Web Enabled DDS - London Connext DDS Conference
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This document discusses Web-Enabled DDS, which allows real-time data from DDS applications to be accessed from web-based applications. It provides a gateway that connects DDS applications to web clients using standard HTTP protocols. This allows for scenarios like mobile data access, web UIs/dashboards, and access across firewalls. It presents the WebDDS object model and RESTful API for accessing DDS entities like topics, publishers, and data writers from web clients.
Web Enabled DDS - London Connext DDS Conference
- 1. DDS DDS Web Enabled Gerardo Pardo-Castellote, Ph.D. Chief Technology Officer, RTI October 2014
- 2. Web Integration (OMG Web-Enabled DDS) Direct access to real-time data from Web-Based Applications Operational Data Web Web Enabled DDS Integration Service Web Enabled DDS GUARD Global Data Space © 2014 Real-Time Innovations, Inc.
- 3. Web-Enabled DDS as Gateway © 2014 Real-Time Innovations, Inc. HTTP Protected perimeter and network Open network Firewall DDS Protocol (RTPS) Native DDS Applications Client Application using the OMG standard HTTP-DDS protocol WebDDS Service
- 4. Scenarios • Mobile data access • Access to DDS from browser-based applications • Web-based UIs/Dashboards • Access from small devices • Access across firewall • Disconnected stateless clients – Short lived commands – Scripts © 2014 Real-Time Innovations, Inc.
- 5. WebDDS Object Model © 2014 Real-Time Innovations, Inc. class WebDDS_ProxyClasses «interface» WebDDS::Entity - name :string «value» WebDDS::Qos WebDDS::Topic «value» WebDDS::Type - name :string WebDDS:: DataWriter «value» WebDDS:: QosProfile - name :string WebDDS:: Subscriber WebDDS:: DataReader WebDDS:: DomainParticipant WebDDS:: Publisher WebDDS::Status WebDDS::WaitSet WebDDS::Application - name :string - session_id :SessionId «use» qos 0..* qos_profile
- 6. Object Type All URIs have the prefix “/dds/rest1” Application /applications/<appname> QosProfile /applications/<appname>/qos_profiles/<profile_name> Type /applications/<appname>/types/<typename> WaitSet /applications/<appname>/waitsets/<waitsetname> Participant /applications/<appname>/participants/<partname> RegisteredT ype © 2014 Real-Time Innovations, Inc. Resources /applications/<appname>/participants/<partname>/regi stered_types/<reg_type_name> Topic /applications/<appname>/participants/<partname>/topi cs/<topicname> Publisher /applications/<appname>/participants/<partname>/publ ishers/<pubname> Subscriber /applications/<appname>/participants/<partname>/subs cribers/<subname> DataWriter /applications/<appname>/participants/<partname>/publ ishers/<pubname>/data_writers/<dwname> DataReader /applications/<appname>/participants/<partname>/subs cribers/<subname>/data_readers/<drname>
- 7. WebDDS API access to resources © 2014 Real-Time Innovations, Inc. Type of operation REST HTTP verb Create POST Update PUT Read, Get GET Delete DELETE All others POST
- 8. © 2014 Real-Time Innovations, Inc. Resou rce Representation QoS XML -> same as DDS QoS profile files Types XML -> same as DDS XML Application Creation -> Can be converted to/from IDL -> DDS-XTYPES standard Data XML -> DDS-XTYPES standard
- 9. Find out more… www.rti.com community.rti.com demo.rti.com www.youtube.com/realtimeinnovations blogs.rti.com www.twitter.com/RealTimeInnov www.facebook.com/RTIsoftware © 2014 Real-Time Innovations, Inc. dds.omg.org www.omg.org www.slideshare.net/GerardoPardo www.slideshare.net/RealTimeInnovations