1 files changed, 68 insertions, 0 deletions
diff --git a/nfvparser/toscaparser/triggers.py b/nfvparser/toscaparser/triggers.py
new file mode 100644
index 0000000..9edeef4
--- /dev/null
+++ b/nfvparser/toscaparser/triggers.py
@@ -0,0 +1,68 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+
+import logging
+
+from toscaparser.common.exception import ExceptionCollector
+from toscaparser.common.exception import UnknownFieldError
+from toscaparser.entity_template import EntityTemplate
+
+SECTIONS = (DESCRIPTION, EVENT, SCHEDULE, TARGET_FILTER, CONDITION, ACTION) = \
+           ('description', 'event_type', 'schedule',
+            'target_filter', 'condition', 'action')
+CONDITION_KEYNAMES = (CONTRAINT, PERIOD, EVALUATIONS, METHOD) = \
+                     ('constraint', 'period', 'evaluations', 'method')
+log = logging.getLogger('tosca')
+
+
+class Triggers(EntityTemplate):
+
+    '''Triggers defined in policies of topology template'''
+
+    def __init__(self, name, trigger_tpl):
+        self.name = name
+        self.trigger_tpl = trigger_tpl
+        self._validate_keys()
+        self._validate_condition()
+
+    def get_description(self):
+        return self.trigger_tpl['description']
+
+    def get_event(self):
+        return self.trigger_tpl['event_type']
+
+    def get_schedule(self):
+        return self.trigger_tpl['schedule']
+
+    def get_target_filter(self):
+        return self.trigger_tpl['target_filter']
+
+    def get_condition(self):
+        return self.trigger_tpl['condition']
+
+    def get_action(self):
+        return self.trigger_tpl['action']
+
+    def _validate_keys(self):
+        for key in self.trigger_tpl.keys():
+            if key not in SECTIONS:
+                ExceptionCollector.appendException(
+                    UnknownFieldError(what='Triggers "%s"' % self.name,
+                                      field=key))
+
+    def _validate_condition(self):
+        for key in self.get_condition():
+            if key not in CONDITION_KEYNAMES:
+                ExceptionCollector.appendException(
+                    UnknownFieldError(what='Triggers "%s"' % self.name,
+                                      field=key))