Created question in FIWARE Q/A platform on 27-01-2017 at 15:01
Please, ANSWER this question AT http://stackoverflow.com/questions/41895831/fiware-orion-context-broker-subscription-v1-conditions-was-supposed-to-be-an

Question:
Fiware - Orion Context Broker subscription V1, "conditions was supposed to be an array"

Description:
When trying to use STH to be able to store and retrieve data sent to OCB, I have a problem making the subscription.

My problem is that the subscription creation goes well.
When I create the subscription as following:

POST /v1/contextSubscriptions HTTP/1.1
Host: <cb_host>:1026
Content-Type: application/json
Fiware-Service: myService
Fiware-ServicePath: /myServicePath
Cache-Control: no-cache

{
"entities": [

],
"attributes": [
"class"
],
"reference": "http://<cb_host>:8666/notify",
"duration": "P1M",
"notifyConditions": [

],
"throttling": "PT5S"
}

I receive following answer:

{
"subscribeResponse":

}

but on the Fiware server, i see an error about the conditions in the terminal running the containers, and another one about the attributes:

orion | ERROR@14:06:10 safeMongo.cpp[302]: Runtime Error (field 'conditions' was supposed to be an array but type=4 in BSONObj <{ _id: ObjectId('588b4f96e2066a50fa98df9c'), expiration: 1488116886, reference: "http://<cb_host>:8666/notify", custom: false, throttling: 5, servicePath: "/myServicePath", status: "active", entities: [

], attrs: [ "class" ], metadata: [], blacklist: false, conditions: [ "class" ], expression:

, format: "JSON" }> from caller mongoSubCacheItemInsert:221)
orion | ERROR@13:48:10 safeMongo.cpp[302]: Runtime Error (field 'attrs' was supposed to be an array but type=4 in BSONObj <{ _id: ObjectId('588b4f96e2066a50fa98df9c'), expiration: 1488116886, reference: "http://<cb_host>:8666/notify", custom: false, throttling: 5, servicePath: "/myServicePath", status: "active", entities: [

], attrs: [ "class" ], metadata: [], blacklist: false, conditions: [ "class" ], expression:

, format: "JSON" }> from caller mongoSubCacheItemInsert:215)

Also, when updating a value on my entity,

PUT /v2/entities/sensor03/attrs/class/value HTTP/1.1
Host: <cb_host>:1026
Accept: application/json
Fiware-Service: myService
Fiware-ServicePath: /myServicePath
Cache-Control: no-cache

"monitor"

I get nothing when querying the STH:

GET /STH/v1/contextEntities/type/myDevice/id/sensor03/attributes/class?lastN=10 HTTP/1.1
Host: <cb_host>:8666
Accept: application/json
Fiware-Service: myService
Fiware-ServicePath: /myServicePath
Cache-Control: no-cache

returns:

{
"contextResponses": [
{
"contextElement": {
"attributes": [

],
"id": "sensor03",
"isPattern": false,
"type": "myDevice"
},
"statusCode":

}
]
}

Note:

I use NGSI V1, as I suspect V2 is not yet supported for STH receiving NGSI V2 notifications regarding this issue.
Also i didn't find any documentation regarding "Getting historical raw context information" with NGSI V2, e.g on this page
I use Docker-machine with a singl debian 8 VM running on Fiware-Lab with following images:

mongodb:
image: mongo:2.6
hostname: mongodb
container_name: mongodb
command: --smallfiles

orion:
image: fiware/orion:develop
hostname: orion
container_name: orion
links:

• mongodb
  expose:
• "1026"
  ports:
• "1026:1026"
  command: -dbhost mongodb

fiware-sth-comet:
image: telefonicaiot/fiware-sth-comet
links:

• mongodb
  ports:
• "8666:8666"
  environment:
• STH_HOST=0.0.0.0
• DB_URI=mongodb:27017