Added support for private GitHub repos

Implements: blueprint support-private-github-repos
Closes-Bug: 1319604
Change-Id: I6f0181a59165e5ab7e0b2d38aab07c8b06ec7462

solum/api/controllers/v1/datamodel/types.py

@@ -80,3 +80,29 @@ class Base(wtypes.Base):
                     for k in keys
                     if hasattr(self, k) and
                     getattr(self, k) != wsme.Unset)
+
+
+class MultiType(wtypes.UserType):
+    """A complex type that represents one or more types.
+
+    Used for validating that a value is an instance of one of the types.
+
+    :param *types: Variable-length list of types.
+    """
+
+    def __init__(self, *types):
+        self.types = types
+
+    def __str__(self):
+        return ' | '.join(map(str, self.types))
+
+    def validate(self, value):
+        for t in self.types:
+            if t is wsme.types.text and isinstance(value, wsme.types.bytes):
+                value = value.decode()
+            if isinstance(value, t):
+                return value
+        else:
+            raise ValueError(
+                _("Wrong type. Expected '%(type)s', got '%(value)s'")
+                % {'type': self.types, 'value': type(value)})