First project: Spring Cloud with Swagger 3 API documentation in Clojure

How can I restart working on Clojure... Let's create a new Generic Opensource service that can be useful to anyone. I will do a series of Posts that will show the journey to create it.

Service: Hierarchy Property System

I want to create a Hierarchy Property System, this service will have the ability to define a Hierarchy of Objects. For example I can define this hierarchy:

• Root Level (the generic one)
• Group Of User
• User

A property set at Root Level will be the default for all the other sub objects, but if I override a property on SubUser level, that specific SubUser will have the value for Property Overriden.

Example for AB testing, you have a Commercial Web Site and you have implemented in your service a new cool Feature, called "I will get your Money for poor people", this feature will be activated if the property "robinHood" is set to true, the configuration will be:

• RootLevel -> robinHood: false
• User(id: 12345) ->  robinHood: true

So all other services in your Architecture will call the API: 

• getPropertyForHierarchyObject [propertyKey, hierarchyName, hierachyObjectType, objectId] with
• propertyKey: robinHood
• hierachyObjectType: User
• objectId: current User logged in the system 

The service will reply with the right value.

I also have some Technical Needs:

• Service should be a compatible Spring Cloud Service, the discovery server will be Zookeper
• API definition should be done with Swagger 3, I can have it auto generated or I will first define it and then use it
• Test coverage near 100%, TDD will be preferrable but we will see
• I want to have other APIs:
• createHierarchy [hierarchyName, & objectTypeWithLevel]
• objectTypeWithLevel: is a structure with ObjectType name and level in the hierarchy
• setPropertyOnHierarchy [propertyKey, value, hierarchyName, objectType]

Github Repository: https://github.com/marcomanzi/hierarchyPropertyService