This document outlines the implementation of a Node.js microservice using MongoDB to manage a movie database. It includes various functions for retrieving all movies, getting movies by ID, fetching recent movie premiers, and handling server startup and shutdown. Additionally, it contains test scripts for validating the functionality of the repository and API endpoints.

1. Node.js e
MongoDB
http://www.luiztools.com.br

2. MongoDB - Movies
Server - Movies
Api - Movies
Index - Movies
CRONOGRAMA

3. MongoDB -
Movies

4. MongoDB - Movies
nano /cinema-microservice/movies-
service/src/repository/repository.js
nano /cinema-microservice/movies-
service/src/repository/repository.test.js
Repositório

5. MongoDB - Movies
const mongodb = require("../config/mongodb");
function getAllMovies(callback){
mongodb.connect((err, db) => {
db.collection("movies").find().toArray(callback);
})
}
repository.js

6. MongoDB - Movies
function getMovieById(id, callback){
mongodb.connect((err, db) => {
db.collection("movies").findOne({_id:
require("mongodb").ObjectId(id)}, callback);
});
}
repository.js

7. MongoDB - Movies
function getMoviePremiers(callback){
var monthAgo = new Date();
monthAgo.setMonth(monthAgo.getMonth() - 1);
monthAgo.setHours(0, 0, 0);
monthAgo.setMilliseconds(0);
mongodb.connect((err, db) => {
db.collection("movies").find({ dataLancamento: {
$gte: monthAgo } }).toArray(callback);
});
}
repository.js

8. MongoDB - Movies
function disconnect(){
return mongodb.disconnect();
}
module.exports = { getAllMovies, getMovieById,
getMoviePremiers, disconnect }
repository.js

9. MongoDB - Movies
const test = require('tape');
const repository = require('./repository');
function runTests(){
var id = null;
//tests here
}
module.exports = { runTests }
repository.test.js

10. MongoDB - Movies
var id = null;
test('Repository GetAllMovies', (t) => {
repository.getAllMovies((err, movies) => {
if(movies && movies.length > 0) id =
movies[0]._id;
t.assert(!err && movies && movies.length > 0,
"All Movies Returned");
t.end();
});
})
repository.test.js

11. MongoDB - Movies
test('Repository GetMovieById', (t) => {
if(!id) {
t.assert(false, "Movie by Id Returned");
t.end();
return;
}
repository.getMovieById(id, (err, movie) => {
t.assert(!err && movie, "Movie by Id
Returned");
t.end();
});
})
repository.test.js

12. MongoDB - Movies
test('Repository GetMoviePremiers', (t) => {
repository.getMoviePremiers((err, movies) => {
t.assert(!err && movies && movies.length > 0,
"Movie Premiers Returned");
t.end();
});
})
repository.test.js

13. MongoDB - Movies
test('Repository Disconnect', (t) => {
t.assert(repository.disconnect(), "Disconnect
Ok");
t.end();
})
repository.test.js

14. MongoDB - Movies
require("dotenv-safe").load();
require("./config/mongodb.test").runTests();
require("./repository/repository.test").runTests();
index.test.js

15. MongoDB - Movies

16. Server -
Movies

17. Server - Movies
nano /cinema-microservice/movies-
service/src/server/server.js
const express = require('express');
const morgan = require('morgan');
const helmet = require('helmet');
var server = null;
server.js

18. Server - Movies
function start(api, repository, callback){
const app = express();
app.use(morgan('dev'));
app.use(helmet());
app.use((err, req, res, next) => {
callback(new Error('Something went wrong!, err:' +
err), null);
res.status(500).send('Something went wrong!');
})
api(app, repository);
server = app.listen(parseInt(process.env.PORT), () =>
callback(null, server));
}
server.js

19. Server - Movies
function stop(){
if(server) server.close();
return true;
}
module.exports = { start, stop }
server.js

20. Server - Movies
nano /cinema-microservice/movies-
service/src/server/server.test.js
server.test.js

21. Server - Movies
const test = require('tape');
const server = require('./server');
function apiMock(app, repo){
console.log("do nothing");
}
function runTests(){
//tests here
}
module.exports = { runTests }
server.test.js

22. Server - Movies
test('Server Start', (t) => {
server.start(apiMock, null, (err, srv) => {
t.assert(!err && srv, "Server started");
t.end();
});
})
test('Server Stop', (t) => {
t.assert(server.stop(), "Server stopped");
t.end();
})
server.test.js

23. Tape

24. API -
Movies

25. API - Movies
nano /cinema-microservice/movies-
service/src/api/movies.js
movies.js

26. API - Movies
module.exports = (app, repository) => {
app.get('/movies', (req, res, next) => {
repository.getAllMovies((err, movies) => {
if(err) return next(err);
res.json(movies);
});
})
movies.js

27. API - Movies
app.get('/movies/premieres', (req, res, next) => {
repository.getMoviePremiers((err, movies) => {
if(err) return next(err);
res.json(movies)
});
})
movies.js

28. API - Movies
app.get('/movies/:id', (req, res, next) => {
repository.getMovieById(req.params.id, (err, movie)
=> {
if(err) return next(err);
res.json(movie)
});
})
}
movies.js

29. Server - Movies
npm install supertest
nano /cinema-microservice/movies-
service/src/api/movies.test.js
movies.test.js

30. Server - Movies
npm install supertest
nano /cinema-microservice/movies-
service/src/api/movies.test.js
const test = require('tape');
const supertest = require('supertest');
const movies = require('./movies');
const server = require("../server/server");
const repository = require("../repository/repository");
movies.test.js

31. Server - Movies
function runTests(){
var app = null;
server.start(movies, repository, (err, app) => {
//tests here
server.stop();
})
}
module.exports = { runTests }
movies.test.js

32. Server - Movies
var id = null;
test('GET /movies', (t) => {
supertest(app)
.get('/movies')
.expect('Content-Type', /json/)
.expect(200)
.end((err, res) =>{
if(res.body && res.body.length > 0)
id = res.body[0]._id;
t.assert(res.body && res.body.length > 0,
"All Movies returned")
t.end()
})
})
movies.test.js

33. Server - Movies
test('GET /movies/:id', (t) => {
if(!id) {
t.assert(false, "Movie by Id Returned");
t.end();
return;
}
supertest(app)
.get('/movies/' + id)
.expect('Content-Type', /json/)
.expect(200)
.end((err, res) =>{
t.assert(res.body, "Movies By Idreturned")
t.end()
})
})
movies.test.js

34. Server - Movies
test('GET /movies/premieres', (t) => {
supertest(app)
.get('/movies/premieres')
.expect('Content-Type', /json/)
.expect(200)
.end((err, res) =>{
t.assert(res.body && res.body.length
> 0, "Premiere Movies returned")
t.end()
})
})
movies.test.js

35. Server - Movies

36. Index -
Movies

37. Index - Movies
nano /cinema-microservice/movies-service/src/index.js
require("dotenv-safe").load();
const movies = require('./api/movies');
const server = require("./server/server");
const repository = require("./repository/repository");
server.start(movies, repository, (err, app) => {
console.log("just started");
});
index.js

38. Index - Movies

39. Dúvidas?

40. Exercícios

41. 1 Adicione busca por nome no microservice
2 Adicione paginação no getAllMovies
3 Adicione o restante do CRUD ao microservice

42. Obrigado!