Orion Context Broker webminar 2014-04-01
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The document discusses Orion Context Broker, which is a context management enabler in FI-WARE. It intermediates between context producers and consumers. Orion stores context information using the NGSI information model, which represents context data as entities with attributes. Orion provides a RESTful NGSI API to allow updating, querying and subscribing to context changes. The document provides an overview of how Orion works and its role in FI-WARE applications.
Orion Context Broker webminar 2014-04-01
- 1. Open APIs for Open Minds Fermín Galán Márquez (fermin@tid.es) Telefónica I+D Context Awareness: Orion Context Broker April 1st, 2014
- 2. Context management Context Management in FI-WARE is about management of Context data (aka Context Information) Context Information is always relevant to “entities”, although entities can be anything (applications, users, things, …) Orion Context Broker intermediates between context producers and context consumers 1 Orion Context Broker Applications
- 3. The NGSI information model 2 Meta-data • Name • Type • Value Context Element attributes • Name • Type • Value Context Element • EntityId • EntityType 1 n 1 n “has” “has” ID, location, custom metadata, etc. Node Lamps Electrical Regulator Vans Technicians Issues location TimeInstant severity batteryCharge illuminance presence electricPotential
- 4. Orion Context Broker in a nutshell 3 Orion Context Broker Context Producers Context Consumers subscriptions update query notify notify update update DB 1026 1026
- 5. NGSI API REST API (XML & JSON rendering) Additional “convenience” operations to ease some operations 4 Context Availability Management (NGSI9) • Register context sources (registerContext) • Search for context sources (discoverContextAvailability) • Subscribe to context sources availability notifications (subscribeContextAvailability, updateContextAvailabilitySubcription & unsubscribeContextAvailability) Context Management (NGSI10) • Update context information (updateContext) • Query context information (queryContext) • Subscribe to context information notifications (subscribeContextAvailability, updateContextAvailabilitySubcription & unsubscribeContextAvailability )
- 6. FI-WARE Context/Data Management Platform 5 Context/Data Management Platform Applications OMA NGSI- 9/10 Processing/Analysi s Algorithms Gathered data is injected for processing/analysis Distributed Context Sources Complex Event Processing (PROTON) BigData (COSMOS) Processed data is injected for processing/analy sis Data generated either by CEP or BigData is published Gathered data injected for CEP-like processing Direct bigdata injection Programming of rules
- 7. Orion in LiveDemo application 6 NGSI IoT Adapter IoT Backend Device Management Browser Context BrokerTicket Management CEP Wirecloud (javascript runtime) widgets Object Storage History Location Wirecloud (server) Cosmos
- 8. Resources for developers Single entry point: the FI-WARE Catalogue • http://catalogue.fi-ware.org/ • “Enablers” tab • “Data/Context management chapter” • Search for “Publish/Subscribe Context Broker - Orion Context Broker” Direct URL: http://catalogue.fi-ware.org/enablers/publishsubscribe- context-broker-orion-context-broker The core manuals are linked from “Documentation” tab 7
- 9. http://fi-ppp.eu http://fi-ware.eu Follow @Fiware on Twitter ! Thanks ! 8