Simple Message Notification (SMN) Trigger

Video Tutorial

This video shows how to use an SMN trigger to trigger a function execution.

Notes and Constraints

• SMN triggers are supported in all regions except AP-Jakarta, ME-Riyadh, and AF-Johannesburg. You can check whether the trigger type is supported on the console.
• SMN triggers cannot be disabled and can only be deleted.

Prerequisites

• You have created a function.
• You have created an SMN topic, for example, smn-test. For details, see Creating a Topic.

Creating an SMN Trigger

1. Log in to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
2. Click the function to be configured to go to the function details page.
3. Choose Configuration > Triggers and click Create Trigger.
   Figure 1 Creating a trigger
   

4. Set the following parameters:
   • Trigger Type: Select Simple Message Notification (SMN).
   • Topic Name: Select a topic, for example, smn-test.

5. Click OK.
   

   After the SMN trigger is created, a subscription is generated for the corresponding topic on the SMN console.

Publishing a Message to Trigger the Function

On the SMN console, publish a message to the smn-test topic. For details, see Publishing a Text Message. After the message is published, the function is automatically triggered.

Table 1 describes the parameters required for publishing a message.

Viewing the Execution Result

1. Return to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
2. Click a function to go to the function details page.
3. Choose Monitoring > Logs to query function running logs.

Helpful Links

Manage function triggers through APIs. For details, see Function Trigger APIs.