1 / 37

Extending mySAP.com with COM+ and .NET Peter Russo Program Manager Enterprise Program Management Microsoft Corporation

Extending mySAP.com with COM+ and .NET Peter Russo Program Manager Enterprise Program Management Microsoft Corporation. Agenda. Conversing with R/3 R/3 Protocols Formats Gotchas Technologies SAP DCOM Connector Connector Architecture Mechanics Administration Configuration & Tuning

kellsie
Download Presentation

Extending mySAP.com with COM+ and .NET Peter Russo Program Manager Enterprise Program Management Microsoft Corporation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Extending mySAP.com with COM+ and .NETPeter RussoProgram ManagerEnterprise Program ManagementMicrosoft Corporation

  2. Agenda • Conversing with R/3 • R/3 Protocols • Formats • Gotchas • Technologies • SAP DCOM Connector • Connector Architecture • Mechanics • Administration • Configuration & Tuning • Troubleshooting • 4.6d Features • tRFC, qRFC, Outbound Calls • Futures

  3. Protocols • Native • GUI (Diag) • RFC • HTTP (In 6.2.0) • Batch (File Transfer) • Batch Input • Direct Input • ALE (File Transfer or RFC)

  4. Protocols (cont) • Each has a proprietary format • Each is platform independent • RFC client libraries for all platforms • Each meets different business programming needs • Implementation overlap • RFC calls can be wrapped as IDOCs • Screen transactions can be wrapped as RFCs • IDOCs can be submitted via RFC

  5. Formats • RFC has COM, CORBA, Java wrappers • SAP COM Connector • Actional • Visual Age • SAP has defined an XML format for IDOCs (4.6B or greater) • SAP Business Connector exposes RFC invocations as XML

  6. Gotchas • Guaranteed delivery into and out of R/3 is not trivial • tRFC mechanism provides exactly once guarantees (not a two phase commit) • Supports both inbound and outbound • Restricted use of RFC • Strict programming conventions for both client and server programs • If in order inbound (to R/3) message delivery is also required, SAP provides a queued version of tRFC called qRFC • 4.6c or greater versions of R/3

  7. Technologies • New features in the 4.6D SAP Com Connector (SAP) • tRFC and qRFC Support • Supports GUIDs as TIDs • Custom IDOC submission dll • Generic RFC server • BTS Connector Resource Kit (MS) • IDOC submission AIC • IDOC tRFC server component

  8. Connector Architecture • Components and Release Level • Technologies

  9. Connector Architecture - Components • Librfc32.dll (version 4.6d) • W2K SP1 - or • NT 4.0 (SP4 or greater) • NT Option Pack • MTS 2.0 (including SDK) • IIS 4.0 • Management Console (MMC) • MDAC 2.5 or greater • CC Administrator • Object Builder • VS 6.0 (SP4) or greater

  10. Connector Architecture -- MDAC • OLEDB • Componentized data access • Common abstraction for tabular data • Specialized extensions for OLAP, etc. • ADO (ActiveX Data Objects) • Simple high level interface to data objects • RDS (Remote Data Servcies) • Allows data to be passed across http/dcom to the client • Static “client-side” cursoring over result sets • Ability to return Recordsets from business objects across machine boundaries

  11. Connector Architecture – SAP Technologies • R/3 4.x features • Much lower latency by • streamlined communication technology • R/3 automatically switches between different operation modes with respect to workload • round-trip times are comparable with database request. • Clean up of user context without logoff • DCOM Connector automatically detects the version on the target system and uses these features

  12. Mechanics A View of the Object Life Cycle • Object Instantiation and MTS • Connecting to R/3 • Destination and Logon Handling • RFC pooling • Method Invocation • Data marshalling • Object Cleanup • Special Considerations for Transactions

  13. BO Mechanics - Object Instantiation R/3Application Server Clients MTS RFC DCOM Librfc32.DLL BAPI ABAP Objects ISAPConnector ITab Type Mapping RFC-C-API RFC-COM-API

  14. Mechanics - Object Instantiation • MTS runtime intercept all method calls prior to executing your code • Handle transaction management, layered security model, MTS-specific concurrency model • MTS puts its class factory between COM and you • MTS creates a context wrapper for each class instance that sits between the stub and you • Only visible concept in MTS is the package • Packages are a collection of in-process servers that trust one another • Security checks are performed for the package • No security checks are performed between components in a package

  15. MechanicsDestination & Logon Handling • Destination configuration • Destination property set in component at invocation • Default destination can be assigned to object • Gateway default destination (4.5a - ‘NONE’) is eliminated • User Mapping & Security (options) • Hardcode UserID & Password into the component :-( • Default UserID & Password with a destination in registry • Use roles and NT users to further control component access :-) • Collect explicit logon info from user & pass to component • Use single sign-on and internal R/3 mapping tables (4.6x)

  16. Mechanics - RFC Pooling R/3 RFC connection automatically provided by DCOM Connector from pool of connections when required by method invocation. DCOM RFC ResourceDispenser Void connection

  17. ADO-Recordset SAP-IRowset RDS-IRowset Mechanics Table Handling via RDS & ADO R/3Application Server Output Tables DCOM RFC BO BAPI ABAP Objects itab Dim myRS as Recordset Set Foo = New Bar1 Foo.GetCustList(‘*’, myRS)

  18. Configuration & Tuning • Connector Global parameters • Set in the Admin Consolevia Monitor -> Parameters • Set in System Environment • Connector Destination parameters • Set in the Admin Console via Destinations -> Edit • Connector Component parameters • Set in the Admin Console via Components • Set in MTS Management Console • R/3 RFC parameters • Set in R/3 profile

  19. Troubleshooting • RFC trace (set per destination) • Trace = 1 • RFCxxxxxx.trc • Dev_rfc.trc • TableDump = 1 • ST05 • SAPGUI debugging • Check MTS Security & Roles

  20. Troubleshooting • Debugging into R/3 • AdviseRFCGuiSink() Client Sapgui RfcGuiSink Librfc32.dll

  21. Review of RFC Quality of Service • RFC: • Synchronous call • Client waits until the processing is completed • Supports input and output parameters • Easy in ABAP: Call .... DESTINATION Dest ..... • Easy in C: RfcCallReceive() • Easy in VB and script: SAP DCOM Connector, SAP Automation, C call

  22. client client client server server server Review of RFC Quality of Service • Problem with RFC when errors occur: • Where did the error take place? • Should the failed call be repeated? Check data+ customizing and retry Can retry Don't retry

  23. Review of RFC Quality of Service: • tRFC • Guaranteed to execute only once • External tRFC is always synchronous • ABAP tRFC is asynchronous • Only supports input parameters • Easy in ABAP: Call ... DESTINATION Dest IN BACKGROUND TASK ...... • Easy in C: RfcCallIndirectEx () • Easy in VB: SAP DCOM Connector, C call • External program must ensure: • Transaction ID management, • Scheduling for retry after any errors • A particular order for execution cannot be guaranteed

  24. Review of RFC Quality of Service: tRFC client server RfcCreateTransID Get TID Store TID and DATA Insert TID, + Call Execution RfcIndirectCallEx Delete TID and DATA RfcConfirmTransID Delete TID

  25. Review of RFC Quality of Service: • qRFC • Guaranteed to execute only once and in the specified sequence • Execution is asynchronous • Not integrated in the ABAP runtime. qRFC is controlled by calls to system function module • In ABAP, you can choose between • queuing on the caller system: outbound queue (APO) • queuing on the called system: inbound queue (CRM) • The RFCSDK offers support for queues in the SAP system: • inbound queues for external clients, • outbound queues for external servers. • However, external programs can also perform their own external queuing (MSMQ, BizTalk....)

  26. Review of RFC Quality of Service: • qRFC continued: • External program must ensure : • Transaction ID management, • Scheduling for renewed submission after an error • “Someone” must activate the queue • SMQR for queue registration • Programmatic • SAP System may schedule a retry after errors for the execution

  27. tRFC and qRFC support in the 4.6d RFCSDK • tRFC, qRFC have been integrated into the DCOM Object Builder. • Requires tRFC and qRFC support in the R/3 target • Simply select level of service required when building the proxy • Note: only one level of service per proxy object • When you use the relevant options, the generated proxies expose the following new methods: • CreateNewTid() • QueueName() • Confirm() • ActivateQueue() • GUID’s can be used for TID’s • Facilitates connection with services that already associate GUIDS with messages/data

  28. COM for ABAP Service Outbound COM Gateway R/3Application Server Some COM Object (D)COM RFC

  29. SAP DCOM Connector Server Middleware : Details Outbound COM Gateway R/3Application Server Some COM Object NT-Service (D)COM RFC Generic stub Metadata (mapping table + type library of target)

  30. Details - (single threaded mode) Outbound COM Gateway CIP-C GW R/3Application Servers Some COM Object Com4Abap (D)COM Generic stub Metadata (mapping table + type library of target)

  31. COM for ABAP Service • Requirements: • R/3 • Pre-4.6d systems require transport of function group • Can be transported to 3.x systems • Connector server • W2K SP1 • NT4, SP5, MTS, MDAC 2.5

  32. What’s next? • .Net Extensions to the Connector • Soap enabled Web Services • Managed Classes • Transparent upgrade to R3 6.2.0 • VS 7 Integration

  33. The SAP .Net Connector • Allows to easily build .NET Applications to integrate with mySAP Solutions using Visual Studio.NET • Supports all Releases of R/3 and mySAP.comAccess the SAP Web Application Server from any .NET Application via SOAPAccess all SAP components via SAP RFC • Availability to be announced soon

  34. SAP .NET Connector Architecture Visual Studio.NET mySAP Technology Microsoft .NET BOR DDIC Interface repository Component Generator Design time VB C++ C# … Common Language Runtime Web Services .NET Connector Runtime Application RFC RFC Layer Run time SOAP SOAP Layer .NET Connector Component (generated) SAP .NET Connector

  35. The SAP Add-In for Visual Studio.NET • Build .NET Applications for mySAP using Visual Studio.NET • .NET Web Services • ASP.NET Web Applications • WinForms Applications • SAP AddIn Visual Studio seamlessly integrates with Visual Studio.NET • Interactively add SAP BAPIs into any .NET application from within the IDE

  36. The SAP Add-In for Visual Studio.NET

  37. The End Questions ?

More Related