Xitrum Web Framework Live Coding Demos / Xitrum Web Framework ライブコー...

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Sept 06 2014

Ngoc Dao
https://github.com/ngocdaothanh
Takeharu Oshida
https://github.com/georgeOsdDev
http://mobilus.co.jp/

What is
Xitrum?
Xitrum is an async and clustered !
Scala web framework and HTTP(S) server !
on top of Netty, Akka

Why you should use
Xitrum?
• Featureful!
• Easy to use!
• High performance
Scala, Netty, and Akka are fast!
• Scalab...

Homepage:
http://xitrum-framework.github.io/
(there are various demos)
Guides (English, Japanese, Russian):
http://xit...

Where
Xitrum is used?
KONNECT (Messaging Service)!
http://mobilus.co.jp/konnect/!
!
KONNECT can be used in mobile gam...

Xitrum:!
WebSocket (SockJS)!
CORS support

2010-2013 Xitrum 1.x-2.x
http://bit.ly/xitrum13
2014 Xitrum 3.x
• Netty 4.x
• Swagger
• Component
• FileMonitor, i18...

How Xitrum
works?

Client
Netty
Async
Dispatch
request
Action FutureAction ActorAction
Akka
Xitrum
I/O thread pool to
accept request...

http://bit.ly/xitrum-handlers

Client
Client Client
Akka cluster (code)!
Hazelcast (data)
Client
Netty
Xitrum
A FA AA
Akka
Netty
Xitrum
A FA A...

Embed Xitrum
object MyApp {
def main(args: Array[String]) {
...
// Somewhere in your app
xitrum.Server.start()
...
...

Action example
import xitrum.Action
import xitrum.annotation.GET
!
@GET("hello")
class MyAction extends Action {
def...

Annotations: Scala vs Java
Scala: @GET("matsuri", "festival")
Java: @GET(Array("matsuri", "festival"))
!
Scala:
case ...

Benefits of using annotations
Routes in .class and .jar in classpath are
automatically collected and merged.
A.class
B...

Problem with annotations
Collecting routes from .class and .jar files is slow.!
!
Solutions:!
• In development mode, r...

Annotations defined by Xitrum:!
http://bit.ly/xitrum-annotations!
!
Lib to scan classes in classpath to collect routes:...

Demo overview
GET / GET /chat
username
password
login
Hello
!
Hello!
How are you?
Fine
message send
POST /login...

Demo overview
• Simple HTTP CRUD with MongoDB
POST /admin/user
GET /admin/user
GET /admin/user/:userId
PUT /admin/use...

DB Cluseter
Xitrum1 Akka Hazelcast
Xitrum2 Akka Hazelcast
Xitrum3
Cluster
LB
(HAProxy, Nginx,
Route53 etc.)
NoSQL ...

Getting started
with xitrum-new
skeleton
https://github.com/xitrum-framework/xitrum-new
https://github.com/xitrum-fram...

@GET("admin")
class AdminIndex extends Action {
def execute() {
// Get all users
val users = User.listAll()
// Pass u...

- import matsuri.demo.action._!
- import matsuri.demo.model.User!
!
div.row#usersTable!
table.table.table-striped#mess...

└── src
└── scalate
└── matsuri
└── demo
└── action
├── AdminIndex.jade
└── DefaultLayout.jade
package matsuri.demo...

!!! 5
html
head
!= antiCsrfMeta
!= xitrumCss
!
meta(content="text/html; charset=utf-8" http-equiv="content-type")
t...

form(role="form" method="post" action={url[AdminUserCreate]})
!= antiCsrfInput
div.modal-header
button.close(type="butt...

@POST("admin/user")
class AdminUserCreate extends AdminAction {
def execute() {
// Get request paramaters
val name = p...

object SVar {
object isAdmin extends SessionVar[Boolean]
}
Use before filter
to check
trait AdminFilter {
this: Acti...

@Swagger(
Swagger.Summary("Create User"),
Swagger.Response(200, "status = 0: success, 1: failed to create user"),
Swagg...

@GET("login", "")
class LoginIndex extends DefaultLayout {
def execute() {
respondView()
}
}
!
@POST("login")
clas...

jsAddToView(
"var url = '" + sockJsUrl[ChatAction] + "';" +
"""
var socket;
var initSocket = function() {
socket = ne...

import xitrum.{SockJsAction, SockJsText}
import xitrum.annotation.SOCKJS
!
@SOCKJS("connect")
class ChatAction extends...

Lookup
singleton
Actor
with
Glokka
Xitrum
socket open
Client
HubActor
trait Hub extends Actor {
protected var cl...

$Messaging overview SockJsText! (socket.send) hub ! Push(msg) clients.foreach { _ ! Publish(msg)} respondSockJSText(msg:...$

Cluster config for Hazelcast
hazelcastMode = clusterMember
!
cache = xitrum.hazelcast.Cache
#cache {
# # Simple in-me...

akka {
loggers = ["akka.event.slf4j.Slf4jLogger"]
logger-startup-timeout = 30s
!
actor {
provider = "akka.cluster.Clu...

Live class reload
during development
https://github.com/xitrum-framework/agent7
https://github.com/dcevm/dcevm
java -j...

Package project for
deploying to
production server
https://github.com/xitrum-framework/xitrum-package
sbt/sbt xitrum-p...

Monitor Xitrum
in production mode
• Scalive
• Metrics
• Log to fluentd
https://github.com/xitrum-framework/scalive
h...

Thank
you!