The DDS Web Shapes demo illustrates remote access to the Connext DDS DataBus (the world-leading implementation of the OMG Data-Distribution Service standard) from Web applications. Web applications can use standard web protocols such as plain HTTP (or SOAP over HTTP) to remotely publish and subscribe data on the Connext DDS DataBus. The web-bases applications communicate via HTTP with the RTI Web Integration Service, which acts as a gateway to the Connext DDS DataBus.
Clients can choose among various web-protocols including plain HTTP or SOAP to communicate with the RTI Web Integration Service, the service in turn will use the high performance DDS-RTPS protocol to communicate with other applications in the Connext DDS DataBus.
The Google Maps Demo is similar to the Web Shapes Demo above in that it also illustrates remote access to Connext DDS data using web technologies.
Beyond access to the Connext DDS data this demo also illustrates how it is possible to create mash-ups that mixes-in real-time information coming from Connext DDS with other sources of information to create rich web-based UIs and dashboards.
This particular demonstration displays the position of varios objects (Aircraft and Ships) overlaid on a map based on the coordinates (Latitude and Longitude) of the objects. As the position of these objects is updated live in the Connext DataBus so are the locations of the corresponding icons on the map.
You can even try using multiple browsers from different devices and following different links (Reader versus Writer) on the different devices. If you create an publish the location of the object in one of them, you should see it on from the other.
CaveCanem is an agent-based system that can be used to record and monitor the state of a set of computers running on a network. It serves as a demonstrator of several RTI products, most notably the Connext DDS middleware (the world-leading implementation of the OMG Data-Distribution Service standard), the RTI Database Integration Service, and the RTI Web Integration Service.
The CaveCanem agent is software application than runs on all the platforms that require monitoring. It is an extensible agent that configures itself via plugins. Each plugin provides information on one or more metrics for the computer where it runs. Built-in plugins are provided for CPU utilization, memory consumption, file-system utilization, network traffic, and network intrusion alerts.
CaveCanem takes the information from each plugin and publishes it on DDS. The schema user is defined by the plugin, but it typically contains the data-values as well as a key that identifies both the computer and the particular element whose metric is being published. For example the 'CPU' plugin reports load, CPU (user, system), interrupt rate, etc. for each computer in the system (the computer name/IP address being the key). Similarly the 'Processes' reports the various process statistics (CPU, memory, etc.) for each process running on a computer. The key being the name of the computer plus the process Id.
When you click on the "CaveCanem link" above your browser will redirect to a page containing a dashboard from which you can see the information on all the monitored computers. All these computers are running on the Amazon cloud.