taskflow py35 unit test failed

[ChangBo Guo(gcb)]

taskflow unit tests failed on Python 3 recently. the root cause is that dict.keys() returns instance

dict_keys, which does work well with kombu when encoding it to json. raise error as below:

ft1.36: taskflow.tests.test_examples.ExamplesTestCase.test_wbe_event_sender_StringException: Empty attachments:
  pythonlogging:''
  stderr
  stdout

Traceback (most recent call last):
  File "/home/jenkins/workspace/gate-taskflow-python35/taskflow/tests/test_examples.py", line 111, in test_example
    self._check_example(example_name)
  File "/home/jenkins/workspace/gate-taskflow-python35/taskflow/tests/test_examples.py", line 126, in _check_example
    output = run_example(name)
  File "/home/jenkins/workspace/gate-taskflow-python35/taskflow/tests/test_examples.py", line 81, in run_example
    % (name, rc, stdout, stderr))
RuntimeError: Example wbe_event_sender failed, return code=1
<<<Begin captured STDOUT>>>
Running 1 workers.
Executing some work.
Recieved event 'update_progress'
Details = {'progress': 0.0}
Recieved event 'update_progress'
Details = {'progress': 0.0}
Stopping workers.
<<<End captured STDOUT>>>
<<<Begin captured STDERR>>>
CRITICAL:taskflow.engines.worker_based.server:Failed to send reply to '192635d8-eac8-46ef-b575-bd85f1d8f7b3' with notify response '<Notify object at 0x7fefb9f606d8 with contents {'topic': 'worker-1', 'tasks': dict_keys(['__main__.EventReporter'])}>'
Traceback (most recent call last):
  File "/home/jenkins/workspace/gate-taskflow-python35/.tox/py35/lib/python3.5/site-packages/kombu/serialization.py", line 50, in _reraise_errors
    yield
  File "/home/jenkins/workspace/gate-taskflow-python35/.tox/py35/lib/python3.5/site-packages/kombu/serialization.py", line 221, in dumps
    payload = encoder(data)
  File "/home/jenkins/workspace/gate-taskflow-python35/.tox/py35/lib/python3.5/site-packages/kombu/utils/json.py", line 72, in dumps
    **dict(default_kwargs, **kwargs))
  File "/usr/lib/python3.5/json/__init__.py", line 237, in dumps
    **kw).encode(obj)
  File "/usr/lib/python3.5/json/encoder.py", line 198, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.5/json/encoder.py", line 256, in iterencode
    return _iterencode(o, 0)
  File "/home/jenkins/workspace/gate-taskflow-python35/.tox/py35/lib/python3.5/site-packages/kombu/utils/json.py", line 62, in default
    return super(JSONEncoder, self).default(o)
  File "/usr/lib/python3.5/json/encoder.py", line 179, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError: dict_keys(['__main__.EventReporter']) is not JSON serializable

For more error logs, please see
http://logs.openstack.org/66/460966/1/check/gate-taskflow-python35/f6ea5e1/testr_results.html.gz

[ChangBo Guo(gcb) (glongwave)]

Fix in https://review.openstack.org/461987

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/461987
Committed: https://git.openstack.org/cgit/openstack/taskflow/commit/?id=365dff9e2b88a07188f94d74ed6b78487426f7bb
Submitter: Jenkins
Branch: master

commit 365dff9e2b88a07188f94d74ed6b78487426f7bb
Author: ChangBo Guo(gcb) <email address hidden>
Date: Wed May 3 12:39:33 2017 +0800

    Fix py35 test failure

    dict.keys() returns object dict_keys on Python 3, can't work well
    with kombu recently, convert it to list before futhur processing.

    Closes-Bug: #1687855
    Change-Id: I9dcfadd8f16eccce06f4cde3b2a6669f28a3f8bc

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/taskflow 2.11.0 release.