Improve performance of the bitwarden lookup plugin (#7468)

* Improve performance of the bitwarden lookup plugin

When looking for items using an item id, we can access the item directly with
bw get item instead of searching through all items. This doubles the lookup
speed.

* Update changelogs/fragments/bitwarden-lookup-performance.yaml

Co-authored-by: Felix Fontein <felix@fontein.de>

* fix indentation

* Ensure backwards compatible behavior in case of errors when doing bitwarden lookup by id

* chore: Link to correct PR in changelog fragment

* Use identity check when comparing with None

---------

Co-authored-by: Richard Klose <richard.klose@gec.io>
Co-authored-by: Richard Klose <richard@klose.dev>
Co-authored-by: Felix Fontein <felix@fontein.de>

changelogs/fragments/bitwarden-lookup-performance.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+  - "bitwarden lookup plugin - when looking for items using an item ID, the item is now accessed directly with ``bw get item`` instead of searching through all items. This doubles the lookup speed (https://github.com/ansible-collections/community.general/pull/7468)."

plugins/lookup/bitwarden.py

@@ -104,6 +104,8 @@ class Bitwarden(object):
         out, err = p.communicate(to_bytes(stdin))
         rc = p.wait()
         if rc != expected_rc:
+            if len(args) > 2 and args[0] == 'get' and args[1] == 'item' and b'Not found.' in err:
+                return 'null', ''
             raise BitwardenException(err)
         return to_text(out, errors='surrogate_or_strict'), to_text(err, errors='surrogate_or_strict')
 
@@ -112,6 +114,9 @@ class Bitwarden(object):
         """
 
         # Prepare set of params for Bitwarden CLI
+        if search_field == 'id':
+            params = ['get', 'item', search_value]
+        else:
             params = ['list', 'items', '--search', search_value]
 
         if collection_id:
@@ -121,7 +126,11 @@ class Bitwarden(object):
 
         # This includes things that matched in different fields.
         initial_matches = AnsibleJSONDecoder().raw_decode(out)[0]
-
+        if search_field == 'id':
+            if initial_matches is None:
+                initial_matches = []
+            else:
+                initial_matches = [initial_matches]
         # Filter to only include results from the right field.
         return [item for item in initial_matches if item[search_field] == search_value]