Class: TimeSkippingWorkflowClient

A client with the exact same API as the "normal" client with one exception: when this client waits on a Workflow's result, it will enable time skipping in the Test Server.

Extends

• WorkflowClient

Constructors

Constructor

new TimeSkippingWorkflowClient(options): TimeSkippingWorkflowClient

Parameters

options

WorkflowClientOptions

Returns

TimeSkippingWorkflowClient

Overrides

WorkflowClient.constructor

Properties

connection

readonly connection: ConnectionLike

The underlying Connection | connection or NativeConnection | native connection used by this client.

Clients are cheap to create, but connections are expensive. Where it makes sense, a single connection may and should be reused by multiple Clients.

Inherited from

WorkflowClient.connection

---

options

readonly options: LoadedWorkflowClientOptions

Inherited from

WorkflowClient.options

Accessors

workflowService

Get Signature

get workflowService(): WorkflowService

Raw gRPC access to the Temporal service.

NOTE: The namespace provided in options is not automatically set on requests made via this service object.

Returns

WorkflowService

Inherited from

WorkflowClient.workflowService

Methods

count()

count(query?): Promise<CountWorkflowExecution>

Return the number of Workflow Executions matching the given query. If no query is provided, then return the total number of Workflow Executions for this namespace.

Note that the number of Workflow Executions returned is approximate and eventually consistent.

More info on the concept of "visibility" and the query syntax on the Temporal documentation site: https://docs.temporal.io/visibility

Parameters

query?

string

Returns

Promise<CountWorkflowExecution>

Inherited from

WorkflowClient.count

---

execute()

execute<T>(workflowTypeOrFunc, options): Promise<WorkflowResultType<T>>

Start a new Workflow execution, then await for its completion and return that Workflow's result.

Type Parameters

T

T extends Workflow

Parameters

workflowTypeOrFunc

string | T

options

WorkflowStartOptions<T>

Returns

Promise<WorkflowResultType<T>>

the result of the Workflow execution

Inherited from

WorkflowClient.execute

---

executeUpdateWithStart()

executeUpdateWithStart<T, Ret, Args>(updateDef, updateOptions): Promise<Ret>

Start a new Workflow Execution and immediately send an Update to that Workflow, then await and return the Update's result.

The updateOptions object must contain a WithStartWorkflowOperation, which defines the options for the Workflow execution to start (e.g. the Workflow's type, task queue, input arguments, etc.)

The behavior of Update-with-Start in the case where there is already a running Workflow with the given Workflow ID depends on the specified WorkflowIDConflictPolicy. That is, if the policy is USE_EXISTING, then the Update is issued against the already existing Workflow Execution; however, if the policy is FAIL, then an error is thrown. Caller MUST specify the desired WorkflowIDConflictPolicy.

This call will block until the Update has completed. The Workflow handle can be retrieved by awaiting on WithStartWorkflowOperation.workflowHandle, whether or not the Update succeeds.

Type Parameters

T

T extends Workflow

Ret

Ret

Args

Args extends any[]

Parameters

updateDef

string | UpdateDefinition<Ret, Args, string>

updateOptions

WorkflowUpdateOptions & object

Returns

Promise<Ret>

the Update result

Inherited from

WorkflowClient.executeUpdateWithStart

---

getHandle()

Call Signature

getHandle<T>(workflowId, runId, options): WorkflowHandle<T>

Create a handle to an existing Workflow.

• If only workflowId is passed, and there are multiple Workflow Executions with that ID, the handle will refer to the most recent one.
• If workflowId and runId are passed, the handle will refer to the specific Workflow Execution with that Run ID.
• If workflowId and GetWorkflowHandleOptions.firstExecutionRunId are passed, the handle will refer to the most recent Workflow Execution in the Chain that started with firstExecutionRunId.

A Chain is a series of Workflow Executions that share the same Workflow ID and are connected by:

• Being part of the same Cron
• Continue As New
• Retries

This method does not validate workflowId. If there is no Workflow Execution with the given workflowId, handle methods like handle.describe() will throw a WorkflowNotFoundError error.

Type Parameters

T

T extends Workflow

Parameters

workflowId

string

runId

string | undefined

options

WorkflowHandleDefinitionOptions<T>

Returns

WorkflowHandle<T>

Inherited from

WorkflowClient.getHandle

Call Signature

getHandle<T>(workflowId, runId?, options?): WorkflowHandle<T>

Create a handle to an existing Workflow.

• If only workflowId is passed, and there are multiple Workflow Executions with that ID, the handle will refer to the most recent one.
• If workflowId and runId are passed, the handle will refer to the specific Workflow Execution with that Run ID.
• If workflowId and GetWorkflowHandleOptions.firstExecutionRunId are passed, the handle will refer to the most recent Workflow Execution in the Chain that started with firstExecutionRunId.

A Chain is a series of Workflow Executions that share the same Workflow ID and are connected by:

• Being part of the same Cron
• Continue As New
• Retries

This method does not validate workflowId. If there is no Workflow Execution with the given workflowId, handle methods like handle.describe() will throw a WorkflowNotFoundError error.

Type Parameters

T

T extends Workflow

Parameters

workflowId

string

runId?

string

options?

GetWorkflowHandleOptions<WorkflowResultType<T>>

Returns

WorkflowHandle<T>

Inherited from

WorkflowClient.getHandle

---

list()

list(options?): AsyncWorkflowListIterable

Return a list of Workflow Executions matching the given query.

Note that the list of Workflow Executions returned is approximate and eventually consistent.

More info on the concept of "visibility" and the query syntax on the Temporal documentation site: https://docs.temporal.io/visibility

Parameters

options?

ListOptions

Returns

AsyncWorkflowListIterable

Inherited from

WorkflowClient.list

---

result()

result<T>(workflowId, runId?, opts?): Promise<T>

Gets the result of a Workflow execution.

Type Parameters

T

T

Parameters

workflowId

string

runId?

string

opts?

WorkflowResultOptions<any>

Returns

Promise<T>

See

WorkflowClient.result

Overrides

WorkflowClient.result

---

signalWithStart()

signalWithStart<WorkflowFn, SignalArgs>(workflowTypeOrFunc, options): Promise<WorkflowHandleWithSignaledRunId<WorkflowFn>>

Start a new Workflow Execution and immediately send a Signal to that Workflow.

The behavior of Signal-with-Start in the case where there is already a running Workflow with the given Workflow ID depends on the WorkflowIDConflictPolicy. That is, if the policy is USE_EXISTING, then the Signal is issued against the already existing Workflow Execution; however, if the policy is FAIL, then an error is thrown. If no policy is specified, Signal-with-Start defaults to USE_EXISTING.

A Signal definition supplies its own TypeInfo. When signaling by name, provide call-site TypeInfo through WorkflowSignalWithStartOptions.signalTypeInfo.

Type Parameters

WorkflowFn

WorkflowFn extends Workflow

SignalArgs

SignalArgs extends any[] = []

Parameters

workflowTypeOrFunc

string | WorkflowFn

options

WithWorkflowArgs<WorkflowFn, WorkflowSignalWithStartOptions<SignalArgs>>

Returns

Promise<WorkflowHandleWithSignaledRunId<WorkflowFn>>

a WorkflowHandle to the started Workflow

Inherited from

WorkflowClient.signalWithStart

---

start()

start<T>(workflowTypeOrFunc, options): Promise<WorkflowHandleWithStartDetails<T>>

Start a new Workflow execution.

Type Parameters

T

T extends Workflow

Parameters

workflowTypeOrFunc

string | T

options

WorkflowStartOptions<T>

Returns

Promise<WorkflowHandleWithStartDetails<T>>

a WorkflowHandle to the started Workflow

Inherited from

WorkflowClient.start

---

startUpdateWithStart()

startUpdateWithStart<T, Ret, Args>(updateDef, updateOptions): Promise<WorkflowUpdateHandle<Ret>>

Start a new Workflow Execution and immediately send an Update to that Workflow, then return a WorkflowUpdateHandle for that Update.

The updateOptions object must contain a WithStartWorkflowOperation, which defines the options for the Workflow execution to start (e.g. the Workflow's type, task queue, input arguments, etc.)

The behavior of Update-with-Start in the case where there is already a running Workflow with the given Workflow ID depends on the specified WorkflowIDConflictPolicy. That is, if the policy is USE_EXISTING, then the Update is issued against the already existing Workflow Execution; however, if the policy is FAIL, then an error is thrown. Caller MUST specify the desired WorkflowIDConflictPolicy.

This call will block until the Update has reached the specified WorkflowUpdateStage. Note that this means that the call will not return successfully until the Update has been delivered to a Worker. The Workflow handle can be retrieved by awaiting on WithStartWorkflowOperation.workflowHandle, whether or not the Update succeeds.

Type Parameters

T

T extends Workflow

Ret

Ret

Args

Args extends any[]

Parameters

updateDef

string | UpdateDefinition<Ret, Args, string>

updateOptions

WorkflowUpdateOptions & object

Returns

Promise<WorkflowUpdateHandle<Ret>>

a WorkflowUpdateHandle to the started Update

Inherited from

WorkflowClient.startUpdateWithStart

---

withAbortSignal()

withAbortSignal<R>(abortSignal, fn): Promise<R>

Set an AbortSignal that, when aborted, cancels any ongoing service requests executed in fn's scope. This will locally result in the request call throwing a _grpc.ServiceError|ServiceError with code _grpc.status.CANCELLED|CANCELLED; see isGrpcCancelledError.

This method is only a convenience wrapper around Connection.withAbortSignal.

Type Parameters

R

R

Parameters

abortSignal

AbortSignal

fn

() => Promise<R>

Returns

Promise<R>

value returned from fn

See

https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal

Inherited from

WorkflowClient.withAbortSignal

---

withDeadline()

withDeadline<R>(deadline, fn): Promise<R>

Set a deadline for any service requests executed in fn's scope.

The deadline is a point in time after which any pending gRPC request will be considered as failed; this will locally result in the request call throwing a _grpc.ServiceError|ServiceError with code _grpc.status.DEADLINE_EXCEEDED|DEADLINE_EXCEEDED; see isGrpcDeadlineError.

It is stronly recommended to explicitly set deadlines. If no deadline is set, then it is possible for the client to end up waiting forever for a response.

This method is only a convenience wrapper around Connection.withDeadline.

Type Parameters

R

R

Parameters

deadline

number | Date

a point in time after which the request will be considered as failed; either a Date object, or a number of milliseconds since the Unix epoch (UTC).

fn

() => Promise<R>

Returns

Promise<R>

the value returned from fn

See

https://grpc.io/docs/guides/deadlines/

Inherited from

WorkflowClient.withDeadline

---

withMetadata()

withMetadata<R>(metadata, fn): Promise<R>

Set metadata for any service requests executed in fn's scope.

This method is only a convenience wrapper around Connection.withMetadata.

Type Parameters

R

R

Parameters

metadata

Metadata

fn

() => Promise<R>

Returns

Promise<R>

returned value of fn

Inherited from

WorkflowClient.withMetadata