Rename module_executor -> execute_module

It is a function/callable, the name should imply action, should be a
verb and not a noun.

Keep supporting the old name while we have PRs in-flight that use the
old name.

roles/openshift_health_checker/action_plugins/openshift_health_check.py

@@ -91,7 +91,7 @@ class ActionModule(ActionBase):
                         check_name,
                         cls.__module__, cls.__name__,
                         other_cls.__module__, other_cls.__name__))
-            known_checks[check_name] = cls(module_executor=self._execute_module)
+            known_checks[check_name] = cls(execute_module=self._execute_module)
 
         return known_checks
 

roles/openshift_health_checker/openshift_checks/__init__.py

@@ -21,8 +21,13 @@ class OpenShiftCheckException(Exception):
 class OpenShiftCheck(object):
     """A base class for defining checks for an OpenShift cluster environment."""
 
-    def __init__(self, module_executor):
-        self.module_executor = module_executor
+    def __init__(self, execute_module=None, module_executor=None):
+        if execute_module is module_executor is None:
+            raise TypeError(
+                "__init__() takes either execute_module (recommended) "
+                "or module_executor (deprecated), none given")
+        self.execute_module = execute_module or module_executor
+        self.module_executor = self.execute_module
 
     @abstractproperty
     def name(self):

roles/openshift_health_checker/openshift_checks/package_availability.py

@@ -21,7 +21,7 @@ class PackageAvailability(NotContainerizedMixin, OpenShiftCheck):
             packages.update(self.node_packages(rpm_prefix))
 
         args = {"packages": sorted(set(packages))}
-        return self.module_executor("check_yum_update", args, tmp, task_vars)
+        return self.execute_module("check_yum_update", args, tmp, task_vars)
 
     @staticmethod
     def master_packages(rpm_prefix):

roles/openshift_health_checker/openshift_checks/package_update.py

@@ -11,4 +11,4 @@ class PackageUpdate(NotContainerizedMixin, OpenShiftCheck):
 
     def run(self, tmp, task_vars):
         args = {"packages": []}
-        return self.module_executor("check_yum_update", args, tmp, task_vars)
+        return self.execute_module("check_yum_update", args, tmp, task_vars)

roles/openshift_health_checker/openshift_checks/package_version.py

@@ -17,4 +17,4 @@ class PackageVersion(NotContainerizedMixin, OpenShiftCheck):
             "prefix": rpm_prefix,
             "version": openshift_release,
         }
-        return self.module_executor("aos_version", args, tmp, task_vars)
+        return self.execute_module("aos_version", args, tmp, task_vars)

roles/openshift_health_checker/test/openshift_check_test.py

@@ -1,6 +1,6 @@
 import pytest
 
-from openshift_checks import get_var, OpenShiftCheckException
+from openshift_checks import OpenShiftCheck, get_var, OpenShiftCheckException
 
 
 # Fixtures
@@ -22,6 +22,41 @@ def missing_keys(request):
 # Tests
 
 
+def test_OpenShiftCheck_init():
+    class TestCheck(OpenShiftCheck):
+        name = "test_check"
+        run = NotImplemented
+
+    # initialization requires at least one argument (apart from self)
+    with pytest.raises(TypeError) as excinfo:
+        TestCheck()
+    assert 'execute_module' in str(excinfo.value)
+    assert 'module_executor' in str(excinfo.value)
+
+    execute_module = object()
+
+    # initialize with positional argument
+    check = TestCheck(execute_module)
+    # new recommended name
+    assert check.execute_module == execute_module
+    # deprecated attribute name
+    assert check.module_executor == execute_module
+
+    # initialize with keyword argument, recommended name
+    check = TestCheck(execute_module=execute_module)
+    # new recommended name
+    assert check.execute_module == execute_module
+    # deprecated attribute name
+    assert check.module_executor == execute_module
+
+    # initialize with keyword argument, deprecated name
+    check = TestCheck(module_executor=execute_module)
+    # new recommended name
+    assert check.execute_module == execute_module
+    # deprecated attribute name
+    assert check.module_executor == execute_module
+
+
 @pytest.mark.parametrize("keys,expected", [
     (("foo",), 42),
     (("bar", "baz"), "openshift"),