[Backlogmanager] [FIWARE-JIRA] (HELP-21123) [fiware-stackoverflow] Fiware - prevent data loss due to network issues between sensors and Orion

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-21123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez reassigned HELP-21123:
-------------------------------------

    Assignee: Backlog Manager

> [fiware-stackoverflow] Fiware - prevent data loss due to network issues between sensors and Orion
> -------------------------------------------------------------------------------------------------
>
>                 Key: HELP-21123
>                 URL: https://jira.fiware.org/browse/HELP-21123
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Backlog Manager
>              Labels: fiware, fiware-orion, iot, networking, opc-ua
>
> Created question in FIWARE Q/A platform on 07-04-2023 at 10:04
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/75957585/fiware-prevent-data-loss-due-to-network-issues-between-sensors-and-orion
> +Question:+
> Fiware - prevent data loss due to network issues between sensors and Orion
> +Description:+
> I'm wondering about how to prevent data loss due to network issues between sensors and Fiware Orion.
> Example:
> A smart industry is using some sensors and actuators connected to PLC.
> This PLC is an OPC UA server.
> The OPC UA IoT agent is used to fetch and subscribe to this server's values and forward them to the context broker (Orion NGSIv2).
> During one hour, a network problem / maintenance disconnect the IoT Agent from the OCP UA server (PLC). The production line is still producing data during this time.
> Questions:
> What is expected in this case ?
> Do IoT agents can store data that are not successfully send to the context broker ?
> Do OPC UA IoT agent is able to use OPC UA Historical Access (HA) to recover previous values ?
> I set up a sandbox environment to test if it was possible to ask Orion for the history of data stored on the OPC UA server.
> The IoT Agent documentation doesn't seem to address this topic.
> This documentation is speaking about sensors making measurements every hour and sending data once everyday. It may be related ?
> Thank you
> Best regards,



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