Build an email service with Liteflow

Today we will learn how to create and use a Liteflow service that sends emails using SendGrid.

Create the Liteflow Service

It's time to create our Liteflow application with its first service. Open a terminal and run the following commands:

npm I -g @liteflow/cli
liteflow init service-email-sendgrid-tuto
cd service-email-sendgrid-tuto
liteflow service:init services/email --template javascript

You will now have a new directory services/email with the boilerplate of a service.

Send emails through a task

Let's define the task we want to create in the liteflow.yml file (in your services/email directory).

Configure your service

This service will use Sendgrid to send emails and require the Sendgrid library and a Sendgrid API key. You can add the variable SENDGRID_API_KEY as env of your service.

The services also define a task called send responsible for sending an email. This task has the following inputs/outputs:

Inputs:

• from (String): the account to send the email from
• to (String): the recipient of the email
• subject (String): the subject of the email
• text (String): the text of the email

Outputs:

• status (Number): status of the sent email

With the configuration and the send task, your liteflow.yml should look like:

name: sendgrid-service
configuration:
  env:
    - SENDGRID_API_KEY=
tasks:
  send:
    inputs:
      from: { type: String }
      to: { type: String }
      subject: { type: String }
      text: { type: String }
    outputs:
      status: { type: Number }

Continue the tutorial here > https://blog.liteflow.com/2020/06/04/send-emails-with-sendgrid/