bingproxy

It is a Python implmentation of Dynamic Proxy, which is very similar with Java Dynamic Proxy.

Installation

Use "pip install bingproxy" to get module on all Platform.

How to use

Here is the sample code below to use the proxy in business code.

from bingproxy.proxy import ProxyDecorator, InvocationHandler

# Invocation Handler handles methond invocation ONLY. Customized handlers must extends from InvocationHandler.        
class CustomizedInvocationHandler(InvocationHandler):
    # Invocation Handler doesn't support the initialization function with parameters.
    def __init__(self):
        print("Hello Handler")
    
    # proxy is the proxy instance which proxies the nested object.
    # func is the raw function invoked.
    # nestedObj is the object which is proxied. It is the object of class CoreClass.
    def invoke(self, proxy, func, nestedObj, *args, **kwargs):
        print("print " + nestedObj.param2 + " previously.")
        return func(*args, **kwargs)

# Use decorator declaration to activate dynamic proxy.
@ProxyDecorator(CustomizedInvocationHandler)
class CoreClass(object):
    def __init__(self, param1, param2):
        super().__init__()
        self.__param1 = param1
        self.__param2 = param2
    
    @property
    def param2(self):
        return self.__param2
    
    def makeThingsDone(self, param3):
        print("nested print: " + param3)
        return True

if __name__ == "__main__":
    instance = CoreClass().newInstance("Hello1", "Hello2")
    finished = instance.makeThingsDone("Hello3")
    if finished is True:
        print("Good Job.")
    else:
        print("Maybe next time.")

For more questions

Feel free to mail me if you have any questions: k.thomas.tong@gmail.com