Message objects do not support str()

[Henry]

When creating process of cinder-powervc, due to the incorrec config file in keystone connection, but it shows an other error message like this:

2017-06-02 21:27:28.119 2570 CRITICAL cinder [req-3134fa31-aa77-469f-8d28-6f60d4d915f2 - - - - -] UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.

2017-06-02 21:27:28.119 2570 TRACE cinder Traceback (most recent call last):

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/.venv/bin/cinder-volume", line 20, in <module>

2017-06-02 21:27:28.119 2570 TRACE cinder sys.exit(main())

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/cinder/cinder/cmd/volume.py", line 73, in main

2017-06-02 21:27:28.119 2570 TRACE cinder binary='cinder-volume')

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/cinder/cinder/service.py", line 249, in create

2017-06-02 21:27:28.119 2570 TRACE cinder service_name=service_name)

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/cinder/cinder/service.py", line 129, in __init__

2017-06-02 21:27:28.119 2570 TRACE cinder *args, **kwargs)

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/cinder/cinder/volume/manager.py", line 219, in __init__

2017-06-02 21:27:28.119 2570 TRACE cinder is_vol_db_empty=vol_db_empty)

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/.venv/local/lib/python2.7/site-packages/oslo_utils/importutils.py", line 38, in import_object

2017-06-02 21:27:28.119 2570 TRACE cinder return import_class(import_str)(*args, **kwargs)

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/.venv/local/lib/python2.7/site-packages/oslo_utils/importutils.py", line 27, in import_class

2017-06-02 21:27:28.119 2570 TRACE cinder __import__(mod_str)

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/powervc-driver/cinder-powervc/powervc/volume/driver/powervc.py", line 57, in <module>

2017-06-02 21:27:28.119 2570 TRACE cinder from powervc.common.client import factory

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/powervc-driver/cinder-powervc/powervc/common/client/factory.py", line 78, in <module>

2017-06-02 21:27:28.119 2570 TRACE cinder initialize_local_servicecatalog()

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/powervc-driver/cinder-powervc/powervc/common/client/factory.py", line 69, in initialize_local_servicecatalog

2017-06-02 21:27:28.119 2570 TRACE cinder LOG.info(_('Keystone service is not ready. ' + str(e)))

2017-06-02 21:27:28.119 2570 TRACE cinder File "/opt/openstack/.venv/local/lib/python2.7/site-packages/oslo_i18n/_message.py", line 167, in __str__

2017-06-02 21:27:28.119 2570 TRACE cinder raise UnicodeError(msg)

2017-06-02 21:27:28.119 2570 TRACE cinder UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.

According to error information, It should be use unicode but not str to show error message.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/517923

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/517923
Committed: https://git.openstack.org/cgit/openstack/powervc-driver/commit/?id=161721311a9534e61c3cefd2d14edd5ca34bd308
Submitter: Zuul
Branch: master

commit 161721311a9534e61c3cefd2d14edd5ca34bd308
Author: guanzuoyu <email address hidden>
Date: Mon Nov 6 19:21:54 2017 +0800

    Modify incorrect method to translate error message

    When process of powervc-drver connecting keystone failed, it would
    give the error message in factory.py, but message objects do not
    support str(), so it needs to be modified by using unicode.

    Change-Id: I45bbb488300a5fe5c4e4f71265c3abacd775f41d
    Closes-Bug: #1730356