[Fiware-tech-help] iotagent-json [IMPACT Growth]

[Ignacio Gomez Maqueda]

To whom it may concern,

We are trying to use the iotagent-json to connect the messages coming from
our devices to the Context Broker.
We have created a simple device for testing using curl. The object is:

curl -X POST -H "Fiware-Service: myHome" -H "Fiware-ServicePath:
/environment" -H "Content-Type: application/json" -H "Cache-Control:
no-cache" -d '{
    "devices": [
        {
            "device_id": "zz153",
            "entity_name": "zz153",
            "entity_type": "collar",
            "attributes": [
                  { "object_id": "f_activity", "name": "f_activity",
"type": "int" },
                  { "object_id": "la", "name": "latitude", "type":
"String"},
                  { "object_id": "lo", "name": "longitude", "type":
"String"},
                  { "name": "location", "type": "geo:point",  "expression":
"${latitude}, ${longitude}"}
            ]
        }
    ]
}

To publish a message we use the following call:
mosquitto_pub -t /1234/zz153/attrs -m
'{"f_activity":0,"la":"40.4","lo":"-3.4"}'

The problem arises when we get the information from the Context Broker
where fields are empty.

{
    "id": "zz153",
    "type": "collar",
    "TimeInstant": {
        "type": "ISO8601",
        "value": " ",
        "metadata": {}
    },
    "f_activity": {
        "type": "int",
        "value": " ",
        "metadata": {}
    },
    "latitude": {
        "type": "String",
        "value": " ",
        "metadata": {}
    },
    "location": {
        "type": "geo:point",
        "value": "0, 0",
        "metadata": {}
    },
    "longitude": {
        "type": "String",
        "value": " ",
        "metadata": {}
    }
}

We think the issue is in the type of the attributes because if we follow
the sample from the tutorial, it works. However, we have tried several
combinations with no success.

Thanks

Un saludo / Best Regards

Ignacio Gómez Maqueda

Director Técnico / CTO


Calle Federico Cantero Villamil 2-B, Desp. 6.

28935 Móstoles. Madrid
Tel.: +34 644 35 06 13
www.digitanimal.com  <http://www.digitanimal.com/>

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