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- As being the event producer, CPS Core is taking ownership of the event schema definition. Also, if the code and the classes to handle the event are not automatically generated, CPS Core could provide them to avoid code duplication. These need to be provided in a separated Maven module, delivered to Nexus and then imported as dependency by subscribers.
- The event publication is CPSDataService responsibility. After its call to DataPersistenceService is completed, it sends a Data Updated Event using a Data Updated Event Producer component. The event contains some DataNode information and JSON Data.
- CPS Core event publications are controlled by a an overall general application sytem environment variable that enable or disable them. By default they are disabled.
Data Ownership and Access
CPS Temporal is part of and internal to overall CPS system.
CPS Temporal service is following CPS data ownership and access rules:
- CPS Temporal querying clients are authenticated and authorized.
- CPS Temporal querying clients only has access to dataspaces and models they own or they have been granted to in CPS Core.
- DMaaP / Kafka event topic is CPS system internal, It should be accessible to CPS components only.
Going Further
- Other types of events: Data Deleted, Data Leaf Updated (partial node). Support for these types of events within the same schema.
- Additional levels of filtering to send notifications or not are seen on top of the overall general application one:
- Anchor level
- Yang specific path level (using extension ?)
- DMaaP / Kafka authentication and authorization.
- Timestamp format on the event (ISO)
References
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