1 files changed, 86 insertions, 0 deletions
diff --git a/lib/ansible/module_utils/facts/packages.py b/lib/ansible/module_utils/facts/packages.py
new file mode 100644
index 0000000..53f74a1
--- /dev/null
+++ b/lib/ansible/module_utils/facts/packages.py
@@ -0,0 +1,86 @@
+# (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