Improve your Developer Experiece using the WAS Liberty Profile with JRebel

D-05 Improve your Developer Experiece
using the WAS Liberty Profile with JRebel

Anton Arhipov | JRebel Product Lead | ZeroTurnaround
Tim deBoer | RAD & WDT Chief Architect | IBM

© IBM Corporation 2012

IBM WebSphere Technical Convention 2012 – Berlin, Germany

Agenda

•  WAS, RAD and WDT
•  The WAS Liberty Profile
•  JRebel


3


WebSphere Application Server Family (V8.5)
WAS for WAS Hypervisor Edition WAS ND WAS for z/OS
Developers
Tools +Liberty +Liberty +Intelligent Tools +Liberty +Intelligent +Liberty +Intelligent
Edition Profile Profile Mgmt Edition Profile Mgmt Profile Mgmt

Enables efficient Optimized to instantly run Delivers near-continuous Takes full advantage of
development of in VMware and other availability, with advanced the z/OS Sysplex to deliver a
innovative apps server virtualization performance and mgmt highly secure, reliable, and
that will run on environments capabilities, for mission- resource efficient
WAS in production critical apps server experience

Available as a
no-charge edition
for the developer WAS
desktop and
Provides secure, high performance transaction engine for
includes Eclipse Tools +Liberty
moderately sized configurations with web tier clustering and
adapters Edition Profile
failover across up to five application server profiles

WAS Express WAS CE
An open source-based, small
A lower-cost, ready-to-go footprint foundation with no up-
+Liberty solution to build dynamic front acquisition costs
Profile
Web sites & apps

Built on a common code base

Rational Application Developer and
the new WAS Developer Tools

Portal &
Comprehensive

Portlet JCA
SIP
iWidgets SCA Analysis
CEA
JSF Profiling
Batch

Web 2.0 Visualization
Cloud
Focused

& mobile OSGi
Java EE Team
WAS & Liberty debug Team code
Profile coverage
Basic Eclipse WAS Developer Tools Rational Application Developer

Freely available
Free Premium Offering
Supported for a fee

4


What Do Developers Care About?

•  Common development tasks include:
fastest
•  Modify file within an application
•  Debug a problem in an application
Hourly •  Restart/redeploy application
•  Restart server
Daily •  Share code with team
•  Change app structure (add/remove a module/bundle) faster
•  Make config change
Weekly
•  Share config change with team
•  Reproduce problem from another environment
Monthly •  Upgrade to new service release
•  Create application
•  Install server fast

Time to complete
Frequency

•  All tasks should be as painless as possible, with special emphasis on the more
frequent ones. If the time taken to accomplish these tasks is an impediment to
the development, the cost of the fidelity of the test server runtime is challenged
•  These kind of capabilities reflect on the Application Server runtime as well as
6
the tools © IBM Corporation 2012

7

WAS v8.5: Introduces the Lightweight “Liberty”
Profile – For Web, OSGi and Mobile Apps
A highly composable, dynamic Server profile
Dynamic Server Profile Developer First Focus
Not static like Web Profile – Simplified, shareable server config (like a
determines by app at a fine- dev. artifact). One XML file or several to
grained level simplify sharing & reuse of config

Incredibly fast: Small Download:
start times: < 5 secs < 50MB

Lightweight runtime Dynamic Runtime
Small memory footprint: Adding features & updating
WAS v8.5 configs does not require
(46MB for TradeLite)
Liberty Profile server restart

Integrated Tooling Integration with ND Job Mgr
Powerful tools. Simple Optionally manage server
Eclipse feature lifecycle through ND Job Mgr

Unzip Install & Deploy Popular Platforms Fidelity to full profile WAS
IM or unzip to install. Unzip Adds MAC OS for Same reliable containers & QOS
deploy of server + app + config development (easy migration from dev to ops)



No Hurdles to Install
•  Tools and runtime are free for development. No time limit
•  Eclipse feature install for tools; 40MB zip download for server profile.
–  Installation Manager also supported à same installed result.
•  2 minutes from “Nothing” to “Done”:
•  Install WAS Developer Tools for Eclipse Feature

• 

•  Use the Tools to download the WAS Liberty Profile
or download 40MB zip from WASdev.net

www.wasdev.net

8

9


Simplified Server Configuration

•  Simplest case: One
XML file for all
server config
•  Editable within the
workspace
•  Exportable,
shareable,
versionable

No need for Admin Console, wsadmin,
or extended EARs
server.xml
X
resources.xml

etc.

ws-security.xml



Highly Composable Runtime Based on ‘Features’

WAS Extensions

Java EE Support

jpa-2.0

jsp-2.2 restconnector-1.0
Runtime Services
& servlet-3.0 appsecurity-1.0
Config Model
Feature Manager HTTP Transport Application Manager

Full WAS Profile WAS v8.5 Liberty Profile



WAS V8.5 Feature Set

Programming Model Runtime
zosTransaction-1.0

zWlm-1.0 zosSecurity-1.0
beanvalidation-1.0
appSecurity-1.0
jaxrs-1.1 osgi-jpa-1.0
localConnector-1.0 restConnector-1.0
blueprint-1.0
ssl-1.0
jsf-2.0 jpa-2.0
json-1.0 monitor-1.0
jsp-2.2
sessionDatabase-1.0
servlet-3.0 wab-1.0
jndi-1.0 jdbc-4.0

jaxws-2.2

cdi-1.0 ejblite-3.1

Alpha © IBM Corporation 2012


Liberty Profile – Startup & Footprint

•  The problem of a lightweight
development environment in S tartu p
&
F o o tp rin t
C o mp aris o n

o f
v ario u s
lig h tweig h t
s erv ers
WebSphere has been
solved! 9.0 120

S ta rtu p
time
in
sec onds
(L ower
is
B etter)
8.0 7.8 104
–  Liberty Profile startup & 93 100
7.0
footprint are on par with

Footprint
in
MB
(L ower
is
B etter)
6.0 80
5.3
Tomcat. 5.0
60
–  Liberty Profile starts up in less 4.0 46

than half the time of JBoss 3.0 34
2.3
40

2.0 1.7
Web profile. 20
1.0

0.0 0
T omc a t
7.0.12 J B oss
7.0
Web
G la ssF ish
3.1
L iberty
P rofile
P rofile Web
P rofile
System Info:
Lenovo T60p - 2 x 2.16 GHz Intel Core Duo T2600 S tartup
time
2GB RAM, Windows XP 32-bit F ootprint
Apache Tomcat 7.0.12
JBoss Community Edition 7.0 Web Profile server Note: Tomcat , JBoss, and GlassFish were
GlassFish Server 3.1 Open Source Edition Web Profile
measured with the HotSpot JDK, while Liberty was
WAS V8.5 Liberty Profile
(All servers had the TradeLite benchmark application installed) measured with the IBM JDK.
12


http://jrebel.com/ibmwtc



The Typical Turnaround In Java EE Environment

Observe Make a
results change

Build,
deploy,
wait


AVG ~2.5 min

http://zeroturnaround.com/java-ee-productivity-report-2011/ © IBM Corporation 2012


The Turnaround Time Sink

1s – 5m 1s – 1m 0,5 – 10m ~1m

build
server startup

application initialization

in-app
navigation



Build

Resolve dependencies

Copy static resources

Compile classes

Package modules into JARs

Package everything into WAR/EAR


Exploded Directory Deployment



Resource Mapping

getResource(“hello.html”) read(“src/main/.../hello.html”)



Build

Resolve dependencies

Copy static resources

Compile classes
Package modules into JARs

Package everything into WAR/EAR


HotSwap
Make changes in IDE
OldClassLoader

MyObject.class
HotSwap
New code
111000100 Debugger
101010010 New code
111000100
101010010

MyObject



JRebel vs HotSwap

HotSwap JRebel
Changing method bodies + +
Adding/removing methods IBM J9 +
Adding/removing constructors - +
Adding/removing fields - +
Adding/removing classes - +
Adding/removing annotations - +
Replacing super class - -
Adding/removing implemented - -
interfaces © IBM Corporation 2012


JRebel
Make changes in IDE

OldClassLoader
Framework

MyObject.clas
Code s
101000101
New code
JRebel
100010010
111000100
101010010

MyObject
Configuration
(XML, annotations,..)



in action


The Turnaround Time Sink

1s – 5m 1s – 5m 0,5 – 10m ~1m

build
server startup

application initialization

in-app
navigation



JRebel for WebSphere

•  WebSphere 6.1
•  WebSphere 7.x
•  WebSphere 8.x-8.5
•  WebSphere 8.5 Liberty
•  Including EJB support



JRebel Nature



JRebel for Liberty



Questions?

As a reminder, please fill out a session evaluation



Copyright Information
•  © Copyright IBM Corporation 2012. All Rights Reserved. IBM, the IBM logo, ibm.com, AppScan,
CICS, Cloudburst, Cognos, CPLEX, DataPower, DB2, FileNet, ILOG, IMS, InfoSphere, Lotus, Lotus
Notes, Maximo, Quickr, Rational, Rational Team Concert, Sametime, Tivoli, WebSphere, and z/OS
are trademarks or registered trademarks of International Business Machines Corporation in the
United States, other countries, or both. If these and other IBM trademarked terms are marked on
their first occurrence in this information with a trademark symbol (® or ™), these symbols indicate
U.S. registered or common law trademarks owned by IBM at the time this information was
published. Such trademarks may also be registered or common law trademarks in other countries.
A current list of IBM trademarks is available on the Web at “Copyright and trademark information” at
ibm.com/legal/copytrade.shtml.
•  Coremetrics is a trademark or registered trademark of Coremetrics, Inc., an IBM Company.
•  SPSS is a trademark or registered trademark of SPSS, Inc. (or its affiliates), an IBM Company.
•  Unica is a trademark or registered trademark of Unica Corporation, an IBM Company.
•  Java and all Java-based trademarks and logos are trademarks of Oracle and/or its affiliates. Other
company, product and service names may be trademarks or service marks of others. References in
this publication to IBM products and services do not imply that IBM intends to make them available
in all countries in which IBM operates.


Improve your Developer Experiece using the WAS Liberty Profile with JRebel

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