OperationsClient class

Manages long-running operations with an API service.

When an API method normally takes long time to complete, it can be designed to return google.longrunning.Operation to the client, and the client can use this interface to receive the real response asynchronously by polling the operation resource, or pass the operation resource to another API (such as Google Cloud Pub/Sub API) to receive the response. Any API service that returns long-running operations should implement the Operations interface so developers can have a consistent client experience.

Annotations

• @GrpcServiceName.new('google.longrunning.Operations')

Constructors

OperationsClient(ClientChannel channel, {CallOptions? options, Iterable<ClientInterceptor>? interceptors})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

$createCall<Q, R>(ClientMethod<Q, R> method, Stream<Q> requests, {CallOptions? options}) → ClientCall<Q, R>

inherited

$createStreamingCall<Q, R>(ClientMethod<Q, R> method, Stream<Q> requests, {CallOptions? options}) → ResponseStream<R>

inherited

$createUnaryCall<Q, R>(ClientMethod<Q, R> method, Q request, {CallOptions? options}) → ResponseFuture<R>

inherited

cancelOperation(CancelOperationRequest request, {CallOptions? options}) → ResponseFuture<Empty>

Starts asynchronous cancellation on a long-running operation. The server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns google.rpc.Code.UNIMPLEMENTED. Clients can use google.longrunning.Operations.GetOperation or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an google.longrunning.Operation.error value with a google.rpc.Status.code of 1, corresponding to Code.CANCELLED.

deleteOperation(DeleteOperationRequest request, {CallOptions? options}) → ResponseFuture<Empty>

Deletes a long-running operation. This method indicates that the client is no longer interested in the operation result. It does not cancel the operation. If the server doesn't support this method, it returns google.rpc.Code.UNIMPLEMENTED.

getOperation(GetOperationRequest request, {CallOptions? options}) → ResponseFuture<Operation>

Gets the latest state of a long-running operation. Clients can use this method to poll the operation result at intervals as recommended by the API service.

listOperations(ListOperationsRequest request, {CallOptions? options}) → ResponseFuture<ListOperationsResponse>

Lists operations that match the specified filter in the request. If the server doesn't support this method, it returns UNIMPLEMENTED.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

waitOperation(WaitOperationRequest request, {CallOptions? options}) → ResponseFuture<Operation>

Waits until the specified long-running operation is done or reaches at most a specified timeout, returning the latest state. If the operation is already done, the latest state is immediately returned. If the timeout specified is greater than the default HTTP/RPC timeout, the HTTP/RPC timeout is used. If the server does not support this method, it returns google.rpc.Code.UNIMPLEMENTED. Note that this method is on a best-effort basis. It may return the latest state before the specified timeout (including immediately), meaning even an immediate response is no guarantee that the operation is done.

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

defaultHost → const String

The hostname for this service.

oauthScopes → const List<String>

OAuth scopes needed for the client.