Web Logic 81

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Introducing WebLogic Server 8.1

Delaware Valley BEA User Group

Aaron MulderChief Technical Officer

Chariot Solutions

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DVBUGMarch 18 Copyright 2003 Chariot Solutions

Tonight, well take a look at

New features in WebLogic Server 8.1

Support for J2SE 1.4 (yes) & J2EE 1.4 (no)

UI improvements

New tools & J2EE features

Performance improvements under the hood

Timeline for the 8.1 release

Bonus Slide

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About Aaron Mulder

Chief Technical Officer of Chariot Solutions

Published author (Professional EJB, BEA WebLogic 7.0Server Deployment and Administration Handbook)

Presented at JavaOne 2001-2003, the Philadelphia JavaUsers Group, local seminars, etc.

Member of the JSR-88 Expert Group (J2EE ApplicationDeployment)

Contributed to open-source projects such as JBoss,OpenEJB, and PostgreSQL

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About Chariot Solutions

Information Technology provider focused on automatingbusiness processes

Team of leading Java architects on staff

Technical expertise in software architecture,development, and systems integration

Proven track record with companies such as ExxonMobil,Midas, Rosenbluth International, UGI Utilities, and theState of New Jersey

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WLS 8.1 J2SE and J2EE Support

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J2EE Support

Supports J2EE 1.3

Minimal J2EE 1.4 support

Some JSR-77/JSR-88 features

Web Services implementation is still proprietary No EJB 2.1/JSP 2.0 features yet

J2EE 1.4 support may debut in Diablo (2004)

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J2SE Support

WebLogic Server 8.1 runs on J2SE 1.4

Ships with Sun & JRockit implementations

Includes new features such as:

new logging API NIO (though WebLogic does notuse this currently)

JDBC 3 (includes JDBC 2 Optional Package/Data Sources)

Enhanced printing support

Built-in extensions include JAAS, JCE, XML, etc.

Better thread dumps & debugging support

Improved garbage collector

JRockit adds more monitoring features

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WLS 8.1 UI Improvements

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(Domain) Configuration Wizard

Domains are the same as before

One admin server, zero or more managed servers

Multiple servers can be in one or more clusters, or may just beindividual

Configuration wizard doesnt divide domains based onnumber of servers any more

Still need to select a domain type for the services toinclude (Workshop, Examples, Platform, etc.)

Wizard lets you configure services such as JDBC, JMS,etc.

Can use the wizard to update existing domains

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Configuration Wizard Screen Shots

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Administration Console

All screens split out and hide the advanced options

Right-mouse works right in navigation applet

Still some options buried in right-mouse menus

Help is included on the main console screens New wizard for SSL/Keystore configuration

Wizards for JDBC pools, data sources, etc.

Can test a JDBC pool from the console

Data sources use a drop-down to select JDBC pools!!! No more Data Sources vs. TX Data Sources mostly

Network channels rolled into server configuration

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WebLogic Workshop

Now possible to use Workshop for: Web Services (as before)

Web applications

EJBs

Connectors

Workflow/BPM (for Integration product)

etc.

Targeted at J2EE developers with less experience and anincomplete understanding of important J2EE concepts

The VB-killer (of course, is it really easier to learn Java, HTML,

XML, JSP, JSP expression language, SQL, JSP tags, and all therelevant J2EE properties than it is to learn Basic?)

Its not clear who wants their least-skilled developers working ondistributed enterprise applications

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Server Changes

Error messages and suggested actions are indexed onthe WebLogic documentation web site, and available via:java weblogic.GetMessage -detail -id BEA-010202

JCE is supported for application-level SSL, etc. Admin tool supports batch mode, JDBC & cluster tests,always returns 0/1 on success/failure

appc precompiler/validator replaces ejbc & jspc

Smaller client JARs for EJB/RMI clients & JMS clients Can install Node Manager during basic server install

Server archives a preset number of config.xml files

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JDBC Enhancements

JDBC Connection pools can be tested in config wizard,console, admin tool, etc.

Can set a timeout for clients to wait for a connection froma full pool (previously only limited by TX timeout)

Can set a retry interval for creating connections (if theDB is down, etc.)

Can test connections as they are created

Better support for vendor extensions, including themethod getVendorConnection()

Support for JDBC RowSets

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Development Tool Enhancements

New recommended development directory structure, laysout all source code like the EAR, builds to a separatedirectory

3 new tools compile, package, and deploy projects

structured like this

src/META-INF/application.xml (& weblogic-application.xml)

src/APP-INF/lib/3rdparty.jar

src/ejbjar/META-INF/ejb-jar.xml (& weblogic DDs)

src/ejbjar/com/somewhere/SomeBean.java

src/ejbjar/com/somewhere/SomeHome.java (etc)src/webwar/WEB-INF/web.xml (& weblogic.xml)

src/webwar/WEB-INF/lib/3rdparty.jar

src/webwar/WEB-INF/classes/com/somewhere/Servlet.java

src/webwar/index.jsp

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Applications: Class Loading

Can add common application libraries to an APP-INF/libdirectory in the EAR

Can specify how individual EJBs are loaded, to makeredeployment faster

If EJB Home/Remote interfaces are loaded in the normal CL,and the impl is loaded in a child CL, the impl can be redeployedwithout redeploying the entire EJB JAR

Not recommended for production use

Can manually arrange an entire hierarchy of classloaders involving individual EJB JARs and WARs in theweblogic-application.xml deployment descriptor

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Applications: Class Loading Example

parent-ejb.jar

parent-web.war

child-ejb.jar

child-web.war

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Applications: Lifecycle Classes& Listeners

Startup & shutdown classes are similar to server startup &shutdown classes, but for individual applications

Listeners extendweblogic.application.ApplicationLifecycleListener

Packaged in a JAR in the EAR, or in APP-INF/classes Activated with weblogic-application.xml like this:

com.test.AppListener

listeners.jar

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EJB Enhancements

J2EE 1.3 compliant defaults

parameters by value for remote interfaces

MDBs can be assigned to execute queues using thedispatch-policy element in weblogic-ejb-jar.xml

(previously only sessions & entities could do this)

There are some new warnings (EJB loaded from serverclasspath, etc.) and the disable-warning element in

weblogic-ejb-jar.xml

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CMP Entity Bean Enhancements

Better performance

More monitoring information on EJB instance pool/cache

WLS supports bulk updates & deletes as well as bulk

inserts, with appropriate drivers (addBatch(), etc.) Auto-detects DB type for EJB QL optimization, DDL, etc.

Auto-create tables will replace tables when CMP/CMRfields change

J2EE 1.3 compliant defaults EJB existence checked on every method call (not end of TX)

Pending changes written before finders/selectors execute

CMP support for DB2

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JMS Enhancements

3rd-party JMS objects can be included in JNDI via theconsole

JMS objects declared in an EJB deployment descriptor:

register in transactions automatically (the JMS provider mustsupport XA transactions if the EJB method uses one)

Support application or container authentication to JMS

Periodically test JMS connections for errors

Restrict methods which shouldnt be called in J2EE apps

Use pooled JMS sessions

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JTA Enhancements

A single non-XA resource can be enlisted in atransaction. The XA resources support 2-phase commit(prepare then commit) while the non-XA resourcedoesnt. The logic looks like this:

1. Prepare all XA resources. If any fail, roll back the TX.

2. Commit the non-XA resource. If it fails, roll back the TX.

3. If everything got this far, commit the XA resources and the TX.

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Web Services Enhancements

Uses SOAP 1.2

Implements a pre-release version of WS-Security formessage integrity and confidentiality

Current spec drafts already differ from WebLogicimplementation

Includes proprietary features for reliable delivery, onlyusable between WebLogic clients/servers

Includes proprietary features for Web Services over JMS

(not HTTP[s]), only usable between WebLogicclients/servers

Not clear why wed want to take advantage of any of this

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WLS 8.1: Under the Hood

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Queues (part 1)

Queues have a queue of pending tasks, and a group ofthreads to consume them and do the work

Most queues are only created when theyre necessary

One admin queue

JMX weblogic.Admin

console (HTTP)

Admin server to managed server traffic

One non-blocking queue (used to be several) In-memory replication

Transactions

Stateful session bean replication

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Queues (part 2)

Multicast queue

JNDI announcements System queue

Internal tasks such as HTTP session invalidation

Development mode poller for application updates

Transaction timeouts

JMS dispatcher queue

Sends JMS messages

JMSStore IO queue

Reads/writes persistent messages, etc.

JMS Timer queue

Delivery timeouts, etc.

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Queues (part 3)

Default queue

Handles user requests

User-defined queues

In 8.1, can define on:

EJB (including MDB)

EJB JAR

Servlet (including JSP)

WAR

Used for performance management for apps Used to defeat deadlocks on multi-hop requests

A request only switches threads/queues on remote calls(to another server, or servlet to EJB)

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Threads (part 1)

Listen threads

plain text (t3, http, etc.)

secure (t3s, https, etc.)

admin port (used to be mixed with secure)

network channels

Health monitor thread

More information available when using JRockit

Timed event generator (1 thread only)

Cluster heartbeat

Scheduled jobs

Only high priority thread in the whole server

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Threads (part 2)

Socket Reader threads % of threads in the default queue

Synchronous reading when using Java IO (havent got all the kinksworked out for NIO)

Would like to have 1 thread per socket

OK for a client, not so good for a server Asynchronous when using a performance pack

Fewer threads are necessary due to improved affinity andconservation of sockets

Thread dumps

weblogic.Admin THREAD_DUMP kill -3

Ctrl-Break

JRockit management console

J2SE 1.4 has better deadlock detection then most J2SE 1.3 VMs

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JDBC

No JDO support planned

RowSet support introduced in 8.1

Supports disconnected operation (get data, manipulate, sendback and apply and lose any intervening changes)

Supports disconnected optimistic operation (get data,manipulate, send back, server checks for intervening updates)

Can serialize as objects or to XML

WLS aggregates changes and uses bulk updates

Supports arbitrary SQL, some support for updating a multi-tablequery

RowSets will likely be expanded in future releases

caching, explicit PKs/FKs, Object/XML wrappers, QL, etc.

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WebLogic 8.1 Platform Timeline

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Timeline

WebLogic Server 8.1 final and JRockit 8.1 final due atthe end of March

WebLogic Platform 8.1 final due by the end of Q2(JavaOne?)

Next release is Diablo

beta Q1 2004

final Q2 2004

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Bonus Slide

If you havent heard:

It is now free to develop on WebLogic

You can download a 1-year, 20-connection license

For $599, you get quarterly CD releases, support,education materials, and WebLogic Developers Journal

For $4659 you get all that plus a copy of JBuilder 8WebLogic Edition with JBuilder Enterprise support

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Questions?

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Download slides at:

http://www.chariotsolutions.com/presentations.html

Presentation feedback at:

http://www.chariotsolutions.com/feedback.html

Web Logic 81

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