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How To Dev - How to Create Entity Instances / IoT Devices, and their messages

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In Snap4City, the creation of Entity Instances / IoT Devices can be performed by using several different approaches via:

  • Entity/IoT Directory, which provides a user interface for REGISTERING Entity Instances / IoT Devices creation as:
    • a full entity creation from scratch.
    • an Instance of the Entity Model: Smart Data Models of FIWARE, IoT Device Models, Smart Models, Entity Models.
    • a process of Harvesting of an External Broker which are Orion Broker
  • Proc.Logic / IoT App by using a specific Node-RED node (Snap4City Library) which allows to create one or more Entity Instances / IoT Devices
    • from a known Model:  Smart Data Models of FIWARE, IoT Device Models, Smart Models, Entity Models.
    • at the arrival or discovery of new Entity on the basis of a Model.
  • Data Table Loader, which allows to load and excel file which is interpreted to create Entity Instances / IoT Devices, and also messages according to the Excel kind and data.
  • Python FastDataLoader tool for automating the creation of Entity Instances / IoT Devices together with some data ingestion process.
  • Specific Entity/IoT Directory API, which are those used by Python or other programming languages.

The above solutions are described in:

Once create the Entity Instances the Entity Messages can arrive via:

  • Brokers, in push.
  • Proc.Logic: in push or pull.
  • Python, or other custom process: in push or pull.

 

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