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#!/usr/bin/python3
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Developed by: Nasel(http://www.nasel.com.ar)
#
# Authors:
# Matías Fontanini
# Santiago Alessandri
# Gastón Traberg
import os
import sys
from functools import reduce
from moleexceptions import FilterNotFoundException
import queryfilters, responsefilters, requestfilters
class BaseFilterManager:
def __init__(self, import_dir):
full_import_dir = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), import_dir)
self.filters = []
self.filter_map = {}
classes = [x[:-3] for x in os.listdir(full_import_dir) if not x.startswith('__') and x.endswith('.py')]
for c in classes:
__import__(import_dir + '.' + c, globals(), locals())
def active_filters(self):
return [x[0] for x in self.filters]
def active_filters_to_string(self):
return [str(x[1]) for x in self.filters]
def add_filter(self, name, params):
if not name in self.filter_map:
raise FilterNotFoundException()
filter_object = self.filter_map[name](name, params)
self.filters.append((name, filter_object))
return filter_object
def remove_filter(self, name):
self.filters = list(filter(lambda x: x[0] != name, self.filters))
def apply_filters(self, query):
return reduce(lambda x, y: y[1].filter_(x), self.filters, query)
def available_filters(self):
return self.filter_map.keys()
def register_filter(self, name, filter_class):
self.filter_map[name] = filter_class
class QueryFilterManager(BaseFilterManager):
def __init__(self):
queryfilters.register_query_filter = self.register_filter
BaseFilterManager.__init__(self, 'queryfilters')
def parameters(self, name, args):
if not name in self.active_filters():
raise FilterNotFoundException()
else:
return self.filters[self.active_filters().index(name)][1].parameters(args)
def config_parameters(self, name):
if not name in self.active_filters():
raise FilterNotFoundException()
else:
return self.filters[self.active_filters().index(name)][1].configuration_parameters()
def config(self, name, params):
if not name in self.active_filters():
raise FilterNotFoundException()
else:
self.filters[self.active_filters().index(name)][1].config(params)
class ResponseFilterManager(BaseFilterManager):
def __init__(self):
responsefilters.register_response_filter = self.register_filter
BaseFilterManager.__init__(self, 'responsefilters')
class RequestFilterManager(BaseFilterManager):
def __init__(self):
requestfilters.register_request_filter = self.register_filter
BaseFilterManager.__init__(self, 'requestfilters')
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