Add new artifact: Secret

The purpose Secret artifact, is to enable the user to store
'secret' data such as: Private key, Certificate, Password, SSH keys Etc.

Change-Id: I89df9f7eba576a9086cdae4c4f3379caec2b8df7

glare/objects/secret.py

@@ -0,0 +1,90 @@
+# Copyright 2017 OpenStack Foundation
+# All Rights Reserved.
+#
+#    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.
+
+from glare.objects import base as base_artifact
+from glare.objects.meta import validators
+from glare.objects.meta import wrappers
+from oslo_versionedobjects import fields
+
+Field = wrappers.Field.init
+Blob = wrappers.BlobField.init
+Dict = wrappers.DictField.init
+Folder = wrappers.FolderField.init
+
+
+class Secret(base_artifact.BaseArtifact):
+    """The purpose this glare artifact, Secret, is to enable the user to store
+    'secret' data such as: Private key, Certificate, Password, SSH keys Etc.
+    """
+    VERSION = '1.0'
+
+    @classmethod
+    def get_type_name(cls):
+        return "secrets"
+
+    fields = {
+        'payload': Blob(  # The encrypted secret data
+            description="The secret's data to be stored"
+        ),
+
+        'payload_content_encoding': Field(
+            fields.StringField,
+            required_on_activate=False,
+            default="base64",
+            filter_ops=[],
+            validators=[validators.AllowedValues(["base64"])],
+            description="Required if payload is encoded. "
+                        "The encoding used for the payload to be"
+                        " able to include it in the JSON request "
+                        "(only base64 supported)"
+        ),
+
+        'secret_type': Field(
+            fields.StringField,
+            required_on_activate=False,
+            default="opaque",
+            sortable=True,
+            filter_ops=(wrappers.FILTER_EQ,),
+            validators=[validators.AllowedValues([
+                "symmetric", "public", "private",
+                "passphrase", "certificate", "opaque"])],
+            description="Used to indicate the type of secret being stored",
+        ),
+
+        'algorithm': Field(
+            fields.StringField,
+            required_on_activate=False,
+            filter_ops=(wrappers.FILTER_EQ,),
+            description="Metadata provided by a user or system for"
+                        " informational purposes"
+        ),
+
+        'bit_length': Field(
+            fields.IntegerField,
+            required_on_activate=False,
+            sortable=True,
+            validators=[validators.MinNumberSize(1)],
+            description="Metadata provided by a user or system"
+                        " for informational purposes."
+                        " Value must be greater than zero."
+        ),
+
+        'mode': Field(
+            fields.StringField,
+            required_on_activate=False,
+            filter_ops=(wrappers.FILTER_EQ,),
+            description="Metadata provided by a user or"
+                        " system for informational purposes."),
+    }