    findOne(id: ID) => Promise<Job | undefined>;}

Extends: InjectableJobQueueStrategy

concurrency

propertynumber | ((queueName: string) => number)

pollInterval

propertynumber | ((queueName: string) => number)

setRetries

property(queueName: string, job: Job) => number

backOffStrategy

propertyBackoffStrategy

gracefulShutdownTimeout

propertynumber

activeQueues

property

start

method(queueName: string, process: (job: Job<Data>) => Promise<any>) =>

stop

method(queueName: string, process: (job: Job<Data>) => Promise<any>) =>

cancelJob

method(jobId: ID) => Promise<Job | undefined>

method(queueName: string) => Promise<Job | undefined>

Should return the next job in the given queue. The implementation is responsible for returning the correct job according to the time of creation.

update

method(job: Job) => Promise<void>

Update the job details in the store.

findOne

method(id: ID) => Promise<Job | undefined>

Returns a job by its id.