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Develop and Deploy Multi-Tenant Web-delivered Solutions Using IBM Middleware: Part 7: A Web service mediation proxy pattern for routing multiple tenant requests using WebSphere Enterprise Service Bus

Indrajit Poddar (ipoddar@us.ibm.com), Software Architect, IBM
Indrajit Poddar
Indrajit Poddar (IP) is a member of the Strategy, Technology, Architecture, and Incubation team at IBM Software Group Strategy, where he leads several integration PoCs for building composite business services delivered in the Software-as-a-Service (SaaS) model.
Devaprasad Nadgir (devaprasad@in.ibm.com), IBM Certified Senior IT Architect, IBM　　
Nadgir
Devaprasad is a Certified Senior IT Architect and works out of India Software Lab, Bangalore. He is currently involved in Service Registry and Federated SOA Governance initiatives in IBM Software Group. His areas of interest also include Architectural Methods, Cloud Computing, Virtualization and Software-as-a-Service. Check out his blog where he shares some of his insights and technology trends.
Sobha R. Warrier (sobharwa@in.ibm.com), SOA Architect, IBM　　
Sobha R. Warrier
Sobha R. Warrier is an SOA Architect at the IBM India Software Lab in Bangalore, India. She is currently part of WebSphere B2B Product group. You can reach Sobha at sobharwa@in.ibm.com.

Summary:  Part 1 of this series describes multi-tenancy and several technical challenges faced by service providers for deploying multi-tenant web-delivered solutions. In part 4, we presented a technical challenge on how to enable multi-tenancy for existing single tenant Web services with little or no code changes for shorter time to market and lower costs. We presented a mediation approach for addressing this challenge and introduced three implementation options using multiple IBM middleware products. In this tutorial, we describe detailed implementation steps for utilizing WebSphere Enterprise Services Bus for enabling multi-tenancy for existing Web services.

View more content in this series

Date:  29 Jul 2009
Level:  Intermediate
PDF:  A4 and Letter (314 KB | 18 pages)Get Adobe® Reader®

Activity:  7933 views
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Before you start

About this tutorial

In this tutorial, we will describe how to exploit the routing capability of WebSphere Enterprise Service Bus in conjunction with dynamic searches for service endpoint metadata from WebSphere Service Registry and Repository for enabling multi-tenancy. We will also show how to integrate the routing capability with access control functions by integrating with Tivoli Access Manager.


Figure 1. Enabling multi-tenancy for a Web service using a WESB mediation module
Enabling multi-tenancy for an example web service using a WESB mediation module

In part 4, we described a scenario and a use case with Sam Peters as the service provider for the Jivaro bank multi-tenant application. In this tutorial, we will show how Sam Peters, enables multi-tenancy for his existing single tenant Credit Check Web service through the following steps:

  1. Create a mediation module in WESB for routing tenant requests (Section 3)
  2. Add tenant specific service metadata for routing to WSRR (Section 4)
  3. Add authorization policies in Tivoli Access Manager (Section 5)

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Prerequisites

Sam Peters will use the following tool to develop the mediation approach:

  1. WebSphere Integration Developer (WID) v6.1

following software to deploy the mediation approach:

  1. WebSphere Enterprise Service Bus (ESB) (or process server) v6.1
  2. WebSphere Service Registry and Repository (WSRR) v6.1
  3. Tivoli Access Manager (TAM/TDS v6)

The following software to deploy multiple instances of the credit check Web service, one per tenant:

  1. WebSphere Portal Server v6
  2. WebSphere Process Server v6.1

Please refer to the Resources section for further details on the installation and integration of these products.

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static.content.url=http://www.ibm.com/developerworks/js/artrating/
SITE_ID=1
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ArticleID=416885
TutorialTitle=Develop and Deploy Multi-Tenant Web-delivered Solutions Using IBM Middleware: Part 7: A Web service mediation proxy pattern for routing multiple tenant requests using WebSphere Enterprise Service Bus
publish-date=07292009
author1-email=ipoddar@us.ibm.com
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author2-email=devaprasad@in.ibm.com
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