Topics - Get

Service:

Service Bus

API Version:

2024-01-01

Returns a description for the specified topic.

GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/topics/{topicName}?api-version=2024-01-01

URI Parameters

Name	In	Required	Type	Description
namespaceName	path	True	string	The namespace name
resourceGroupName	path	True	string	The name of the resource group. The name is case insensitive.
subscriptionId	path	True	string	Subscription credentials that uniquely identify a Microsoft Azure subscription. The subscription ID forms part of the URI for every service call.
topicName	path	True	string	The topic name.
api-version	query	True	string	The API version to use for this operation.

Responses

Name	Type	Description
200 OK	SBTopic	Topic description successfully retrieved.
Other Status Codes	ErrorResponse	ServiceBus error response describing why the operation failed.

Security

azure_auth

Azure Active Directory OAuth2 Flow

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name	Description
user_impersonation	impersonate your user account

Examples

TopicGet

Sample request

HTTP

GET https://management.azure.com/subscriptions/5f750a97-50d9-4e36-8081-c9ee4c0210d4/resourceGroups/ArunMonocle/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-1617/topics/sdk-Topics-5488?api-version=2024-01-01

dotnet

using Azure;
using Azure.ResourceManager;
using System;
using System.Threading.Tasks;
using Azure.Core;
using Azure.Identity;
using Azure.ResourceManager.ServiceBus;

// Generated from example definition: specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2024-01-01/examples/Topics/SBTopicGet.json
// this example is just showing the usage of "Topics_Get" operation, for the dependent resources, they will have to be created separately.

// get your azure access token, for more details of how Azure SDK get your access token, please refer to https://learn.microsoft.com/en-us/dotnet/azure/sdk/authentication?tabs=command-line
TokenCredential cred = new DefaultAzureCredential();
// authenticate your client
ArmClient client = new ArmClient(cred);

// this example assumes you already have this ServiceBusNamespaceResource created on azure
// for more information of creating ServiceBusNamespaceResource, please refer to the document of ServiceBusNamespaceResource
string subscriptionId = "5f750a97-50d9-4e36-8081-c9ee4c0210d4";
string resourceGroupName = "ArunMonocle";
string namespaceName = "sdk-Namespace-1617";
ResourceIdentifier serviceBusNamespaceResourceId = ServiceBusNamespaceResource.CreateResourceIdentifier(subscriptionId, resourceGroupName, namespaceName);
ServiceBusNamespaceResource serviceBusNamespace = client.GetServiceBusNamespaceResource(serviceBusNamespaceResourceId);

// get the collection of this ServiceBusTopicResource
ServiceBusTopicCollection collection = serviceBusNamespace.GetServiceBusTopics();

// invoke the operation
string topicName = "sdk-Topics-5488";
NullableResponse<ServiceBusTopicResource> response = await collection.GetIfExistsAsync(topicName);
ServiceBusTopicResource result = response.HasValue ? response.Value : null;

if (result == null)
{
    Console.WriteLine("Succeeded with null as result");
}
else
{
    // the variable result is a resource, you could call other operations on this instance as well
    // but just for demo, we get its data from this resource instance
    ServiceBusTopicData resourceData = result.Data;
    // for demo we just print out the id
    Console.WriteLine($"Succeeded on id: {resourceData.Id}");
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample response

Status code:

200

{
  "id": "/subscriptions/5f750a97-50d9-4e36-8081-c9ee4c0210d4/resourceGroups/ArunMonocle/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-1617/topics/sdk-Topics-5488",
  "name": "sdk-Topics-5488",
  "type": "Microsoft.ServiceBus/Namespaces/Topics",
  "properties": {
    "defaultMessageTimeToLive": "P10675199DT2H48M5.4775807S",
    "maxSizeInMegabytes": 10240,
    "maxMessageSizeInKilobytes": 10240,
    "requiresDuplicateDetection": false,
    "duplicateDetectionHistoryTimeWindow": "PT10M",
    "enableBatchedOperations": true,
    "sizeInBytes": 0,
    "status": "Active",
    "supportOrdering": true,
    "autoDeleteOnIdle": "P10675199DT2H48M5.4775807S",
    "enablePartitioning": false,
    "enableExpress": true,
    "createdAt": "2017-05-26T20:50:31.4442694Z",
    "updatedAt": "2017-05-26T20:52:32.2092264Z",
    "accessedAt": "0001-01-01T00:00:00Z",
    "subscriptionCount": 0
  }
}

Definitions

Name	Description
createdByType	The type of identity that created the resource.
EntityStatus	Entity status.
Error	The error object.
ErrorAdditionalInfo	The resource management error additional info.
ErrorResponse	The resource management error response.
MessageCountDetails	Message Count Details.
SBTopic	Description of topic resource.
systemData	Metadata pertaining to creation and last modification of the resource.

createdByType

Enumeration

The type of identity that created the resource.

Value	Description
Application
Key
ManagedIdentity
User

EntityStatus

Enumeration

Entity status.

Value	Description
Active
Creating
Deleting
Disabled
ReceiveDisabled
Renaming
Restoring
SendDisabled
Unknown

Error

Object

The error object.

Name	Type	Description
additionalInfo	ErrorAdditionalInfo[]	The error additional info.
code	string	The error code.
details	ErrorResponse[]	The error details.
message	string	The error message.
target	string	The error target.

ErrorAdditionalInfo

Object

The resource management error additional info.

Name	Type	Description
info	object	The additional info.
type	string	The additional info type.

ErrorResponse

Object

The resource management error response.

Name	Type	Description
error	Error	The error object.

MessageCountDetails

Object

Message Count Details.

Name	Type	Description
activeMessageCount	integer	Number of active messages in the queue, topic, or subscription.
deadLetterMessageCount	integer	Number of messages that are dead lettered.
scheduledMessageCount	integer	Number of scheduled messages.
transferDeadLetterMessageCount	integer	Number of messages transferred into dead letters.
transferMessageCount	integer	Number of messages transferred to another queue, topic, or subscription.

SBTopic

Object

Description of topic resource.

Name	Type	Description
id	string	Fully qualified resource ID for the resource. Ex - /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}
location	string	The geo-location where the resource lives
name	string	The name of the resource
properties.accessedAt	string	Last time the message was sent, or a request was received, for this topic.
properties.autoDeleteOnIdle	string	ISO 8601 timespan idle interval after which the topic is automatically deleted. The minimum duration is 5 minutes.
properties.countDetails	MessageCountDetails	Message count details
properties.createdAt	string	Exact time the message was created.
properties.defaultMessageTimeToLive	string	ISO 8601 Default message timespan to live value. This is the duration after which the message expires, starting from when the message is sent to Service Bus. This is the default value used when TimeToLive is not set on a message itself.
properties.duplicateDetectionHistoryTimeWindow	string	ISO8601 timespan structure that defines the duration of the duplicate detection history. The default value is 10 minutes.
properties.enableBatchedOperations	boolean	Value that indicates whether server-side batched operations are enabled.
properties.enableExpress	boolean	Value that indicates whether Express Entities are enabled. An express topic holds a message in memory temporarily before writing it to persistent storage.
properties.enablePartitioning	boolean	Value that indicates whether the topic to be partitioned across multiple message brokers is enabled.
properties.maxMessageSizeInKilobytes	integer	Maximum size (in KB) of the message payload that can be accepted by the topic. This property is only used in Premium today and default is 1024.
properties.maxSizeInMegabytes	integer	Maximum size of the topic in megabytes, which is the size of the memory allocated for the topic. Default is 1024.
properties.requiresDuplicateDetection	boolean	Value indicating if this topic requires duplicate detection.
properties.sizeInBytes	integer	Size of the topic, in bytes.
properties.status	EntityStatus	Enumerates the possible values for the status of a messaging entity.
properties.subscriptionCount	integer	Number of subscriptions.
properties.supportOrdering	boolean	Value that indicates whether the topic supports ordering.
properties.updatedAt	string	The exact time the message was updated.
systemData	systemData	The system meta data relating to this resource.
type	string	The type of the resource. E.g. "Microsoft.EventHub/Namespaces" or "Microsoft.EventHub/Namespaces/EventHubs"

systemData

Object

Metadata pertaining to creation and last modification of the resource.

Name	Type	Description
createdAt	string	The timestamp of resource creation (UTC).
createdBy	string	The identity that created the resource.
createdByType	createdByType	The type of identity that created the resource.
lastModifiedAt	string	The type of identity that last modified the resource.
lastModifiedBy	string	The identity that last modified the resource.
lastModifiedByType	createdByType	The type of identity that last modified the resource.