# timer-trigger-fc-event-java11 help documentation

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## Preliminary preparation

### Permission preparation

Using this item, verify that your operational account has the following product permissions/policies:


| Service/Business     | Functional Computing |
| -------------------- | -------------------- |
| Permissions/Policies | AliyunFCFullAccess   |

# Code & Preview

- [ :smiley_cat:source code](https://github.com/devsapp/)
- In order to successfully deploy this sample code, you need to provide the following parameters during the deployment process:
  - Region: You need to configure the region where your Function Compute service needs to be deployed through this parameter. The default value is cn-hangzhou (Hangzhou).
    - The geographic options available to you are:
      - cn-beijing (Beijing)
      - cn-hangzhou (Hangzhou)
      - cn-shanghai (Shanghai)
      - cn-qingdao (Qingdao)
      - cn-zhangjiakou (Zhangjiakou)
      - cn-huhehaote (Hohhot)
      - cn-shenzhen (Shenzhen)
      - cn-chengdu (Chengdu)
      - cn-hongkong (Hong Kong)
      - ap-southeast-1 (Singapore)
      - ap-southeast-2 (Sydney)
      - ap-southeast-3 (Kuala Lumpur)
      - ap-southeast-5 (Jakarta)
      - ap-northeast-1 (Tokyo)
      - eu-central-1 (Frankfurt)
      - eu-west-1 (London)
      - us-west-1 (Silicon Valley)
      - us-east-1 (Virginia)
      - ap-south-1 (Mumbai)
  - Service name: You need to name your Function Compute service. The service name can only contain letters, numbers, underscores and dashes. Cannot start with a number or a dash. The length is between 1-128, and the default value is timer-trigger-quick-start.
  - Function name: You need to name your function calculation function. The function name can only contain letters, numbers, underscores and dashes. Cannot start with a number or a dash. The length is between 1-64. The default is timer-trigger-event-function-java11.
  - Time trigger expression (cronExpression): You need to fill in the expression to trigger the function. The time trigger expression supports two settings: @every, cron expression. For example: @every 1m / @every 1h30m.
  - Input content (payLoad): represents the input content of the trigger event itself.

</codepre>

<deploy>

## Deployment & Experience

<appcenter>

- :fire: Through [Serverless Application Center](https://fcnext.console.aliyun.com/applications/create?template=timer-trigger-fc-event-java11),
   [![Deploy with Severless Devs](https://img.alicdn.com/imgextra/i1/O1CN01w5RFbX1v45s8TIXPz_!!6000000006118-55-tps-95-28.svg)](https://fcnext.console.aliyun. com/applications/create?template=timer-trigger-fc-event-java11) the application.

</appcenter>

- Deploy via [Serverless Devs Cli](https://www.serverless-devs.com/serverless-devs/install):

  - [Install Serverless Devs Cli Developer Tools](https://www.serverless-devs.com/serverless-devs/install), and perform [Authorization Information Configuration](https://www.serverless-devs.com/ fc/config);
  - Initialize the project: `s init timer-trigger-fc-event-java11 -d timer-trigger-fc-event-java11`
  - Fill in the parameters described in the above modules
  - Enter the project and deploy the project: `cd timer-trigger-fc-event-java11 && s deploy -y`
- local debugging
  - Enter the application project project and execute the following command: `s invoke --event-file event-example/timer-fc-sample.json`.
  - You can view the logs and results after the simulated event triggers the function.

```bash
========= FC invoke Logs begin =========
FC Invoke Start RequestId: 7564db25-615e-4952-845a-9f923c33bc6b
[Name] Register [com.aliyun.serverless.runtime.classloader.FunctionClassLoader@58372a00] as [com.aliyun.serverless.runtime.classloader.FunctionClassLoader@com.aliyun.serverless.runtime.classloader.FunctionClassLoader@/code/HelloFCJava- 1.0-SNAPSHOT.jar/code/original-HelloFCJava-1.0-SNAPSHOT.jar]: hash [d4d9f0d4] (normal mode)
2022-08-03 13:39:30.816 [INFO] [7564db25-615e-4952-845a-9f923c33bc6b] triggerTime: 2022-07-29T10:02:58Z
2022-08-03 13:39:30.816 [INFO] [7564db25-615e-4952-845a-9f923c33bc6b] triggerName: TestTimer
2022-08-03 13:39:30.817 [INFO] [7564db25-615e-4952-845a-9f923c33bc6b] payload: TestPayload
FC Invoke End RequestId: 7564db25-615e-4952-845a-9f923c33bc6b

Duration: 222.05 ms, Billed Duration: 223 ms, Memory Size: 128 MB, Max Memory Used: 82.52 MB
========= FC invoke Logs end =========

FC Invoke instanceId: c-62ea7a92-1ae386bb6d88454b9f58

FC Invoke Result:
Timer Payload: TestPayload


End of method: invoke
````



- End-to-end testing

  - Log in to the Function Compute console, find the function you just deployed, and view the `call log` (if the log is not activated, click one-click activation), and you can view that the function trigger log is triggered and printed at the corresponding time interval.

  The log is as follows:

  ```bash
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:22FC Invoke Start RequestId: c7439fac-9c76-45f3-98e6-ae535f0d5e11
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:22[Name] Register [com.aliyun.serverless.runtime.classloader.FunctionClassLoader@58372a00] as [com.aliyun.serverless.runtime.classloader.FunctionClassLoader@com.aliyun .serverless.runtime.classloader.FunctionClassLoader@/code/HelloFCJava-1.0-SNAPSHOT.jar/code/original-HelloFCJava-1.0-SNAPSHOT.jar]: hash [d4d9f0d4] (normal mode)
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:222022-08-03 13:43:22.568 [INFO] [c7439fac-9c76-45f3-98e6-ae535f0d5e11] triggerTime: 2022-08-03T1Z: 2022-08-03
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:222022-08-03 13:43:22.568 [INFO] [c7439fac-9c76-45f3-98e6-ae535f0d5e11] triggerName: timer
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:222022-08-03 13:43:22.568 [INFO] [c7439fac-9c76-45f3-98e6-ae535f0d5e11] payload: TestPayload
  c-62ea7b02-22d488e6b66545a7b1d32022-08-03 21:43:22FC Invoke End RequestId

</deploy>

<appdetail id="flushContent">

# application details



This application is only used for learning and reference. You can carry out secondary development and improvement based on this project to realize your own business logic.



</appdetail>

<devgroup>

## Developer Community

If you have feedback about bugs or future expectations, you can give feedback and exchange in [Serverless Devs repo Issues](https://github.com/serverless-devs/serverless-devs/issues). If you want to join our discussion group or keep up to date with the latest developments in FC components, you can do so through the following channels:

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</devgroup>