GlassFish. Developing an Application Server in Open Source

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GlassFish

Developing an Application Server in Open Source

Santiago Pericas-Geertsen

Sun Microsystems, Inc.

http://weblogs.java.net/blog/spericas/

[email protected]

Who am I ?

• BA from ITBA

• MA and PhD from Boston University

• With Sun for over 6 years

• Part of Glassfish team

> Worked on numerous projects: XSLTC (XSLT Compiler in JDK),

JAXP, Fast Web Services, Fast Infoset, JAX-WS, XML Performance, Japex, MEP, ...

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Part I - Glassfish

Application Server and Community

What is GlassFish?

• A Community

> Users, Partners, Testers, Developers, ... > Started in 2005 on java.net

• Application Server (version 2)

> Enterprise Quality and Open Source (CDDL & GPL v2) > Java EE 5 Reference Implementation

> Full Commercial Support from Sun

• Growing organically into other Middleware Areas

• Leverages Sun's experience in other Java, Middleware, SDK

GlassFish – The Best Open Source Application Server 5

Glassfish Ecosystem

Users and Other Groups

Open Data Sync

Frameworks and Applications

GlassFish – The Best Open Source Application Server 7

GlassFish v2 Features

• Java EE 5 compliant

• Metro: .NET 3.0 web services interoperability

• Clustering Architecture

• Support for scripting languages

• Modular and ultra fast web tier

• Seamless IDE and tools integration

> NetBeans, Eclipse, IntelliJ, Ant, Maven

• Support for the latest technologies (e.g., JAX-RS)

Java EE 5 = (J2EE 1.4).next

• Java EE 5 Theme: Ease of Development

• POJO-based programming

> More freedom, fewer requirements

• Extensive use of annotations

> Reduced need for deployment descriptors > Annotations are the default

• Resource Injection

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.NET Interoperability using Metro

• High level web services stack

• Fully interoperable with .NET 3.0

• Security, Reliability and Transactions

Metro Overview (.NET Interop)

Security

Metro – GlassFish Web Services Stack metro.dev.java.net

JAXB JAXP SAAJ

Transactions Reliability

SOAP

XML Processing Web Services Core

HTTP

. . .

. . .

GlassFish – The Best Open Source Application Server 11

Clustering Architecture

• Enhances scalability and availability

> Transparent failures

> Ability to add more nodes to cluster

• Runtime view of cluster

> Router/Failover/Load Balancing module > Management module

C lu st er ed In st an ce s

Clustering Architecture

Message Routing / Failover / Load Balancing

M an ag em en t

HA Application State Repository

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Ajax and Scripting Activities

• Dynamic Languages

> glassfish-scripting.dev.java.net

• jMaki - http://ajax.dev.java.net

> Very easily encapsulates Ajax widgets

• DynaFaces - http://jsf-extensions.dev.java.net

Web Tier

• JSP Container

> 10x perf. improvement in JSP compilation (JSR-199)

• Grizzly

> Easy-to-use, highly scalable and customizable HTTP

Framework

> Based on java.nio

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World Record Performance

SpecjAppServer 2004

> July 2007: #1 score on T2000

>883.66 JOPS@Standard for GlassFish v2

>Improved in areas not covered by benchmark

>10% faster than BEA WebLogic

>30% faster than IBM WebSphere 6.1

Sun BEA IBM JBoss 0 100 200 300 400 500 600 700 800 900 SPECjAppServer 2004 Results

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Disclaimers: SPEC and the benchmark name SPECjAppServer 2004 are registered trademarks of the Standard Performance Evaluation Corporation. Competitive benchmark results stated above reflect results published on www.spec.org as of 11/21/07. The comparison presented is based on GlassFish v2 UR1 run on 6 Sun SPARC Enterprise T5120 (1 chip, 8 cores/chip, 8 threads/core) 1.4GHz 8,439.36 SPECjAppServer2004 JOPS@Standard. For the latest SPECjAppServer 2004 benchmark results, visit http://www.spec.org/.

GlassFish Adoption

• Dozens of external committers

• Over 8,000 members

• Excellent analyst reviews

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Some Adoption Indicators

• 2.5m+ hits in 13 months

• 310k+ different IPs

• 150k registrations in 7 months

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GlassFish Deployment

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So Why GlassFish?

• Java EE 5 (vs. Tomcat, JBoss, Websphere)

• Performance! (vs. JBoss)

• Administration (vs. JBoss, Tomcat)

• Enterprise-ready (vs. JBoss, Tomcat)

• Enterprise support (vs. Tomcat)

• Ecosystem: OpenSSO, OpenESB, etc...

• Community (vs. Weblogic, Websphere)

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Reference

Fast, Easy & Reliable Modular, Embedable, Extensible

Part II – Technology

Highlight

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Introduction to REST

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Give everything an ID

•

Link things together

•

Use standard methods (HTTP)

•

Allow for multiple representations

Give Everything an ID

• ID is a URI

> http://mycompany.com/customers/corporationX > http://mycompany.com/products/125

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Link Things Together

• Customer order #5455

<order self="http://mycompany.com/orders/5455">

<customer ref="http://mycompany.com/customers/corporationX"/> <product ref="http://mycompany.com/products/125"/>

<amount value="3"/> </order>

• New identifiers are created

http://mycompany.com/orders/5455/customer

Use Standard Methods

Method Purpose

GET

Read, possibly cached

POST

Create without a known ID

PUT

Update or create with a known ID

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Multiple Representations

• Offer data in a variety of formats

> XML > JSON > (X)HTML

• Maximize reach

• Support content negotiation

> Accept header

GET /foo

Accept: application/json

> URI-based

Stateless Communications

• Long lived identifiers

• Avoid sessions

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REST using JAX-RS

• Operations such as,

GET http://mycompany.com/orders/5455

PUT http://mycompany.com/customers/corporationX

are mapped to resource class methods

• Mapping is controlled using Java annotations

• Resource classes are deployed as web applications in Glassfish

Example Using JAX-RS

@Path("orders/{order_id}")

public class OrderResource { @GET

@ProduceMime(“application/xml”) String getOrder(

@PathParam("order_id") String id) {

return “<order> ... </order>”; }

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Example Using JAX-RS (contd.)

@GET

@ProduceMime(“application/html”) String getOrderHtml(

@PathParam("order_id") String id) {

return “<html><h1>Order id:” + id + “</h1>...</html>”;

Example Using JAX-RS (contd.)

@Path(“customer”)

CustomerResource getCustomer(

@PathParam("order_id") String id) {

return new CustomerResource(

getOrder(id).getCustomer()); }

... }

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Conclusions

• Glassfish community is growing rapidly

> And you should be part of it!

• World class performance and J2EE 5.0 compliance

• Glassfish v3 already under way

• All the latest technologies including RESTful web services are available in Glassfish and Netbeans

Thank You

Santiago Pericas-Geertsen

Sun Microsystems, Inc.