GeminiDB Mongo Trigger

Notes and Constraints

• Currently, GeminiDB Mongo triggers are available in CN North-Beijing4, CN East-Shanghai1, and AP-Singapore. You can check whether the trigger type is supported on the console.
• The valid payload size of a request body is 6 MB when a GeminiDB Mongo trigger is used.

Prerequisites

• Function and configuration:
  • You have created a function.
  • You have configured the GeminiDB agency permission for the function. For details about how to create an agency, see Configuring Agency Permissions.
  • You have enabled VPC access for the function. For details, see Configuring Networks.
• GeminiDB Mongo:
  • You have created a GeminiDB Mongo instance. For details, see Buying a Replica Set Instance.
  • You have configured the subnet permissions for the GeminiDB Mongo security group. For details, see .

Creating a GeminiDB Mongo 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. Configure the following parameters.

   Table 1 Parameters of a GeminiDB trigger

   Parameter	Description	Example Value
   Trigger Type	Mandatory. Select GeminiDB Mongo.	GeminiDB Mongo
   GeminiDB Mongo Instance	Mandatory. Select a created GeminiDB Mongo instance. If no instance is available, click Create Instance.	geminidb-fg
   Password	Mandatory. Enter the password of the GeminiDB Mongo instance administrator rwuser.	GeminiDB@123
   Database	Mandatory. Set the database name. Note that admin, local, and config are reserved database names and cannot be used here.	GeminiDB-test
   Collection	Mandatory. Enter the database collection name.	GeminiDB-set
   Batch Size	Mandatory. Enter the number of records read from the database in each batch. The value ranges from 1 to 10000.	100

5. Click OK.

Configuring a GeminiDB Mongo Event to Trigger the Function

1. Return to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
2. Click the name of the function to be configured. The function details page is displayed.
3. On the function details page, select a version.
4. On the Code tab page, click Test. The Configure Test Event dialog box is displayed.
5. Set the parameters described in Table 2 and click Save.

   Table 2 Test event information

   Parameter	Description
   Configure Test Event	You can choose to create a test event or edit an existing one. Use the default option Create new test event.
   Event Templates	Select GeminiDB Mongo.
   Event Name	The event name can contain 1 to 25 characters and must start with a letter and end with a letter or digit. Only letters, digits, underscores (_), and hyphens (-) are allowed. For example, Gemini-123test.
   Event data	The system automatically loads the built-in GeminiDB Mongo event template, which is used in this example without modifications.

6. Click Test. The function test result is displayed.

Helpful Links

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