Using an LTS Trigger
For details about the timer event source, see Supported Event Sources.
Prerequisites
- You have created a function. For details, see Creating a Function from Scratch.
- You have created an agency with the LTS FullAccess permission. For details about how to create an agency, see Configuring Agency Permissions.
- You have created a log group, for example, LogGroup1. For details, see section "Creating a Log Group".
- You have created a log stream, for example, LogTopic1. For details, see section "Creating a Log Stream".
- You have installed and configured an agent for collecting logs from servers, such as ECSs, to a specified log group. For details, see Installing the ICAgent.
Creating an LTS Trigger
- Log in to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
- Click the function to be configured to go to the function details page.
- Choose Configuration > Triggers and click Create Trigger.
Figure 1 Creating a trigger
- Set the following parameters:
- Trigger Type: Select Log Tank Service (LTS).
- Log Group: Select a log group, for example, LogGroup1.
- Log Stream: Select a log stream, for example, LogStream1.
- Click OK.
Configuring an LTS Event to Trigger the Function
![](https://support.huaweicloud.com/eu/usermanual-functiongraph/public_sys-resources/note_3.0-en-us.png)
When the size of an LTS event message exceeds 75 KB, it will be split into multiple messages by 75 KB to trigger the function.
- Return to the FunctionGraph console. In the navigation pane, choose Functions > Function List.
- Click the function to be configured to go to the function details page.
- On the function details page, select a version.
- On the Code tab page, click Test. The Configure Test Event dialog box is displayed.
- Set the parameters described in Table 1 and click Save.
Table 1 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 Template
Select lts-event-template.
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, lts-123test.
Event data
The system automatically loads the built-in LTS event template, which is used in this example without modifications.
- Click Test. The function test result is displayed.
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