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@jakobmattsson
Started out doing consulting
3 startups:
Recruiting
Advertising
Feedback
2 000 000 000 writes/day!
Back to square one
Writing RESTful
web services
using Node.js
Comparison
Rocket science
Product demo
Silver bullet
Comparison
Rocket science
Product demo
Silver bullet
NOT
What is it then?
Imagination
Quantity
Bottom up
Principles
Also... CoffeeScript
Node.js
Node.js is a platform built on Chrome's
JavaScript runtime for easily building fast,
scalable network applications.
Node.js uses an event-driven, non-blocking I/O
model that makes it lightweight and efficient,
perfect for data-intensive real-time applications
that run across distributed devices.
Node.js is a platform built on Chrome's
JavaScript runtime for easily building fast,
scalable network applications.
Node.js uses an event-driven, non-blocking I/O
model that makes it lightweight and efficient,
perfect for data-intensive real-time applications
that run across distributed devices.
fs = require('fs')
fs.readFile 'meaning_of_life.txt', 'utf-8', (err, data) ->
console.log(data)
console.log('end')
end
42
Several protocols,
including TCP and HTTP,
are built in to node.
http = require('http')
onRequest = (req, res) ->
res.writeHead(200, { 'Content-Type': 'text/plain' })
res.end('Hello Worldn')
http.createServer(onRequest).listen(1337)
npm
npm is a package manager for node.
You can use it to install and publish your node programs.
”It manages dependencies and does other cool stuff.”
npm install underscore
_ = require('underscore')
numbers = _.range(1, 10)
console.log(_.last(numbers))
Connect
Connect is a midleware framework for node.
It’s shipping with over 18 bundled middleware.
It has a rich selection of 3rd-party middleware.
npm install connect
connect = require('connect')
app = connect()
app.listen(3000)
// last line equivalent to
// http.createServer(app).listen(3000);
connect = require('connect')
app = connect()
app.use connect.basicAuth (user, pass) ->
return user == 'jakob' && pass == 'fdc13'
app.use (req, res) ->
res.writeHead(200, { 'Content-Type': 'text/plain' })
res.end('Hello Worldn')
app.listen(3000)
logger
csrf
compress
basicAuth
bodyParser
json
urlencoded
multipart
cookieParser
session
cookieSession
methodOverride
responseTime
staticCache
static
directory
vhost
favicon
limit
query
errorHandler
Request logger with custom format support
Cross-site request forgery protection
Gzip compression middleware
Basic http authentication
Extensible request body parser
Application/json parser
Application/x-www-form-urlencoded parser
Multipart/form-data parser
Cookie parser
Session management support with bundled MemoryStore
Cookie-based session support
Faux HTTP method support
Calculates response-time and exposes via X-Response-Time
Memory cache layer for the static() middleware
Streaming static file server supporting Range and more
Directory listing middleware
Virtual host sub-domain mapping middleware
Efficient favicon server (with default icon)
Limit the bytesize of request bodies
Automatic querystring parser, populating req.query
Flexible error handler
Express
High performance
high class web development
for Node.js
npm install express
express = require('express')
app = express.createServer()
app.get '/', (req, res) ->
res.send('Hello World')
app.get '/users/:id', (req, res) ->
res.send('user ' + req.params.id)
app.listen(3000)
express = require('express')
app = express.createServer()
before1 = (req, res, next) ->
req.foo = 'bar'
next()
before2 = (req, res, next) ->
res.header('X-Time', new Date().getTime())
next()
app.get '/', before1, (req, res) ->
res.send('Hello World')
app.get '/users/:id', [before1, before2], (req, res) ->
console.log(req.foo)
res.send('user ' + req.params.id)
app.listen(3000)
Data storage
But which one?
Schemaless is a lie
Mongoose
Mongoose is a MongoDB object modeling tool
designed to work in an asynchronous environment.
npm install mongoose
mongoose = require 'mongoose'
mongoose.connect 'mongodb://localhost/tamblr'
model = (name, schema) ->
mongoose.model name, new mongoose.Schema schema,
strict: true
users = model 'users'
name:
type: String
default: ''
bio:
type: String
default: 'IE6-lover'
age:
type: Number
default: null
blogs = model 'blogs'
name:
type: String
default: ''
description:
type: String
default: ''
users:
type: ObjectId
ref: 'users'
posts = model 'posts'
title:
type: String
default: ''
body:
type: String
default: ''
published:
type: Date
blogs:
type: ObjectId
ref: 'blogs'
list = (model, callback) ->
model.find {}, callback
get = (model, id, callback) ->
model.findById id, callback
del = (model, id, callback) ->
model.remove { _id: id }, callback
put = (model, id, data, callback) ->
model.update { _id: id }, data, { multi: false }, callback
post = (model, data, callback) ->
new model(data).save callback
app.get '/users/:id', (req, res) ->
get users, req.params.id, (err, data) ->
res.json data
copy-paste!
POST /users
GET /users
GET /users/42
DELETE /users/42
PUT /users/42
POST /blogs
GET /blogs
GET /blogs/42
DELETE /blogs/42
PUT /blogs/42
POST /posts
GET /posts
GET /posts/42
DELETE /posts/42
PUT /posts/42
or should we?
models = [users, blogs, posts]
Object.keys(models).forEach (modelName) ->
app.get "/#{modelName}", (req, res) ->
list models[modelName], (err, data) ->
res.json data
app.get "/#{modelName}/:id", (req, res) ->
get models[modelName], req.params.id, (err, data) ->
res.json data
app.post "/#{modelName}", (req, res) ->
post models[modelName], req.body, (err, data) ->
res.json data
app.del "/#{modelName}/:id", (req, res) ->
del models[modelName], req.parmas.id, (err, count) ->
res.json { count: count }
app.put "/#{modelName}/:id", (req, res) ->
put models[modelName], req.params.id, req.body, (err, count) ->
res.json { count: count }
POST /users
GET /users
GET /users/42
DELETE /users/42
PUT /users/42
POST /blogs
GET /blogs
GET /blogs/42
DELETE /blogs/42
PUT /blogs/42
POST /posts
GET /posts
GET /posts/42
DELETE /posts/42
PUT /posts/42
But what about the relations/associations?
POST /users/42/blogs
GET /users/42/blogs
POST /blogs/42/posts
GET /blogs/42/posts
paths = models[modelName].schema.paths
owners = Object.keys(paths).filter (p) ->
paths[p].options.type == ObjectId &&
typeof paths[p].options.ref == 'string'
.map (x) -> paths[x].options.ref
owners.forEach (owner) ->
app.get "/#{owner}/:id/#{name}", (req, res) ->
listSub models[name], owner, req.params.id, (err, data) ->
res.json data
app.post "/#{owner}/:id/#{name}", (req, res) ->
postSub models[name], req.body, owner, req.params.id, (err, data) ->
res.json data
POST /users/42/blogs
GET /users/42/blogs
POST /blogs/42/posts
GET /blogs/42/posts
Keep on generating!
Authentication
npm install passport
npm install passport-local
passport = require('passport')
passportLocal = require('passport-local')
passport.use new passportLocal.Strategy (user, pass, done) ->
findUserPlz { username: user, password: pass }, (err, user) ->
done(err, user)
app.use(passport.initialize())
app.use(passport.authenticate('local'))
npm install passport-twitter
passport = require('passport')
twitter = require('passport-twitter')
keys = {
consumerKey: TWITTER_CONSUMER_KEY
consumerSecret: TWITTER_CONSUMER_SECRET
callbackURL: "http://127.0.0.1:3000/auth/twitter/callback"
}
passport.use new twitter.Strategy keys, (t, ts, profile, done) ->
findOrCreateUserPlz { twitterId: profile.id }, (err, user) ->
done(err, user)
app.use(passport.initialize())
app.use(passport.authenticate('twitter'))
Part 2
Convention
ALL CHARACTERS AND
EVENTS IN THIS SHOW--
EVENT THOSE BASED ON REAL
PEOPLE--ARE ENTIRELY FICTIONAL.
ALL CELEBERTY VOICES ARE
IMPERSONATED.....POORLY. THE
FOLLOWING PROGRAM CONTAINS
COARSE LANGUAGE AND DUE TO
ITS CONTENT IT SHOULD NOT BE
VIEWED BE ANYONE
Verbs vs Nouns
/users
/users/42
/blogs
/blogs/73
/posts
/posts/314
GET /users
GET /users/42
POST /users
PUT /users/42
DELETE /users
DELETE /users/42
Associations
/users
/blogs
/posts
/users
/blogs
/posts
/users/42/blogs
/blogs/314/posts
/users
/blogs
/posts
/users/42/blogs
/blogs/314/posts
/users/42/blogs/314/posts
/users
/blogs
/posts
/users/42/blogs
/blogs/314/posts
/users/42/blogs/314/posts
/users
/blogs
/posts
/users/42/blogs
/blogs/314/posts
/users/42/blogs/314/posts
Keep URLs short. Don’t overqualify.
GET /blogs/42/posts?tag=javascript
Versions
GET /v1/users
Partial responses
GET /users?fields=email,age
GET /users?limit=10&offset=0
Verbs
/convert?from=EUR&to=BYR&amount=100
Content-types
GET /v1/users/42.xml
Attributes
{
"userId": 1,
"firstName": "Jakob",
"lastName": "Mattsson"
}
Search
GET /search?q=javascript
GET /blog/42/posts?q=javascript
Authentication
Part 3
Conclusion
It goes for ideas too!
Reuse convention.
Reuse code.
Resuse ideas.
Build new things.
”MOST IMPORTANT STEP
FOR BUILD PRODUCT
IS BUILD PRODUCT”
- @fakegrimlock
@jakobmattsson
Thank you!

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