Creating a Topic

Scenarios

A topic is a specified event to publish messages and subscribe to notifications. It serves as a message sending channel, where publishers and subscribers can interact with each other.

Creating a Topic

1. Log in to the management console.
2. In the upper left corner of the page, click and select the desired region and project.
3. Select Simple Message Notification under Application.

   The SMN console is displayed.

4. In the navigation pane on the left, choose Topic Management > Topics.

   The Topics page is displayed.

5. In the upper right corner, click Create Topic.
6. Enter a topic name and display name.

   Table 1 Parameter descriptions

   Parameter	Description
   Topic Name	Topic name, which: Contains only letters, digits, hyphens (-), and underscores (_) and must start with a letter or digit. Contains 1 to 255 characters. Must be unique and cannot be modified once the topic is created.
   Display Name	Message sender name, which can contain up to 192 bytes NOTE: After you specify a display name, the sender in email messages will be presented as Display name<username@example.com>. Otherwise, the sender will be username@example.com.
   Enterprise Project	Centrally manages cloud resources and members by project.
   Tag	A tag is a key-value pair. Tags identify cloud resources so that you can easily categorize and search for your resources. A key can contain up to 128 characters, and a value can contain up to 256 characters. The value can contain letters, digits, underscores (_), periods (.), colons (:), slashes (/), equal signs (=), plus signs (+), hyphens (-), and at signs (@). You can add up to 20 tags for each topic.

7. Click OK.

   The topic you created is displayed in the topic list. The system generates a topic URN, which is the unique resource identifier of the topic and cannot be changed.

8. Click the name of the topic to view its details, including the topic URN, display name and subscriptions.