Adding demos for the GetAttributes operation

This change adds demo scripts for both clients that demonstrate
how to use the GetAttributes operation.

kmip/demos/pie/get_attributes.py

@@ -0,0 +1,53 @@
+# 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.
+
+import logging
+import sys
+
+from kmip.core import enums
+from kmip.demos import utils
+from kmip.pie import client
+
+
+if __name__ == '__main__':
+    logger = utils.build_console_logger(logging.INFO)
+
+    # Build and parse arguments
+    parser = utils.build_cli_parser(enums.Operation.GET_ATTRIBUTES)
+    opts, args = parser.parse_args(sys.argv[1:])
+
+    config = opts.config
+    unique_identifier = opts.uuid
+
+    attribute_names = []
+
+    # Build the client and connect to the server
+    with client.ProxyKmipClient(config=config) as client:
+        try:
+            retrieved_id, retrieved_attributes = client.get_attributes(
+                unique_identifier,
+                attribute_names
+            )
+            logger.info(
+                "Successfully retrieved attributes for object: {0}".format(
+                    retrieved_id
+                )
+            )
+            logger.info(
+                "Successfully retrieved {0} attributes:".format(
+                    len(retrieved_attributes)
+                )
+            )
+            for attribute in retrieved_attributes:
+                logger.info("Attribute: {0}".format(attribute))
+        except Exception as e:
+            logger.error(e)

kmip/demos/utils.py

@@ -174,6 +174,15 @@ def build_cli_parser(operation=None):
             dest="format",
             help=("Format in which to retrieve the secret. Supported formats "
                   "include: RAW, PKCS_1, PKCS_8, X_509"))
+    elif operation is Operation.GET_ATTRIBUTES:
+        parser.add_option(
+            "-i",
+            "--uuid",
+            action="store",
+            type="str",
+            default=None,
+            dest="uuid",
+            help="UUID of secret attributes to retrieve from the KMIP server")
     elif operation is Operation.GET_ATTRIBUTE_LIST:
         parser.add_option(
             "-i",