Package com.google.cloud.tasks.v2

Class CloudTasksClient

  • All Implemented Interfaces:
    com.google.api.gax.core.BackgroundResource, AutoCloseable
    @Generated("by gapic-generator-java")
public class CloudTasksClient
extends Object
implements com.google.api.gax.core.BackgroundResource
    Service Description: Cloud Tasks allows developers to manage the execution of background work in their applications.

    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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Queue response = cloudTasksClient.getQueue(name);
 }

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

    The surface of this class includes several types of Java methods for each of the API's methods:

    1. A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
    2. A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
    3. A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

    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 CloudTasksSettings 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
 CloudTasksSettings cloudTasksSettings =
     CloudTasksSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 CloudTasksClient cloudTasksClient = CloudTasksClient.create(cloudTasksSettings);

    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
 CloudTasksSettings cloudTasksSettings =
     CloudTasksSettings.newBuilder().setEndpoint(myEndpoint).build();
 CloudTasksClient cloudTasksClient = CloudTasksClient.create(cloudTasksSettings);

    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
 CloudTasksSettings cloudTasksSettings = CloudTasksSettings.newHttpJsonBuilder().build();
 CloudTasksClient cloudTasksClient = CloudTasksClient.create(cloudTasksSettings);

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

    • Constructor Detail

      • CloudTasksClient

        protected CloudTasksClient​(CloudTasksSettings settings)
                    throws IOException
        Constructs an instance of CloudTasksClient, 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.
        Throws:
        IOException

      • CloudTasksClient

        protected CloudTasksClient​(CloudTasksStub stub)

    • Method Detail

      • create

        public static final CloudTasksClient create​(CloudTasksSettings settings)
                                     throws IOException
        Constructs an instance of CloudTasksClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.
        Throws:
        IOException

      • create

        public static final CloudTasksClient create​(CloudTasksStub stub)
        Constructs an instance of CloudTasksClient, using the given stub for making calls. This is for advanced usage - prefer using create(CloudTasksSettings).

      • listQueues

        public final CloudTasksClient.ListQueuesPagedResponse listQueues​(LocationName parent)
        Lists queues.

        Queues are returned in lexicographical order.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
   for (Queue element : cloudTasksClient.listQueues(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        parent - Required. The location name. For example: `projects/PROJECT_ID/locations/LOCATION_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listQueues

        public final CloudTasksClient.ListQueuesPagedResponse listQueues​(String parent)
        Lists queues.

        Queues are returned in lexicographical order.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
   for (Queue element : cloudTasksClient.listQueues(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        parent - Required. The location name. For example: `projects/PROJECT_ID/locations/LOCATION_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listQueues

        public final CloudTasksClient.ListQueuesPagedResponse listQueues​(ListQueuesRequest request)
        Lists queues.

        Queues are returned in lexicographical order.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListQueuesRequest request =
       ListQueuesRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Queue element : cloudTasksClient.listQueues(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listQueuesPagedCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListQueuesRequest,​CloudTasksClient.ListQueuesPagedResponse> listQueuesPagedCallable()
        Lists queues.

        Queues are returned in lexicographical order.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListQueuesRequest request =
       ListQueuesRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Queue> future = cloudTasksClient.listQueuesPagedCallable().futureCall(request);
   // Do something.
   for (Queue element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

      • listQueuesCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListQueuesRequest,​ListQueuesResponse> listQueuesCallable()
        Lists queues.

        Queues are returned in lexicographical order.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListQueuesRequest request =
       ListQueuesRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListQueuesResponse response = cloudTasksClient.listQueuesCallable().call(request);
     for (Queue element : response.getQueuesList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

      • getQueue

        public final Queue getQueue​(QueueName name)
        Gets a queue.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Queue response = cloudTasksClient.getQueue(name);
 }
        Parameters:
        name - Required. The resource name of the queue. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getQueue

        public final Queue getQueue​(String name)
        Gets a queue.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Queue response = cloudTasksClient.getQueue(name);
 }
        Parameters:
        name - Required. The resource name of the queue. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getQueue

        public final Queue getQueue​(GetQueueRequest request)
        Gets a queue.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetQueueRequest request =
       GetQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   Queue response = cloudTasksClient.getQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<GetQueueRequest,​Queue> getQueueCallable()
        Gets a queue.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetQueueRequest request =
       GetQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.getQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • createQueue

        public final Queue createQueue​(LocationName parent,
                               Queue queue)
        Creates a queue.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
   Queue queue = Queue.newBuilder().build();
   Queue response = cloudTasksClient.createQueue(parent, queue);
 }
        Parameters:
        parent - Required. The location name in which the queue will be created. For example: `projects/PROJECT_ID/locations/LOCATION_ID`

        The list of allowed locations can be obtained by calling Cloud Tasks' implementation of [ListLocations][google.cloud.location.Locations.ListLocations].

        queue - Required. The queue to create.

        [Queue's name][google.cloud.tasks.v2.Queue.name] cannot be the same as an existing queue.

        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createQueue

        public final Queue createQueue​(String parent,
                               Queue queue)
        Creates a queue.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
   Queue queue = Queue.newBuilder().build();
   Queue response = cloudTasksClient.createQueue(parent, queue);
 }
        Parameters:
        parent - Required. The location name in which the queue will be created. For example: `projects/PROJECT_ID/locations/LOCATION_ID`

        The list of allowed locations can be obtained by calling Cloud Tasks' implementation of [ListLocations][google.cloud.location.Locations.ListLocations].

        queue - Required. The queue to create.

        [Queue's name][google.cloud.tasks.v2.Queue.name] cannot be the same as an existing queue.

        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createQueue

        public final Queue createQueue​(CreateQueueRequest request)
        Creates a queue.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   CreateQueueRequest request =
       CreateQueueRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setQueue(Queue.newBuilder().build())
           .build();
   Queue response = cloudTasksClient.createQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<CreateQueueRequest,​Queue> createQueueCallable()
        Creates a queue.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   CreateQueueRequest request =
       CreateQueueRequest.newBuilder()
           .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
           .setQueue(Queue.newBuilder().build())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.createQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • updateQueue

        public final Queue updateQueue​(Queue queue,
                               com.google.protobuf.FieldMask updateMask)
        Updates a queue.

        This method creates the queue if it does not exist and updates the queue if it does exist.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   Queue queue = Queue.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   Queue response = cloudTasksClient.updateQueue(queue, updateMask);
 }
        Parameters:
        queue - Required. The queue to create or update.

        The queue's [name][google.cloud.tasks.v2.Queue.name] must be specified.

        Output only fields cannot be modified using UpdateQueue. Any value specified for an output only field will be ignored. The queue's [name][google.cloud.tasks.v2.Queue.name] cannot be changed.

        updateMask - A mask used to specify which fields of the queue are being updated.

        If empty, then all fields will be updated.

        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • updateQueue

        public final Queue updateQueue​(UpdateQueueRequest request)
        Updates a queue.

        This method creates the queue if it does not exist and updates the queue if it does exist.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   UpdateQueueRequest request =
       UpdateQueueRequest.newBuilder()
           .setQueue(Queue.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Queue response = cloudTasksClient.updateQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • updateQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<UpdateQueueRequest,​Queue> updateQueueCallable()
        Updates a queue.

        This method creates the queue if it does not exist and updates the queue if it does exist.

        Queues created with this method allow tasks to live for a maximum of 31 days. After a task is 31 days old, the task will be deleted regardless of whether it was dispatched or not.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   UpdateQueueRequest request =
       UpdateQueueRequest.newBuilder()
           .setQueue(Queue.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.updateQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • deleteQueue

        public final void deleteQueue​(QueueName name)
        Deletes a queue.

        This command will delete the queue even if it has tasks in it.

        Note: If you delete a queue, a queue with the same name can't be created for 7 days.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   cloudTasksClient.deleteQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteQueue

        public final void deleteQueue​(String name)
        Deletes a queue.

        This command will delete the queue even if it has tasks in it.

        Note: If you delete a queue, a queue with the same name can't be created for 7 days.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   cloudTasksClient.deleteQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteQueue

        public final void deleteQueue​(DeleteQueueRequest request)
        Deletes a queue.

        This command will delete the queue even if it has tasks in it.

        Note: If you delete a queue, a queue with the same name can't be created for 7 days.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   DeleteQueueRequest request =
       DeleteQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   cloudTasksClient.deleteQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<DeleteQueueRequest,​com.google.protobuf.Empty> deleteQueueCallable()
        Deletes a queue.

        This command will delete the queue even if it has tasks in it.

        Note: If you delete a queue, a queue with the same name can't be created for 7 days.

        WARNING: Using this method may have unintended side effects if you are using an App Engine `queue.yaml` or `queue.xml` file to manage your queues. Read [Overview of Queue Management and queue.yaml](https://cloud.google.com/tasks/docs/queue-yaml) before using this method.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   DeleteQueueRequest request =
       DeleteQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   ApiFuture<Empty> future = cloudTasksClient.deleteQueueCallable().futureCall(request);
   // Do something.
   future.get();
 }

      • purgeQueue

        public final Queue purgeQueue​(QueueName name)
        Purges a queue by deleting all of its tasks.

        All tasks created before this method is called are permanently deleted.

        Purge operations can take up to one minute to take effect. Tasks might be dispatched before the purge takes effect. A purge is irreversible.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Queue response = cloudTasksClient.purgeQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • purgeQueue

        public final Queue purgeQueue​(String name)
        Purges a queue by deleting all of its tasks.

        All tasks created before this method is called are permanently deleted.

        Purge operations can take up to one minute to take effect. Tasks might be dispatched before the purge takes effect. A purge is irreversible.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Queue response = cloudTasksClient.purgeQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • purgeQueue

        public final Queue purgeQueue​(PurgeQueueRequest request)
        Purges a queue by deleting all of its tasks.

        All tasks created before this method is called are permanently deleted.

        Purge operations can take up to one minute to take effect. Tasks might be dispatched before the purge takes effect. A purge is irreversible.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   PurgeQueueRequest request =
       PurgeQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   Queue response = cloudTasksClient.purgeQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • purgeQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<PurgeQueueRequest,​Queue> purgeQueueCallable()
        Purges a queue by deleting all of its tasks.

        All tasks created before this method is called are permanently deleted.

        Purge operations can take up to one minute to take effect. Tasks might be dispatched before the purge takes effect. A purge is irreversible.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   PurgeQueueRequest request =
       PurgeQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.purgeQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • pauseQueue

        public final Queue pauseQueue​(QueueName name)
        Pauses the queue.

        If a queue is paused then the system will stop dispatching tasks until the queue is resumed via [ResumeQueue][google.cloud.tasks.v2.CloudTasks.ResumeQueue]. Tasks can still be added when the queue is paused. A queue is paused if its [state][google.cloud.tasks.v2.Queue.state] is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Queue response = cloudTasksClient.pauseQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • pauseQueue

        public final Queue pauseQueue​(String name)
        Pauses the queue.

        If a queue is paused then the system will stop dispatching tasks until the queue is resumed via [ResumeQueue][google.cloud.tasks.v2.CloudTasks.ResumeQueue]. Tasks can still be added when the queue is paused. A queue is paused if its [state][google.cloud.tasks.v2.Queue.state] is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Queue response = cloudTasksClient.pauseQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • pauseQueue

        public final Queue pauseQueue​(PauseQueueRequest request)
        Pauses the queue.

        If a queue is paused then the system will stop dispatching tasks until the queue is resumed via [ResumeQueue][google.cloud.tasks.v2.CloudTasks.ResumeQueue]. Tasks can still be added when the queue is paused. A queue is paused if its [state][google.cloud.tasks.v2.Queue.state] is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   PauseQueueRequest request =
       PauseQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   Queue response = cloudTasksClient.pauseQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • pauseQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<PauseQueueRequest,​Queue> pauseQueueCallable()
        Pauses the queue.

        If a queue is paused then the system will stop dispatching tasks until the queue is resumed via [ResumeQueue][google.cloud.tasks.v2.CloudTasks.ResumeQueue]. Tasks can still be added when the queue is paused. A queue is paused if its [state][google.cloud.tasks.v2.Queue.state] is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   PauseQueueRequest request =
       PauseQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.pauseQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • resumeQueue

        public final Queue resumeQueue​(QueueName name)
        Resume a queue.

        This method resumes a queue after it has been [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED] or [DISABLED][google.cloud.tasks.v2.Queue.State.DISABLED]. The state of a queue is stored in the queue's [state][google.cloud.tasks.v2.Queue.state]; after calling this method it will be set to [RUNNING][google.cloud.tasks.v2.Queue.State.RUNNING].

        WARNING: Resuming many high-QPS queues at the same time can lead to target overloading. If you are resuming high-QPS queues, follow the 500/50/5 pattern described in [Managing Cloud Tasks Scaling Risks](https://cloud.google.com/tasks/docs/manage-cloud-task-scaling).

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Queue response = cloudTasksClient.resumeQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • resumeQueue

        public final Queue resumeQueue​(String name)
        Resume a queue.

        This method resumes a queue after it has been [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED] or [DISABLED][google.cloud.tasks.v2.Queue.State.DISABLED]. The state of a queue is stored in the queue's [state][google.cloud.tasks.v2.Queue.state]; after calling this method it will be set to [RUNNING][google.cloud.tasks.v2.Queue.State.RUNNING].

        WARNING: Resuming many high-QPS queues at the same time can lead to target overloading. If you are resuming high-QPS queues, follow the 500/50/5 pattern described in [Managing Cloud Tasks Scaling Risks](https://cloud.google.com/tasks/docs/manage-cloud-task-scaling).

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Queue response = cloudTasksClient.resumeQueue(name);
 }
        Parameters:
        name - Required. The queue name. For example: `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • resumeQueue

        public final Queue resumeQueue​(ResumeQueueRequest request)
        Resume a queue.

        This method resumes a queue after it has been [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED] or [DISABLED][google.cloud.tasks.v2.Queue.State.DISABLED]. The state of a queue is stored in the queue's [state][google.cloud.tasks.v2.Queue.state]; after calling this method it will be set to [RUNNING][google.cloud.tasks.v2.Queue.State.RUNNING].

        WARNING: Resuming many high-QPS queues at the same time can lead to target overloading. If you are resuming high-QPS queues, follow the 500/50/5 pattern described in [Managing Cloud Tasks Scaling Risks](https://cloud.google.com/tasks/docs/manage-cloud-task-scaling).

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ResumeQueueRequest request =
       ResumeQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   Queue response = cloudTasksClient.resumeQueue(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • resumeQueueCallable

        public final com.google.api.gax.rpc.UnaryCallable<ResumeQueueRequest,​Queue> resumeQueueCallable()
        Resume a queue.

        This method resumes a queue after it has been [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED] or [DISABLED][google.cloud.tasks.v2.Queue.State.DISABLED]. The state of a queue is stored in the queue's [state][google.cloud.tasks.v2.Queue.state]; after calling this method it will be set to [RUNNING][google.cloud.tasks.v2.Queue.State.RUNNING].

        WARNING: Resuming many high-QPS queues at the same time can lead to target overloading. If you are resuming high-QPS queues, follow the 500/50/5 pattern described in [Managing Cloud Tasks Scaling Risks](https://cloud.google.com/tasks/docs/manage-cloud-task-scaling).

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ResumeQueueRequest request =
       ResumeQueueRequest.newBuilder()
           .setName(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .build();
   ApiFuture<Queue> future = cloudTasksClient.resumeQueueCallable().futureCall(request);
   // Do something.
   Queue response = future.get();
 }

      • getIamPolicy

        public final com.google.iam.v1.Policy getIamPolicy​(com.google.api.resourcenames.ResourceName resource)
        Gets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Returns an empty policy if the resource exists and does not have a policy set.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.getIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ResourceName resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Policy response = cloudTasksClient.getIamPolicy(resource);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getIamPolicy

        public final com.google.iam.v1.Policy getIamPolicy​(String resource)
        Gets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Returns an empty policy if the resource exists and does not have a policy set.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.getIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Policy response = cloudTasksClient.getIamPolicy(resource);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getIamPolicy

        public final com.google.iam.v1.Policy getIamPolicy​(com.google.iam.v1.GetIamPolicyRequest request)
        Gets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Returns an empty policy if the resource exists and does not have a policy set.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.getIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   Policy response = cloudTasksClient.getIamPolicy(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getIamPolicy

        public final com.google.iam.v1.Policy getIamPolicy​(QueueName queueName)

      • getIamPolicyCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.GetIamPolicyRequest,​com.google.iam.v1.Policy> getIamPolicyCallable()
        Gets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Returns an empty policy if the resource exists and does not have a policy set.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.getIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   ApiFuture<Policy> future = cloudTasksClient.getIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }

      • setIamPolicy

        public final com.google.iam.v1.Policy setIamPolicy​(com.google.api.resourcenames.ResourceName resource,
                                                   com.google.iam.v1.Policy policy)
        Sets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Replaces any existing policy.

        Note: The Cloud Console does not check queue-level IAM permissions yet. Project-level permissions are required to use the Cloud Console.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.setIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ResourceName resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Policy policy = Policy.newBuilder().build();
   Policy response = cloudTasksClient.setIamPolicy(resource, policy);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.
        policy - REQUIRED: The complete policy to be applied to the `resource`. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • setIamPolicy

        public final com.google.iam.v1.Policy setIamPolicy​(String resource,
                                                   com.google.iam.v1.Policy policy)
        Sets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Replaces any existing policy.

        Note: The Cloud Console does not check queue-level IAM permissions yet. Project-level permissions are required to use the Cloud Console.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.setIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Policy policy = Policy.newBuilder().build();
   Policy response = cloudTasksClient.setIamPolicy(resource, policy);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.
        policy - REQUIRED: The complete policy to be applied to the `resource`. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • setIamPolicy

        public final com.google.iam.v1.Policy setIamPolicy​(com.google.iam.v1.SetIamPolicyRequest request)
        Sets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Replaces any existing policy.

        Note: The Cloud Console does not check queue-level IAM permissions yet. Project-level permissions are required to use the Cloud Console.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.setIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Policy response = cloudTasksClient.setIamPolicy(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • setIamPolicy

        public final com.google.iam.v1.Policy setIamPolicy​(QueueName queue,
                                                   com.google.iam.v1.Policy policy)

      • setIamPolicyCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.SetIamPolicyRequest,​com.google.iam.v1.Policy> setIamPolicyCallable()
        Sets the access control policy for a [Queue][google.cloud.tasks.v2.Queue]. Replaces any existing policy.

        Note: The Cloud Console does not check queue-level IAM permissions yet. Project-level permissions are required to use the Cloud Console.

        Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission on the specified resource parent:

        • `cloudtasks.queues.setIamPolicy`

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Policy> future = cloudTasksClient.setIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }

      • testIamPermissions

        public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions​(com.google.api.resourcenames.ResourceName resource,
                                                                             List<String> permissions)
        Returns permissions that a caller has on a [Queue][google.cloud.tasks.v2.Queue]. If the resource does not exist, this will return an empty set of permissions, not a [NOT_FOUND][google.rpc.Code.NOT_FOUND] error.

        Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ResourceName resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   List<String> permissions = new ArrayList<>();
   TestIamPermissionsResponse response =
       cloudTasksClient.testIamPermissions(resource, permissions);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field.
        permissions - The set of permissions to check for the `resource`. Permissions with wildcards (such as '*' or 'storage.*') are not allowed. For more information see [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • testIamPermissions

        public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions​(String resource,
                                                                             List<String> permissions)
        Returns permissions that a caller has on a [Queue][google.cloud.tasks.v2.Queue]. If the resource does not exist, this will return an empty set of permissions, not a [NOT_FOUND][google.rpc.Code.NOT_FOUND] error.

        Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String resource = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   List<String> permissions = new ArrayList<>();
   TestIamPermissionsResponse response =
       cloudTasksClient.testIamPermissions(resource, permissions);
 }
        Parameters:
        resource - REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field.
        permissions - The set of permissions to check for the `resource`. Permissions with wildcards (such as '*' or 'storage.*') are not allowed. For more information see [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • testIamPermissions

        public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions​(com.google.iam.v1.TestIamPermissionsRequest request)
        Returns permissions that a caller has on a [Queue][google.cloud.tasks.v2.Queue]. If the resource does not exist, this will return an empty set of permissions, not a [NOT_FOUND][google.rpc.Code.NOT_FOUND] error.

        Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   TestIamPermissionsResponse response = cloudTasksClient.testIamPermissions(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • testIamPermissions

        public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions​(QueueName queue,
                                                                             List<String> permissions)

      • testIamPermissionsCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.TestIamPermissionsRequest,​com.google.iam.v1.TestIamPermissionsResponse> testIamPermissionsCallable()
        Returns permissions that a caller has on a [Queue][google.cloud.tasks.v2.Queue]. If the resource does not exist, this will return an empty set of permissions, not a [NOT_FOUND][google.rpc.Code.NOT_FOUND] error.

        Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   ApiFuture<TestIamPermissionsResponse> future =
       cloudTasksClient.testIamPermissionsCallable().futureCall(request);
   // Do something.
   TestIamPermissionsResponse response = future.get();
 }

      • listTasks

        public final CloudTasksClient.ListTasksPagedResponse listTasks​(QueueName parent)
        Lists the tasks in a queue.

        By default, only the [BASIC][google.cloud.tasks.v2.Task.View.BASIC] view is retrieved due to performance considerations; [response_view][google.cloud.tasks.v2.ListTasksRequest.response_view] controls the subset of information which is returned.

        The tasks may be returned in any order. The ordering may change at any time.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName parent = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   for (Task element : cloudTasksClient.listTasks(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        parent - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listTasks

        public final CloudTasksClient.ListTasksPagedResponse listTasks​(String parent)
        Lists the tasks in a queue.

        By default, only the [BASIC][google.cloud.tasks.v2.Task.View.BASIC] view is retrieved due to performance considerations; [response_view][google.cloud.tasks.v2.ListTasksRequest.response_view] controls the subset of information which is returned.

        The tasks may be returned in any order. The ordering may change at any time.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String parent = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   for (Task element : cloudTasksClient.listTasks(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        parent - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listTasks

        public final CloudTasksClient.ListTasksPagedResponse listTasks​(ListTasksRequest request)
        Lists the tasks in a queue.

        By default, only the [BASIC][google.cloud.tasks.v2.Task.View.BASIC] view is retrieved due to performance considerations; [response_view][google.cloud.tasks.v2.ListTasksRequest.response_view] controls the subset of information which is returned.

        The tasks may be returned in any order. The ordering may change at any time.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListTasksRequest request =
       ListTasksRequest.newBuilder()
           .setParent(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Task element : cloudTasksClient.listTasks(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listTasksPagedCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListTasksRequest,​CloudTasksClient.ListTasksPagedResponse> listTasksPagedCallable()
        Lists the tasks in a queue.

        By default, only the [BASIC][google.cloud.tasks.v2.Task.View.BASIC] view is retrieved due to performance considerations; [response_view][google.cloud.tasks.v2.ListTasksRequest.response_view] controls the subset of information which is returned.

        The tasks may be returned in any order. The ordering may change at any time.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListTasksRequest request =
       ListTasksRequest.newBuilder()
           .setParent(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Task> future = cloudTasksClient.listTasksPagedCallable().futureCall(request);
   // Do something.
   for (Task element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

      • listTasksCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListTasksRequest,​ListTasksResponse> listTasksCallable()
        Lists the tasks in a queue.

        By default, only the [BASIC][google.cloud.tasks.v2.Task.View.BASIC] view is retrieved due to performance considerations; [response_view][google.cloud.tasks.v2.ListTasksRequest.response_view] controls the subset of information which is returned.

        The tasks may be returned in any order. The ordering may change at any time.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListTasksRequest request =
       ListTasksRequest.newBuilder()
           .setParent(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListTasksResponse response = cloudTasksClient.listTasksCallable().call(request);
     for (Task element : response.getTasksList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

      • getTask

        public final Task getTask​(TaskName name)
        Gets a task.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   TaskName name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]");
   Task response = cloudTasksClient.getTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getTask

        public final Task getTask​(String name)
        Gets a task.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString();
   Task response = cloudTasksClient.getTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getTask

        public final Task getTask​(GetTaskRequest request)
        Gets a task.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetTaskRequest request =
       GetTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   Task response = cloudTasksClient.getTask(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getTaskCallable

        public final com.google.api.gax.rpc.UnaryCallable<GetTaskRequest,​Task> getTaskCallable()
        Gets a task.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetTaskRequest request =
       GetTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   ApiFuture<Task> future = cloudTasksClient.getTaskCallable().futureCall(request);
   // Do something.
   Task response = future.get();
 }

      • createTask

        public final Task createTask​(QueueName parent,
                             Task task)
        Creates a task and adds it to a queue.

        Tasks cannot be updated after creation; there is no UpdateTask command.

        • The maximum task size is 100KB.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   QueueName parent = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]");
   Task task = Task.newBuilder().build();
   Task response = cloudTasksClient.createTask(parent, task);
 }
        Parameters:
        parent - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`

        The queue must already exist.

        task - Required. The task to add.

        Task names have the following format: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`. The user can optionally specify a task [name][google.cloud.tasks.v2.Task.name]. If a name is not specified then the system will generate a random unique task id, which will be set in the task returned in the [response][google.cloud.tasks.v2.Task.name].

        If [schedule_time][google.cloud.tasks.v2.Task.schedule_time] is not set or is in the past then Cloud Tasks will set it to the current time.

        Task De-duplication:

        Explicitly specifying a task ID enables task de-duplication. If a task's ID is identical to that of an existing task or a task that was deleted or executed recently then the call will fail with [ALREADY_EXISTS][google.rpc.Code.ALREADY_EXISTS]. If the task's queue was created using Cloud Tasks, then another task with the same name can't be created for ~1hour after the original task was deleted or executed. If the task's queue was created using queue.yaml or queue.xml, then another task with the same name can't be created for ~9days after the original task was deleted or executed.

        Because there is an extra lookup cost to identify duplicate task names, these [CreateTask][google.cloud.tasks.v2.CloudTasks.CreateTask] calls have significantly increased latency. Using hashed strings for the task id or for the prefix of the task id is recommended. Choosing task ids that are sequential or have sequential prefixes, for example using a timestamp, causes an increase in latency and error rates in all task commands. The infrastructure relies on an approximately uniform distribution of task ids to store and serve tasks efficiently.

        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createTask

        public final Task createTask​(String parent,
                             Task task)
        Creates a task and adds it to a queue.

        Tasks cannot be updated after creation; there is no UpdateTask command.

        • The maximum task size is 100KB.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String parent = QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString();
   Task task = Task.newBuilder().build();
   Task response = cloudTasksClient.createTask(parent, task);
 }
        Parameters:
        parent - Required. The queue name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID`

        The queue must already exist.

        task - Required. The task to add.

        Task names have the following format: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`. The user can optionally specify a task [name][google.cloud.tasks.v2.Task.name]. If a name is not specified then the system will generate a random unique task id, which will be set in the task returned in the [response][google.cloud.tasks.v2.Task.name].

        If [schedule_time][google.cloud.tasks.v2.Task.schedule_time] is not set or is in the past then Cloud Tasks will set it to the current time.

        Task De-duplication:

        Explicitly specifying a task ID enables task de-duplication. If a task's ID is identical to that of an existing task or a task that was deleted or executed recently then the call will fail with [ALREADY_EXISTS][google.rpc.Code.ALREADY_EXISTS]. If the task's queue was created using Cloud Tasks, then another task with the same name can't be created for ~1hour after the original task was deleted or executed. If the task's queue was created using queue.yaml or queue.xml, then another task with the same name can't be created for ~9days after the original task was deleted or executed.

        Because there is an extra lookup cost to identify duplicate task names, these [CreateTask][google.cloud.tasks.v2.CloudTasks.CreateTask] calls have significantly increased latency. Using hashed strings for the task id or for the prefix of the task id is recommended. Choosing task ids that are sequential or have sequential prefixes, for example using a timestamp, causes an increase in latency and error rates in all task commands. The infrastructure relies on an approximately uniform distribution of task ids to store and serve tasks efficiently.

        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createTask

        public final Task createTask​(CreateTaskRequest request)
        Creates a task and adds it to a queue.

        Tasks cannot be updated after creation; there is no UpdateTask command.

        • The maximum task size is 100KB.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   CreateTaskRequest request =
       CreateTaskRequest.newBuilder()
           .setParent(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setTask(Task.newBuilder().build())
           .build();
   Task response = cloudTasksClient.createTask(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • createTaskCallable

        public final com.google.api.gax.rpc.UnaryCallable<CreateTaskRequest,​Task> createTaskCallable()
        Creates a task and adds it to a queue.

        Tasks cannot be updated after creation; there is no UpdateTask command.

        • The maximum task size is 100KB.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   CreateTaskRequest request =
       CreateTaskRequest.newBuilder()
           .setParent(QueueName.of("[PROJECT]", "[LOCATION]", "[QUEUE]").toString())
           .setTask(Task.newBuilder().build())
           .build();
   ApiFuture<Task> future = cloudTasksClient.createTaskCallable().futureCall(request);
   // Do something.
   Task response = future.get();
 }

      • deleteTask

        public final void deleteTask​(TaskName name)
        Deletes a task.

        A task can be deleted if it is scheduled or dispatched. A task cannot be deleted if it has executed successfully or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   TaskName name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]");
   cloudTasksClient.deleteTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteTask

        public final void deleteTask​(String name)
        Deletes a task.

        A task can be deleted if it is scheduled or dispatched. A task cannot be deleted if it has executed successfully or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString();
   cloudTasksClient.deleteTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteTask

        public final void deleteTask​(DeleteTaskRequest request)
        Deletes a task.

        A task can be deleted if it is scheduled or dispatched. A task cannot be deleted if it has executed successfully or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   DeleteTaskRequest request =
       DeleteTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   cloudTasksClient.deleteTask(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteTaskCallable

        public final com.google.api.gax.rpc.UnaryCallable<DeleteTaskRequest,​com.google.protobuf.Empty> deleteTaskCallable()
        Deletes a task.

        A task can be deleted if it is scheduled or dispatched. A task cannot be deleted if it has executed successfully or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   DeleteTaskRequest request =
       DeleteTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   ApiFuture<Empty> future = cloudTasksClient.deleteTaskCallable().futureCall(request);
   // Do something.
   future.get();
 }

      • runTask

        public final Task runTask​(TaskName name)
        Forces a task to run now.

        When this method is called, Cloud Tasks will dispatch the task, even if the task is already running, the queue has reached its [RateLimits][google.cloud.tasks.v2.RateLimits] or is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        This command is meant to be used for manual debugging. For example, [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] can be used to retry a failed task after a fix has been made or to manually force a task to be dispatched now.

        The dispatched task is returned. That is, the task that is returned contains the [status][Task.status] after the task is dispatched but before the task is received by its target.

        If Cloud Tasks receives a successful response from the task's target, then the task will be deleted; otherwise the task's [schedule_time][google.cloud.tasks.v2.Task.schedule_time] will be reset to the time that [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] was called plus the retry delay specified in the queue's [RetryConfig][google.cloud.tasks.v2.RetryConfig].

        [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] returns [NOT_FOUND][google.rpc.Code.NOT_FOUND] when it is called on a task that has already succeeded or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   TaskName name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]");
   Task response = cloudTasksClient.runTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • runTask

        public final Task runTask​(String name)
        Forces a task to run now.

        When this method is called, Cloud Tasks will dispatch the task, even if the task is already running, the queue has reached its [RateLimits][google.cloud.tasks.v2.RateLimits] or is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        This command is meant to be used for manual debugging. For example, [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] can be used to retry a failed task after a fix has been made or to manually force a task to be dispatched now.

        The dispatched task is returned. That is, the task that is returned contains the [status][Task.status] after the task is dispatched but before the task is received by its target.

        If Cloud Tasks receives a successful response from the task's target, then the task will be deleted; otherwise the task's [schedule_time][google.cloud.tasks.v2.Task.schedule_time] will be reset to the time that [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] was called plus the retry delay specified in the queue's [RetryConfig][google.cloud.tasks.v2.RetryConfig].

        [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] returns [NOT_FOUND][google.rpc.Code.NOT_FOUND] when it is called on a task that has already succeeded or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   String name = TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString();
   Task response = cloudTasksClient.runTask(name);
 }
        Parameters:
        name - Required. The task name. For example: `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • runTask

        public final Task runTask​(RunTaskRequest request)
        Forces a task to run now.

        When this method is called, Cloud Tasks will dispatch the task, even if the task is already running, the queue has reached its [RateLimits][google.cloud.tasks.v2.RateLimits] or is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        This command is meant to be used for manual debugging. For example, [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] can be used to retry a failed task after a fix has been made or to manually force a task to be dispatched now.

        The dispatched task is returned. That is, the task that is returned contains the [status][Task.status] after the task is dispatched but before the task is received by its target.

        If Cloud Tasks receives a successful response from the task's target, then the task will be deleted; otherwise the task's [schedule_time][google.cloud.tasks.v2.Task.schedule_time] will be reset to the time that [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] was called plus the retry delay specified in the queue's [RetryConfig][google.cloud.tasks.v2.RetryConfig].

        [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] returns [NOT_FOUND][google.rpc.Code.NOT_FOUND] when it is called on a task that has already succeeded or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   RunTaskRequest request =
       RunTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   Task response = cloudTasksClient.runTask(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • runTaskCallable

        public final com.google.api.gax.rpc.UnaryCallable<RunTaskRequest,​Task> runTaskCallable()
        Forces a task to run now.

        When this method is called, Cloud Tasks will dispatch the task, even if the task is already running, the queue has reached its [RateLimits][google.cloud.tasks.v2.RateLimits] or is [PAUSED][google.cloud.tasks.v2.Queue.State.PAUSED].

        This command is meant to be used for manual debugging. For example, [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] can be used to retry a failed task after a fix has been made or to manually force a task to be dispatched now.

        The dispatched task is returned. That is, the task that is returned contains the [status][Task.status] after the task is dispatched but before the task is received by its target.

        If Cloud Tasks receives a successful response from the task's target, then the task will be deleted; otherwise the task's [schedule_time][google.cloud.tasks.v2.Task.schedule_time] will be reset to the time that [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] was called plus the retry delay specified in the queue's [RetryConfig][google.cloud.tasks.v2.RetryConfig].

        [RunTask][google.cloud.tasks.v2.CloudTasks.RunTask] returns [NOT_FOUND][google.rpc.Code.NOT_FOUND] when it is called on a task that has already succeeded or permanently failed.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   RunTaskRequest request =
       RunTaskRequest.newBuilder()
           .setName(TaskName.of("[PROJECT]", "[LOCATION]", "[QUEUE]", "[TASK]").toString())
           .build();
   ApiFuture<Task> future = cloudTasksClient.runTaskCallable().futureCall(request);
   // Do something.
   Task response = future.get();
 }

      • listLocations

        public final CloudTasksClient.ListLocationsPagedResponse listLocations​(com.google.cloud.location.ListLocationsRequest request)
        Lists information about the supported locations for this service.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Location element : cloudTasksClient.listLocations(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listLocationsPagedCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.ListLocationsRequest,​CloudTasksClient.ListLocationsPagedResponse> listLocationsPagedCallable()
        Lists information about the supported locations for this service.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Location> future =
       cloudTasksClient.listLocationsPagedCallable().futureCall(request);
   // Do something.
   for (Location element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

      • listLocationsCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.ListLocationsRequest,​com.google.cloud.location.ListLocationsResponse> listLocationsCallable()
        Lists information about the supported locations for this service.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListLocationsResponse response = cloudTasksClient.listLocationsCallable().call(request);
     for (Location element : response.getLocationsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

      • getLocation

        public final com.google.cloud.location.Location getLocation​(com.google.cloud.location.GetLocationRequest request)
        Gets information about a location.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   Location response = cloudTasksClient.getLocation(request);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getLocationCallable

        public final com.google.api.gax.rpc.UnaryCallable<com.google.cloud.location.GetLocationRequest,​com.google.cloud.location.Location> getLocationCallable()
        Gets information about a location.

        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 (CloudTasksClient cloudTasksClient = CloudTasksClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   ApiFuture<Location> future = cloudTasksClient.getLocationCallable().futureCall(request);
   // Do something.
   Location response = future.get();
 }

      • shutdown

        public void shutdown()
        Specified by:
        shutdown in interface com.google.api.gax.core.BackgroundResource

      • isShutdown

        public boolean isShutdown()
        Specified by:
        isShutdown in interface com.google.api.gax.core.BackgroundResource

      • isTerminated

        public boolean isTerminated()
        Specified by:
        isTerminated in interface com.google.api.gax.core.BackgroundResource

      • shutdownNow

        public void shutdownNow()
        Specified by:
        shutdownNow in interface com.google.api.gax.core.BackgroundResource