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Composing Web Services and P2P Infrastructure

Explore the related works and paper ideas in our project infrastructure, focusing on technologies such as P2P and Web Services.

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Composing Web Services and P2P Infrastructure

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  1. Composing Web Services and P2P Infrastructure

  2. PRESENTATION FLOW • Related Works • Paper Idea • Our Project Infrastructure

  3. RELATED WORK Technologies : • P2P Technology-JXTA Framework • WebServices( UDDI, WSDL, SOAP ) Recent Work : • SuperPeer Technology • HyperCuP • Edutella/JXTA • RDF Based Peer-To-Peer Networks • Chatty Web

  4. Pure P2P Systems All Peers have equal roles and responsibilities in all aspects Gnutella, Freenet P2P NETWORK TOPOLOGIES

  5. Hybrid Peers P2P NETWORK TOPOLOGIES • Search is performed over a centralized directory, but download occurs in a P2P manner: • Peers are equal in download only • Napster

  6. Super Peers • Cross between pure and hybrid systems • A super peer is a node that acts as • a centralized server to a subset of clients • Clients submit queries to their super-peers • Super-peers are also connected to each other as peers in a pure P2P system,routing messages to each other • KaZaA

  7. Super Peers

  8. HyperCuP / HyperCuPs • Peers, no superpeers • Dimension increases incredibly

  9. Complicated, not well defined, limited range of usage

  10. Evaluation of Peer Network Topologies • “Shaping the Network” means designing and organizing peer networks Pure P2P : inefficient, heterogeneity, limited capabilities of peers Hybrid : the cost of single-node housing the centralized index, easy to attack Super-Peer: • combine the efficiency of Pure and Hybrid systems • centralized search with autonomy, load balancing, roboustness to attacks, • DESIGN is very important

  11. Recent Works: Edutella /JXTA “ Combining Edutella/JXTA P2P Service Environment with Web Services “ Two Way Approach: • Web Services Edutella/JXTA P2P Network • existing Edutella/JXTA P2P Services pure Web Service UDDI Registry Functionality is not well described

  12. Edutella/JXTA Edutella/JXTA P2P Services Web Service Content Provider

  13. RDF Based Super Peer Networks VERY WELL DONE WORK

  14. RDF Based Super Peer Networks Critical Points: • Super Peers store metadata for their peers • Super Peers store routing indices: • SuperPeer Peer • SuperPeer SuperPeer ( neighbors ) • Super Peers store transformation rules between different schemas of its peers • Super Peer subsets can be built regarding the interest areas Web Service Technology is not handled

  15. The Chatty Web New Translation? Know Existing Ones? What TO DO? HELP!!! • Routing due to query results • Circulation • Able to learn existing mappings • how? Storage? • Decision mechanism • Query parameters are increased, peers have to do much work • (low capacity peers) • Degree of semantic agreement • GLOBAL agreement Point of Failure

  16. Can it be a Paper Subject ? “Combination of Gossiping and Super Peer Technology” Super Peer Topology • based on HyperCuP • gossiping among SuperPeers ( high capability ) • level of SuperPeers ( no centralization, always keep the HyperCuP topology) • siblings of a SP • shaping is based on interest and other parameters Ex: In health subject, based on location in the World, queries can be sent depending on the location, ( lives in Turkey, has an accident in Chine; send query to Asia SuperPeer, it sends the query to Europe SuperPeer )

  17. Number of siblings • Not more than two levels • New Super Peer joins: • do gossiping with other SPs • get previous mappings • add the mapping between his schema and the others • results in a general schema, very hard for ontologies

  18. HyperCuP of HyperCuPsJoint centralized and distributed ideas • Brings the power of • SuperPeer Technology • Removes Chatty Web Drawbacks

  19. OUR PROJECTS Main Steps To Decide: 1. • Everything is in Edutella similar Environment ( possible ) • wrap existing web services, join the P2P world • no registries, efficient with appropriate topology, simple • Everything is in WebService Environment • Composition of Two Technologies Leave services as they are, construct a mechanism between them 2. Pure P2P? Super Peers? 3. Applicable To Different Ontologies? Only One Ontology?

  20. Results : Only one ontology Super Peer Topology HyperCuP Shaping • Proxy Servers contain UDDI registries • Put Proxies in SuperPeers ( Distributed UDDIs, similar to UDDI3 ) • SuperPeers are oriented in HyperCuP topology Sibling SuperPeers Semantic is handled by means of RDF, OWL, etc… Intelligent Routing( Querying ) Algorithms Intelligent Network Shaping • DO NOT Increase dimension but HyperCuP of HyperCuPs Joint centralized and distributed ideas

  21. THANK YOU!

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