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Similaire à BizTalk Server 2009 ESB Guidance 2.0 By Kevin Gock
Similaire à BizTalk Server 2009 ESB Guidance 2.0 By Kevin Gock (20)
BizTalk Server 2009 ESB Guidance 2.0 By Kevin Gock
- 1. ESB Guidance 2.0 Kevin Gock http://www.itfocus.co.nz
- 2. Agenda Enterprise Service Bus (ESB) ESB Guidance Itinerary Dynamic Endpoint Resolution Web Services ESB Management Portal Demo Questions?
- 3. Definition of ESB Implementation 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
- 4. 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
- 5. What does an ESB look like?
- 6. 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
- 7. Installation Install: 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
- 8. What is an Itinerary? XML defining a sequence of Services to execute Sent by a client as a SOAP header along with message
- 9. How does an Itinerary work? Client Sends Itinerary and Message (both flow together for each Service executed) ESB Pipeline sets Itinerary values as message context properties Itinerary Subscribers: Orchestration or ESB Agent (name=Transform/Routing) Filter for specific name, type, state
- 10. Why have an Itinerary? Makes message highly distributable. Ability for any ESB container to process the message Caller must be changed to pass Itinerary
- 11. Dynamic Endpoint Resolution Allows an Itinerary service endpoint to be resolved, dynamically at runtime. Supported Resolvers: - UDDI - LDAP - Xpath - BRE - Static
- 12. Dynamic Endpoint Resolution Example Itinerary – Resolvers XML Fragment: Processing: Transform message using BRE Send the Order to static file location location resolved by using UDDI search Send the response back to caller
- 13. Why use Dynamic Endpoints? 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 WebServiceA UDDI would be useful to lower maintenance by changing the UDDI registry only.
- 14. Demo - ESB in Action!
- 15. Demo - BRE Resolver uses Itinerary’s data (policy=ResolveMap) for BRE to set transform
- 16. Demo – STATIC, UDDI Itinerary – Resolvers XML Fragment: STATIC defines the full location so dynamic resolution doesn’t occur UDDI resolves to physical drive location
- 17. Creating Itineraries Use VS 2008 with the ItineraryDsl project type Validate and Export to XML
- 18. Web Services Itinerary On-ramp Resolver Transformation Exception Handling UDDI BizTalk Operations
- 19. ESB Management Portal Demo
- 20. 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!
- 21. Questions?
- 22. Thank you! Kevin Gock http://www.itfocus.co.nz
Notes de l'éditeur
- Another defintion of ESB – “Early Spring Beer”
- Example of Service Registry: UDDI (Universal Description, Discovery and Integration) is used in the ESB Management Portal which I will demo
- Purpose is to make implementing an ESB using BizTalk easier ESB Guidance 2.0 released January 14 as CTP2ESB Guidance is a little like the Enterprise Library is to .NET Development. ITINERARY: XML Message with a list of services to executeDYNAMIC: Finding an endpoint (like a web service location) at runtime, rather than hard coding itMSG ROUTING: Use the BRE to determine where to route the messageEND B3: One feature which I will leave out is SOA Governance Integration as it requires 3rd party tools. Its mainly about monitoring polices, usage information, service level agreements.
- Use Hyper-V and snapshotsThere are 2 main installation options:Use Pre-compiled binaries (recommended, unless you need to change the source for some reason)Use Source CodeESB Configuration Tool sets up the ESB Core and Exception Handling Web Services and DBs
- There are 3 key elements which are used by the filter for processing which are the name, type and state. There are currently 2 ESB Agent Orchestrations which subscribe to the Transform and Routing for processing of these services.The last service is processed outside of the generic ESB components.
- 1) When a service is executed it is up to the Itinerary Subscriber to advance the Itinerary from the current step to the next step. There is a helper classes to do this.
- When a message carries the list of services to execute with it, it decentralises the processing making the message more distributableAs an example a message have an itinerary for different environments, test, uat etc.
- To resolve UDDI for example you would specify in the Itinerary, the UDDI search criteria which would result in a resolved location such as a file location.
- This windows application is part of the ESE Guidance. You can combine a Message and Itinerary separately can make a Web Service call.Run the programThe first service in the Itinerary transformed the order by having a SubmitOrder element wrapped around the messageThe second service routed the message to the out folderShow the message generatedShow the ESB.Agent project Delivery: Receive Msg Filter Expression Resolve Shape – Resolves message using helper class and set the TransportLocation and Transport Type Set Delivery Shape – Sets the Delivery properties of the messageThe third message ran an orchestration which returned the response.
- Show UDDI searching on the Provider “Microsoft.Practices.ESB“, Service is “OrderFileServicev3“
- All the key features are exposed as web services.Itinerary:accept external messages and submits them for processingResolver: Look up end points and resolve themBizTalk: exposes information about BizTalk hosts, orchestration, applications, and status.
- Exception Management:Go to TestData Folder and drop “Request_EAIProcessHandler.xml” to “RequestPort” folderCheck the PostDecline and RepairSubmit folderException Explanation:The EAIProcess orchestration determines there is an exception and constructs a Fault message using ESB Exception classes. The orch then publishes the Fault message to the BizTalk Message Box through a direct-bound port, and the orchestration endsThere is a custom fault handler orchestration EAIProcessHandler, which subscribes to a FaultCode of 1000 and processes it.3) Edit fault in Portal and resubmit with a “Unit Price”4) The PostApproval folder will have the approved RequestRegistry (UDDI):Click Registry Tab, Global.ESB dropdownPublish “EAIProcessHandler.RepairSubmit” ServiceCheck in UDDI Services Tab and search “EAIProcessHandler.RepairSubmit”Drill down to the Access Point.My Settings: Enable the applications by default they were off.