GHN Manager

The gHNManager is a gCube Local Service deployed together with the gCore package. Its main role is to provide an interface (mainly exploited by the [[VRE Manager[[ service) for managing the node as well as publishing node information. The service is responsible for a correct management and changes of the scope of the GHN and RI resources representing the node and the locally deployed service instances.

Architecture

The gHNManager is a stateless service since it manages the state of local GCUBE Resources (node and instances). The service has one port-type providing the operations to manipulate such a state.

Operations

The main functions supported by GHNManager (thanks to the support of the gCube Application Framework and its scope management, cf. Section ) are:

• addScope() – takes as input the new scope the GHNManager; the scope is assigned to the node, if it is compliant with the scope rules of the infrastructure.
• removeScope() –
• addRItoScope() – takes as input parameter a message containing a list of pairs Running Instance identifiers and scope for each of such bindings and notes this new GHN operational context;
• removeRIScope() –