jsonapi-fastify

Installation

npm install jsonapi-fastify

About

Inspired by projects such as jagql-framework and jsonapi-server, jsonapi-fastify allows developers to stand up a {json:api} compliant API server quickly and easily. As the name implies, jsonapi-fastify uses fastify to handle request routing and configuration.

Motivation / Justification / Rationale

This framework solves the challenges of json:api without coupling us to any one ORM solution. Every other module out there is either tightly coupled to a database implementation, tracking an old version of the json:api spec, or is merely a helper library for a small feature. If you're building an API and your use case only involves reading and writing to a data store... well count yourself lucky. For everyone else, this framework provides the flexibility to provide a complex API without being confined to any one technology.

A config driven approach to building an API enables:

• [x] Enforced json:api responses
• [ ] Automatic GraphQL schema generation (coming soon)
• [x] Request validation
• [x] Payload validation
• [x] Automatic documentation generation
• [x] Automatic inclusions
• [x] Automatic routing
• [x] Automatic handling of relationships

Ultimately, the only things users of this framework need to care about are:

• What are your resources called
• What properties yours resources have
• For each resource, implement a handler to:
  • create a resource
  • delete a resource
  • search for multiple resources
  • find a specific resource
  • update a specific resource

Handlers

• memory-handler - an in-memory data store to enable rapid prototyping. This ships as a part of jsonapi-fastify and powers the core test suite.
• resource-handler - a database agnostic handler that allows users to fully customize handler behavior. Useful for resources that do not stem from stores with CRUD interfaces or are composed from multiple sources.

Full documentation

• Suggested Project Structure
• Configuring jsonapi-fastify
• Automatic OpenAPI Generation
• Defining Resources
• Foreign Key Relations
• Resource Handlers

Quick Start: Server

const { jsonapiFastify, define, MemoryHandler } = require("jsonapi-fastify");
const { nanoid } = require("nanoid");

const server = jsonapiFastify({
  openapi: {
    info: {
      version: "1.0.0",
      title: "test server",
      description: "a jsonapi server",
      contact: {
        url: "https://jsonapi.org",
        email: "[email protected]",
      },
      license: {
        name: "MIT",
        url: "https://jsonapi.org/license",
      },
    },
  },
  definitions: [
    define((schema) => ({
      resource: "people",
      idGenerator: () => nanoid(),
      handler: MemoryHandler(),
      fields: {
        firstname: schema.attribute(),
        lastname: schema.attribute(),
        articles: schema.belongsToOne({
          resource: "articles",
          as: "author",
        }),
      },
      examples: [
        {
          id: "42",
          type: "people",
          firstname: "John",
          lastname: "Doe",
        },
        {
          id: "24",
          type: "people",
          firstname: "Jane",
          lastname: "Doe",
        },
        {
          id: "22",
          type: "people",
          firstname: "Billy",
          lastname: "Idol",
        },
      ],
      defaultPageSize: 100,
    })),
  ],
});

server.listen(3000, (err, address) => {
  if (err) {
    console.error(err);
  } else {
    console.log(`Ready at address ${address}!`);
  }
});

Quick Start: Serverless (AWS Lambda)

# serverless.yml
provider:
  name: aws
  stage: dev
functions:
  handler: src/handler.main
  environment:
    STAGE: ${self:provider.stage}
  events:
    - http:
        method: any
        path: api/{proxy+}

// src/handler.js

import awsLambdaFastify from "aws-lambda-fastify";
import { jsonapiFastify, define, MemoryHandler } from "jsonapi-fastify";
import { nanoid } from "nanoid";

const app = jsonapiFastify({
  urlPrefixAlias: `https://api.example.com/${process.env.STAGE}`,
  prefix: "/api",
  openapi: {
    info: {
      version: "1.0.0",
      title: "test server",
      description: "a jsonapi server",
      contact: {
        url: "https://jsonapi.org",
        email: "[email protected]",
      },
      license: {
        name: "MIT",
        url: "https://jsonapi.org/license",
      },
    },
  },
  definitions: [
    define((schema) => ({
      resource: "people",
      idGenerator: () => nanoid(),
      handler: MemoryHandler(),
      fields: {
        firstname: schema.attribute({
          description: "The person's first name",
          type: (z) => z.string(),
        }),
        lastname: schema.attribute({
          description: "The person's last name",
          type: (z) => z.string(),
        }),
        articles: schema.belongsToOne({
          resource: "articles",
          as: "author",
        }),
      },
      examples: [
        {
          id: "42",
          type: "people",
          firstname: "John",
          lastname: "Doe",
        },
      ],
      defaultPageSize: 100,
    })),
  ],
});

export const main = awsLambdaFastify(app);