Cron

The Cron component can be used to schedule messages based on specific moments in time. It uses cron tabs to indicate when to send a message into the flow.

This component stays in a waiting state until a message is received. Once the component is running, jobs will start executing.

Configuration

Cron Jobs The list of jobs with their respective cron tabs, and the message they output.

Syntax: cron tab | data (only string supported) | comment

Examples: */5 * * * * *| ping - Will send the message ping every 5 seconds.

As Object Whether or not to send the output as an object, or as a raw string. If this is set to true a message in the format { message: "ping"} will be sent.

Cron tab:

*    *    *    *    *    *
┬    ┬    ┬    ┬    ┬    ┬
│    │    │    │    │    |
│    │    │    │    │    └ day of week (0 - 7) (0 or 7 is Sun)
│    │    │    │    └───── month (1 - 12)
│    │    │    └────────── day of month (1 - 31, L)
│    │    └─────────────── hour (0 - 23)
│    └──────────────────── minute (0 - 59)
└───────────────────────── second (0 - 59, optional)

Some examples:

tab	description
0 0 1 1 *	Run annually, at First of January at 00:00
0 0 1 * *	Run once a month, at 00:00 on the first day of the month
0 0 * * 0	Run once a week, at Sunday 00:00
0 0 * * *	Run once a day, at 00:00
0 * * * *	Run once an hour, at XX:00
*/5 * * * *	Run once every 5 minutes

Inputs

• Name: Input

  • Description: Any message that is sent to the Cron component will set it to an running state.

Outputs

• Name: Output

  • Examples:

    • ping if asObject is false.
    • { message: "ping" } if asObject is true.