elodie.plugins.plugins

Complexity

Total Complexity

6

Size/Duplication

Total Lines	51
Duplicated Lines	0 %

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	Plugins.__init__()	0	3	1
A	Plugins.run_all_before()	0	6	2
A	Plugins.load()	0	20	3

"""
Plugin object.

.. moduleauthor:: Jaisen Mathai <jaisen@jmathai.com>
"""
from __future__ import print_function
from builtins import object

from sys import exc_info
from importlib import import_module

from elodie.config import load_plugin_config
from elodie import log


class Plugins(object):
    """A class to execute plugin actions."""

    def __init__(self):
        self.plugins = []
        self.classes = {}

    def load(self):
        """Load plugins from config file.
        """
        plugin_list = load_plugin_config()
        for plugin in plugin_list:
            plugin_lower = plugin.lower()
            try:
                # We attempt to do the following.
                #  1. Load the module of the plugin.
                #  2. Instantiate an object of the plugin's class.
                #  3. Add the plugin to the list of plugins.
                #  
                #  #3 should only happen if #2 doesn't throw an error
                this_module = import_module('elodie.plugins.{}.{}'.format(plugin_lower, plugin_lower))
                self.classes[plugin] = getattr(this_module, plugin)()
                # We only append to self.plugins if we're able to load the class
                self.plugins.append(plugin)
            except:
                log.warn('Some error occurred initiating plugin {} - {}'.format(plugin, exc_info()[0]))
                continue


    def run_all_before(self, file_path, destination_path, media):
        """Process `before` methods of each plugin that was loaded.
        """
        for cls in self.classes:
            this_method = getattr(self.classes[cls], 'before')
            this_method(file_path, destination_path, media)