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#!/usr/bin/python
#
# Copyright (C) 2013 Simo Sorce <simo@redhat.com>
#
# see file 'COPYING' for use and warranty information
#
# 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, see <http://www.gnu.org/licenses/>.
import os
import imp
import cherrypy
import inspect
from ipsilon.util.data import AdminStore
from ipsilon.util.log import Log
class Plugins(object):
def __init__(self):
self._providers_tree = None
def _load_class(self, tree, class_type, file_name):
cherrypy.log.error('Check module %s for class %s' % (file_name,
class_type))
name, ext = os.path.splitext(os.path.split(file_name)[-1])
try:
if ext.lower() == '.py':
mod = imp.load_source(name, file_name)
# elif ext.lower() == '.pyc':
# mod = imp.load_compiled(name, file_name)
else:
return
except Exception, e: # pylint: disable=broad-except
cherrypy.log.error('Failed to load "%s" module: [%s]' % (name, e))
return
if hasattr(mod, class_type):
instance = getattr(mod, class_type)()
public_name = getattr(instance, 'name', name)
tree[public_name] = instance
cherrypy.log.error('Added module %s as %s' % (name, public_name))
def _load_classes(self, tree, path, class_type):
files = None
try:
files = os.listdir(path)
except Exception, e: # pylint: disable=broad-except
cherrypy.log.error('No modules in %s: [%s]' % (path, e))
return
for name in files:
filename = os.path.join(path, name)
self._load_class(tree, class_type, filename)
def get_plugins(self, path, class_type):
plugins = dict()
self._load_classes(plugins, path, class_type)
return plugins
class PluginLoader(object):
def __init__(self, baseobj, facility, plugin_type):
config = AdminStore().load_options(facility)
cherrypy.log('LOAD: %s\n' % repr(config))
whitelist = []
if 'global' in config:
sec = config['global']
if 'order' in sec:
whitelist = sec['order'].split(',')
if cherrypy.config.get('debug', False):
cherrypy.log('[%s] %s: %s' % (facility, whitelist, config))
if config is None:
config = dict()
p = Plugins()
(pathname, dummy) = os.path.split(inspect.getfile(baseobj))
self._plugins = {
'config': config,
'available': p.get_plugins(pathname, plugin_type),
'whitelist': whitelist,
'enabled': []
}
def get_plugin_data(self):
return self._plugins
class PluginInstaller(object):
def __init__(self, baseobj):
(pathname, dummy) = os.path.split(inspect.getfile(baseobj))
self._pathname = pathname
def get_plugins(self):
p = Plugins()
return p.get_plugins(self._pathname, 'Installer')
class PluginObject(Log):
def __init__(self):
self.name = None
self._config = None
self._options = None
self._data = AdminStore()
def get_config_desc(self, name=None):
""" The configuration description is a dictionary that provides
A description of the supported configuration options, as well
as the default configuration option values.
The key is the option name, the value is an array of 3 elements:
- description
- option type
- default value
"""
if name is None:
return self._options
opt = self._options.get(name, None)
if opt is None:
return ''
return opt[0]
def _value_to_list(self, name):
if name not in self._config:
return
value = self._config[name]
if type(value) is list:
return
vlist = [x.strip() for x in value.split(',')]
self._config[name] = vlist
def set_config(self, config):
self._config = config
if self._config is None:
return
if self._options:
for name, opt in self._options.iteritems():
if opt[1] == 'list':
self._value_to_list(name)
def get_config_value(self, name):
value = None
if self._config:
value = self._config.get(name, None)
if not value:
if self._options:
opt = self._options.get(name, None)
if opt:
value = opt[2]
if cherrypy.config.get('debug', False):
cherrypy.log('[%s] %s: %s' % (self.name, name, value))
return value
def set_config_value(self, option, value):
if not self._config:
self._config = dict()
self._config[option] = value
if self._options and option in self._options:
if self._options[option][1] == 'list':
self._value_to_list(option)
def get_plugin_config(self, facility):
return self._data.load_options(facility, self.name)
def refresh_plugin_config(self, facility):
config = self.get_plugin_config(facility)
self.set_config(config)
def save_plugin_config(self, facility, config=None):
if config is None:
config = self._config
config = config.copy()
for key, value in config.items():
if type(value) is list:
config[key] = ','.join(value)
self._data.save_options(facility, self.name, config)
def get_data(self, idval=None, name=None, value=None):
return self._data.get_data(self.name, idval=idval, name=name,
value=value)
def save_data(self, data):
self._data.save_data(self.name, data)
def new_datum(self, datum):
self._data.new_datum(self.name, datum)
def del_datum(self, idval):
self._data.del_datum(self.name, idval)
def wipe_config_values(self, facility):
self._data.delete_options(facility, self.name, None)
def wipe_data(self):
self._data.wipe_data(self.name)
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