Created question in FIWARE Q/A platform on 16-01-2019 at 16:01
Please, ANSWER this question AT https://stackoverflow.com/questions/54220061/orion-subscriptions-do-not-detect-the-removal-of-entities

Question:
Orion subscriptions do not detect the removal of entities

Description:
Subscriptions detect the creation and update of entities but do not detect the removal of entities.

Subscription creation:

POST http://myhost:orion_port/v2/subscriptions

{
"description": "Send a notification to detect any change",
"subject": {
"entities": [

]
},
"notification": {
"http":

}
}

Entity creation:

POST http://myhost:iot_aget_json_port/iot/devices

{
"devices": [{
"device_id": "entity_test_agent",
"entity_name": "entity_test_orion",
"entity_type": "test",
"transport": "HTTP",
"protocol": "IoTA-JSON",
"attributes": [

],
"static_attributes": [

]
}]

}

Entity update:

PUT http://myhost:orion_port/v2/entities/entity_test_orion/attrs/name

Delete entity:

DELETE http://myhost:orion_port/v2/entities/entity_test_orion

DELETE http://myhost:iot_aget_json_port/iot/devices/entity_test_agent

First, I send the subscription creation to detect changes in entities.

Later, I create an entity and the subscription is executed without problems. Then I update the entity name and I receive the subscription again perfectly, but if I delete the entity I do not receive any event.

There are any way to receive subscription events to detect when an entity is deleted?