wsloader

WSGI Application and Protocol for exposing Python Modules as REST API

Webservice Loader (wsloader) is a WSGI application and protocol to allow exposing native Python interfaces as REST-like webservices without writing any HTTP/web-service specific code to expose a new service.

Convert this:

# greeter.py
def say_hello():
   return "Hello World!"

to this:

$ curl -D - 'http://localhost:8080/say_hello'
HTTP/1.1 200 OK
Content-Length: 13
Content-Type: text/plain; charset=utf-8
Last-Modified: Thu, 05 Dec 2009 09:30:01 GMT
Date: Thu, 05 Dec 2009 09:34:47 GMT

Hello World!

with no additional code!

Objectives

The objectives of wsloader are:

1. Minimal/Zero extra code and configuration to expose Python interfaces as a webservice
2. Clean separation of webservice delivery mechanism and service implementation
3. Full encapsulation of webservice protocols and mechanisms for authentication, authorisation, serialisation, end-point discovery and loading, logging and load balancing

Features

Currently wsloader supports the following features:

• loading any Python module/class as a service
• handling of service independent request and response marshalling via JSON
• automatic URL creation based on the module path (can be overridden)
• automatic enforcing of GET and POST methods for read and write endpoints
• proper HTTP error responses for service invocation failures
• high-performance application loading and state management
• redirection of sys.stderr to apache error logs

See the Quick-start Guide for more details, at example/example.md