DDS Tutorial -- Part II Hands On - OMG

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DDS Service Model: Object ModelTopicTopicDataWriterOfferedQoSDataReaderRequestedQoSPublisherDomainParticipantSubscriberDomainParticipant© 2009 Real-Time Innovations, Inc.Global Data Space• DomainParticipant – Allows application to join a DDS Domain (Global Data Space)• Topic – A string that addresses a group of objects in the Global Data Space– Each Object is identified by a Key (some fields within the object data)• Publisher, Subscriber – Pools resources for DataWriters and DataReaders• DataWriter – Declares intent to publish a Topic and provides type-safe operations to write/senddata• DataReader – Declares intent to subscribe to a Topic and provides type-safe operations toread/receive data
Other (non DDS)Commercial Pub-Sub Models• Older, but widely deployed– TIBCO (RendezVous, EMS)– IBM WebSphere MQ• Limited deployment:– CORBA Event Service– CORBA Notification Service• Emerging standards – not widely deployed– WS-Eventing– WS-Notification• Proprietary Systems– 29West– IBM LLM© 2009 Real-Time Innovations, Inc.
Page 1 and 2: DDS Tutorial -- Part IIHands OnGera
Page 3 and 4: Context: Middleware TechnologiesThe
Page 5 and 6: With increased complexity…End Use
Page 7 and 8: … middleware becomes necessaryEnd
Page 9 and 10: Network Middleware Examples• DDS,
Page 11 and 12: Middleware Communication ModelsPoin
Page 13 and 14: Queue versus Pub-Sub• Queue- Mess
Page 15: DDS Service Model:Communication Mod
Page 19 and 20: History:DDS the Standard(s)• Data
Page 21 and 22: DDS mandated for data-distribution
Page 23 and 24: DDS Adoption -Transportation, Indus
Page 25 and 26: Main differences of DDS vs other Pu
Page 27 and 28: Demo: ConceptsDisplay Area:Shows st
Page 29 and 30: QoS: Quality of ServiceQoS PolicyDU
Page 31 and 32: #2 Performance & ScalabilityDDS was
Page 33 and 34: Latency - (Linear Scale)DDS/JMS/Not
Page 35 and 36: DDS compared to JMS( 2KB messages )
Page 37 and 38: Message bus architecturesJMSEnterpr
Page 39 and 40: Discovery Service• DDS provides t
Page 41 and 42: Data PersistenceA standalone servic
Page 43 and 44: Durable Writers• Durable Writers
Page 45 and 46: Last value cache• A last-value ca
Page 47 and 48: DDS Real-Time Recording Service•
Page 49 and 50: #5 Natural with SOA building blocks
Page 51 and 52: Complex Event Engine Integration•
Page 53 and 54: Agenda• Context: Middleware Techn
Page 55 and 56: Middleware-based Message-Centric Sy
Page 57 and 58: Middleware-based Data-Centric Syste
Page 59 and 60: DDS Global Data• Address in Globa
Page 61 and 62: Example: Publication// Entities cre
Page 63 and 64: How to Get Data? (Listener-Based)//
Page 65 and 66: Listeners, Conditions & WaitSetsMid
Page 67 and 68:
Listeners, Conditions and Statuses
Page 69 and 70:
Hands-on Example (C++)MyType.slnMyT
Page 71 and 72:
Components/Mechanics of the GDSAppl
Page 73 and 74:
Global Data Space / Global State•
Page 75 and 76:
Domain and Domain ParticipantsUsing
Page 77 and 78:
QoS: OwnershipSpecifies whether mor
Page 79 and 80:
Configure the Cache Management• C
Page 81 and 82:
lifespan_pubQoS: Lifespanlifespan_s
Page 83 and 84:
Subscriptions: By Topic, Subject, C
Page 85 and 86:
Cache Management in Action• Topic
Page 87 and 88:
Tunable Reliability Protocol• Con
Page 89 and 90:
Confirmed Reliability INo packet lo
Page 91 and 92:
Configure Notifications, Fault Dete
Page 93 and 94:
QoS: Liveliness -Type and Durationl
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DDS Tutorial -- Part II Hands On - OMG

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