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PEPPOL SMP. OASIS BDXR TC July 25 2012. The PEPPOL infrastructure. Overall architecture. SERVICE METADATA LOCATOR (SML). PEPPOL CERTIFICATE AUTHORITY (PKI). CENTRAL GOVERNANCE POINTS. DISTRIBUTED REPLICATED SCALED SYSTEMS. SERVICE METADATA PUBLISHER (SMP).
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PEPPOL SMP OASIS BDXR TC July 25 2012
Overall architecture SERVICE METADATA LOCATOR (SML) PEPPOL CERTIFICATE AUTHORITY (PKI) CENTRAL GOVERNANCE POINTS DISTRIBUTED REPLICATED SCALED SYSTEMS SERVICE METADATA PUBLISHER (SMP) ACCESS POINT SERVICE (GATEWAY)
Steps for sending documents SERVICE METADATA LOCATOR (SML) PEPPOL CERTIFICATE AUTHORITY (PKI) 1: DNS lookup SERVICE METADATA PUBLISHER (SMP) 2: HTTP GET metadata 3: Check certificate validity SENDER’S ACCESS POINT SERVICE RECEIVER’S ACCESS POINT SERVICE 5: Check certificate validity 4: Send document
Why is the SMP separate from the gateway (Access Point)? Metadata • Orthogonal • Can use metadata without using START • Can use START without looking up metadata • e.g. hardcoded endpoints • Allows new protocols to be added • Allows alternate governance models Transport
How the SMP is currently being used National infrastructure PEPPOL infrastructure Access Point service Access Point service Access Point service SMP service PEPPOL SML National SMP Access Point service Access Point service SMP service VANS Shared Access Point Service provider Shared SMP Access Point service SMP service Service provider Service provider
The SMP data model • ServiceGroup • Holds the participant identifier of the recipient, and a list of references to individual ServiceMetadata resources that are associated with that participant identifier • SignedServiceMetadata • Holds all of the metadata about a Service, or a redirection URL to another Service Metadata Publisher holding this information
Example SMP data • ServiceGroup • http://alfa1lab.publisher.sml.peppolcentral.org/iso6523-actorid-upis%3A%3A9902%3ADK28158815 • SignedServiceMetadata: • http://alfa1lab.publisher.sml.peppolcentral.org/iso6523-actorid-upis%3A%3A9902%3ADK28158815/services/busdox-docid-qns%3A%3Aurn%3Aoasis%3Anames%3Aspecification%3Aubl%3Aschema%3Axsd%3AInvoice-2%3A%3AInvoice%23%23urn%3Awww.cenbii.eu%3Atransaction%3Abiicoretrdm010%3Aver1.0%3A%23urn%3Awww.peppol.eu%3Abis%3Apeppol4a%3Aver1.0%3A%3A2.0
Some issues • SMP data model is very “hardcoded” to PEPPOL’s needs and requirements • SMP does not support security – all information in the SMP is always publicly displayed • Dale has pointed out some issues with using HTTPS • (partly SML related)