Class WorkflowsClient (2.49.0)

Service Description: Workflows is used to deploy and execute workflow programs. Workflows makes sure the program executes reliably, despite hardware and networking interruptions.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   WorkflowName name = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   Workflow response = workflowsClient.getWorkflow(name);
 }
 

Note: close() needs to be called on the WorkflowsClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of WorkflowsSettings to create(). For example:

To customize credentials:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 WorkflowsSettings workflowsSettings =
     WorkflowsSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 WorkflowsClient workflowsClient = WorkflowsClient.create(workflowsSettings);
 

To customize the endpoint:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 WorkflowsSettings workflowsSettings =
     WorkflowsSettings.newBuilder().setEndpoint(myEndpoint).build();
 WorkflowsClient workflowsClient = WorkflowsClient.create(workflowsSettings);
 

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 WorkflowsSettings workflowsSettings = WorkflowsSettings.newHttpJsonBuilder().build();
 WorkflowsClient workflowsClient = WorkflowsClient.create(workflowsSettings);
 

Please refer to the GitHub repository's samples for more quickstart code snippets.

Constructs an instance of WorkflowsClient with default settings.

Constructs an instance of WorkflowsClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Constructs an instance of WorkflowsClient, using the given stub for making calls. This is for advanced usage - prefer using create(WorkflowsSettings).

Constructs an instance of WorkflowsClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.

Creates a new workflow. If a workflow with the specified name already exists in the specified project and location, the long running operation will return ALREADY_EXISTS error.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   CreateWorkflowRequest request =
       CreateWorkflowRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setWorkflow(Workflow.newBuilder().build())
           .setWorkflowId("workflowId-360387270")
           .build();
   Workflow response = workflowsClient.createWorkflowAsync(request).get();
 }
 

Creates a new workflow. If a workflow with the specified name already exists in the specified project and location, the long running operation will return ALREADY_EXISTS error.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
   Workflow workflow = Workflow.newBuilder().build();
   String workflowId = "workflowId-360387270";
   Workflow response = workflowsClient.createWorkflowAsync(parent, workflow, workflowId).get();
 }
 

Creates a new workflow. If a workflow with the specified name already exists in the specified project and location, the long running operation will return ALREADY_EXISTS error.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
   Workflow workflow = Workflow.newBuilder().build();
   String workflowId = "workflowId-360387270";
   Workflow response = workflowsClient.createWorkflowAsync(parent, workflow, workflowId).get();
 }
 

Creates a new workflow. If a workflow with the specified name already exists in the specified project and location, the long running operation will return ALREADY_EXISTS error.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   CreateWorkflowRequest request =
       CreateWorkflowRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setWorkflow(Workflow.newBuilder().build())
           .setWorkflowId("workflowId-360387270")
           .build();
   ApiFuture<Operation> future = workflowsClient.createWorkflowCallable().futureCall(request);
   // Do something.
   Operation response = future.get();
 }
 

Creates a new workflow. If a workflow with the specified name already exists in the specified project and location, the long running operation will return ALREADY_EXISTS error.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   CreateWorkflowRequest request =
       CreateWorkflowRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setWorkflow(Workflow.newBuilder().build())
           .setWorkflowId("workflowId-360387270")
           .build();
   OperationFuture<Workflow, OperationMetadata> future =
       workflowsClient.createWorkflowOperationCallable().futureCall(request);
   // Do something.
   Workflow response = future.get();
 }
 

Deletes a workflow with the specified name. This method also cancels and deletes all running executions of the workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   DeleteWorkflowRequest request =
       DeleteWorkflowRequest.newBuilder()
           .setName(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .build();
   workflowsClient.deleteWorkflowAsync(request).get();
 }
 

Deletes a workflow with the specified name. This method also cancels and deletes all running executions of the workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   WorkflowName name = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   workflowsClient.deleteWorkflowAsync(name).get();
 }
 

Deletes a workflow with the specified name. This method also cancels and deletes all running executions of the workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   String name = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString();
   workflowsClient.deleteWorkflowAsync(name).get();
 }
 

Deletes a workflow with the specified name. This method also cancels and deletes all running executions of the workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   DeleteWorkflowRequest request =
       DeleteWorkflowRequest.newBuilder()
           .setName(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .build();
   ApiFuture<Operation> future = workflowsClient.deleteWorkflowCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Deletes a workflow with the specified name. This method also cancels and deletes all running executions of the workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   DeleteWorkflowRequest request =
       DeleteWorkflowRequest.newBuilder()
           .setName(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .build();
   OperationFuture<Empty, OperationMetadata> future =
       workflowsClient.deleteWorkflowOperationCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

Gets details of a single Workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   GetWorkflowRequest request =
       GetWorkflowRequest.newBuilder()
           .setName(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .build();
   Workflow response = workflowsClient.getWorkflow(request);
 }
 

Gets details of a single Workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   WorkflowName name = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   Workflow response = workflowsClient.getWorkflow(name);
 }
 

Gets details of a single Workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   String name = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString();
   Workflow response = workflowsClient.getWorkflow(name);
 }
 

Gets details of a single Workflow.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   GetWorkflowRequest request =
       GetWorkflowRequest.newBuilder()
           .setName(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .build();
   ApiFuture<Workflow> future = workflowsClient.getWorkflowCallable().futureCall(request);
   // Do something.
   Workflow response = future.get();
 }
 

Lists Workflows in a given project and location. The default order is not specified.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   ListWorkflowsRequest request =
       ListWorkflowsRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setFilter("filter-1274492040")
           .setOrderBy("orderBy-1207110587")
           .build();
   for (Workflow element : workflowsClient.listWorkflows(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists Workflows in a given project and location. The default order is not specified.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
   for (Workflow element : workflowsClient.listWorkflows(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists Workflows in a given project and location. The default order is not specified.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
   for (Workflow element : workflowsClient.listWorkflows(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists Workflows in a given project and location. The default order is not specified.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   ListWorkflowsRequest request =
       ListWorkflowsRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setFilter("filter-1274492040")
           .setOrderBy("orderBy-1207110587")
           .build();
   while (true) {
     ListWorkflowsResponse response = workflowsClient.listWorkflowsCallable().call(request);
     for (Workflow element : response.getWorkflowsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Lists Workflows in a given project and location. The default order is not specified.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   ListWorkflowsRequest request =
       ListWorkflowsRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setFilter("filter-1274492040")
           .setOrderBy("orderBy-1207110587")
           .build();
   ApiFuture<Workflow> future = workflowsClient.listWorkflowsPagedCallable().futureCall(request);
   // Do something.
   for (Workflow element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Updates an existing workflow. Running this method has no impact on already running executions of the workflow. A new revision of the workflow may be created as a result of a successful update operation. In that case, such revision will be used in new workflow executions.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   UpdateWorkflowRequest request =
       UpdateWorkflowRequest.newBuilder()
           .setWorkflow(Workflow.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Workflow response = workflowsClient.updateWorkflowAsync(request).get();
 }
 

Updates an existing workflow. Running this method has no impact on already running executions of the workflow. A new revision of the workflow may be created as a result of a successful update operation. In that case, such revision will be used in new workflow executions.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   Workflow workflow = Workflow.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   Workflow response = workflowsClient.updateWorkflowAsync(workflow, updateMask).get();
 }
 

Updates an existing workflow. Running this method has no impact on already running executions of the workflow. A new revision of the workflow may be created as a result of a successful update operation. In that case, such revision will be used in new workflow executions.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   UpdateWorkflowRequest request =
       UpdateWorkflowRequest.newBuilder()
           .setWorkflow(Workflow.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Operation> future = workflowsClient.updateWorkflowCallable().futureCall(request);
   // Do something.
   Operation response = future.get();
 }
 

Updates an existing workflow. Running this method has no impact on already running executions of the workflow. A new revision of the workflow may be created as a result of a successful update operation. In that case, such revision will be used in new workflow executions.

Sample code:

 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (WorkflowsClient workflowsClient = WorkflowsClient.create()) {
   UpdateWorkflowRequest request =
       UpdateWorkflowRequest.newBuilder()
           .setWorkflow(Workflow.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   OperationFuture<Workflow, OperationMetadata> future =
       workflowsClient.updateWorkflowOperationCallable().futureCall(request);
   // Do something.
   Workflow response = future.get();
 }