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ESB Guidance 2.0

Date post: 22-Feb-2016
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ESB Guidance 2.0. Kevin Gock http://www.itfocus.co.nz. Agenda. Enterprise Service Bus (ESB) ESB Guidance Itinerary Dynamic Endpoint Resolution Web Services ESB Management Portal Demo Questions?. Definition of ESB. - PowerPoint PPT Presentation
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ESB Guidance 2.0 Kevin Gock http://www.itfocus.co.nz
Transcript
Page 2: ESB Guidance 2.0

Agenda

• Enterprise Service Bus (ESB)• ESB Guidance– Itinerary– Dynamic Endpoint Resolution– Web Services– ESB Management Portal

• Demo• Questions?

Page 3: ESB Guidance 2.0

Definition of ESBImplementation of an infrastructure for enabling a service

oriented architecture (SOA)• Enterprise – Integrate assets of one company• Service – Provides services e.g. Routing, Transformation• Bus – Pluggable messaging endpoints

Page 4: ESB Guidance 2.0

Think of an ESB as ...

Collection of architectural patterns based on• Traditional enterprise application integration (EAI)• Message-oriented middleware• Web services• .NET and Java interoperability• Host system integration• Interoperability with service registries and asset

repositories

Page 6: ESB Guidance 2.0

What is the ESB Guidance?

• Enhancements to BizTalk• Developed by Patterns and Practices Team• Extends BizTalk– Itinerary-based invocation– Dynamic endpoint resolution– Message routing using registry or rules engine– Web Services– Fault Management and Reporting– Integration with 3rd Party SOA Governance Solutions

• Sample Applications

Page 7: ESB Guidance 2.0

InstallationInstall:• BizTalk ESB Core, Exception Handling packages• Itinerary Designer• ESB Configuration Tool• Documentation• Source Code

Requires:• Windows 2008 • SQL Server 2008• Visual Studio 2008 SP1• Enterprise Library 4.0• Unity Application Block 1.1

Use Microsoft Hyper-V for virtualisation

Page 8: ESB Guidance 2.0

What is an Itinerary?

• XML defining a sequence of Services to execute

• Sent by a client as a SOAP header along with message

Page 9: ESB Guidance 2.0

How does an Itinerary work?

1. Client Sends Itinerary and Message (both flow together for each Service executed)

2. ESB Pipeline sets Itinerary values as message context properties3. Itinerary Subscribers:• Orchestration or ESB Agent (name=Transform/Routing)• Filter for specific name, type, state

Page 10: ESB Guidance 2.0

Why have an Itinerary?

• Makes message highly distributable. • Ability for any ESB container to process the

message

Caller must be changed to pass Itinerary

Page 11: ESB Guidance 2.0

Dynamic Endpoint Resolution

Allows an Itinerary service endpoint to be resolved, dynamically at runtime.

Supported Resolvers:- UDDI - LDAP- Xpath - BRE- Static

Page 12: ESB Guidance 2.0

Dynamic Endpoint Resolution Example

• Itinerary – Resolvers XML Fragment:

Processing:1. Transform message using BRE2. Send the Order to– static file location– location resolved by using UDDI search

3. Send the response back to caller

Page 13: ESB Guidance 2.0

Why use Dynamic Endpoints?

1. Avoid consumers binding directly to a static endpoint. If endpoint changes then the consumer needs to change also.

Example:Orchestration calls static WebServiceA.NET app calls static WebServiceAUDDI would be useful to lower maintenance by

changing the UDDI registry only.

Page 15: ESB Guidance 2.0

Demo - BRE

• Resolver uses Itinerary’s data (policy=ResolveMap) for BRE to set transform

Page 16: ESB Guidance 2.0

Demo – STATIC, UDDI

• Itinerary – Resolvers XML Fragment:

• STATIC defines the full location so dynamic resolution doesn’t occur

• UDDI resolves to physical drive location

Page 17: ESB Guidance 2.0

Creating Itineraries

• Use VS 2008 with the ItineraryDsl project type• Validate and Export to XML

Page 18: ESB Guidance 2.0

Web Services

• Itinerary On-ramp• Resolver• Transformation• Exception Handling• UDDI• BizTalk Operations

Page 20: ESB Guidance 2.0

Summary

• Guidance implementing an ESB, best practices and reducing effort

• Loose coupling with Itinerary and Dynamic Endpoint Resolution

• Lots of useful Web Services• Management of the ESB via a Portal (faults, UDDI)• Still in CTP2 so there are outstanding issues• Source code for ESB and samples• Extensible and Free!


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