Avoid None value when missing data in ansible log

When missing datas in ansible log for some reasons,
we need to avoid None value, and just ignore it.

Change-Id: Ic6e05bf65bf01eeafd5e9222f3410a4dc5a50c9e

validations_libs/tests/fakes.py

@@ -33,6 +33,31 @@ GROUPS_LIST = [
     ('group3', 'Group3 description'),
 ]
 
+BAD_VALIDATIONS_LOGS_CONTENTS_LIST = [{
+    'plays': [{
+        'play': {
+            'duration': {
+                'end': '2019-11-25T13:40:17.538611Z',
+            },
+            'host': 'undercloud',
+            'id': '008886df-d297-1eaa-2a74-000000000008',
+            'validation_id': '512e',
+            'validation_path':
+            '/usr/share/openstack-tripleo-validations/playbooks'
+            }}],
+    'stats': {
+        'undercloud': {
+            'changed': 0,
+            'failures': 0,
+            'ignored': 0,
+            'ok': 1,
+            'rescued': 0,
+            'skipped': 1
+        }
+    },
+    'validation_output': []
+}]
+
 VALIDATIONS_LOGS_CONTENTS_LIST = [{
     'plays': [{
         'play': {

validations_libs/tests/test_validation_log.py

@@ -134,6 +134,15 @@ class TestValidationLog(TestCase):
         unreachable = val.get_unreachable_hosts
         self.assertEquals(unreachable, '')
 
+    @mock.patch('json.load',
+                return_value=fakes.BAD_VALIDATIONS_LOGS_CONTENTS_LIST[0])
+    @mock.patch('six.moves.builtins.open')
+    def test_get_unreachable_hosts_bad_data(self, mock_open, mock_json):
+        val = ValidationLog(
+            logfile='/tmp/123_foo_2020-03-30T13:17:22.447857Z.json')
+        unreachable = val.get_unreachable_hosts
+        self.assertEquals(unreachable, '')
+
     @mock.patch('json.load',
                 return_value=fakes.VALIDATIONS_LOGS_CONTENTS_LIST[0])
     @mock.patch('six.moves.builtins.open')
@@ -143,6 +152,15 @@ class TestValidationLog(TestCase):
         duration = val.get_duration
         self.assertEquals(duration, '0:00:03.753')
 
+    @mock.patch('json.load',
+                return_value=fakes.BAD_VALIDATIONS_LOGS_CONTENTS_LIST[0])
+    @mock.patch('six.moves.builtins.open')
+    def test_get_duration_bad_data(self, mock_open, mock_json):
+        val = ValidationLog(
+            logfile='/tmp/123_foo_2020-03-30T13:17:22.447857Z.json')
+        duration = val.get_duration
+        self.assertEquals(duration, '')
+
     @mock.patch('json.load',
                 return_value=fakes.VALIDATIONS_LOGS_CONTENTS_LIST[0])
     @mock.patch('six.moves.builtins.open')
@@ -152,6 +170,15 @@ class TestValidationLog(TestCase):
         start_time = val.get_start_time
         self.assertEquals(start_time, '2019-11-25T13:40:14.404623Z')
 
+    @mock.patch('json.load',
+                return_value=fakes.BAD_VALIDATIONS_LOGS_CONTENTS_LIST[0])
+    @mock.patch('six.moves.builtins.open')
+    def test_get_start_time_bad_data(self, mock_open, mock_json):
+        val = ValidationLog(
+            logfile='/tmp/123_foo_2020-03-30T13:17:22.447857Z.json')
+        start_time = val.get_start_time
+        self.assertEquals(start_time, '')
+
     @mock.patch('six.moves.builtins.open')
     def test_log_not_found(self, mock_open):
         mock_open.side_effect = IOError()

validations_libs/validation_logs.py

@@ -126,14 +126,16 @@ class ValidationLog(object):
     @property
     def get_duration(self):
         """Return duration of Ansible runtime"""
-        return ', '.join([play['play']['duration'].get('time_elapsed') for
-                          play in self.content['plays']])
+        duration = [play['play']['duration'].get('time_elapsed') for
+                    play in self.content['plays']]
+        return ', '.join(filter(None, duration))
 
     @property
     def get_start_time(self):
         """Return Ansible  start time"""
-        return ', '.join([play['play']['duration'].get('start') for
-                          play in self.content['plays']])
+        start_time = [play['play']['duration'].get('start') for
+                      play in self.content['plays']]
+        return ', '.join(filter(None, start_time))
 
 
 class ValidationLogs(object):