Add 'filtered' stdout callback plugin

lib/ansible/plugins/callback/filtered.py

@@ -0,0 +1,76 @@
+# (c) 2015, Andrew Gaffney <andrew@agaffney.org>
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+from ansible.plugins.callback.default import CallbackModule as CallbackModule_default
+
+class CallbackModule(CallbackModule_default):
+
+    CALLBACK_VERSION = 2.0
+    CALLBACK_TYPE = 'stdout'
+    CALLBACK_NAME = 'filtered'
+
+    def __init__(self):
+        self.super_ref = super(CallbackModule, self)
+        self.super_ref.__init__()
+        self.last_task = None
+        self.shown_title = False
+
+    def v2_playbook_on_task_start(self, task, is_conditional):
+        self.last_task = task
+        self.shown_title = False
+
+    def display_task_banner(self):
+        if not self.shown_title:
+            self.super_ref.v2_playbook_on_task_start(self.last_task, None)
+            self.shown_title = True
+
+    def v2_runner_on_failed(self, result, ignore_errors=False):
+        self.display_task_banner()
+        self.super_ref.v2_runner_on_failed(result, ignore_errors)
+
+    def v2_runner_on_ok(self, result):
+        if result._result.get('changed', False):
+            self.display_task_banner()
+            self.super_ref.v2_runner_on_ok(result)
+        else:
+            pass
+
+    def v2_runner_on_unreachable(self, result):
+        self.display_task_banner()
+        self.super_ref.v2_runner_on_unreachable(result)
+
+    def v2_runner_on_skipped(self, result):
+        pass
+
+    def v2_playbook_on_include(self, included_file):
+        pass
+
+    def v2_playbook_item_on_ok(self, result):
+        self.display_task_banner()
+        self.super_ref.v2_playbook_item_on_ok(result)
+
+    def v2_playbook_item_on_skipped(self, result):
+        pass
+
+    def v2_playbook_item_on_failed(self, result):
+        self.display_task_banner()
+        self.super_ref.v2_playbook_item_on_failed(result)
+