put item fails while trying to put utf-8 string value

[Andrii Ostapenko]

trying to put item:
{
        "item": {
                "hash": {"S": "â"}
        }

}

we receive an error:
'ascii' codec can't decode byte 0xc3 in position 1: ordinal not in range(128)

Server side:

File "/opt/stack/magnetodb/magnetodb/common/middleware/fault.py", line 114, in process_request
    return req.get_response(self.application)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
    resp = self.call_func(req, *args, **self.kwargs)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
    return self.func(req, *args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/common/wsgi.py", line 61, in __call__
    response = req.get_response(self.application)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/keystonemiddleware/auth_token.py", line 755, in __call__
    return self._call_app(env, start_response)
  File "/usr/local/lib/python2.7/dist-packages/keystonemiddleware/auth_token.py", line 691, in _call_app
    return self._app(env, _fake_start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
    resp = self.call_func(req, *args, **self.kwargs)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
    return self.func(req, *args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/common/wsgi.py", line 61, in __call__
    response = req.get_response(self.application)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
    return resp(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/routes/middleware.py", line 131, in __call__
    response = self.app(environ, start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
    return resp(environ, start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
    resp = self.call_func(req, *args, **self.kwargs)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
    return self.func(req, *args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/common/wsgi.py", line 244, in __call__
    action_result = self.execute_action(action, request, **action_args)
  File "/opt/stack/magnetodb/magnetodb/common/wsgi.py", line 258, in execute_action
    return self.dispatch(self.controller, action, request, **action_args)
  File "/opt/stack/magnetodb/magnetodb/common/wsgi.py", line 267, in dispatch
    return method(*args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/common/probe.py", line 94, in wrapper
    return f(*args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/api/openstack/v1/request/put_item.py", line 77, in process_request
    expected_condition_map=expected_item_conditions,
  File "/opt/stack/magnetodb/magnetodb/storage/__init__.py", line 180, in put_item
    if_not_exist, expected_condition_map
  File "/opt/stack/magnetodb/magnetodb/storage/manager/simple_impl.py", line 313, in put_item
    if_not_exist, expected_condition_map
  File "/opt/stack/magnetodb/magnetodb/common/probe.py", line 94, in wrapper
    return f(*args, **kwargs)
  File "/opt/stack/magnetodb/magnetodb/storage/driver/cassandra/cassandra_impl.py", line 765, in put_item
    self.__cluster_handler.execute_query("".join(query_builder),
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1: ordinal not in range(128)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/139977

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/139977
Committed: https://git.openstack.org/cgit/stackforge/magnetodb/commit/?id=6118e86574e11bbcc005902c63b654f92c4d60ab
Submitter: Jenkins
Branch: master

commit 6118e86574e11bbcc005902c63b654f92c4d60ab
Author: Andrei V. Ostapenko <email address hidden>
Date: Fri Dec 5 20:48:12 2014 +0200

    Fixes bug with unicode data

    Closes-bug: #1399648
    Change-Id: I5397fddeb5fd04582baa48a31fc957f193330f1d