2 files changed, 60 insertions, 30 deletions

diff --git a/onap_data_provider/resources/sdc_properties_mixins.py b/onap_data_provider/resources/sdc_properties_mixins.py
index 9a2b625..28d06c3 100644
--- a/onap_data_provider/resources/sdc_properties_mixins.py
+++ b/onap_data_provider/resources/sdc_properties_mixins.py
@@ -14,15 +14,17 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 """
-from typing import Any, List, Union
+import logging
+from abc import ABC
+from typing import Any, Dict, List, Union
 
 from onapsdk.exceptions import SDKException, ValidationError, ParameterError  # type: ignore
 from onapsdk.sdc.component import Component  # type: ignore
-from onapsdk.sdc.properties import Property  # type: ignore
+from onapsdk.sdc.properties import NestedInput, Property  # type: ignore
 from onapsdk.sdc.sdc_resource import SdcResource  # type: ignore
 
 
-class SdcPropertiesMixins:
+class SdcPropertiesMixins(ABC):
     """Mixins class for properties handling.
 
     Mixin class for propoerties preparation for SdcResources and Components.
@@ -66,20 +68,67 @@ class SdcPropertiesMixins:
                         f"for resourceclass '{str(propresource.__class__.__name__)}' is not provided yet!"
                     )
 
+    def declare_input(self, propresource: Union[SdcResource, Component], property_data: Dict[str, Any]) -> None:
+        """Declare input.
+
+        Method to get a property from a component and create an input for it.
+
+        Args:
+            propresource (Union[SdcResource, Component]): Resource to create an input
+            property_data (Dict[str, Any]): Data used to create an input
+
+        Raises:
+            ValidationError: Provided data is invalid - missing property type
+            ParameterError: Declaring input returns an SDC error
+
+        """
+        proptype = property_data.get("type")
+        if proptype is None:
+            raise ValidationError(
+                "New input '{0}' is missing a type!".format(
+                    str(property_data["name"])
+                )
+            )
+
+        property = Property(
+            name=property_data["name"],
+            property_type=proptype,
+            value=property_data.get("value"),
+        )
+        try:
+            propresource.add_property(property)
+            propresource.declare_input(property)
+        except SDKException:
+            raise ParameterError(
+                f"Creation of new input '{str(property_data['name'])}' is not provided yet!"
+            )
+
+    def declare_nested_input(self, propresource: Union[SdcResource, Component], data: Dict[str, Any]) -> None:
+        """Declare nested input.
+
+        Args:
+            propresource (SdcResource): Resource for which nested input is going to be declared
+            data (Dict[str, Any]): Data used for input creation.
+        """
+        if not isinstance(propresource, SdcResource):
+            logging.error("Can't declare nested inputs for components!")
+            return
+        comp: Component = propresource.get_component_by_name(data["resource"])
+        propresource.declare_input(NestedInput(comp.sdc_resource, comp.sdc_resource.get_input(data["name"])))
+
     def set_inputs(
-        self, propresource: Union[SdcResource, Component], data: List[Any]
+        self, propresource: Union[SdcResource, Component], data: List[Dict[str, Any]]
     ) -> None:
         """Set inputs of an  SdcResource.
 
         Args:
             sdcresource (SdcResource): the SdcResource the inputs should belong to
             data (Dict[str, Any]): Data needed to create resource.
-
-        Raises ValidationError
         """
-        for property_data in data:
-
-            if any(
+        for property_data in data:  # type: Dict[str, Any]
+            if property_data.get("nested-input"):
+                self.declare_nested_input(propresource, property_data)
+            elif any(
                 (prop.name == property_data["name"] for prop in propresource.inputs)
             ):
                 propresource.set_input_default_value(
@@ -87,23 +136,4 @@ class SdcPropertiesMixins:
                     property_data.get("value"),
                 )
             else:
-                proptype = property_data.get("type")
-                if proptype is None:
-                    raise ValidationError(
-                        "New input '{0}' is missing a type!".format(
-                            str(property_data["name"])
-                        )
-                    )
-
-                property = Property(
-                    name=property_data["name"],
-                    property_type=proptype,
-                    value=property_data.get("value"),
-                )
-                try:
-                    propresource.add_property(property)
-                    propresource.declare_input(property)
-                except SDKException:
-                    raise ParameterError(
-                        f"Creation of new input '{str(property_data['name'])}' is not provided yet!"
-                    )
+                self.declare_input(propresource, property_data)
diff --git a/onap_data_provider/resources/xnf_resource.py b/onap_data_provider/resources/xnf_resource.py
index efede03..63b01dc 100644
--- a/onap_data_provider/resources/xnf_resource.py
+++ b/onap_data_provider/resources/xnf_resource.py
@@ -24,7 +24,7 @@ from onapsdk.sdc.properties import Property  # type: ignore
 from .sdc_properties_mixins import SdcPropertiesMixins
 
 
-class XnfResource(ABC, SdcPropertiesMixins):
+class XnfResource(SdcPropertiesMixins, ABC):
     """Xnf resource class.
 
     Network function base class.