Introduction

This is a minimal bzBond-server Microbond example. Use it to learn about and get started creating Microbonds.

Installation

Installation on macOS/Linux

On macOs/Linux use the following command to install this Microbond:

/var/www/bzbond-server/bin/install-microbond.sh bzmb-hello-world https://github.com/beezwax/bzbond-server-microbond-example

Installation on Windows Server

On Windows Server use the following command to install this Microbond:

powershell -File "C:\Program Files\bzBond-server\bin\install-microbond.ps1" bzmb-hello-world https://github.com/beezwax/bzbond-server-microbond-example

Microbond architecture

Basic Microbond architecture

A microbond must define two things:

1. An asynchronous function that will receive a fastify instance and fastify plugins options
2. Optional: A fastify plugin options object.

The function is in charge of defining all the custom routes the Microbond should handle. Below is a bare bones example:

async function bzmbHelloWorld(fastify) {
  fastify.get("/bzmb-hello-world", (req, res) => {
    return "Hello, world!";
  });
}

module.exports = { microbond: bzmbHelloWorld };

Note that this example skipped the options property as it's optional. The body of the function defines a GET route at /bzmb-hello-world, that simply returns the string "Hello, world!".

Microbond architecture: Adding schema

To define schema and ensure only requests with a valid body are executed, define a schema in JSON schema format and include it in your route function.

const mySchema = {
  body: {
    type: "object",
    required: ["foo"],
    properties: {
      foo: { type: "string", minLength: 1 },
      bar: { type: "array" },
    },
  },
};

async function bzmbHelloWorld(fastify) {
  fastify.post("/bzmb-hello-world", { schema: mySchema }, (req, res) => {
    const { foo, bar } = req.body;
    // ... do something with foo and bar
    return "Hello, world!";
  });
}

module.exports = { microbond: bzmbHelloWorld };

Note that we are defining a schema for a request body so we change our fastify route to POST as GET requests don't have bodies.

Microbonds are fastify plugins

bzBond-server runs on fastify, and Microbonds are fastify plugins. Full documentation on creating fastify plugins can be found here.