Choose some AOP framework

[s-kostyuk]

Choose some AOP framework to be able to:

• perform centralized logging of Service calls;
• open and close DB transactions;
• check if an access to the requested resource or actions is allowed (permission control)

So, some sort of middleware is needed to perform such tasks prettily

[s-kostyuk]

OK, the following decisions was made:

• ready-made AOP framework will not be used;
• I'll not implement a fully-featured AOP framework by my own;
• Interceptor pattern will be used for implementation of Aspects;
• dynamic nature of the Python language will be used for implementation of Interceptors;
• interceptor objects will be created in runtime explicitly on everpl start-up, just after instantiation of the corresponding objects to be wrapped (like Services);
• Authorization checking will be implemented via Context Managers.