Unit Objectives •This unit discusses: –Main themes –Architectural overview of WebSphere Application Server V6 at run time –Architectural overview of WebSphere Application Server V6 at administration time –Overview of WebSphere Application Server V6 profiles
Main Themes •Platform enablement –Developing the e-business operating system for enterprise integration –Foundation for other middleware products •Ease of use –Reduced complexity, and increased integration of roles •Simplify development and deployment of applications with new WebSphere Rapid Deployment
•Enterprise Class Deployment –Building the Next Generation application server with the qualities of service required by enterprise class deployment •Standards-based architecture and programming model –J2EE 1.4, Web services, Service Data Objects (SDO), and so forth
Version 6 Packaging
WebSphere Application Server Basics •WebSphere Application Server –Is a platform on which Java-based business applications run –Is an implementation of the Java 2 Enterprise Edition (J2EE) specification –Provides services (database connectivity, threading, workload management, and so forth) that can be used by the business applications
WebSphere Architecture Runtime Browser
HTTP Server HTTP(S)
Embedded HTTP Server
HTTP(S)
HTTP Server Plug-in
Java Client
Application Server EJB Container
Web Container Servlets
JSPs
RMI/IIOP
EJBs
JDBC
Web Services Engine
Messaging Engine Application Databases Application Data
Plug-in Configuration File
SOAP/HTTP(S)
RMI/IIOP
Dynamic Cache
Name Server
Security
Data Replication
JMX
etc.
JMS Client
Web Services Client SOAP/JMS
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JDBC Providers •Provide the JDBC driver implementation for database access –Type 2 JDBC Drivers (Thick) •Require the database client software on the client node to connect to the database server
–Type 3 JDBC Drivers (Net protocol) •Require server side code to map net protocol to native database
–Type 4 JDBC Drivers (Native protocol) •Connect directly to the database using its native protocol
•XA Drivers support transaction recovery
Client Node
JNDI
Connection Connection Pool Pool
JDBC Driver
DataSource
JDBC
Database Client
Database Server
Data Sources •Data sources can improve performance and portability for database access –Standard and XA data sources •Connection pooling is provided by two parts: –J2C connection manager –Relational resource adapter
Enhanced EAR • Enterprise archive containing J2EE artifacts plus resource information needed to install on the WebSphere Application Server V6 – JDBC resources (datasources) Enhanced EAR Resources – Class loader Enhanced J2EE App. – JAAS authentication aliases EAR EAR Properties – Shared libraries – Virtual host information • Benefits: Improved productivity – Application resources/properties come with the application – Application install process creates the necessary resources within the server or cluster – Moving application from one server to another also moves the resources • Support integrated with the IBM Rational Tooling (IRAD) and AST – Found on Deployment page of application deployment descriptor
WebSphere Architecture Administration Application Server
SOAP/HTTP
HTTP(S)
Embedded HTTP Server
Web-based administrative console
Web Container Servlets
JSPs
Admin Service
EJBs Admin MBeans
Admin application
Web Services Engine
Messaging Engine XML Configuration Files
Dynamic Cache
Name Server
Security
Data Replication
JMX
etc.
C:\> wsadmin RMI/IIOP
wsadmin command-line client
EJB Container
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WebSphere Profiles Overview •Profiles are a set of files that represent a WebSphere Application Server configuration •WebSphere Application Server files are split into two categories: –Product files •Set of shared read-only static files or product binaries shared by any instances of the WebSphere Application Server product
–Configuration Files (profiles) •Set of user-customizable data files •Files include: WebSphere configuration, installed applications, resource adapters, properties, log files, and so forth WebSphere Product Files
Profiles -AppSrv01 -AppSrv02
. . .
WebSphere Profiles Benefits •Benefits of profiles: – Each profile uses the same product files – Simpler than multiple WebSphere installations • Less disk space • Simplifies application of product updates AppSrv01
AppSrv02
specified by
specified by
Managing Profiles •Profiles should be managed through one of the tools provided –Profile Creation Wizard •Provides a GUI interface for creation of profiles
–wasprofile script •Provides a command line tool to manage profiles
Unit Summary Having completed this unit, you should be able to: •Introduce high-level architecture of WebSphere Application Server V6 •Introduce Runtime and Administration Architecture of WebSphere Application Server V6 •Describe how WebSphere profiles allow several server instances to share the same set of product binaries
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ÅDeployer. â¢Deploys, configures and runs EJBs and Web applications. Application. Assembler. Deployment Environment. Node. Application Server JVM. Admin.
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