Scheduling Jobs From Rules

Rules can be combined with Jobs to create advanced automated processes within Hantera based on various events. For example, you might want to send an email to the customer when the Order is confirmed. With a Rule that triggers on an Order state change, this becomes trivial.

In the following example, we assume that we already have a Reactor that uses Mailtrap to send e-mails called mailtrap with method sendEmailFromTemplate. You can find this exact example in the Cookbook

The Rule effect used to schedule jobs is scheduleJob. Not all Rule Hooks support the scheduleJob effect. Refer to the Rule Runtime Hooks Reference for more details.

//order-confirmation.hrule
param input: OnOrderCommands
param templateUuid: text
param reactorId = 'mailtrap' // Default value 'mailtrap' but allow override

let sendOrderConfirmation = {
  effect = 'scheduleJob'
  reactorId = reactorId
  method = 'sendEmailTemplate'
  argument = {
    to = {
      email = input.order.invoiceAddress.email
      name = input.order.invoiceAddress.name
    }
    templateUuid = templateUuid
    templateVariables = {
      customer = {
        name = input.order.invoiceAddress.name
        address = {
          firstName = input.order.invoiceAddress.name
          street = input.order.invoiceAddress.addressLine1
          city = input.order.invoiceAddress.city
          state = input.order.invoiceAddress.state
          zip = input.order.invoiceAddress.postalCode
          country = input.order.invoiceAddress.countryCode
        }
      }
      order = {
        number = input.order.orderNumber
        items =
          input.order.deliveries
          select d => d.orderLines
          flatten
          select l => {
            name = l.description
            quantity = l.quantity
            price = l.unitPrice
          }
        isRush = false
        total = input.order.orderTotal
      }
    }
  }
}

from input match
  {
    before: {
      orderState: 'pending'
    }
    order: {
      orderState: 'confirmed'
    }
  } |> sendOrderConfirmation