[Backlogmanager] [FIWARE-JIRA] (HELP-8360) [fiware-stackoverflow] Fiware STH: row data API not exposing metadata

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-8360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez reassigned HELP-8360:
------------------------------------

    Assignee: Francisco Romero

> [fiware-stackoverflow] Fiware STH: row data API not exposing metadata
> ---------------------------------------------------------------------
>
>                 Key: HELP-8360
>                 URL: https://jira.fiware.org/browse/HELP-8360
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Francisco Romero
>              Labels: fiware, fiware-cygnus
>
> Created question in FIWARE Q/A platform on 08-03-2017 at 10:03
> {color: red}Please, ANSWER this question AT{color} http://stackoverflow.com/questions/42667222/fiware-sth-row-data-api-not-exposing-metadata
> +Question:+
> Fiware STH: row data API not exposing metadata
> +Description:+
> I am using Cygnus with Mongo and sth sink to retrieve historical data.
> In the current implementation of cygnus mongo sink the attribute metadata is not stored in the data base. So I updated cygnus to be able to store the attribute metadata.
> But when I use the STH-comet to retrieve the history, the API appreantly does not support retrieveing the attribute metadata. 
> Am I missing some kind of configuration or the API is not supporting the attribute metadata since the response that I am getting from STH-comet is:
>     {
>   "contextResponses": [
>     {
>       "contextElement": {
>         "attributes": [
>           {
>             "name": "humidity",
>             "values": [
>               {
>                 "recvTime": "2017-03-08T08:06:11.463Z",
>                 "attrType": "Number",
>                 "attrValue": "999"
>               },
>               {
>                 "recvTime": "2017-03-08T08:10:54.199Z",
>                 "attrType": "Number",
>                 "attrValue": "3.06"
>               }
>             ]
>           }
>         ],
>         "id": "Room1",
>         "isPattern": false,
>         "type": "Room"
>       },
>       "statusCode": {
>         "code": "200",
>         "reasonPhrase": "OK"
>       }
>     }
>   ]
> }
> In the mongoDB data base I have this content:
> { "_id" : ObjectId("58bfbb7c973c5c22d258cffc"), "recvTime" : ISODate("2017-03-08T08:06:11.463Z"), "attrName" : "humidity", "attrType" : "Number", "attrValue" : "999", "attrMetadata" : [ ] }
> { "_id" : ObjectId("58bfbc93973c5c22d258cffd"), "recvTime" : ISODate("2017-03-08T08:10:54.199Z"), "attrName" : "humidity", "attrType" : "Number", "attrValue" : "3.06", "attrMetadata" : [ { "name" : "unit", "type" : "Text", "value" : "voltage" } ] }
> In case the API is not supporting the retrieval of the attribute metadata, can this feature be added?
> Thanks & Best regards.



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