JBoss Application Server 7

Ray Ploski
Principal Solutions Architect
ray@redhat.com
twitter:@rayploski

JBoss Application Server 7

Sunday, June 19, 2011

JBoss AS Timeline
JavaEE 6 Web Profile, JDK6
JBoss AS 7.0

JBoss AS 6.0

JavaEE 5 certification, JDK5 & 6
JBoss AS 5.1

J2EE 1.4 certification JBoss AS 5: Alphas, Betas, CRs
JDK 1.4 and finally 5.0.0.GA, 5.0.1.GA
JBoss Versions

JBoss AS 4.2.0 – 4.2.3

JBoss AS 4.0.0 – 4.0.5 JEE 5.0 compatible,
not certified (95% pass)
JDK5.0
JBoss AS 3.2.0 – 3.2.8
Time

2003 2004 2005 2006 2007 2008 2009 2010 2011

J2EE 1.3, JDK 1.3


Motivations For AS7

• Improve Usability
• Increase Manageability
• Simplify Configurations
• Highly Performant - GO FAST!


Key Features of AS7


Key Features of AS7
• Fast and Lightweight
• Supports domain (multi-node) management
• Multiple consistent management interfaces
• CLI, Java API, HTTP API, Console
• Unified, user-focused configuration
• Modular
• Only APIs, no AS implementation exposure
• True isolation


Two Operational Modes


• Standalone
• Traditional JBoss single JVM server
• Management facilities IN-VM


• Standalone
• Traditional JBoss single JVM server
• Management facilities IN-VM
• Domain
• Multi-JVM, multi-server model
• Management coordinated by Domain
Controller Process
• Multiple server instances (JVMs) per Host
• Full lifecycle managed by Process Controller


Standalone Mode
• Standalone is a single AS process for use
in development, where the additional
management functionality is not required

• Provides a similar development
experience to previous versions of the
AS, allowing for a deployment to be
dropped in the deployments folder and
automatically deployed

• Can still be managed by the same tools
and API's as domain mode


Domain Mode
• Easy management of multiple AS instances
• Managed from a single point, all have
access to the same domain configuration

• Allows for management and configuration
updates to be pushed out to all servers

• Domain Mode has three separate
processes:
• Process Controller
• Host Controller
• Server Instance


Domain Mode Processes


• Responsible for managing and starting /
restarting processes

• Extremely simple, not much that can go wrong


• Responsible for managing and starting /
restarting processes

• Extremely simple, not much that can go wrong
• Host Controller
• One host controller is the domain controller,
the rest are slaves

• Domain controller is responsible for pushing out
configuration changes over the domain


Domain Mode

9

My File’s Have Changed?


My File’s Have Changed?

•Where are they?


File Layout File Layout
!   jboss-7.0.0.Beta3
!  bin
! standalone.conf Standalone Mode JVM Parameters

! standalone.sh Standalone Mode

! domain.sh Domain Mode
! jboss-admin.sh Command Line Interface

!  modules Static JBoss Module Definitions

!  standalone
!   configuration
! standalone.xml Standalone Unified Configuration

!   deployments File System Deployment

!   logs
!   data Internal Data (includes repository)


File Layout - Domain
File Layout (cont)

!   jboss-7.0.0.Beta3
!  domain
!   configuration
! domain.xml Domain Wide Unified Configuration
! host.xml Host Controller Configuration

!   servers
!  server-one Server One JVM instance data
!  logs
!  data
!  server-two Server Two JVM instance data
!  logs
!  data


Architecture


JBoss AS 7 Architecture
JBoss
MSC DMR Controller Threads
Modules

Server Controller Service

Deployers VFS Jandex Reflect Cache Repository

Core Infrastructure

FS Scanner

Transaction
Datasource

Messaging
Connector

Remoting

Security

JAX-RS
Naming

OSGi
EJB3

Weld

SAR

Web

JMX
JPA

WS
EE

Subsystems


Classloading
JBoss Modules


Hierarchical CL


Modular CL


JBoss Modules


JBoss Modules
• Provides extremely fast modular class loading
• O(1) Dependency resolution

• Concurrent CL (lockless in most VMs)


JBoss Modules


• “Pure” modular class loading
• Modules only see what they import (includes JDK classes!)


JBoss Modules



• External module definitions
• Don’t have to break open the JAR


JBoss Modules




• Dynamic
• Modules can be redefined


JBoss Modules




• Dynamic
• Modules can be redefined

• Extensible
• JBoss OSGi implemented on modules


modules.xml


User Deployments


User Deployments
•User deployments are modules too


User Deployments
•Sets up dependencies on some
modules automatically (e.g. JPA,
Hibernate, WebServices)


User Deployments
•Sets up dependencies on some
modules automatically (e.g. JPA,
Hibernate, WebServices)

•The user can also set up their own
dependencies on app server
modules


User Deployment Details


• Each sub-deployment in an ear is it's own module


• Sub-deployments in an EAR do not have access
to other sub-deployments by defaUlt



• Allows for individual ejb-jar's to have
dependencies on different versions of classes




• Also provide an relaxed isolation mode, which
automatically set up dependencies between all
the sub deployments in the ear




• Also provide an relaxed isolation mode, which
automatically set up dependencies between all
the sub deployments in the ear

• Dependencies can be set up using the manifest,
a custom deployment descriptor, or on a global
level


JBoss Modular Service
Controller (MSC)


Modular Service Container
•Small, lightweight & efficient
•Highly concurrent & scalable state machine
•Only two non- Service Builder

error, non- Service Registry

transition states Service Controller
- stop & start
Service Deps Value Listeners Injectors

Concurrent Service Container


Services


Services
• In AS7 almost everything is a service


Services
• Services are objects that can be started and
stopped


Services
stopped

• Services can have dependencies on other services


Services
stopped

• When all a services dependencies are satisfied it
will attempt to start


Services
stopped


• If a dependency going to be stopped, then MSC
will stop all dependent services first


Services
stopped


• If a dependency going to be stopped, then MSC
will stop all dependent services first

• Services can inject dependent services


Everything is a Service!


•As mentioned previously almost
everything in AS7 is a service, including:
• EJB's (actually 2+ services)
• JNDI Bindings
• Servlets
• The deployment itself


•As mentioned previously almost
everything in AS7 is a service, including:
• EJB's (actually 2+ services)
• JNDI Bindings
• Servlets
• The deployment itself
•Individually shut down and restart, with
all dependencies being maintained


JEE
• Still using the same underlying projects, but
with completely new integration code.


JEE

• Boot process has been highly optimized


JEE

• Annotation scanning is done by scanning
the deployments bytecode, preventing
expensive class loading unless it is absolutely
necessary


JEE

• Annotation scanning is done by scanning
the deployments bytecode, preventing
expensive class loading unless it is absolutely
necessary

• Services start asynchronously where possible
(e.g. Weld and Hibernate can both be
starting at the same time)


Dynamic Model
Representation
(DMR)


Management - DMR


Management - DMR
• Central De-typed Management API
• All management operations operate with/on DMR

• Backwards compatible!


Management - DMR


• Can be used to control a single standalone server
or an entire domain


Management - DMR


or an entire domain

• De-types (i.e. string based) API uses a small set of
Java classes


Management - DMR


or an entire domain

Java classes

• Various transports (Java Remoting, JSON over HTTP)


Management - DMR


or an entire domain

Java classes

• Various transports (Java Remoting, JSON over HTTP)
• All management interfaces are based on this API


Dynamic Model Representation (DMR)

• Represents simple and complex types
• int, long, big int, double, big dec, boolean, string, bytes, list,
object, property, expression

• Auto-converts like dynamic languages
• Self describing
• Convertible to/from JSON
• Also has a defined binary protocol (optionally b64)

Management
•ONE configuration file
• standalone.xml / domain.xml

• Management API that allows for persistent
changes to the configuration

• Management API can manage all servers in
the domain

• Management console to provide user friendly
management in a web browser

• Command line tool for use in scripts

Management via Configuration
User-focused Configuration
<bean name="TransactionManager"
class="com.arjuna.ats.jbossatx.jta.TransactionManagerService">
<annotation>@org.jboss.aop.microcontainer.aspects.jmx.JMX
(name="jboss:service=TransactionManager",
exposedInterface=com.arjuna.ats.jbossatx.jta.TransactionManagerServiceMBean.class,
registerDirectly=true)</annotation>
<annotation>@org.jboss.managed.api.annotation.ManagementObject
(name="TransactionManager",componentType=@org.jboss.managed.api.annotation.ManagementCompone
nt(type = "MCBean", subtype =
"JTA"),targetInterface=com.arjuna.ats.jbossatx.jta.TransactionManagerServiceMBean.class)
</annotation>

<property name="transactionTimeout">300</property>
<property name="objectStoreDir">${jboss.server.data.dir}/tx-object-store</property>

<subsystem xmlns="urn:jboss:domain:transactions:1.0">
<recovery-environment socket-binding="txn-recovery-environment"
status-socket-binding="txn-status-manager"/>
<core-environment socket-binding="txn-socket-process-id"/>
</subsystem>


Management via API


Management via Command Line



• Scriptable command line management tool



• Uses the management API internally



• Allows access to high level user friendly
commands:
create-jms-queue –-name testQueue



• Allows access to high level user friendly
commands:
create-jms-queue –-name testQueue

• Also allows direct access to the domain
model, giving access to the full functionality
of the management API


Testing with Arquillian

•AS7 supports easy testing with ArquillIan
•Arquillian is used both in the internal test
suite and by end users to test their
applications

•Combined with the fast startup speed of
AS7 testing in the container is just as easy
as running normal JUnit tests.


Performance


Boot Time Results


Memory Comparison


WHEN?
• AS 7.0 currently in Beta3
• 7.0 Final (EE Web Profile)
• 7.1 Final (EE Full Profile)
JBoss AS 7.1 will be the base for JBoss
Enterprise Application Platform 6 (EAP)


JBoss AS v EAP


More Information
• Webinars: http://www.jboss.org/webinars
• This Deck: http://bit.ly/BABootcampAS7
• Homepage: http://www.jboss.org/jbossas
• Users Forum: http://community.jboss.org/
en/jbossas/as7_users

• Using Nightly Builds: http://
community.jboss.org/thread/167590


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JBoss Application Server 7

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