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S. Wrede, 02/25/2011 09:43 AM


URI Schema

rsb://composite1.composite2.composite3.componentNameXY/interfaceFooBar/portABC // EXPORT, creation of damain objects
rsb://composite1/highLevelInterface/portABC  // subscription URI

Just Brainstorming

scheme://domain:port/path?query_string#fragment_id

rsb://scopeA.scopeB:<PortId>/service/interface/port?param_n=n#filter:cond

More complex example (Q: How to deal with input and output ports?)

Informer:   rsb://biron.hal.camera/image/left/o/left/?param1=12
Listener:   rsb://biron.hal.camera/image/left/i
Subscription-URI: rsb://biron.hal.vision/grab/out/left/#xpath:/frame

Targets

  • Service vs. Interface
  • Composite
  • Port

Use Cases

  • Introspection URIs? HTTP possible?
  • Subscription on each node of the tree (aggregation vs. filtering)
  • Model vs. System URI? Should not exist?
  • Every active object must be identifiable
  • Data part of URI? Probably not?
  • RESTful API?

Identified Problems

  • Data space (motion/wheel/left) is orthogonal to current model structure
    • Using this concept could generate unmodelled ports in reverse engineering
    • Is this required if we model our system?
    • Wildcards in URLs?
    • Idea: Second model tree for AggregationInterfaces that combine Ports from different Components / Composites etc. and automatically derive their base data type
      • Different Protocol part in the URI for these interfaces to subscribe on
      • We do not need data hierarchies (only required for function overloading), instead only collections of interfaces are required and an intersection operation to derive the resulting type of an aggregation

Open Issues

  • Action encoding