Add type attributes

Read the schema definitions of type attributes
into node type.

Change-Id: I555382c656eab87972619a4e92c9f057ce1de9e1
Implements: blueprint tosca-type-attributes

translator/toscalib/elements/TOSCA_definition.yaml

@@ -86,6 +86,9 @@ tosca.nodes.Compute:
       description: >
         The primary IP address assigned by the cloud provider that applications
         may use to access the Compute node.
+  attributes:
+    ip_address:
+      type: string
   capabilities:
       host:
          type: tosca.capabilities.Container

translator/toscalib/elements/attribute_definition.py

@@ -0,0 +1,23 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+#
+#    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.
+
+
+class AttributeDef(object):
+    '''TOSCA built-in Attribute type.'''
+
+    def __init__(self, name, value=None, schema=None):
+        self.name = name
+        self.value = value
+        self.schema = schema

translator/toscalib/elements/nodetype.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 from translator.toscalib.common.exception import InvalidNodeTypeError
+from translator.toscalib.elements.attribute_definition import AttributeDef
 from translator.toscalib.elements.capabilitytype import CapabilityTypeDef
 from translator.toscalib.elements.interfaces import InterfacesDef
 from translator.toscalib.elements.property_definition import PropertyDef
@@ -21,10 +22,10 @@ from translator.toscalib.elements.relationshiptype import RelationshipType
 from translator.toscalib.elements.statefulentitytype import StatefulEntityType
 
 
-SECTIONS = (DERIVED_FROM, PROPERTIES, REQUIREMENTS,
+SECTIONS = (DERIVED_FROM, PROPERTIES, ATTRIBUTES, REQUIREMENTS,
             INTERFACES, CAPABILITIES) = \
-           ('derived_from', 'properties', 'requirements', 'interfaces',
-            'capabilities')
+           ('derived_from', 'properties', 'attributes', 'requirements',
+            'interfaces', 'capabilities')
 
 
 class NodeType(StatefulEntityType):
@@ -58,6 +59,15 @@ class NodeType(StatefulEntityType):
                 properties.append(PropertyDef(prop, None, schema))
         return properties
 
+    @property
+    def attributes_def(self):
+        '''Return a list of attribute definition objects.'''
+        attrs = self.get_value(ATTRIBUTES)
+        if attrs:
+            return [AttributeDef(attr, None, schema)
+                    for attr, schema in attrs.items()]
+        return []
+
     @property
     def relationship(self):
         '''Return a dictionary of relationships to other node types.

translator/toscalib/tests/test_toscadef.py

@@ -43,6 +43,11 @@ class ToscaDefTest(TestCase):
         self.assertTrue([p.required for p in compute_type.properties_def
                          if p.name == 'os_type'])
 
+    def test_attributes_def(self):
+        self.assertEqual(
+            ['ip_address'],
+            sorted([p.name for p in compute_type.attributes_def]))
+
     def test_requirements(self):
         self.assertEqual(compute_type.requirements, None)
         self.assertEqual(