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- 1. Oracle Service Bus <InsertPicture Here> Essential Concepts
- 2. About This Course •Discuss several SOA requirements that can be addressed using a Service Bus • Explain the relationships between WSDL, XPath, XQuery, and ALSB • List some of the capabilities of an OSB Proxy Service • Describe the process of how OSB is configured and managed
- 3. Target Audience • Anyoneevaluating Service Bus technologies • SOA project team members: • Project Managers • Enterprise and Project Architects • Service Developers • System Administrators • Prior knowledge of fundamental SOA concepts recommended
- 4. Roadmap 1. Enterprise ServiceBus • Service Enablement • Service Orchestration • OSB Architecture 2. Service Bus Technologies 3. Proxy Service Development 4. Service Management and Monitoring
- 5. Why a ServiceBus? • The Point-to-Point problem Application Service Database Service Application EJB Service Service Application Service Service SAP SOAP SOAP
- 6. Location Transparency • Isolatefrom changes to service location Service Bus HostA New Hire SOAP SOAP Initialize Benefits Process Route to Service HostB HostB Initialize Benefits Service
- 7. Backwards Compatibility • Isolatefrom changes to service contract/interface Service Bus SOAP SOAP Customer Process Order Portal Transform Service <1.0> Message <2.0> 1.0 CSR App 2.0
- 8. Service Enablement • Allowmultiple protocols/messages to participate in a SOA Service Bus SOAP JMS Expense Transform Payroll Service Reimbursement Process FTP Transform Submit Expense Report Service Inventory SOAP Management JMS Transform Check Order App Status Service
- 9. Dynamic Routing • Usebusiness rules to determine destination service Service Bus New Employee SOAP Service HR Portal Title = SOAP Manger? Transform New Manager Service
- 10. Message Enrichment • Updatemessage using the response from another service ... <Customer History> ... Service Bus Insurance Call Transform Rate Quote Portal Service Message Service Get Customer History Service
- 11. Service Orchestration • Composenew services from existing ones Service Bus SOAP Account Validation Service 1 Purchase SOAP Validate Check Price Order Order 2 3 Service Process Service 4 Check Inventory Service
- 12. OSB to theRescue Oracle Service Bus Service Service Service Security Monitoring Management Authentication Dashboard Discovery Authorization SLA Alerts Change Mgmt. Message Reporting Import/Export Security Message Broker Content Based Dynamic Error Multiple Routing Transformations Handling Protocols Oracle WebLogic Server Oracle JRockit JVM
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- 14. Roadmap 1. Enterprise ServiceBus 2. Service Bus Technologies • Web Service Fundamentals • XML Fundamentals 3. Proxy Service Development 4. Service Management and Monitoring
- 15. Web Service DescriptionLanguage (WSDL) • Is an XML document • Generated by tools • Acts as a Web Service contract: • Elements Employee getEmployeeDept() • Operations Department getAllDepts() • Bindings • Ports ("endpoints") SOAPEmployeeService http://services.bea.com/employeeservice
- 16. Simple Object AccessProtocol (SOAP) • Is a remote function protocol based on XML • Used to invoke Web Services • Wraps messages in an envelope protocol • Supports headers and attachments Communications Envelope (HTTP, SMTP, FTP, etc.) Client Application SOAP Envelope <Headers/> </Body> Service SOAP Attachments
- 17. Universal Description, Discovery,and Integration (UDDI) • Metadata structure to classify and catalog services • SOAP interface to communicate with a service registry ("digital telephone book") Publish Service Service Registry Discover Service Service WSDL + metadata Development & Management Tools SOAP WSDL + metadata
- 18. XML Schema • Defines the structure of other XML documents • Is itself an XML document • Allows for faster message validation and processing • Has a unique ID called a namespace <xs:schema targetNamespace="http://schemas.bea.com/purchase" xmlns="http://schemas.bea.com/purchase" xmlns:po="http://schemas.bea.com/purchase" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="PurchaseOrder"> <xs:complexType> <xs:sequence> <xs:element name="Location" type="xs:string"/> <xs:element name="Items" type="ItemList"/> </xs:sequence> </xs:complexType> </xs:element> ... </schema> 1 011
- 19. XPath • Is astandard XML expression language • Used to identify or locate portions of an XML document • Attributes • Elements <PurchaseOrder> //PurchaseOrder/Item/@line <Item line="1"> <price>49.99</price> <quantity>3</quantity> </Item> <Item line="2"> //PurchaseOrder/Item/price <price>9.49</price> <quantity>1</quantity> </Item> </PurchaseOrder> 1 011
- 20. XQuery • Structuredlanguage for working with XML documents: • Strongly typed • Variables, operators, conditions, loops • Library and custom functions • Relational database queries • Supports XPath return <items> <items> for $item in //PurchaseOrder/Item <price>49.99</price> order by $item/title <price>9.49</price> return <price>{$item/price}<price> </items> return </items>
- 21. Extensible Stylesheet Language Transformations (XSLT) • Alternative to XQuery for XML transformations: • Loosely typed scripting language • Does not require XML Schema • More tolerant of malformed XML • Supports XPath <xsl:stylesheet> <xsl:template match="//Item"> <line id="1"> <line id="{@line}"> 49.99 <xsl:value-of select="price"/> </line> </line> <line id="2"> </xsl:template> 9.49 </line> </xsl:stylesheet>
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- 23. Roadmap 1. Enterprise ServiceBus 2. Service Bus Technologies 3. Proxy Service Development • Proxy Architecture • Workspace • Actions • Transformations 4. Service Management and Monitoring
- 24. Proxy Services Service Bus Outbound Proxy Service Business Service Inbound Service Producer Service Pipeline Business Service Consumer Service Producer Pipeline Business Service Service Producer Workspace Console
- 25. Supported Protocols • Protocols • SOAP over HTTP/JMS • HTTP/S • JMS • RMI/IIOP (EJB) XML • Tuxedo, MQSeries • Email (SMTP/POP/IMAP) SOAP over HTTP • FTP/Secure FTP • Custom • Oracle Adapters (framework + Adapters post 10gR3) XML • Message Formats • XML JMS • Text • Custom Binary (EDI, etc.) Text • SmartConnect Adapters • SAP SMTP • PeopleSoft • Siebel • Oracle • SWIFT
- 26. Workspace • Eclipse-based IDE • Define XML Schemas, WSDLs, and transformations • Configure business and proxy services • Track dependencies • Deploy to OSB server and test Workspace Beehive OSB ALRR XQuery Eclipse Web Tools J2EE XML WSDL HTML Eclipse Platform
- 27. OSB Perspective Explorer Palette Editor DRAG Properties Outline
- 28. Message Flow • Conditions/branches • Routing destinations • Request/response Pipelines • Actions: • Update/replace/delete message contents • Update message headers • Call another service Action • Raise error on client • Generate a report or alert • Invoke a Java class or EJB • Error handlers Pipeline
- 29. Transformations • XML toXML (XQuery or XSLT) • XML to Text/Binary (XQuery) • Binary to Binary (MFL)
- 30. Dependency Tracking • Selectan artifact • View References
- 31. Demonstration: Create aProxy Service Proxy Service approveLoan() Business ProcessLoan > $10,000? N Service approveLoan() Y Transform Business ProcessLargeLoan Message Service approveLoan() Please enable browser pop-ups!
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- 33. Roadmap 1. Enterprise Service Bus 2. Service Bus Technologies 3. Proxy Service Development 4. Service Management and Monitoring • OSB Console • Service Level Agreements • OSB Security • Advanced Routing • Product Interoperability
- 34. OSB Console • FullPipeline Design Capabilities Additionally: • Configure proxy service security • Monitor service health • Generate reports Edit Message • Define SLAs that trigger alerts Flow • Synchronize with a UDDI registry Monitor Alerts
- 35. Configuration Management • ChangeCenter • Atomic sessions • View & resolve conflicts • Undo tasks • Audit changes • Import/Export • Change propagation • Workspace synchronization • Test Console • Validate changes
- 36. Monitoring Dashboard • Gaugethe current health of: • OSB servers • Proxy services/operations • Message flow components • View custom reports • Metrics include: • Response time • Message throughput • Error count • Alert count • Schema violations
- 37. Alerts • Service LevelAgreements (SLAs) • Guarantee a certain level of performance and/or quality • Trigger reports and Alerts • Email • SNMP • JMS • Rules based on: • Response time • Message count • Success/failure ratio • Schema violations • Security violations
- 38. OSB Security Service • Transport security (HTTP, JMS, Consumer etc.) WS-Security • Basic authentication SAML • SSL Proxy Authorization • SOAP message security Service • WS-Security Credential Mapping Business • WS-Policy Service • SAML • Credential mapping SOAP over HTTPS • Role-based authorization Service Producer • Delegated administration
- 39. Advanced Mediation Policies • Business Service Load Balancing & Failover Service Producer Node1 Proxy Business Service Producer Node2 Service Service Service Producer Node3 • Throttling Message Buffer Proxy Business Legacy Service Service Service
- 40. Demonstration: Manage aProxy Service Proxy Service approveLoan() Business ProcessLoan > $10,000? N Service approveLoan() Y Business ProcessLargeLoan Service approveLoan() Response Time > 5ms? SMTP Alert Please enable browser pop-ups!
- 41. Product Interoperability Console BPM Synchronize Configure Monitor Tuxedo Service Service Bus Repository BPEL PM Discover Configure Design ODI Publish Workspace Build Services & Applications
- 42. Have Licensing ortechnical questions? • SOA FAQ • OSB FAQ • OESB FAQ • All linked from their respective ias.us pages (start at http://soa.us.oracle.com )