[Backlogmanager] [FIWARE-JIRA] (HELP-13445) [fiware-stackoverflow] Fiware: NGSI v2 susbcription: getting notified only about the attribute that has changed

[Veronika Vlnkova (JIRA)]

     [ https://jira.fiware.org/browse/HELP-13445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Veronika Vlnkova reassigned HELP-13445:
---------------------------------------

    Assignee: Jose Manuel Cantera

> [fiware-stackoverflow] Fiware: NGSI v2 susbcription: getting notified only about the attribute that has changed
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HELP-13445
>                 URL: https://jira.fiware.org/browse/HELP-13445
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Jose Manuel Cantera
>              Labels: fiware, fiware-orion
>
> Created question in FIWARE Q/A platform on 29-01-2018 at 10:01
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/48498173/fiware-ngsi-v2-susbcription-getting-notified-only-about-the-attribute-that-has
> +Question:+
> Fiware: NGSI v2 susbcription: getting notified only about the attribute that has changed
> +Description:+
> I have this subscription:
> {
>     "id": "5a27abba56256c402cec5654",
>     "description": "my subscription",
>     "status": "active",
>     "subject": {
>         "entities": [
>             {
>                 "idPattern": ".*"
>             }
>         ],
>         "condition": {
>             "attrs": []
>         }
>     },
>     "notification": {
>         "timesSent": 56939,
>         "lastNotification": "2018-01-29T09:06:45.00Z",
>         "attrs": [],
>         "attrsFormat": "normalized",
>         "http": {
>             "url": "http://notif_url"
>         },
>         "lastFailure": "2018-01-24T15:10:08.00Z",
>         "lastSuccess": "2018-01-29T09:06:45.00Z"
>     }
> }
> Using it I can get notified about new entities whithout specifiying a particular entity ID.
> the problem is that when one entity attribute changes I get notified about all attributes.
> Is it possible to get notified only about the attribute that has changed and keeping in the same time the possibility to discover new entities?
> Something like in if attribut x changed in the condition part, get notified about it:
>  "condition": {
>                 "attrs": [attribute_X]
>             }
>  "notification": {
>             "attrs": [attribute_X]
> }
> Thanks!



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