refactor(gpg_secretstore): fallible python imports for modules and plugins

plugins/lookup/gpg_secretstore.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 # coding: utf-8
 
-# (c) 2021, Famedly GmbH
+# (c) 2021-2022, Famedly GmbH
 # GNU Affero General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/agpl-3.0.txt)
 
 from __future__ import absolute_import, division, print_function
@@ -12,6 +12,7 @@ DOCUMENTATION = """
     name: gpg_secretstore
     author:
       - Jadyn Emma Jäger (@jadyndev)
+      - Jan Christian Grünhage (@jcgruenhage)
     short_description: read passwords that are compatible with passwordstore.org's pass utility
     description:
       - Enables Ansible to read passwords/secrets from the passwordstore.org pass utility.
@@ -64,20 +65,27 @@ _raw:
 """
 
 from ansible.plugins.lookup import LookupBase
-from ansible_collections.famedly.base.plugins.module_utils.gpg_utils import SecretStore
-
-
-# Check if all required libs can loaded
-try:
-    import gnupg
-
-    HAS_LIB = True
-except ImportError:
-    raise ModuleNotFoundError("Library PGPy not found!")
+from ansible.module_utils.six import raise_from
+from ansible.module_utils.basic import missing_required_lib
+from ansible.errors import AnsibleError
+from ansible_collections.famedly.base.plugins.module_utils.gpg_utils import (
+    SecretStore,
+    check_secretstore_import_errors,
+)
 
 
 class LookupModule(LookupBase):
     def run(self, terms: dict, variables, **kwargs):
+        errors = []
+        traceback = []
+        for lib, exception in check_secretstore_import_errors().items():
+            errors.append(missing_required_lib(lib))
+            traceback.append(exception)
+        if errors:
+            raise_from(
+                AnsibleError("\n".join(errors)),
+                "\n".join(traceback),
+            )
         if len(terms) == 1:
             data_type = "plain"
         else: