DurableTaskClient Class

Reference

Definition

Namespace:: Microsoft.DurableTask.Client

Assembly:: Microsoft.DurableTask.Client.dll

Package:: Microsoft.DurableTask.Client v1.0.0

Important

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Base class that defines client operations for managing durable task instances.

public abstract class DurableTaskClient : IAsyncDisposable, Microsoft.DurableTask.Internal.IOrchestrationSubmitter

type DurableTaskClient = class
    interface IOrchestrationSubmitter
    interface IAsyncDisposable

Public MustInherit Class DurableTaskClient
Implements IAsyncDisposable, IOrchestrationSubmitter

Inheritance: Object
DurableTaskClient

Derived: Microsoft.DurableTask.Client.Grpc.GrpcDurableTaskClient

Implements: IOrchestrationSubmitter IAsyncDisposable

Remarks

Instances of DurableTaskClient can be used to start, query, raise events to, and terminate orchestration instances. In most cases, methods on this class accept an instance ID as a parameter, which identifies the orchestration instance.

At the time of writing, the most common implementation of this class is the gRPC client, which works by making gRPC calls to a remote service (e.g. a sidecar) that implements the operation behavior. To ensure any owned network resources are properly released, instances of DurableTaskClient should be disposed when they are no longer needed.

Instances of this class are expected to be safe for multithreaded apps. You can therefore safely cache instances of this class and reuse them across multiple contexts. Caching these objects is useful to improve overall performance.

Constructors

DurableTaskClient(String)

Initializes a new instance of the DurableTaskClient class.

Properties

Name	Gets the name of the client.

Methods

DisposeAsync()	Disposes any unmanaged resources associated with this DurableTaskClient.
GetAllInstancesAsync(OrchestrationQuery)	Queries orchestration instances.
GetInstancesAsync(String, Boolean, CancellationToken)	Fetches orchestration instance metadata from the configured durable store.
GetInstancesAsync(String, CancellationToken)	Fetches orchestration instance metadata from the configured durable store.
PurgeAllInstancesAsync(PurgeInstancesFilter, CancellationToken)	Purges orchestration instances metadata from the durable store.
PurgeInstanceAsync(String, CancellationToken)	Purges orchestration instance metadata from the durable store.
RaiseEventAsync(String, String, CancellationToken)	Sends an event notification message to a waiting orchestration instance.
RaiseEventAsync(String, String, Object, CancellationToken)	Sends an event notification message to a waiting orchestration instance.
ResumeInstanceAsync(String, CancellationToken)	Resumes an orchestration instance that was suspended via SuspendInstanceAsync(String, String, CancellationToken).
ResumeInstanceAsync(String, String, CancellationToken)	Resumes an orchestration instance that was suspended via SuspendInstanceAsync(String, String, CancellationToken).
ScheduleNewOrchestrationInstanceAsync(TaskName, CancellationToken)	Schedules a new orchestration instance for execution.
ScheduleNewOrchestrationInstanceAsync(TaskName, Object, CancellationToken)	Schedules a new orchestration instance for execution.
ScheduleNewOrchestrationInstanceAsync(TaskName, Object, StartOrchestrationOptions, CancellationToken)	Schedules a new orchestration instance for execution.
ScheduleNewOrchestrationInstanceAsync(TaskName, StartOrchestrationOptions, CancellationToken)	Schedules a new orchestration instance for execution.
SuspendInstanceAsync(String, CancellationToken)	Suspends an orchestration instance, halting processing of it until ResumeInstanceAsync(String, String, CancellationToken) is used to resume the orchestration.
SuspendInstanceAsync(String, String, CancellationToken)	Suspends an orchestration instance, halting processing of it until ResumeInstanceAsync(String, String, CancellationToken) is used to resume the orchestration.
TerminateInstanceAsync(String, CancellationToken)	Terminates a running orchestration instance and updates its runtime status to Terminated.
TerminateInstanceAsync(String, Object, CancellationToken)	Terminates a running orchestration instance and updates its runtime status to Terminated.
WaitForInstanceCompletionAsync(String, Boolean, CancellationToken)	Waits for an orchestration to complete and returns a OrchestrationMetadata object that contains metadata about the started instance.
WaitForInstanceCompletionAsync(String, CancellationToken)	Waits for an orchestration to complete and returns a OrchestrationMetadata object that contains metadata about the started instance.
WaitForInstanceStartAsync(String, Boolean, CancellationToken)	Waits for an orchestration to start running and returns a OrchestrationMetadata object that contains metadata about the started instance.
WaitForInstanceStartAsync(String, CancellationToken)	Waits for an orchestration to start running and returns a OrchestrationMetadata object that contains metadata about the started instance.

Extension Methods

PurgeInstancesAsync(DurableTaskClient, Nullable<DateTimeOffset>, Nullable<DateTimeOffset>, IEnumerable<OrchestrationRuntimeStatus>, CancellationToken)	Purges orchestration instances metadata from the durable store.
PurgeInstancesAsync(DurableTaskClient, Nullable<DateTimeOffset>, Nullable<DateTimeOffset>, CancellationToken)	Purges orchestration instances metadata from the durable store.

Applies to

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