Class: ActivityClient

client.ActivityClient

Client for starting and managing Activities, and for asynchronous completion and heartbeating of Activities. Includes all functionality of AsyncCompletionClient.

Typically this client should not be instantiated directly, instead create the high level Client and use Client.activity to interact with Activities.

Hierarchy

• AsyncCompletionClient

  ↳ ActivityClient

Implements

• TypedActivityClient<any>

Constructors

constructor

• new ActivityClient(options?): ActivityClient

Parameters

Name	Type
options?	ActivityClientOptions

Returns

ActivityClient

Overrides

AsyncCompletionClient.constructor

Properties

connection

• Readonly connection: ConnectionLike

The underlying 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

AsyncCompletionClient.connection

---

options

• Readonly options: LoadedAsyncCompletionClientOptions

Inherited from

AsyncCompletionClient.options

Accessors

workflowService

• 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

AsyncCompletionClient.workflowService

Methods

complete

▸ complete(taskToken, result): Promise<void>

Complete an Activity by task token

Parameters

Name	Type
taskToken	Uint8Array
result	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.complete

▸ complete(fullActivityId, result): Promise<void>

Complete an Activity by full ID

Parameters

Name	Type
fullActivityId	FullActivityId
result	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.complete

---

count

▸ count(query): Promise<CountActivityExecutions>

Return the number of Activity executions matching the given query.

Note that the number of Activity 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

Standalone Activities are experimental. APIs may be subject to change.

Parameters

Name	Type
query	string

Returns

Promise<CountActivityExecutions>

---

execute

▸ execute<R>(activity, options): Promise<R>

Executes a Standalone Activity until completion and returns the result.

Type parameters

Name	Type
R	any

Parameters

Name	Type	Description
activity	string	Name of the activity to start.
options	ActivityOptions	Options controlling the activity execution.

Returns

Promise<R>

Result of the activity.

Standalone Activities are experimental. APIs may be subject to change.

Implementation of

TypedActivityClient.execute

---

fail

▸ fail(taskToken, err): Promise<void>

Fail an Activity by task token

Parameters

Name	Type
taskToken	Uint8Array
err	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.fail

▸ fail(fullActivityId, err): Promise<void>

Fail an Activity by full ID

Parameters

Name	Type
fullActivityId	FullActivityId
err	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.fail

---

getHandle

▸ getHandle<R>(activityId, runId?): ActivityHandle<R>

Creates an Activity handle from ID and optionally from run ID. If runId is not set, the handle will refer to the newest Activity run with the given Activity ID.

Note 1: this function always succeeds. If the provided ID is invalid, an error will only be thrown when calling the handle's methods.

Note 2: if runID is not set when calling getHandle, then runId property of the returned handle will always remain unset, even after method calls are performed. To get the run ID of the targeted activity execution, call ActivityHandle.describe and read the activityRunId field of the returned ActivityExecutionDescription.

Type parameters

Name	Type
R	any

Parameters

Name	Type	Description
activityId	string	ID of the Activity.
runId?	string	Optional run ID of the specific Activity execution.

Returns

ActivityHandle<R>

Handle to the specified activity execution.

Standalone Activities are experimental. APIs may be subject to change.

---

heartbeat

▸ heartbeat(taskToken, details?): Promise<void>

Send Activity heartbeat by task token

Parameters

Name	Type
taskToken	Uint8Array
details?	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.heartbeat

▸ heartbeat(fullActivityId, details?): Promise<void>

Send Activity heartbeat by full ID

Parameters

Name	Type
fullActivityId	FullActivityId
details?	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.heartbeat

---

list

▸ list(query): AsyncIterable<ActivityExecutionInfo>

Return a list of Activity executions matching the given query.

Note that the list of Activity 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

Standalone Activities are experimental. APIs may be subject to change.

Parameters

Name	Type
query	string

Returns

AsyncIterable<ActivityExecutionInfo>

---

reportCancellation

▸ reportCancellation(taskToken, details?): Promise<void>

Report Activity cancellation by task token

Parameters

Name	Type
taskToken	Uint8Array
details?	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.reportCancellation

▸ reportCancellation(fullActivityId, details?): Promise<void>

Report Activity cancellation by full ID

Parameters

Name	Type
fullActivityId	FullActivityId
details?	unknown

Returns

Promise<void>

Inherited from

AsyncCompletionClient.reportCancellation

---

start

▸ start<R>(activity, options): Promise<ActivityHandle<R>>

Starts new Standalone Activity execution.

Type parameters

Name	Type
R	any

Parameters

Name	Type	Description
activity	string	Name of the activity to start.
options	ActivityOptions	Options controlling the start and execution of the activity.

Returns

Promise<ActivityHandle<R>>

Handle to the started activity. The handle's runId property will be set to the started run.

Standalone Activities are experimental. APIs may be subject to change.

Implementation of

TypedActivityClient.start

---

typed

▸ typed<T>(): TypedActivityClient<T>

Returns this client as a TypedActivityClient. It enables strong type checking of Activity name, arguments and result based on the provided Activity interface. Note that no new client object is created - this method only affects type annotations.

Type parameters

Name	Description
T	Activity interface to use for type checking. The returned client can only start activities present in this interface. Standalone Activities are experimental. APIs may be subject to change.

Returns

TypedActivityClient<T>

---

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

Name
R

Parameters

Name	Type
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

AsyncCompletionClient.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

Name
R

Parameters

Name	Type	Description
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

AsyncCompletionClient.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

Name
R

Parameters

Name	Type
metadata	Metadata
fn	() => Promise<R>

Returns

Promise<R>

returned value of fn

Inherited from

AsyncCompletionClient.withMetadata