1: requestQuote 2: orderGoods 3: makePayment customer (client) supplier (Web service) The internal business logic of clients and Web services must support.

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Presentation transcript:

1: requestQuote 2: orderGoods 3: makePayment customer (client) supplier (Web service) The internal business logic of clients and Web services must support the conversation, and maintain the state across different operation invocations belonging to the same conversation. The interaction between clients and services is often formed by a set of operation invocations (i.e., it is a conversation). A service provider may support some conversations while disallowing others. Copyright Springer Verlag Berlin Heidelberg 2004

quote requested goods ordered requestQuote cancelOrder order canceled order completed orderGoods makePayments Copyright Springer Verlag Berlin Heidelberg 2004

supplier customer 1:requestQuote 2:orderGoods 4:makePayment 3:confirmOrder Copyright Springer Verlag Berlin Heidelberg 2004

supplier customer 1:requestQuote 2:orderGoods 5:makePayment warehouse 3:checkShipAvailable 7:getShipmentDetail 8:confirmShipment 9:confirmShipment 6:orderShipment 4:confirmOrder Copyright Springer Verlag Berlin Heidelberg 2004

requestQuote orderGoods confirmOrder getShipmentDetail confirmShipment supplier customer warehouse checkShipAvailable makePayment orderShipment confirmShipment Copyright Springer Verlag Berlin Heidelberg 2004

requestQuote (to supplier) checkShipAvailable (to warehouse) confirmOrder (to customer) orderGoods (to supplier) cancelOrder (to customer) makePayment (to supplier) orderShipment (to warehouse) getShipmentDetails (to customer) confirmShipment (to warehouse) confirmShipment (to supplier) supplierwarehousecustomer warehouse confirms warehouse cancels Copyright Springer Verlag Berlin Heidelberg 2004

requestQuote (to supplier) confirmOrder (to customer) orderGoods (to supplier) cancelOrder (to customer) makePayment (to supplier) getShipmentDetails (to customer) confirmShipment (to warehouse) supplierwarehousecustomer warehouse confirms warehouse cancels Copyright Springer Verlag Berlin Heidelberg 2004

manufacturinghealth care…telecomfinance support for protocols such as transactionality, reliability, security,… Web services executing vertical protocols. The main focus of standards such as RosettaNet, xCBL, and part of ebXML is to describe protocols at this level. other Web services middleware (e.g., SOAP routers) service provider middleware for horizontal protocols provides properties and guarantees to the execution vertical protocols. Standards such as WS-Coordination, WS-Transaction, and part of ebXML fit here. SOAP messages Copyright Springer Verlag Berlin Heidelberg 2004

service provider service requestor P1P1 P 2, P 3 P 4, P 5 service requestor Copyright Springer Verlag Berlin Heidelberg 2004

P1P1 P 2, P 3 P 4, P 5 conversation controller object for P 1 object for P 2 object for P 3 object for P 4 object for P 5 P1P1 P2P2 P3P3 P4P4 P5P5 service requestor service provider clients invoke operations at the same address the controller dispatches messages to the appropriate implementation object Copyright Springer Verlag Berlin Heidelberg 2004

service provider HTTP server SOAP router (with conversation controller) SOAP messages on HTTP transport EJB EJB container conversation ID/object mapping Copyright Springer Verlag Berlin Heidelberg 2004

service requestor B B conversation routing, compliance verification horizontal protocol implementation H H H B: conversation compliant with a business protocol H: conversation compliant with an horizontal protocol object (Web service implementation) horizontal protocol implementation service provider Copyright Springer Verlag Berlin Heidelberg 2004

object (W1) horizontal protocol handler (A) object (W2) horizontal protocol handler (B) A’s port reference B’s port reference A’s port reference A’s role B’s role conversation controller conversation controller protocol messages Copyright Springer Verlag Berlin Heidelberg 2004

Web service coordinator Web service coordinator (a) central coordination (b) distributed coordination Copyright Springer Verlag Berlin Heidelberg 2004

CreateCoordinationContext coordination type - current context CreateCoordinationContextResponse coordination context - identifier - coordination type - registration service -... ActivationCoordinatorPortType coordinator ActivationRequestorPortType Web service Copyright Springer Verlag Berlin Heidelberg 2004

register protocol identifier - participant protocol service registerResponse coordinator protocol service RegistrationCoordinatorPortType coordinator RegistrationRequestorPortType Web service Copyright Springer Verlag Berlin Heidelberg 2004

protocol-specific messages from participant to coordinator protocol-specific messages from coordinator to participant XCoordinatorPortType coordinator XParticipantPortType Web service Copyright Springer Verlag Berlin Heidelberg 2004

Web service A activation participant registration participant protocol participant coordinator C activation coordinator registration coordinator protocol coordinator Web service B activation participant registration participant protocol participant 1. create CC 2. X1 3. register 4. protocol coordinator 5. operational message 6. register 7. protocol coordinator 8. protocol-specific message 9. protocol-specific message Web service implementation Copyright Springer Verlag Berlin Heidelberg 2004

Web service Acoordinator C a Web service Bcoordinator C b 1. create CC 2. X1 3. register 4. protocol coordinator 5. operational message 6. create CC 7. X2 8. register 9. register 10. protocol coordinator 11. protocol coordinator 12. protocol message 13. protocol message 14. protocol message 15. protocol message Copyright Springer Verlag Berlin Heidelberg 2004

coordinator n XCoordinatorPortType XParticipantPortType coordinator n + 1 XCoordinatorPortType XParticipantPortType Web service n + 1 XParticipantPortType Copyright Springer Verlag Berlin Heidelberg 2004

atomic transaction coordinator CompletionCoordinatorPortType CompletionWithAckCoordinatorPortType PhaseZeroCoordinatorPortType 2PCCoordinatorPortType OutcomeNptificationCoordinatorPortType CompletionParticipantPortType CompletionWithAckParticipantrPortType PhaseZeroParticipantrPortType 2PCParticipantPortType OutcomeNptificationParticipantPortType ActivationCoordinatorPortType RegistrationCoordinatorPortType RegistrationParticipantPortType WS-Coordination interfaces needed for chaining WS-Transaction interfaces WS-Transaction interfaces needed for chaining Copyright Springer Verlag Berlin Heidelberg 2004

Web service Acoordinator CaWeb service Bcoordinator Cb create CC T1 register for Completion completion coordinator operational message create CC T2 register for PhaseZero PhaseZero coordinator complete PhaseZero register for 2PC 2PC coordinator register for 2PC PhaseZeroComplete prepare prepared commit committed completed Copyright Springer Verlag Berlin Heidelberg 2004

business activity coordinator BusinessAgreementCoordinatorPortType BusinessAgreementWithCompleteCoordinatorPortType BusinessAgreementParticipantPortType BusinessAgreementWithCompleteParticipantrPortType ActivationCoordinatorPortType RegistrationCoordinatorPortType RegistrationParticipantPortType WS-Coordination interfaces needed for chaining WS-Transaction interfaces WS-Transaction interfaces needed for chaining Copyright Springer Verlag Berlin Heidelberg 2004

Web service AWeb service BWeb service CCoordinator R create CC A1 operational message register for BusinessAgreement BusinessAgreement coordinator operational message register for BusinessAgreement BusinessAgreement coordinator completed faulted compensate forget Copyright Springer Verlag Berlin Heidelberg 2004

> request price and availability :customer :product supplier start process price and availability request > price and availability request > price and availability response [ fail ] failed [ success ] end Copyright Springer Verlag Berlin Heidelberg 2004

MIME multipart/related envelope transport protocols (TCP/IP and others) HTTPSMTP other (future) HTTPS SSL preamble header delivery header service header service content attachment 1 attachment n headers business process payload Copyright Springer Verlag Berlin Heidelberg 2004