Example: Node

This example demonstrates how to deploy a simple Node.js executor on Faast using Docker Compose. We have provided an example folder on GitHub, containing the necessary initramfs and configuration file to work seamlessly with Docker Compose.

A few explanations

In the interest of simplifying the initial setup and demonstration, we have pre-compiled the necessary components and included them in the example folder available on GitHub.

• The provided initramfs has been built with essential elements already incorporated. It includes an agent responsible for facilitating the communication between the VM and the API via GRPC. Additionally, it comprises the Node.js SDK, enabling the immediate deployment and execution of Node.js functions.

• A configuration file for the Lambdo component is also provided, pre-set with the parameters needed for interfacing with the API. This pre-configuration accelerates the setup process, allowing you to dive directly into deploying and testing your functions.

This pre-configured setup is designed to lower the entry barrier, offering a straightforward way to explore Faast's functionality, especially for those new to the system or eager to quickly test a Node.js function deployment.

Let's run it

Clone the lambdo repository

You can clone the lambdo repository from GitHub using the following command:

git clone https://github.com/faast-rt/lambdo
cd lambdo

Start lambdo using Docker Compose

You can start lambdo using Docker Compose using the following command:

docker compose up

Execute your Node.js code

Lambdo will now expose an HTTP endpoint on port 3000. You can send a POST request to /run in order to execute your Node.js code.

The following example uses curl:

curl --location 'http://127.0.0.1:3000/run' \
  --header 'Content-Type: application/json' \
  --data '{
      "language": "NODE",
      "version": "1.0.0",
      "input": "",
      "code": [{
          "filename": "main.js",
          "content": "console.log('\''Hello World!'\'')"
      }]
  }'

You should see the following output:

{"status":0,"stdout":"Hello World\n","stderr":""}

You are now ready to execute your own Node.js code on Faast!