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<<DocRef: the SDN-C User Guide or SDNC API page, if there is one>>
The SDNC network controller in FIgure 1 illustrates the core OpenDaylight framework that supports a model driven service abstraction layer (MD-SAL), api handlers, operational and configuration trees, and an adapter framework for integrating with controlled devices, virtual functions, and cloud infrastructure. Within this framework the OpenECOMP Service Logic Interpreter (SLI) addition provides an extensible scripting language for expressing service logic through a Direct Graph (DG) builder based on Node-Red. The SLI is extended by adding Java classes that can be called as a node in a DG to support frequent complex operations.
Figure 1. SDNC Network Controller
Application Controllers
Application controllers, such as APPC, receive orchestrated requests from the MSO, which obtains application-specific components and attributes from SDC. The MSO continues to be responsible for ensuring that the Application Controller successfully completes its Resource configuration as defined by the workflow.
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