1. High Level Component Definition and Architectural Relationships

2. API Definitions

2a. Exposed APIs

Interface Name	Definition	Capabilities	Version	Status	Payload Model(s)	API Spec (Swagger)

Interface Name

Definition

Capabilities

Version

Status

Payload Model(s)

API Spec (Swagger)

SO-E-01

Service and Resource order requests

Service Instance management (Service, Volume Group, VF Module, VNF, PNF and CNF)

Health check, global and node.

Infrastructure provider management (Certificates, networks, sub-networks, security groups)

3.1.2

Production

Embedded in interface

Swagger,json

SO-E-02

SO maintenance requests

Monitoring of the SO BPMN flows.

Upload of new recipe war files.

8.0.0

Development and Evaluation

Embedded in interface

Monitoring_Swagger.json

2b. Consumed APIs

ONAP component wise details

Interface Name	Description

Interface Name	Description
SDCE-6	Service/Resource model notification
POE-5	Delegation of decision to policy logic
OOF-HAS	Delegation of placement decision
AAIE-1	Ingest/update state of services and resources
MCE-2	Assign and configure infrastructure resources
CONE-3	Assign and configure network resources
APPC	Assign and configure resources (Using APPC library hosted in BPMN) [Yang, REST, DMaaP]
VFCE-2 (SOL005)	Delegation of Network Service LCM
SOL003	Delegation of VNF LCM to VNFM
SDCE-7	Service/Resource model query
etsicatalogAPIE-1	Catalog API Provides catalog management interface: fetch VNF package from SDC fetch NS package from SDC fetch Service package from SDC search VNF/NS/Service
etsicatalogAPIE-2	NSD Management API Provides NSD management interface (Align with ETSI SOL-005) Create NSD Info Upload NSD Query NSD Info Fetch NSD Delete NSD Create PNFD Info Upload PNFD Query PNFD Info Fetch PNFD Delete PNFD Subscribe & Notify
etsicatalogAPIE-3	VNF Management API Provides VNF management interface (Align with ETSI SOL-003) Create VNF Package Info Upload VNF Package QueryVNF Package Info, include obtaining the VNFD Fetch VNF Package Fetch VNF Package Artifacts Delete VNF Package Subscribe & Notify
etsicatalogAPIE-4	Parser API Provides Parse interface: Parse VNF Parse PNF Parse NS Parse Service

3. Component Description

Orchestration is the execution of various modules capabilities in harmony as a consolidated process to accomplish the desired tasks. The Service Orchestrator (SO) component of ONAP provides orchestration at a very high level, with an end to end view of the infrastructure, network, and applications.

SO's primary function is the automation of end-to-end service instance provisioning activities. SO is responsible for the instantiation and configuration of VNFs in support of overall end-to-end service instantiation, operations and management. SO executes well-defined processes to complete its objectives and is typically triggered by the receipt of service requests generated by other ONAP components or by Order Lifecycle Management in the BSS layer. The orchestration procedure is either created manually or obtained from the Service Design and Creation (SDC) component of ONAP, where all service designs are created and exposed/distributed for consumption

Internally, SO is organized as a set of modules with well defined responsibility. External adapters (SDNC, OpenStack, VFC and SOL003) encapsulate most communication with external systems. Persistence is exposed to other SO modules – not externally, by DB adapters (Catalog and Request). The underlying workflow component resides in the BPMN Execution Engine. The BPMN Execution Engine also interacts with other ONAP systems such as App controllers, AAI and OOF-HAS. Interactions with SNC are hosted by the SDC Controller. Likewise the API Request Handler exposes SOs API for interaction with clients. Finally there is also a monitoring component that allows insight into the execution state of workflows.