Design And Implement Of Template And Service Management System In Network Orchestrator

Nowadays,Internet is in a booming period,e-commerce,online payment and live video streaming become a part of people's lives.There are many challenges to traditional network,that brought by the quick change of requirements,at the same time,there are lots of new opportunities appear.Software-Define Network attract extensive attention worldwide.Virtual network element decouple business and equipment,as a result,network function virtualization become growing trend.Network function virtualization decouple business and equipment and bring flexible and agile,also bring challenge to network management and operation.Network orchestrator bring flexible and agile,and make network service deploy to software define network dynamic and on demand.This topic rely on "network definable virtualized switching network platform",which aims to verity the orchestrate process,design and implement a lightweight network orchestrator.This thesis design and implement the template and service management system of network orchestrator.This thesis use TOSCA to describe service.Provide interface to other system through REST API.Core business logic part provide both VNF template,relationship template,service template management function,and network service lifecycle management function.Data access module design the database table,which is used to save the data generated by core business part,and encapsulate workflow engine,other system's interface,which is used to decouple core business logic part with workflow engine and other system.Finally,verify the feasibility of lightweight network orchestrator through function test and joint debugging.