Creating a Function Using a Template and Executing the Function¶
FunctionGraph provides multiple templates to automatically complete code and running environment configurations when you create a function, helping you quickly build applications. This section uses context-class-introduction as an example.
Prerequisites¶
Grant the FunctionGraph operation permissions to the user.
To perform the operations described in this section, ensure that you have the FunctionGraph FullAccess permissions, that is, all permissions for FunctionGraph. For more information, see Permissions Management.
Step 1: Create a Function¶
Log in to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
Click Create Function in the upper right corner and choose Select template.
Select the template shown in Figure 1 and click Configure.
Figure 1 Selecting a template¶
Set Function Name to context, select any agency from the Agency drop-down list, retain default values for other parameters, and click Create Function.
Templates: name of the selected template. To change the template, click Reselect on the right.
Region: The default value is used. You can select other regions.
Regions are geographic areas isolated from each other. Resources are region-specific and cannot be used across regions through internal network connections. For low network latency and quick resource access, select the nearest region.
Function Name: enter context.
Enterprise Project: The default value is default. You can select the created enterprise project.
Enterprise projects let you manage cloud resources and users by project.
Agency: By default, no agency is used. You can select an existing agency.
Specify an agency if you want to delegate FunctionGraph to access other cloud services, such as LTS and VPC.
Runtime: Select a runtime to compile the function. Default: Python 2.7. You can select another runtime.
Advanced Settings: Collect Logs is disabled by default. If it is enabled, function execution logs will be reported to Log Tank Service (LTS). You will be billed for log management on a pay-per-use basis.
Table 1 Parameters for configuring Collect Logs¶ Parameter
Description
Log Configuration
You can select Auto or Custom.
Auto: Use the default log group and log stream. Log groups prefixed with "functiongraph.log.group" are filtered out.
Custom: Select a custom log group and log stream. Log streams that are in the same enterprise project as your function.
Log Tag
You can use these tags to filter function logs in LTS. You can add 10 more tags.
Tag key/value: Enter a maximum of 64 characters. Only digits, letters, underscores (_), and hyphens (-) are allowed.
Note
If no agency is configured, the following message will be displayed when the function is triggered:
Failed to access other services because no temporary AK, SK, or token has been obtained. Please set an agency.
Figure 2 Setting basic information¶
Step 2: Test the Function¶
On the function details page, click Test. In the displayed dialog box, create a test event.
Select blank-template, set Event Name to test, and click Create.
Figure 3 Configuring a test event¶
Step 3: View the Execution Result¶
Click Test and view the execution result on the right.
Function Output: displays the return result of the function.
Log Output: displays the execution logs of the function.
Summary: displays key information of the logs.
Note
A maximum of 2 KB logs can be displayed. For more log information, see Querying Function Logs.