Using an LTS Trigger

Prerequisites

• You have created a function on FunctionGraph. For details, see Creating and Initializing a Function.
• You have created a log group, for example, LogGroup1. For details, see section "Creating a Log Group" in the Log Tank Service User Guide.
• You have created a log stream, for example, LogStream1. For details, see section "Creating a Log Stream" in the Log Tank Service User Guide.

Creating an LTS Trigger

1. Log in to the FunctionGraph console, and choose Functions > Function List in the navigation pane.
2. Click the HelloWorld function.
3. Choose Configuration > Triggers and click Create Trigger.
4. 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.

5. Click OK.

Configuring an LTS Event to Trigger the Function

1. Log in to the FunctionGraph console, and choose Functions > Function List in the navigation pane.
2. Click the HelloWorld function.
3. On the function details page, click the Code tab and select Configure Test Event.
4. 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 Log Tank Service (LTS) and use the built-in 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.

   

   The event template is as follows:

   {
       "lts": {
           "data": "ewogICAgICAgICJsb2dzIjpbewogICAgICAgICAgICAgICAgIm1lc3NhZ2UiOiIyMDE4LTA2LTI2LzE4OjQwOjUzIFtJTkZdIFtjb25maWcuZ286NzJdIFN1Y2Nlc3NmdWxseSBsb2FkZWQgZ2VuZXJhbCBjb25maWd1cmF0aW9uIGZpbGVcXHJcXG4iLAogICAgICAgICAgICAgICAgInRpbWUiOjE1MzAwMDk2NTMwNTksCiAgICAgICAgICAgICAgICAiaG9zdF9uYW1lIjoiZWNzLXRlc3RhZ2VudC5ub3ZhbG9jYWwiLAogICAgICAgICAgICAgICAgImlwIjoiMTkyLjE2OC4xLjk4IiwKICAgICAgICAgICAgICAgICJwYXRoIjoidXNyL2xvY2FsL3RlbGVzY29wZS9sb2cvY29tbW9uLmxvZyIsCiAgICAgICAgICAgICAgICAibG9nX3VpZCI6IjY2M2Q2OTMwLTc5MmQtMTFlOC04YjA4LTI4NmVkNDg4Y2U3MCIsCiAgICAgICAgICAgICAgICAibGluZV9ubyI6NjE1CiAgICAgICAgICAgIH0sCiAgICAgICAgICAgIHsKICAgICAgICAgICAgICAgICJtZXNzYWdlIjoiMjAxOC0wNi0yNi8xODo0MDo1MyBbV1JOXSBbY29uZmlnLmdvOjgyXSBUaGUgcHJvamVjdElkIG9yIGluc3RhbmNlSWQgb2YgY29uZmlnLmpzb24gaXMgbm90IGNvbnNpc3RlbnQgd2l0aCBtZXRhZGF0YSwgdXNlIG1ldGFkYXRhLlxcbiIsCiAgICAgICAgICAgICAgICAidGltZSI6MTUzMDAwOTY1MzA1OSwKICAgICAgICAgICAgICAgICJob3N0X25hbWUiOiJlY3MtdGVzdGFnZW50Lm5vdmFsb2NhbCIsCiAgICAgICAgICAgICAgICAiaXAiOiIxOTIuMTY4LjEuOTgiLAogICAgICAgICAgICAgICAgInBhdGgiOiIvdXNyL2xvY2FsL3RlbGVzY29wZS9sb2cvY29tbW9uLmxvZyIsCiAgICAgICAgICAgICAgICAibG9nX3VpZCI6IjY2M2Q2OTMwLTc5MmQtMTFlOC04YjA5LTI4NmVkNDg4Y2U3MCIsCiAgICAgICAgICAgICAgICAibGluZV9ubyI6NjE2CiAgICAgICAgICAgIH0sCiAgICAgICAgICAgIHsKICAgICAgICAgICAgICAgICJtZXNzYWdlIjoiIEluIGNvbmYuanNvbiwgcHJvamVjdElkIGlzIFtdLCBpbnN0YW5jZUlkIGlzIFtdLiBNZXRhRGF0YSBpcyB7NDU0MzI5M2EtNWIyYy00NGM0LWI3YTAtZGUyMThmN2YyZmE2IDYyODBlMTcwYmQ5MzRmNjBhNGQ4NTFjZjVjYTA1MTI5ICB9XFxyXFxuIiwKICAgICAgICAgICAgICAgICJ0aW1lIjoxNTMwMDA5NjUzMDU5LAogICAgICAgICAgICAgICAgImhvc3RfbmFtZSI6ImVjcy10ZXN0YWdlbnQubm92YWxvY2FsIiwKICAgICAgICAgICAgICAgICJpcCI6IjE5Mi4xNjguMS45OCIsCiAgICAgICAgICAgICAgICAicGF0aCI6Ii91c3IvbG9jYWwvdGVsZXNjb3BlL2xvZy9jb21tb24ubG9nIiwKICAgICAgICAgICAgICAgICJsb2dfdWlkIjoiNjYzZDY5MzAtNzkyZC0xMWU4LThiMGEtMjg2ZWQ0ODhjZTcwIiwKICAgICAgICAgICAgICAgICJsaW5lX25vIjo2MTcKICAgICAgICAgICAgfQogICAgICAgICAgICBdLAogICAgICAgICJvd25lciI6ICI2MjgwZTE3MGJkOTM0ZjYwYTRkODUxY2Y1Y2EwNTEyOSIsCiAgICAgICAgImxvZ19ncm91cF9pZCI6ICI5N2E5ZDI4NC00NDQ4LTExZTgtOGZhNC0yODZlZDQ4OGNlNzAiLAogICAgICAgICJsb2dfdG9waWNfaWQiOiAiMWE5Njc1YTctNzg0ZC0xMWU4LTlmNzAtMjg2ZWQ0ODhjZTcwIgogICAgICAgIH0="
       }
   }

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