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# (c) 2018, Ansible Project
# Simplified BSD License (see licenses/simplified_bsd.txt or https://opensource.org/licenses/BSD-2-Clause)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
from abc import ABCMeta, abstractmethod
from ansible.module_utils.six import with_metaclass
from ansible.module_utils.common.process import get_bin_path
from ansible.module_utils.common._utils import get_all_subclasses
def get_all_pkg_managers():
return {obj.__name__.lower(): obj for obj in get_all_subclasses(PkgMgr) if obj not in (CLIMgr, LibMgr)}
class PkgMgr(with_metaclass(ABCMeta, object)): # type: ignore[misc]
@abstractmethod
def is_available(self):
# This method is supposed to return True/False if the package manager is currently installed/usable
# It can also 'prep' the required systems in the process of detecting availability
pass
@abstractmethod
def list_installed(self):
# This method should return a list of installed packages, each list item will be passed to get_package_details
pass
@abstractmethod
def get_package_details(self, package):
# This takes a 'package' item and returns a dictionary with the package information, name and version are minimal requirements
pass
def get_packages(self):
# Take all of the above and return a dictionary of lists of dictionaries (package = list of installed versions)
installed_packages = {}
for package in self.list_installed():
package_details = self.get_package_details(package)
if 'source' not in package_details:
package_details['source'] = self.__class__.__name__.lower()
name = package_details['name']
if name not in installed_packages:
installed_packages[name] = [package_details]
else:
installed_packages[name].append(package_details)
return installed_packages
class LibMgr(PkgMgr):
LIB = None # type: str | None
def __init__(self):
self._lib = None
super(LibMgr, self).__init__()
def is_available(self):
found = False
try:
self._lib = __import__(self.LIB)
found = True
except ImportError:
pass
return found
class CLIMgr(PkgMgr):
CLI = None # type: str | None
def __init__(self):
self._cli = None
super(CLIMgr, self).__init__()
def is_available(self):
try:
self._cli = get_bin_path(self.CLI)
except ValueError:
return False
return True