Lesson 1: Bootstrap a Headless App

First of all, you need a new headless app created with AIO CLI. This app only needs a simple action to test the cron job, so all other components are deselected. Follow this Creating your First App Builder Application

Now let's go to the action code at actions/generic/index.js to simplify what it does. We make it print the current execution time to logs and return it in the result.

Copy
const { Core } = require('@adobe/aio-sdk')

async function main (params) {
  const logger = Core.Logger('main', { level: 'info' })

  try {
    logger.info('Calling the main action')
    const currentTime = new Date()
    logger.info(`Current time is ${currentTime.toLocaleString()}.`)

    return {
      timeInMilliseconds: currentTime.getTime(),
      timeInString: currentTime.toLocaleString()
    }
  } catch (error) {
    logger.error(error)
    return { error }
  }
}

exports.main = main
Copied to your clipboard
const { Core } = require('@adobe/aio-sdk')

async function main (params) {
  const logger = Core.Logger('main', { level: 'info' })

  try {
    logger.info('Calling the main action')
    const currentTime = new Date()
    logger.info(`Current time is ${currentTime.toLocaleString()}.`)

    return {
      timeInMilliseconds: currentTime.getTime(),
      timeInString: currentTime.toLocaleString()
    }
  } catch (error) {
    logger.error(error)
    return { error }
  }
}

exports.main = main

Because the action is only invoked by the internal alarms, it does not need to be exposed as a web action. That would prevent the action to be accessed by unprivileged users. Your manifest file should look the same as below.

Copy
application:
  actions: actions
  web: web-src
  runtimeManifest:
    packages:
      my-app:
        license: Apache-2.0
        actions:
          generic:
            function: actions/generic/index.js
            web: 'yes'
            runtime: 'nodejs:14'
Copied to your clipboard
application:
  actions: actions
  web: web-src
  runtimeManifest:
    packages:
      my-app:
        license: Apache-2.0
        actions:
          generic:
            function: actions/generic/index.js
            web: 'yes'
            runtime: 'nodejs:14'

In order to test the action, you could execute aio app deploy in the VSCode terminal. Once the deployment is finished, run aio rt action invoke your-app-name/generic, and then verify its result and logs using aio rt activation get ID and aio rt activation logs ID (ID is available in the output of the invoke command earlier). Below is an extract of result from the activation info.

Last updated 5/21/2024

Was this helpful?

Yes

No