Your systems. Working as one.
Discover problems in your distributed system before it's too late
© 2012 RTI 2
About RTI
• World leader in fast, scalable communications software for real-time operational systems• 350,000+ licenses deployed in 500+ unique
projects• Standards leader
– Authored DDS (OMG)– Co-authored RTPS interoperability
protocol (IEC 61158, OMG)– Support 12+ standards– Participate in 15+ standards
organizations
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Operational Systems
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Decentralized Architecture
• No central ESBs, brokers or servers• Peer-to-peer communication
– Components, services, applications, devices, subsystems, systems• Bus is virtual
Network
5
RTI Connext™
Control AppSensor ActuatorDisplay
AppSensor
© 2012 RTI
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Data Centricity
• Underlying communication paradigm• Applications operate on data objects– Create, Read, Update, Delete (CRUD)– Like a database but for data in motion (event-driven)
• State maintained by middleware, external to apps
Source(Key)
LatitudeLongitud
eAltitude
RADAR1 37.4 -122.0 500.0
UAV2 40.7 -74.0 250.0
LPD3 50.2 -0.7 0.0
Virtual global data space
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Benefits of Data Centricity
• Scalability and robustness– Single source of truth in a system– Late joining applications automatically synchronized– Particularly valuable for dynamic OT systems
• Loose coupling for ease of development and integration– Applications require no knowledge of each other– …only of the data being exchanged– Interfaces (types) and objects are well defined and discoverable– Fosters information sharing, interoperability and open architecture
• Simplified development– OT apps are inherently data centric– Middleware manages data cache and lifecycles, not custom code
• Wire efficiency and performance– No need to send field definitions with each message
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RTI Connext™
DDS Spy
DDS Ping
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RTI DDS Ping
RTI Connext™
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RTI DDS Spy
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RTI DDS Spy
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Excel Add-in
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Excel Add-in
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Example QoS
• Reliability• Durability• Deadline• Filtering– Time– Content
• History• Lifespan• Liveliness• Ownership & Strength• Resource Limits
• Eases development and integration by moving logicfrom application to middleware• Improves efficiency and scalability: only required data
is sent and delivered data
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Quality of Service Compatibility
• QoS Example - Deadline– The Deadline QoS specifies the maximum time
between data sample – Writer uses this to specify a new data sample will
be published at least every x seconds– Reader uses this to specify they want to receive
one data sample at least every x seconds
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Analyzer
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Analyzer
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RTI Connext™
DDS Spy
DDS Ping Analyzer
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Monitoring Library
• Static or dynamic linked libraries for Connext applications• Gathers and publishes statistics for data
readers, writers, and other DDS entities
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Monitor
Key = Error = Warning
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Monitor
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Monitor
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Monitor
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Monitor
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Distributed Logger API
• Publish Log messages remotely• Visualize live update of logs in RTI Admin
Console• Integration with popular Logging framework
Log4j
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Distributed Logs Viewer
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System Overall Health
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Host Details
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Routing Service details
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Recording Console
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Wireshark
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Tools at a glance
Development cycle
DDS SpyDDS Ping Spreadsheet Add-in
WiresharkAnalyzer Monitor Admin Console
Recording Console
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