Add Triggers to Your Functions

What is a Trigger?

A trigger acts as a bridge between events and your serverless functions. It provides a centralized way to manage event sources and automatically triggers function execution based on predefined rules. When a specific event occurs and meets the conditions defined by the trigger, the associated function is automatically executed. This enables an efficient event-driven architecture, allowing your functions to respond to various events without manual intervention.

Navigating to the Trigger Configuration Page

Before configuring a trigger, ensure you have created and configured an active CDN acceleration domain on the CDNetworks platform and have deployed your function.

There are two ways to access the trigger configuration page:

• Initial Access from Function Creation: After writing and testing your code in CloudIDE and completing the online grayscale deployment of your function, click Configure Triggers.

• Accessing from the Menu Bar: Under the Edge Cloud Apps menu, click Trigger Management to access the Function Trigger details page. Click Add to create a new CDN trigger configuration.

Setting Up a Trigger

1. On the trigger configuration page, select the domain you want to associate with the function and choose the function you have already created and deployed. A single domain can be associated with multiple functions, including custom functions you have written and pre-configured public functions provided by the CDNetworks platform.

Note:
The order in which functions are associated determines their priority of execution. Carefully plan the execution order to ensure your business logic operates as intended.

2. Carefully review your configuration, ensuring you have selected the correct domain and function.
3. Click Confirm to create the trigger. Trigger configurations usually take effect immediately, and your function will begin responding to events that match the trigger rules.

Notes

• Trigger Scope: Triggers only take effect on the associated domain. For example, if you configure a trigger to take effect on the www.example.com domain, only requests accessing www.example.com will trigger function execution.
• Domain Uniqueness: Each domain can be associated with only one trigger configuration. Once a trigger is created, its associated domain cannot be modified. When creating a new trigger, you cannot select a domain that is already associated with another trigger.
• Trigger Limit: A single trigger configuration can be associated with a maximum of 10 functions. If you need to associate more functions, please contact the CDNetworks technical support team.