Avatar 2.0

More than just Node.js on the Java Virtual Machine

Transcript

1. 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
3. I'M TO HIRE! I'M TO HIRE!
4. WHY WHY JAVASCRIPT? JAVASCRIPT? (undefined is not a function!)
5. 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
6. 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?
7. 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
8. 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
9. INTEGRATION? INTEGRATION?
10. INTEGRATION! INTEGRATION!
11. 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/
12. JAVA & JAVASCRIPT JAVA & JAVASCRIPT ...are similar than car and carpet are similar.
15. 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");
16. 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!
17. 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
18. https://avatar-js.java.net
19. 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
20. AVATAR-JS & AVATAR-JS & PROJECT AVATAR PROJECT AVATAR BECOME BECOME AVATAR 2.0 AVATAR 2.0
21. AVATAR 2.0 AVATAR 2.0 no more Java EE application server needed single, standalone JVM
23. THREADS & THREADS & INTER-THREAD INTER-THREAD COMMUNICATION COMMUNICATION
24. 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();
25. 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);
26. 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
27. AVATAR AVATAR PERSISTENCE PERSISTENCE MODEL-STORE-API MODEL-STORE-API
28. 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
29. 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" });
30. MODEL-STORE API MODEL-STORE API relations & binding Family.hasMany(Product, { as : 'products', foreign : 'family' }); store.bind(Family, Product);
31. 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 }); }); });
32. 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
33. DEMO TIME DEMO TIME
34. COMPETITORS ? COMPETITORS ? Red Hat Nodyn ( ) Vert.x interaction/integration based on DynJS ( ) nodyn.io dynjs.org --> Java Magazin 03/2015
35. 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
36. AVATAR 2.0 AVATAR 2.0 THANK YOU! THANK YOU! QUESTIONS? QUESTIONS? @dasniko