Design Principles

This section provides a brief outline of some of our requirements and the general approaches we intend to use to meet them. Some of the specific libraries and tools mentioned may change as the design of the framework evolves.

Flexibility

• Interfaces and adaptors

Ease of extensibility

• Plugins (easy to obtain and distribute via a package index e.g., PyPI)

Portability

• Use of Python

100% open source infrastructure

• Python’s many open source libraries

Location transparency

• Abstract Factory design pattern
• Proxy objects