Recognize adjacent action_plugins

Related: #4122

.github/workflows/tox.yml

@@ -73,7 +73,7 @@ jobs:
     env:
       # Number of expected test passes, safety measure for accidental skip of
       # tests. Update value if you add/remove tests.
-      PYTEST_REQPASS: 856
+      PYTEST_REQPASS: 857
     steps:
       - uses: actions/checkout@v4
         with:

examples/playbooks/action_plugins/some_action.py

@@ -0,0 +1,13 @@
+"""Sample action_plugin."""
+
+from ansible.plugins.action import ActionBase
+
+
+class ActionModule(ActionBase):  # type: ignore[misc]
+    """Sample module."""
+
+    def run(self, tmp=None, task_vars=None):  # type: ignore[no-untyped-def]
+        """."""
+        super().run(tmp, task_vars)
+        ret = {"foo": "bar"}
+        return {"ansible_facts": ret}

examples/playbooks/adj_action.yml

@@ -0,0 +1,10 @@
+---
+- name: Fixture for testing adjacent plugins
+  hosts: localhost
+  tasks:
+    - name: Call adjacent action plugin
+      some_action: {}
+
+    - name: Call adjacent filter plugin
+      ansible.builtin.debug:
+        msg: "{{ 'foo' | some_filter }}"

examples/playbooks/filter_plugins/some_filter.py

@@ -0,0 +1,13 @@
+"""Sample adjacent filter plugin."""
+
+from __future__ import annotations
+
+
+class FilterModule:  # pylint: disable=too-few-public-methods
+    """Ansible filters."""
+
+    def filters(self):  # type: ignore[no-untyped-def]
+        """Return list of exposed filters."""
+        return {
+            "some_filter": str,
+        }

src/ansiblelint/schemas/__store__.json

@@ -44,7 +44,7 @@
     "url": "https://raw.githubusercontent.com/ansible/ansible-lint/main/src/ansiblelint/schemas/requirements.json"
   },
   "role-arg-spec": {
-    "etag": "74fc5d429919813f2c977a2e3ed2afee1ca3dba242f6978bded8199895642db6",
+    "etag": "e41a42e1ca634a9eb2edbc4a180f404bdc71e17aafa464e6651387c08152bbc5",
     "url": "https://raw.githubusercontent.com/ansible/ansible-lint/main/src/ansiblelint/schemas/role-arg-spec.json"
   },
   "rulebook": {

src/ansiblelint/utils.py

@@ -44,7 +44,12 @@
 from ansible.parsing.yaml.constructor import AnsibleConstructor, AnsibleMapping
 from ansible.parsing.yaml.loader import AnsibleLoader
 from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject, AnsibleSequence
-from ansible.plugins.loader import PluginLoadContext, add_all_plugin_dirs, module_loader
+from ansible.plugins.loader import (
+    PluginLoadContext,
+    action_loader,
+    add_all_plugin_dirs,
+    module_loader,
+)
 from ansible.template import Templar
 from ansible.utils.collection_loader import AnsibleCollectionConfig
 from yaml.composer import Composer
@@ -1071,11 +1076,17 @@ def parse_examples_from_plugin(lintable: Lintable) -> tuple[int, str]:
 @lru_cache
 def load_plugin(name: str) -> PluginLoadContext:
     """Return loaded ansible plugin/module."""
-    loaded_module = module_loader.find_plugin_with_context(
+    loaded_module = action_loader.find_plugin_with_context(
         name,
         ignore_deprecated=True,
         check_aliases=True,
     )
+    if not loaded_module.resolved:
+        loaded_module = module_loader.find_plugin_with_context(
+            name,
+            ignore_deprecated=True,
+            check_aliases=True,
+        )
     if not loaded_module.resolved and name.startswith("ansible.builtin."):
         # fallback to core behavior of using legacy
         loaded_module = module_loader.find_plugin_with_context(

test/test_adjacent_plugins.py

@@ -0,0 +1,25 @@
+"""Test ability to recognize adjacent modules/plugins."""
+
+import logging
+
+import pytest
+
+from ansiblelint.rules import RulesCollection
+from ansiblelint.runner import Runner
+
+
+def test_adj_action(
+    default_rules_collection: RulesCollection,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Assures local collections are found."""
+    playbook_path = "examples/playbooks/adj_action.yml"
+
+    with caplog.at_level(logging.DEBUG):
+        runner = Runner(playbook_path, rules=default_rules_collection, verbosity=1)
+        results = runner.run()
+    assert "Unable to load module" not in caplog.text
+    assert "Unable to resolve FQCN" not in caplog.text
+
+    assert len(runner.lintables) == 1
+    assert len(results) == 0