gistfile1.py

#-------------------------------------------------------------------------------
# Name:        module1
# Purpose:
#
# Author:      164022
#
# Created:     07.12.2011
# Copyright:   (c) 164022 2011
# Licence:     <your licence>
#-------------------------------------------------------------------------------
#!/usr/bin/env python

import os
import os.path
import imp
import sys

class pluginManager:
    def __init__(self,path):
        self.path = path
        self.plugins = {}
        self.reload()

    def reload(self):
        pluginpath = os.path.dirname(".")+self.path
        #pluginpath = os.path.join(os.path.dirname(imp.find_module("pluginloader")[1]), self.path)
        pluginfiles = [fname[:-3] for fname in os.listdir(pluginpath) if fname.endswith(".py")]
        if not pluginpath in sys.path:
            sys.path.insert(0,pluginpath)

        for fname in pluginfiles:
            self.load(fname)


    def load(self,fname):
        mod = __import__(fname)
        try:


            validity = self.checkPlugin(mod,fname)
            if not validity == True:
                print "invalid plugin: %s" % validity
                return
            else:
                plugin = getattr(mod,fname)
                typ = getattr(plugin,"typ")
                name = getattr(plugin,"name")

        except Exception as ex:
            print ex
            return

        if not typ in self.plugins.keys():
            self.plugins[typ] = {}

        if name in self.plugins[typ].keys():
            self.plugins[typ][name].onUnload()

        self.plugins[typ][name] = plugin()
        self.plugins[typ][name].onLoad()

        print "loaded plugin: %s" % name
        return

    def checkPlugin(self,plugin,name):
        try:
            plugin = getattr(plugin,name)
            onload = getattr(plugin,"onLoad")
            onload = getattr(plugin,"onUnload")
            typ = getattr(plugin,"typ")
            name = getattr(plugin,"name")
            return True
        except Exception as ex:
            print ex
            return ex

    def callPlugins(self, name, function,*args,**kwargs):
        if name in self.plugins.keys():
            for plugin in self.plugins[name].values():
                try:
                    func = getattr(plugin,function)
                    func(*args,**kwargs)

                except Exception as ex:
                    print ex


        #print name,function,args,kwargs

def main():

    pm = pluginManager("plugins/")
    pm.callPlugins("test","testfunction",1,a=2)

if __name__ == '__main__':
    main()