Add json callback to be used in replace of the default stdout to print a JSON structure to stdout

lib/ansible/plugins/callback/json.py

@@ -0,0 +1,83 @@
+# (c) 2016, Matt Martz <matt@sivel.net>
+#
+# 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
+
+import json
+
+from ansible.plugins.callback import CallbackBase
+
+
+class CallbackModule(CallbackBase):
+    CALLBACK_VERSION = 2.0
+    CALLBACK_TYPE = 'stdout'
+    CALLBACK_NAME = 'json'
+
+    def __init__(self, display=None):
+        super(CallbackModule, self).__init__(display)
+        self.results = []
+
+    def _new_play(self, play):
+        return {
+            'play': {
+                'name': play.name,
+                'id': str(play._uuid)
+            },
+            'tasks': []
+        }
+
+    def _new_task(self, task):
+        return {
+            'task': {
+                'name': task.name,
+                'id': str(task._uuid)
+            },
+            'hosts': {}
+        }
+
+    def v2_playbook_on_play_start(self, play):
+        self.results.append(self._new_play(play))
+
+    def v2_playbook_on_task_start(self, task, is_conditional):
+        self.results[-1]['tasks'].append(self._new_task(task))
+
+    def v2_runner_on_ok(self, result, **kwargs):
+        host = result._host
+        self.results[-1]['tasks'][-1]['hosts'][host.name] = result._result
+
+    def v2_playbook_on_stats(self, stats):
+        """Display info about playbook statistics"""
+
+        hosts = sorted(stats.processed.keys())
+
+        summary = {}
+        for h in hosts:
+            s = stats.summarize(h)
+            summary[h] = s
+
+        output = {
+            'plays': self.results,
+            'stats': summary
+        }
+
+        print(json.dumps(output, indent=4, sort_keys=True))
+
+    v2_runner_on_failed = v2_runner_on_ok
+    v2_runner_on_unreachable = v2_runner_on_ok
+    v2_runner_on_skipped = v2_runner_on_ok