我可以在创建和删除实体时发送通知吗？

Question

I want to be notified when an entity is created or deleted. Does Orion support subscribing to the creation and deletion of entities?

Answer 1

Yes it does, in Orion Context Broker - NGSIv2 - you have got the following alteration triggers:

entityUpdate : notification is sent whenever a entity covered by the subscription is updated (no matter if the entity actually changed or not)

entityChange : notification is sent whenever a entity covered by the subscription is updated and it actually changes (or if it is not an actual update, but forcedUpdate option is used in the update request)

entityCreate : notification is sent whenever a entity covered by the subscription is created

entityDelete : notification is sent whenever a entity covered by the subscription is deleted

Complete documentation: https://github.com/telefonicaid/fiware-orion/blob/master/doc/manuals/orion-api.md#subscriptions-based-in-alteration-type

Best.