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EventBusService

Can keep track of multiple subscribers to different events and run the subscribers when events happen. Events will run asynchronously.

constructor

Parameters

__namedParametersInjectedDependenciesRequired
configConfigModuleRequired
isSingletonbooleanRequired

Default: true


Properties

manager_EntityManagerRequired
transactionManager_undefined | EntityManagerRequired
__container__anyRequired
config_ConfigModuleRequired
stagedJobService_StagedJobServiceRequired
logger_LoggerRequired
shouldEnqueuerRunbooleanRequired
enqueue_Promise<void>Required
__configModule__Record<string, unknown>
__moduleDeclaration__Record<string, unknown>

Accessors

activeManager_

Returns

EntityManagerEntityManagerRequired

eventBusModuleService_

Returns

IEventBusModuleServiceobjectRequired

Methods

shouldRetryTransaction_

Parameters

errRecord<string, unknown> | objectRequired

Returns

booleanbooleanRequired

atomicPhase_

Wraps some work within a transactional block. If the service already has a transaction manager attached this will be reused, otherwise a new transaction manager is created.

Type Parameters

TResultobjectRequired
TErrorobjectRequired

Parameters

work(transactionManager: EntityManager) => Promise<TResult>Required
the transactional work to be done
isolationOrErrorHandlerIsolationLevel | (error: TError) => Promise<void | TResult>
the isolation level to be used for the work.
maybeErrorHandlerOrDontFail(error: TError) => Promise<void | TResult>
Potential error handler

Returns

PromisePromise<TResult>Required
the result of the transactional work

withTransaction

Parameters

transactionManagerEntityManager

Returns

thisthisRequired

subscribe

Adds a function to a list of event subscribers.

Parameters

eventstring | symbolRequired
the event that the subscriber will listen for.
subscriberSubscriber<unknown>Required
the function to be called when a certain event happens. Subscribers must return a Promise.
subscriber context

Returns

thisthisRequired
this

unsubscribe

Removes function from the list of event subscribers.

Parameters

eventstring | symbolRequired
the event of the subcriber.
subscriberSubscriber<unknown>Required
the function to be removed
contextSubscriberContextRequired
subscriber context

Returns

thisthisRequired
this

emit

**emit**<TypeParameter T>(data): Promise&#60;void \| [StagedJob](/references/entities/classes/StagedJob)[]&#62;

Calls all subscribers when an event occurs.

Type Parameters

TobjectRequired

Parameters

dataEmitData<T>[]Required
The data to use to process the events

Returns

PromisePromise<void | StagedJob[]>Required
the jobs from our queue

**emit**<TypeParameter T>(data): Promise&#60;void \| [StagedJob](/references/entities/classes/StagedJob)[]&#62;

Type Parameters

TobjectRequired

Parameters

dataMessage<T>[]Required

Returns

PromisePromise<void | StagedJob[]>Required

**emit**<TypeParameter T>(eventName, data, options?): Promise&#60;void \| [StagedJob](/references/entities/classes/StagedJob)&#62;

Calls all subscribers when an event occurs.

Type Parameters

TobjectRequired

Parameters

eventNamestringRequired
the name of the event to be process.
dataTRequired
the data to send to the subscriber.
optionsRecord<string, unknown>
options to add the job with

Returns

PromisePromise<void | StagedJob>Required
the job from our queue

startEnqueuer

Returns

voidvoidRequired

stopEnqueuer

Returns

PromisePromise<void>Required

enqueuer_

Returns

PromisePromise<void>Required

listJobs

Parameters

listConfigFindConfig<StagedJob>Required

Returns

PromisePromise<never[] | StagedJob[]>Required
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