nodart

NodArt - The Art of Node.js

A complete framework
for creating microservices and
large-scale server-side applications for businesses

---

The framework adheres to the concept of "just install and use". Everything you need to run a server application:

1. MVC; OOP (TypeScript, ECMAScript 6)
2. ORM client, Working with databases (MySQL, PostgresSQL, SQLite, MSSQL, OracleDB, CockroachDB, Amazon Redshift)
3. Working with a session
4. Templating
5. Error and Exception handling
6. Working with a command line; Creation of custom commands
7. Routing
8. Custom events and states
9. Dependency injection
10. Observer pattern
11. Repository pattern
12. Module pattern

Everything of this is provided out of the hood. All that is needed for some of the above things to work is to specify the basic settings in the configuration file.

The framework provides a very flexible architecture, making it easy to extend and customize all of these things, up to and including completely changing the basic behavior by specifying class loaders and references in the same configuration file.

The framework is independent, thus it doesn't rely on other frameworks like Express.

---

APPLICATION CREATION, INITIALISATION AND START

System requirements:

• OS Linux or Windows
• Node.js >= v16.14.2

1. GIT

it downloads the current framework version's application with full usage examples.

git clone https://github.com/nodart-labs/nodart-app.git

2. CLI

it creates a base application structure from cli.

npx nodart create-app

it creates a microservice application file. Use flag "--js" when you are not using typescript in project.

npx nodart microapp --js[optional]

---

3. INITIALISATION AND START

You can launch microservice or monolithic apps, or you can combine them, depending on the requirements. In this article, you can read more about application architecture.

BASIC INITIALISATION:

import { App } from "nodart";

const config = require("./config");

/**
    Be aware that this fundamental initialization 
    automatically creates the necessary app files and folders.
    (database folder, controllers folder, models folder, 
    services folder, views folder and etc.)
*/

new App({ ...config }).init().then(async (app) => {
  const server = await app.serve(3000, "http", "127.0.0.1");

  // do anything on startup, for example:

  // configure server:
  server.timeout = 30000; // setting max timeout on requests

  // or create payload for all HTTP requests:
  app.service.setRequestPayload((req, res) => {});

  // or launch HTTP service:
  const http = app.service.http;

  http.get("url/path/with/:params", (scope) => {});
});

---

STARTING HTTP SERVICE

import { App } from "nodart";

const config = require("./config");

new App({ ...config }).start(3000).then(({ app, http, server }) => {
  // base HTTP processing:

  http.get("/path/:first/:second/:+optional_id?", ({ route, http }) => {
    const { first, second, optional_id } = route.params;

    const { httpQueryStringParam } = http.query;

    // sending template from views folder:
    http.respond.view("path/to/template/from/views/folder", { queryParam });

    // sending file:
    http.sendFile("absolute/path/to/file.png", "image/png");

    // sending response JSON:
    http.respond.data({ first, second, optional_id }, 200);
    // or
    http.send({ first, second, optional_id }, 200, "application/json");
    // or just:
    return { first, second, optional_id };

    // throwing HttpException. The message will be sent to user.
    http.throw(500, "some error occurred.");

    // throwing RuntimeException. The message will not be sent to user,
    // but shown in server logs.
    http.exit(500, "some error occurred.", { someData });
  });

  // fetching data from POST request:

  http.post("/", ({ http }) => {
    const { someData } = http.data;
  });

  // fetching data from POST miltipart/form-data:

  http.post("/", async ({ http }) => {
    const { fields, files } = await http.form.fetchFormData();

    const stat = http.form.stat("field_name");
  });

  // dealing with services and models:

  import { SampleService } from "./services/sample";
  import { SampleModel } from "./models/subfolder/sample";

  http.get("/", async ({ service, model }) => {
    const sampleService = service().sample as SampleService;
    const sampleModel = model().subfolder.sample as SampleModel;

    const users = await sampleModel.query.select().table("users");

    sampleService.scope.http.send({ users });
  });
});

// "./services/sample.ts"

import { Service } from "nodart";

export class SampleService extends Service {
  get orm() {
    return this.scope.app.service.db.orm; // or this.scope.app.get('orm').call()
  }
}

SPECIFYING LOADERS

You can change the basic behavior of class loaders by specifying in the base project configuration

import { App, ControllerLoader, nodart } from "nodart";

class ControllerLoaderOverride extends ControllerLoader {
  protected _pathSuffix = "Controller";
}

const config = <nodart.app.AppConfigInterface>{
  loaders: {
    controller: ControllerLoaderOverride,
  },
};

new App(config);

---

RELATION MODEL

An abstract class called RelationModel enhances the functionality of the standard query builder. The system by default use the well-liked Knex query builder: https://knexjs.org/guide/

Using pre-written database queries, RelationModel enables you to create query blanks and chain them together into a series of inquiries. In this manner, retrieving a list or a single object from the database does not require you to always develop new methods in the data model.

USAGE SAMPLE:

@/models/Book.ts:

import { RelationModel } from "nodart";

export interface IBook {
  id: number;
  author_id: number;
  name: string;
  meta_keywords: string;
  meta_description: string;
}

export class Book extends RelationModel {
  declare model: IBook;

  get table() {
    return "books";
  }

  static get table() {
    return "books";
  }

  statements = (query: this["query"]) => ({
    author: <T extends string>(author_id: number) =>
      query.where("author_id", author_id) as T extends "list"
        ? Promise<IBook[]>
        : Promise<IBook>,
  });
}

@/controllers/BooksController.ts:

import { Controller, nodart } from "nodart";
import { Book, IBook } from "@/models/Book";

const statuses = nodart.http.HTTP_STATUS;

export class BooksController extends Controller {
  model = {
    Book: {} as Book,
  };

  declare book: Book;

  init() {
    this.book = this.model.Book;
  }

  /**
   @returns: {Object<IBook>}
   */
  async get(id: number) {
    // Be aware to use the "result" property
    // at the end of the call chain.

    return await this.book.use.get({ id }).result;
  }

  /**
   @returns: {Array<IBook>}
   */
  async list(author_id: number) {
    // The "result" property is not required
    // after "on" property.

    return await this.book.use.list("id", "name").on.author(author_id);
  }

  async patch(id: number) {
    const { name } = this.http.data;
    const result = await this.book.use.set({ name }).at({ id }).result;

    return result ? { ok: true } : this.http.throw(statuses.NOT_FOUND);
  }

  async post() {
    const data = this.http.data as IBook;
    const result = await this.book.use.add(data).result; // Array<number>;

    return { ok: !!result?.[0] };
  }

  async delete(id: number) {
    const result = await this.book.use.delete({ id }).result;

    return { ok: !!result };
  }
}

---

DATA MUTABLE

nodart.mutable.MutableInterface is an interface that provides a property with methods to cast the source data to the desired data model.

USAGE SAMPLE:

@/models/Book.ts:

import { RelationModel, nodart } from "nodart";

export interface IBook {
  id: number;
  author_id: number;
  name: string;
  meta_keywords: string;
  meta_description: string;
}

export interface IBookAPI
  extends Omit<IBook, "meta_keywords" | "meta_description"> {
  meta: {
    description: string;
    keywords: string;
  };
}

export interface IBookMutable extends nodart.mutable.DataMutable {
  book(data: IBook): [Partial<IBookAPI>, (keyof IBook)[]];
}

/**
  RelationModel implements nodart.mutable.MutableInterface
*/
export class Book extends RelationModel {
  declare model: IBook;

  get table() {
    return "books";
  }

  static get table() {
    return "books";
  }

  readonly mutable: IBookMutable = {
    book: (data) => [
      // This data will be assigned to the source data:
      {
        meta: {
          description: data.meta_description,
          keywords: data.meta_keywords,
        },
      },
      // This optional part specifies which properties
      // will be excluded from the source data:
      ["meta_description", "meta_keywords"],
    ],
  };

  statements = (query: this["query"]) => ({
    author: <T extends string>(author_id: number) =>
      query.where("author_id", author_id) as T extends "list"
        ? Promise<IBook[]>
        : Promise<IBook>,
  });
}

@/controllers/BooksController.ts:

import { Controller } from "nodart";
import { Book } from "@/models/Book";

export class BooksController extends Controller {
  model = {
    Book: {} as Book,
  };

  declare book: Book;

  init() {
    this.book = this.model.Book;
  }

  /**
   @returns: {Object<IBookAPI>} -> {
      id: number;
      author_id: number;
      name: string;
      meta: { 
        description: string;
        keywords: string;
      }
    }
   */
  async get(id: number) {
    const data = await this.book.use.get({ id }).result;

    return this.book.mutate.get.book(data);
  }

  /**
   @returns: {Array<IBookAPI>}
   */
  async list(author_id: number) {
    const data = await this.book.use.list().on.author<"list">(author_id);

    return this.book.mutate.list.book(data);
  }
}

---

CREATION OF CUSTOM SERVER

new App({ ...config }).init().then(async (app) => {
  const server = await app.serve(3000, "https", "127.0.0.1", () => {
    const fs = require("fs");

    const ssl = {
      cert: fs.readFileSync("./localhost.crt"),
      key: fs.readFileSync("./localhost.key"),
    };

    return require("https").createServer(ssl);
  });
});

new App({ ...config })
  .start(3000, "http", "127.0.0.1", (app) => {
    return require("http").createServer((req, res) => {
      app.resolveHttpRequest(req, res);
    });
  })
  .then(({ app, http, server }) => {
    //...
  });

---

START UNDER DEVELOPMENT

npm run dev

START UNDER PRODUCTION

npm run start

---

BENCHMARKS

The framework is built on the premise that performance and functionality should be perfectly balanced. The performance of some well-known server-side frameworks is compared here.

Spoiler message: As you can see, the NodArt framework is not far behind the fastest Fastify, and in some aspects surpasses it and all other frameworks.

Environment:

• Computer: AMD Ryzen 5 4600H Radeon, 3000 MHz, 6 Cores, SSD, 16 Gb RAM
• Benchmarking tool: AutoCannon
• Benchmarking command:

autocannon -R 10000 http://localhost:3000

(10000 requests per second; Total connections/users: 10; Total time: 10 seconds)

1. Testing simple JSON response:

http.get("/", () => {
  return { hello: "world" };
});

Framework	Bytes/sec	Requests/sec
Fastify v4.0.0	1.91 MB	10183
NodArt v4.2.0	2.02 MB	10143
Express v4.18.2	1.94 MB	7683
Nest.js v9.0.0	1.61 MB	6395

2. Testing parametric route:

http.get("/test/:param1/:param2/:param3/:param4", ({ route }) => {
  const { param1, param2, param3, param4 } = route.params;
  return { param1, param2, param3, param4 };
});

Framework	Bytes/sec	Requests/sec
Fastify v4.0.0	2.27 MB	10143
NodArt v4.2.0	2.45 MB	10127
Express v4.18.2	2.17 MB	7531
Nest.js v9.0.0	1.8 MB	6239

3. Testing static file serve:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Title</title>
  </head>
  <body>
    <h1>Hello world!</h1>
  </body>
</html>

Framework	Bytes/sec	Requests/sec
NodArt v4.2.0	4.4 MB	7955
Fastify v4.0.0	2.32 MB	5295
Express v4.18.2	2 MB	4343
Nest.js v9.0.0	1.87 MB	4057

---

COMMAND LINE INTERFACE

System Commands:

npx nodart [command name] [command action optional] --[argument name optional] [argument value]

App Commands:

node cmd [command name] [command action optional] --[argument name optional] [argument value]

---

DATABASE MIGRATION CLI

Before making migrations you should insert database configuration options into "cmd/index.js" file

Creating and running a Single Migration

npx nodart migrate make --name migration-name

npx nodart migrate up | down

Creating and running the Group of Migrations in a single file

npx nodart migrate make-source --name source-name --migrations[optional] migration1 migration2 ...

npx nodart migrate source-up | source-down --name source-name --migrations[optional] migration1 migration2 ...

npx nodart migrate all-source-up | all-source-down --exclude[optional] excluded-migration-sourcename

Roll back the latest migration

npx nodart migrate rollback --all[optional]

Run all migrations that have not yet been run

npx nodart migrate latest

Retrieve and return the current migration version

npx nodart migrate version

Return list of completed and pending migrations

npx nodart migrate list

Forcibly unlock the migrations lock table, and ensure that there is only one row in it

npx nodart migrate unlock

---

DATABASE SEED CLI

Creates a new seed file, with the name of the seed file being added.

If the seed directory config is an array of paths, the seed file will be generated in the latest specified.

npx nodart seed make --name seed-name

npx nodart seed run

Creating and running the Group of Seeds in a single file

npx nodart seed make-source --name source-name --seeds[optional] seed1 seed2 ...

npx nodart seed source-run --name source-name --seeds[optional] seed1 seed2 ...

npx nodart seed all-source-run --exclude[optional] excluded-seed-sourcename

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