Allow use of TOSCA types by short name in the TOSCA template

Let user access TOSCA normative types by referencing it's short name in the
TOSCA service template. For example, tosca.nodes.Compute should be accessible
by specifying just Compute.

Change-Id: I448699895c2cd533835f94bca9fbc34a3712fbcf
Closes-Bug: #1349588

translator/toscalib/elements/capabilitytype.py

@@ -22,6 +22,10 @@ class CapabilityTypeDef(EntityType):
 
     def __init__(self, name, ctype, ntype, properties):
         self.name = name
+        if self.CAPABILITY_PREFIX not in ctype:
+            ctype = self.CAPABILITY_PREFIX + ctype
+        if self.NODE_PREFIX not in ntype:
+            ntype = self.NODE_PREFIX + ntype
         self.type = ctype
         self.nodetype = ntype
         self.properties = properties

translator/toscalib/elements/entitytype.py

@@ -37,6 +37,11 @@ class EntityType(object):
                          'tosca.relationships.HostedOn',
                          'tosca.relationships.ConnectsTo')
 
+    NODE_PREFIX = 'tosca.nodes.'
+    RELATIONSHIP_PREFIX = 'tosca.relationships.'
+    CAPABILITY_PREFIX = 'tosca.capabilities.'
+    INTERFACE_PREFIX = 'tosca.interfaces.node.'
+
     def derived_from(self, defs):
         '''Return a type this type is derived from.'''
         return self.entity_value(defs, 'derived_from')

translator/toscalib/elements/interfaces.py

@@ -31,6 +31,8 @@ class InterfacesDef(StatefulEntityType):
                  node_template=None, name=None, value=None):
         self.ntype = node_type
         self.node_template = node_template
+        if self.INTERFACE_PREFIX not in interfacetype:
+            interfacetype = self.INTERFACE_PREFIX + interfacetype
         self.type = interfacetype
         self.name = name
         self.value = value

translator/toscalib/elements/nodetype.py

@@ -33,6 +33,8 @@ class NodeType(StatefulEntityType):
 
     def __init__(self, ntype, custom_def=None):
         super(NodeType, self).__init__()
+        if self.NODE_PREFIX not in ntype:
+            ntype = self.NODE_PREFIX + ntype
         if ntype in list(self.TOSCA_DEF.keys()):
             self.defs = self.TOSCA_DEF[ntype]
         elif custom_def and ntype in list(custom_def.keys()):

translator/toscalib/elements/relationshiptype.py

@@ -22,6 +22,8 @@ class RelationshipType(StatefulEntityType):
     def __init__(self, type, capability_name):
         super(RelationshipType, self).__init__()
         self.defs = self.TOSCA_DEF[type]
+        if self.RELATIONSHIP_PREFIX not in type:
+            type = self.RELATIONSHIP_PREFIX + type
         self.type = type
         self.capability_name = capability_name
 

translator/toscalib/nodetemplate.py

@@ -41,10 +41,13 @@ class NodeTemplate(object):
         self.node_templates = node_templates
         self._validate_field()
         self.node_template = node_templates[self.name]
-        self.type = self.node_template[TYPE]
-        self.node_type = NodeType(self.type, custom_def)
+        self.node_type = NodeType(self.node_template[TYPE], custom_def)
         self.related = {}
 
+    @property
+    def type(self):
+        return self.node_type.type
+
     @property
     def requirements(self):
         return self.node_type.get_value(REQUIREMENTS, self.node_template)

translator/toscalib/tests/data/test_tosca_normative_type_by_shortname.yaml

@@ -0,0 +1,30 @@
+tosca_definitions_version: tosca_simple_1.0
+
+description: >
+  TOSCA simple profile with short type name for Compute.
+
+inputs:
+  cpus:
+    type: integer
+    description: Number of CPUs for the server.
+    constraints:
+      - valid_values: [ 1, 2, 4, 8 ]
+
+node_templates:
+  server:
+    type: Compute
+    properties:
+      # compute properties (flavor)
+      disk_size: 10
+      num_cpus: { get_input: cpus }
+      mem_size: 4096
+      # host image properties
+      os_arch: x86_64
+      os_type: Linux
+      os_distribution: Fedora
+      os_version: 18
+
+outputs:
+  server_address:
+    description: IP address of server instance.
+    value: { get_property: [server, ip_address] }

translator/toscalib/tests/test_toscatpl.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 import os
+from translator.toscalib.elements.nodetype import NodeType
 from translator.toscalib.functions import GetRefProperty
 from translator.toscalib.tests.base import TestCase
 from translator.toscalib.tosca_template import ToscaTemplate
@@ -138,3 +139,19 @@ class ToscaTemplateTest(TestCase):
             else:
                 raise AssertionError(
                     'Unexpected interface: {0}'.format(interface.name))
+
+    def test_normative_type_by_short_name(self):
+        #test template with a short name Compute
+        template = os.path.join(
+            os.path.dirname(os.path.abspath(__file__)),
+            "data/test_tosca_normative_type_by_shortname.yaml")
+
+        tosca_tpl = ToscaTemplate(template)
+        expected_type = "tosca.nodes.Compute"
+        for tpl in tosca_tpl.nodetemplates:
+            self.assertEqual(tpl.type, expected_type)
+        for tpl in tosca_tpl.nodetemplates:
+            compute_type = NodeType(tpl.type)
+            self.assertEqual(
+                ['tosca.capabilities.Container'],
+                [c.type for c in compute_type.capabilities])