[Bug 1852317] Re: Autopkgtest fails because Python 3.8's hmc.new() needs digest parameter

[Launchpad Bug Tracker]

This bug was fixed in the package python-taskflow - 3.7.1-0ubuntu3

---------------
python-taskflow (3.7.1-0ubuntu3) focal; urgency=medium

  * Fix working with Python 3.8 by passing digest to hmac.new()
    (LP: #1852317)

 -- Balint Reczey <rbalint at ubuntu.com>  Tue, 12 Nov 2019 16:52:52 +0100

** Changed in: python-taskflow (Ubuntu)
       Status: New => Fix Released

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Title:
  Autopkgtest fails because Python 3.8's hmc.new() needs digest
  parameter

Status in taskflow:
  New
Status in python-taskflow package in Ubuntu:
  Fix Released

Bug description:
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-focal/focal/amd64/p/python-
  taskflow/20191104_102436_6fd99@/log.gz

  ...
  taskflow.tests.unit.test_engines.ParallelEngineWithProcessTest.test_graph_flow_two_tasks
  ----------------------------------------------------------------------------------------

  Captured traceback:
  ~~~~~~~~~~~~~~~~~~~
      b'Traceback (most recent call last):'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/tests/unit/test_engines.py", line 867, in test_graph_flow_two_tasks'
      b'    engine = self._make_engine(flow)'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/tests/unit/test_engines.py", line 1522, in _make_engine'
      b'    return taskflow.engines.load(flow, flow_detail=flow_detail,'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/helpers.py", line 133, in load'
      b'    mgr = stevedore.driver.DriverManager('
      b'  File "/usr/lib/python3/dist-packages/stevedore/driver.py", line 53, in __init__'
      b'    super(DriverManager, self).__init__('
      b'  File "/usr/lib/python3/dist-packages/stevedore/named.py", line 78, in __init__'
      b'    extensions = self._load_plugins(invoke_on_load,'
      b'  File "/usr/lib/python3/dist-packages/stevedore/extension.py", line 203, in _load_plugins'
      b'    self._on_load_failure_callback(self, ep, err)'
      b'  File "/usr/lib/python3/dist-packages/stevedore/extension.py", line 191, in _load_plugins'
      b'    ext = self._load_one_plugin(ep,'
      b'  File "/usr/lib/python3/dist-packages/stevedore/named.py", line 156, in _load_one_plugin'
      b'    return super(NamedExtensionManager, self)._load_one_plugin('
      b'  File "/usr/lib/python3/dist-packages/stevedore/extension.py", line 227, in _load_one_plugin'
      b'    obj = plugin(*invoke_args, **invoke_kwds)'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/engine.py", line 589, in __init__'
      b'    self._task_executor = self._fetch_task_executor(self._options)'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/engine.py", line 637, in _fetch_task_executor'
      b'    return executor_cls(**kwargs)'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/process_executor.py", line 603, in __init__'
      b'    self._dispatcher = Dispatcher({}, self._auth_key,'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/process_executor.py", line 533, in __init__'
      b'    self.challenge_pieces = _encode_message(auth_key, CHALLENGE,'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/process_executor.py", line 276, in _encode_message'
      b'    message_mac = _calculate_hmac(auth_key, message)'
      b'  File "/tmp/autopkgtest.YG0BhS/build.G9O/src/taskflow/engines/action_engine/process_executor.py", line 268, in _calculate_hmac'
      b'    mac = hmac.new(auth_key, body).hexdigest()'
      b'  File "/usr/lib/python3.8/hmac.py", line 146, in new'
      b'    return HMAC(key, msg, digestmod)'
      b'  File "/usr/lib/python3.8/hmac.py", line 49, in __init__'
      b"    raise ValueError('`digestmod` is required.')"
      b'ValueError: `digestmod` is required.'
      b''

  ...

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