Ibeans Dead Simple Integration

iBeans dead-simple integration for the web

about me
Creator of the Mule ESB Project 2003
Founder, MuleSoft
Creator of iBeans
15 years of hooking s#!t together
Lazy

agenda
Introduction to iBeans
The API
Code dive
Demo
The future of iBeans

overview

goals
Integration for the Web
No SOA
Minimal concepts, no TLAs
Reuse
Task-focused
Cross-platform; Java, JS, Scala, JRuby

server ‘api’
Application annotations
receive and send data
schedule tasks
create request / response services
HTTP, JMS, DB, FTP, etc

client ‘api’
iBeans - simple objects that talk to stuff

Application Annotations

annotations: schedule public class MyObject { @Schedule( interval=“ 60000 ” ) String shoutOut( ) { return “ Hey what’s up? ”; } } }

annotations: schedule with cron public class MyObject { @Schedule( cron=“ 0 * * * * ? ” ) String shoutOut( ) { return “ Hey what’s up? ”; } } }

annotations: scheduled send public class MyObject { @Schedule( cron=“ 0 * * * * ? ” ) @Send( uri=“ xmpp://${jabber.creds}@jabber.org:6666/myGroup?groupChat=true ” ) String shoutOut( ) { return “ Hey what’s up? ”; } }

annotations: receive public class MyObject { @Receive( uri=“ jms://my.queue ” ) void onMessage(Object msg ) { log(msg); } } }

annotations: polling receive public class MyObject { @Schedule( cron=“ 0 0 12 * * ? ” ) @Receive( uri=“ jms://my.queue ” ) void onMessage(Object msg ) { log(msg); } } }

Architecture

architecture Runtime Container: Tomcat, Tcat, (Mule) iBeans Channels: HTTP, SMTP, IMAP, WS, REST, JDBC, JMS, XMPP, FTP, ATOM Annotations (API) Transform and bindings Scheduler Web apps apps web your console

ibeans central Runtime Container: Tomcat, Tcat, (Mule) iBeans Channels: HTTP, SMTP, IMAP, WS, REST, JDBC, JMS, XMPP, FTP, ATOM Annotations (API) Transforms and bindings Scheduler Web apps apps web your console iBeans Central repository

iBean Objects

what are ibeans?
A way to access services
Facebook, AWS, eBay, Twitter
A well-defined interface to a service
‘ service’ - public or internal
HTTP, JMS, FTP, JDBC, etc.

what are ibeans?
Encapsulate a service in a way that users don’t need to read the manual
Use in Java and JavaScript
more languages to follow
Re-usable, publish to iBeans Central
Or a private repository

ibeans in java public class MyObject { @IntegrationBean private TwitterIBean twitter; public void logTimeline() { twitter.setCredentials(“ user ”, “ shhhh ”); log(twitter.getFriendTimeline()); } }

ibeans in javascript
<script type = " text/javascript ”>
var ibeans = new IBeansClient();
creds = ibeans.config.get(“ twitter.user ”, “ twitter.pass ”);
ibeans.twitter.setCredentials(creds[0], creds[1]);
ibeans.twitter.getFriendTimeline(readTweets);
function readTweets(tweets, error) {
//do stuff
}
</script>

create an ibean
A Java interface with annotated methods
A definition of how to talk to a service
Not the code to actually do it

create an ibean
public interface MyTwitterIBean
{
@Call( uri=" http://twitter.com/statuses/show/{id}.json " )
String statusesShow( @UriParam( " id " ) String id)
throws CallException;
}

ibeans can have state
{
@State
void init( @UriParam( “ format ” ) String format);
@Call( uri=" http://twitter.com/statuses/show/{id}.{format} " )
String statusesShow( @UriParam( " id " ) String id) throws … ;
}

ibeans can have defaults
{
@UriParam( “ format ” )
static String DEFAULT_FORMAT = “ json ”;
@State
void init( @UriParam( “ format ” ) String format);
String statusesShow( @UriParam( " id " ) String id) throws … ;
}

Transforms & Bindings

transforms
Transformers convert one object to another
String to a URL
Transform XML; Xquery, XSLT
Enrich data

transforms
Transformers are discovered not configured
Based on the current object received and the object type required by a method parameter.
Annotations for injecting meta data
Message headers*
Attachments*
* not shown today

transforms public class SimpleTransformers { @Transformer URL toUrl(String string ) throws MalformedURLException { return new URL(string); } }

bindings
Marshal and Unmarshal Objects
XML (JAXB)
XML document to an Order object
JSON (Jackson)
JSON String to a TwitterUser object
Supports automatic handling

bindings: jaxb public class JaxbTransformers { @Transformer Order toOrder(Document doc, JAXBContext jaxb ) throws … { Unmarshaller u = jaxb.createUnmarshaller(); return (Order) u.unmarshal(selectOne(“ /env/order ”, doc); } }

bindings: jaxb public class MyObject { @Receive( uri=“ jms://my.queue ” ) void onMessage( @MessagePayload Order order ) { log(order); } } Tells iBeans to transform the JMS Payload to an Order object

… but wait
How do we go from a Jms Message to an Xml Document?
Jms Message is normalized
TextMessage – String
BytesMessage – byte[ ]
ObjectMessage – Deserialized Object
etc

… and we need to add… public class JaxbTransformers { @Transformer( sourceTypes={String. class } ) Order toOrder(Document doc, JAXBContext jaxb) throws … { Unmarshaller u = jaxb.createUnmarshaller(); return (Order) u.unmarshal(selectOne(“/env/order”, doc); } }

transform flow

ibeans can use transformers
{
…
@State
void init( @UriParam( “ format ” ) String format,
@ReturnType Class retType );
<T> T statusesShow( @UriParam( " id " ) String id) throws … ;
}

coding with ibeans
Eclipse IDE plugin
Maven Archetypes, Run targets
Template projects
No Support for IntelliJ yet…

Framework Support

guice
public class MyModule extends AbstractGuiceIBeansModule
{
protected void doConfigure() throws Exception
{
bind(EchoService. class ).asEagerSingleton();
}
}

spring
<beans …>
<bean name =" ibeansContext ”
class =" org.mule.ibeans.spring.
IBeansContextFactoryBean "/>
…
</beans>

coming soon
GWT / GXT
Grails
Play Framework
JSF
Struts 2 (may already work)

other things
Support for JavaScript and AJAX
iBeans has a Groovy shell
Execute scripts interactively or command-line
iBeans Console
Configure your iBeans instance
Browser and Download from iBeans Central

possibilities
Great for embedding
Cloud containers
Wikis: Confluence, Xwiki
DSLs
Mobile apps
Widgets

Whats next for ibeans
Web Services support (JAX-RS/WS)
Support for scripting in the console
Centralized configuration
Mule 3.0 will be able to host iBeans
Combine with Tcat for cloud development

… and after that
Support for other languages: Scala, Ruby, Clojure, etc
Become the WCF for the JVM?

thanks
web: http://mulesoft.org/ibeans
blog: http://blog.rossmason.com
twitter: @rossmason

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Ibeans Dead Simple Integration

by Ross Mason on Nov 19, 2009

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Ibeans Dead Simple Integration — Presentation Transcript