Multi tenancy

The Orion Context Broker implements a simple multitenant/multiservice model based and logical database separation, to ease service/tenant based authorization policies provided by other FIWARE components or third party software, e.g. the ones in the FIWARE security framework (PEP proxy, IDM and Access Control). This functionality is activated when the "-multiservice" command line option is used. When "-multiservice" is used, Orion uses the "Fiware-Service" HTTP header in the request to identify the service/tenant. If the header is not present in the HTTP request, the default service/tenant is used.

Multitenant/multiservice ensures that the entities/attributes/subscriptions of one service/tenant are "invisible" to other services/tentants. For example, queryContext on tenantA space will never return entities/attributes from tenantB space. This isolation is based on database separation, which details are described in the Installation and Administration manual.

In addition, note that when "-multiservice" is used Orion includes the "Fiware-Service" header in the notifyContextRequest request messages associated to subscriptions in the given tenant/service (except for the default service/tenant, in which case the header is not present), e.g.:

Content-Length: 725
User-Agent: orion/0.13.0
Accept: application/json
Fiware-Service: t_02
Content-Type: application/json


Regarding service/tenant name syntax, it must be a string of alphanumeric characters (and the "_" symbol). Maximum length is 50 characters, which should be enough for most use cases. Orion Context Broker interprets the tenant name in lowercase, thus, although you can use tenants such as in updateContext "MyService" it is not advisable, as the notifications related with that tenant will be sent with "myservice" and, in that sense, it is not coherent the tenant you used in updateContext compared with the one that Orion sends in notifyContextRequest.