stoney core: REST API

Web API

The Web API will be implemented as a first-class citizen
- It provides all the available functions and data to its clients
- Serves as a data and business logic abstraction layer
The web API will be implemented using HTTPS and REST principles
The web API uses JSON as the primary data interchange format (serialization of data structures should be abstracted)
Multiple authentication methods are possible
- Web-Server assisted:
  - Basic HTTP-Auth
  - X509 Certificate based authentication
  - Kerberos
- API key with shared secret
- Access tokens
versioned API (either via URI or the Accept-Header)
All function/method calls have to be fully-nonblocking. If an expensive call has to be made to a backend system, the client needs to be provided with a status URI which can be checked for the current status
Input validation must be performed for all data (validation of data happens twice: in the API and the client)
Meaningful error message will be presented to the client
All API functions are to be documented using an accepted documentation standard (doxygen (preferred), phpDocumentor or Sami)
The API will be based on existing, proved and tested open source modules and components, coming either from a framework are as stand alone implementations,

Why a Web API?

Separation and abstraction of data and business logic
Support for multiple clients with the same code base
- HTML/JS/CSS for selfcare Web GUI
- Command line interface for easy scripting
- Integration into third party provisioning systems for resellers
Automatic testing of functionality
Base for responsive resp. Mobile First Web-Applications/-Design

On the Yii PHP Framework Homepage: Extensions tagged with "rest"
- On the Yii PHP Framework Homepage: RestfullYii or on GitHub: RestfullYii
On the Yii PHP Framework Homepage: Extensions tagged with "api"