Websphere architecture 1

© Copyright IBM Corporation 2006Course materials may not be reproduced in whole or in part without the prior written permission of IBM. 4.0.2

Architectural overview:Stand-alone

IBM Confidential

© Copyright IBM Corporation 2006

Unit objectives

After completing this unit, you should be able to:

●Describe the architectural runtime view of WebSphere Application Server V6.1●Describe the administrative view of WebSphere Application Server V6.1●Explain WebSphere Application Server V6.1 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 – A platform on which Java-based business applications run– 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

Hardware, Operating System, Database, Network, Storage

Application Server

Application


0 of 101 of 10

WebSphere architecture runtime

Browser


0 of 101 of 102 of 10

HTTP Server

HTTP(S)


Browser


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HTTP Server

HTTP(S)

Plug-in Configuration File

Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets

HTTP(S)HTTP Server Plug-in


Browser


0 of 101 of 102 of 103 of 104 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Browser

EJB Container

EJBsRMI/IIOP


0 of 101 of 102 of 103 of 104 of 105 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Browser

EJB Container

EJBsRMI/IIOP

ApplicationDatabasesApplicationData

JDBC


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HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Messaging Engine

Dynamic Cache Name Server Security

Data Replication JMX etc.

Web Services Engine

Browser

EJB Container

EJBsRMI/IIOP


JDBC


0 of 101 of 102 of 103 of 104 of 105 of 106 of 107 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Messaging Engine



Web Services Engine

Browser

EJB Container

EJBsRMI/IIOP


JDBC


0 of 101 of 102 of 103 of 104 of 105 of 106 of 107 of 108 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Messaging Engine



Web Services Engine

Browser

EJB Container

EJBsRMI/IIOP

Java Client

RMI/IIOP


JDBC


0 of 101 of 102 of 103 of 104 of 105 of 106 of 107 of 108 of 109 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Messaging Engine



Web Services Engine

Browser

EJB Container

EJBsRMI/IIOP

Java Client

RMI/IIOP

Web ServicesClient

SOAP/HTTP(S)

SOAP/JMS


JDBC


0 of 101 of 102 of 103 of 104 of 105 of 106 of 107 of 108 of 109 of 1010 of 10

HTTP Server

HTTP(S)


Application Server

Em

bedded HTTP

Server

Web Container

JSPsServlets



Messaging Engine



Web Services Engine

Browser

JMSClient

EJB Container

EJBsRMI/IIOP

Java Client

RMI/IIOP

Web ServicesClient

SOAP/HTTP(S)

SOAP/JMS


JDBC


DataSource

Database Client Database

Server

Client Node

JNDI

JDBC Driver

JDBC

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

Connection Pool

Connection Pool


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

App

licat

ion

Relational Resource Adapter

Datasource

J2C Connection Manager

DatabaseConnection Factory

Connection Pool

Connection Pool


Enhanced EAR● Enterprise archive containing J2EE artifacts plus resource information

needed to install on the WebSphere Application Server V6 – JDBC resources (datasources)– Class loader– JAAS authentication aliases– 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

● Warning: Can possibly cause problems if unintended application scoped resources are used in production.– Enhancements can be removed or ignored during application installation

Enhanced EAREnhanced EAR

J2EE App.EAR

Properties

ResourcesEnhancedEnhanced

EAREAR


1 of 4

Application Server

Em

bedded HTTP

Server

Web Container

JSPs

EJB Container

EJBs

Messaging Engine



Web Services Engine

Servlets

WebSphere architecture administration


2 of 4


Application Server

Em

bedded HTTP

Server

Web Container

JSPs

EJB Container

EJBs

Messaging Engine



Web Services Engine

Servlets

Admin application

AdminService

Admin MBeans

XML Configuration

Files


2 of 43 of 4


Application Server

Em

bedded HTTP

Server

Web Container

JSPs

EJB Container

EJBs

Messaging Engine



Web Services Engine

Servlets

Admin application

AdminService

Admin MBeans

XML Configuration

Files

Web-basedadministrative console

HTTP orHTTPS


2 of 43 of 44 of 4


Application Server

Em

bedded HTTP

Server

Web Container

JSPs

EJB Container

EJBs

Messaging Engine



Web Services Engine

Servlets

Admin application

AdminService

Admin MBeans

XML Configuration

Files

Web-basedadministrative console

HTTPor HTTPS

wsadmincommand-line client

SOAP/HTTP

RMI/IIOP

C:\> wsadmin


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

WebSphereProduct 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

AppSrv01specified by

specified by

AppSrv02


Managing profiles

●Profiles should be managed through one of the tools provided

– Profile Management tool (PMT) Wizard• Eclipse-based GUI tool for creating profiles• Gathers user input and invokes the “manageprofiles” command line tool

to create the profiles• Replaces v6.0 Profile Creation Tool

– manageprofiles script• Command line interface for profile management functions• V6.0 wasprofile command line tool has been enhanced and renamed to

manageprofiles script in V6.1


Checkpoint questions

1. Which of the following provides an environment for running servlets?

A. Client moduleB. Web moduleC. EJB module

2. Which type of JDBC driver is considered a “thick” driver?A. Type 2B. Type 3C. Type 4

3. Which of the following are components contained within the application server’s JVM?

A. HTTP Server plug-inB. Embedded HTTP ServerC. DB2 database


Checkpoint solutions

1. Which of the following provides an environment for running servlets?

B. Web module

2. Which type of JDBC driver is considered a “thick” driver?A. Type 2

3. Which of the following are components contained within the application server’s JVM?

B. Embedded HTTP Server


Unit summary

Having completed this unit, you should be able to:

●Describe the architectural runtime view of WebSphere Application Server V6.1●Describe the administrative view of WebSphere Application Server V6.1●Explain WebSphere Application Server V6.1 profiles

Websphere architecture 1

Documents

generation application

jdbc providersprovide

services database connectivity

jdbc drivers thickrequire

jdbc driver implementation

database accesstype

database servertype

pluginconfiguration