AVATAR 2.0 AVATAR 2.0 MORE THAN JUST NODE.JS MORE THAN JUST NODE.JS ON THE JAVA VIRTUAL MACHINE ON THE JAVA VIRTUAL MACHINE Niko Köbler ( ) @dasniko {JavaScript}Training

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I'M TO HIRE! I'M TO HIRE!

WHY WHY JAVASCRIPT? JAVASCRIPT? (undefined is not a function!)

WITH JAVA, WE HAVE... WITH JAVA, WE HAVE... Longterm investments Mature solutions Complex and extensive business logic Integration of heterogeneous environments across platforms Blueprints and best-practices available Proven infrastructure

AND NOW, AND NOW, YOU TELL US ABOUT THIS YOU TELL US ABOUT THIS BRAVE NEW (NODE-)WORLD BRAVE NEW (NODE-)WORLD Mostly new applications Mostly No-SQL backed New application approaches More focused silo apps "Cool stuff" > 110.000 NPM libraries available No enterprise integration (yet) Infrastructure?

SPEAKING JAVASCRIPT SPEAKING JAVASCRIPT Like it or not, JavaScript is everywhere these days - from browser to server to mobile - and now you, too, need to learn the language or dive deeper than you have. Dr. Axel Rauschmayer http://speakingjs.com

THOUGHTWORKS THOUGHTWORKS I think JavaScript has been seen as a serious language for the last two or three years; I think now increasingly we’re seeing JavaScript as a platform. (Sam Newman, ThoughtWorks’ Global Innovation Lead) JavaScript has emerged both as a platform for server-side code but also a platform to host other languages. (January, 2014) http://www.techworld.com.au/article/536950/rise_rise_javascript

INTEGRATION? INTEGRATION?

INTEGRATION! INTEGRATION!

NASHORN NASHORN JavaScript Enginge on the JVM based on invokedynamic feature competes with Google V8 ECMAScript 5.1 compatible (ECMAScript 6 in future) Seamless interoperability of Java and JavaScript Language and API Extensions closures, collections & for each, multi-line string literals, string interpolation, __noSuchProperty__, __noSuchMethod__, typed arrays, binding properties, error extensions, conditional catch clause, String functions, and many, many more... https://blogs.oracle.com/nashorn/

JAVA & JAVASCRIPT JAVA & JAVASCRIPT ...are similar than car and carpet are similar.

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NASHORN NASHORN COMMAND LINE CLIENT COMMAND LINE CLIENT $ $JAVA_HOME/bin/jjs jjs> print('Hello Nashorn!'); INVOKING JAVASCRIPT FROM JAVA INVOKING JAVASCRIPT FROM JAVA ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn"); engine.eval("print('Hello Nashorn!');"); engine.eval(new FileReader("scriptfile.js")); Invocable invocable = (Invocable) engine; Object result = invocable.invokeFunction("jsSayHello", "Nashorn");

NASHORN NASHORN INVOKING JAVA FROM JAVASCRIPT INVOKING JAVA FROM JAVASCRIPT package my.package; public class MyJavaClass { static String sayHello(String name) { return String.format("Hello %s from Java!", name); } } var MyJavaClass = Java.type('my.package.MyJavaClass'); var result = MyJavaClass.sayHello('Nashorn'); print(result); // Hello Nashorn from Java!

AVATAR-JS AVATAR-JS Node.js on the JVM ~95% Node.js API compatibility no Chrome V8 native APIs many of the node-modules work (e.g.: abbrev, ansi, async, block-stream, chmodr, chownr, coffee-script, colors, commander, connect, debug, engine.io, express, ftsream, glob, graceful-fs, inherits, ini, init-package-json, grunt, grunt-bower-task, jade, lodash, mime, mkdirp, mocha, moment, mongodb, mongoose, mustache, node-unit, node-uuid, once, opener, optimist, osenv, passport, q, read, redis, request, retry, rimraf, ronn, semver, slide, socket.io, tar, uglify-js, uid-number, underscore, which, winston) https://avatar-js.java.net

https://avatar-js.java.net

PROJECT AVATAR PROJECT AVATAR End-to-end fullstack framework Client-Library Services (REST, WS, SSE) JMS Running in a Java EE Application Server Glassfish 4 WebLogic 12.1.3

AVATAR-JS & AVATAR-JS & PROJECT AVATAR PROJECT AVATAR BECOME BECOME AVATAR 2.0 AVATAR 2.0

AVATAR 2.0 AVATAR 2.0 no more Java EE application server needed single, standalone JVM

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THREADS & THREADS & INTER-THREAD INTER-THREAD COMMUNICATION COMMUNICATION

MESSAGE BUS MESSAGE BUS var avatar = require('org/glassfish/avatar'); var threads = require('org/glassfish/avatar/threads'); var app = avatar.application; var name = app.name; var bus = app.bus; // listen for messages on topic 'hello' bus.on('hello', function(body, msg) { print(name + ' got message: ' + JSON.stringify(body)); }); // publishing to 'hello' topic (e.g. in file hello.js): bus.publish('hello', { x : 'x', y : 'y' }); // start a background thread for publishing threads.newBackgroundThread('background', 'hello.js').start();

MESSAGE BUS METHODS MESSAGE BUS METHODS bus.publish(topic, body); bus.publishTo(address, topic, body); bus.send(topic, body); bus.sendTo(address, topic, body); bus.reply(replyTo, body); bus.subscribe(topic); bus.unsubscribe(topic);

SHARED STATE SHARED STATE Cache/Map API: Key-Value-Store (Coherence backed, Cache/JSR-107 compliant) var avatar = require('org/glassfish/avatar'); var state = avatar.application.state; state.put('key', {'value': 'myValue'}); state.keys(); // -> Array state.contains('key'); // -> boolean state.get('key'); // -> Object state.remove('key'); // -> void

AVATAR AVATAR PERSISTENCE PERSISTENCE MODEL-STORE-API MODEL-STORE-API

MODEL-STORE API MODEL-STORE API database setup var store = avatar.newStore(‘mysql’, { host: 'localhost', port: 3306, database: 'test', username: 'root', createDb: true }); JPA (Eclipselink) / JDBC based relational and non-relational user-transactions possible

MODEL-STORE API MODEL-STORE API model setup var Family = avatar.newModel('family', { "name" : { type : "string", primary : true }, "description" : "string" }); var Product = avatar.newModel('product', { "name" : { type : "string", primary : true }, "madeBy" : "string", "price" : "number", "quantity" : "integer" });

MODEL-STORE API MODEL-STORE API relations & binding Family.hasMany(Product, { as : 'products', foreign : 'family' }); store.bind(Family, Product);

MODEL-STORE API MODEL-STORE API usage during runtime store.connect(function() { Product.create({ name: 'Widget', price: 1.00, quantity: 2, }, function(err, w1) { console.log(JSON.stringify(w1)); store.disconnect(function() { // done }); }); });

R.I.P. R.I.P. UI Library REST Services (Web-)Socket Services Push Services (SSE) JMS --> NEW T3 THIN CLIENT --> NEW T3 THIN CLIENT FOR JMS & REMOTE EJB CALLS FOR JMS & REMOTE EJB CALLS

DEMO TIME DEMO TIME

COMPETITORS ? COMPETITORS ? Red Hat Nodyn ( ) Vert.x interaction/integration based on DynJS ( ) nodyn.io dynjs.org --> Java Magazin 03/2015

AVATAR 2.0 - CONCLUSION AVATAR 2.0 - CONCLUSION Lightweight Node.js integration in Java Enterprise context Run JavaScript Apps on a standard Java Infrastructure 95% Node.js API compatibility Multi-threaded, asynchronous, non-blocking API Run one event-loop per thread, multiple threads Inter-Thread-communication / shared state via event bus or map API Avatar Persistence (Model-Store-API) http://avatar.java.net

AVATAR 2.0 AVATAR 2.0 THANK YOU! THANK YOU! QUESTIONS? QUESTIONS? @dasniko