Orion - cygnus integration - fiware-orion

Question

We are trying to integrate Orion, Cygnus and Ckan together.
I have followed these steps in order to make this happen:
Install and configure Cygnus with the Fiware Ckan info(Cygnus up and running)
Login in Ckan and get the API key and configure this in the Cygnus settings
Orion steps:
queryUpdate = APPEND data
{
"contextElements": [{
"type": "Room",
"isPattern": "false",
"id": "26JanRoom",
"attributes": [{
"name": "temperature",
"type": "float",
"value": "888"
}]
}],
"updateAction": "APPEND"
}
subscribeContext = subscribe with the entity id created above(our Cygnus host is given as reference "reference": "CYGNUS HOST", )
{
"entities": [{
"type": "Room",
"isPattern": "false",
"id": "26JanRoom"
}],
"attributes": ["temperature"],
"reference": "CYGNUS HOST",
"duration": "P1M",
"notifyConditions": [{
"type": "ONCHANGE",
"condValues": ["temperature"]
}],
"throttling": "PT5S"
}
queryUpdate = UPDATE data
{
"contextElements": [{
"type": "Room",
"isPattern": "false",
"id": "26JanRoom",
"attributes": [{
"name": "temperature",
"type": "float",
"value": "111"
}]
}],
"updateAction": "UPDATE"
}
What we expect is to receive some notifications in the Cygnus side, but there is nothing sent from the Orion (orion.lab.fi-ware.org:1026/)
Could you please help us on this topic?
Thanks kr
Omer Ozdemir

Answer 1

Your are using
"condValues": ["pressure"]
which means that every time the attribute named pressure change, Orion will trigger a notification. However, your update is modifiygin temperature.
Please, have a look to the subscribe context operation section at Orion documentation.