[Bug 1758882] Re: neutron-db-manage python-pecan failure

[Corey Bryant]

** Changed in: neutron (Ubuntu)
       Status: Invalid => Triaged

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Title:
  neutron-db-manage python-pecan failure

Status in neutron package in Ubuntu:
  Triaged

Bug description:
  when installing gnocchi, ceilometer and neutron on the same node.

  Ubuntu 16.04
  Queens UCA

  root at unassigned:~# neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade heads
  Traceback (most recent call last):
    File "/usr/bin/neutron-db-manage", line 10, in <module>
      sys.exit(main())
    File "/usr/lib/python2.7/dist-packages/neutron/db/migration/cli.py", line 652, in main
      return_val |= bool(CONF.command.func(config, CONF.command.name))
    File "/usr/lib/python2.7/dist-packages/neutron/db/migration/cli.py", line 171, in do_upgrade
      run_sanity_checks(config, revision)
    File "/usr/lib/python2.7/dist-packages/neutron/db/migration/cli.py", line 636, in run_sanity_checks
      script_dir.run_env()
    File "/usr/lib/python2.7/dist-packages/alembic/script/base.py", line 425, in run_env
      util.load_python_file(self.dir, 'env.py')
    File "/usr/lib/python2.7/dist-packages/alembic/util/pyfiles.py", line 93, in load_python_file
      module = load_module_py(module_id, path)
    File "/usr/lib/python2.7/dist-packages/alembic/util/compat.py", line 75, in load_module_py
      mod = imp.load_source(module_id, path, fp)
    File "/usr/lib/python2.7/dist-packages/neutron/db/migration/alembic_migrations/env.py", line 24, in <module>
      from neutron.db.migration.models import head  # noqa
    File "/usr/lib/python2.7/dist-packages/neutron/db/migration/models/head.py", line 29, in <module>
      from neutron.db import agentschedulers_db  # noqa
    File "/usr/lib/python2.7/dist-packages/neutron/db/agentschedulers_db.py", line 32, in <module>
      from neutron.db import agents_db
    File "/usr/lib/python2.7/dist-packages/neutron/db/agents_db.py", line 45, in <module>
      from neutron.extensions import agent as ext_agent
    File "/usr/lib/python2.7/dist-packages/neutron/extensions/agent.py", line 25, in <module>
      from neutron.api.v2 import base
    File "/usr/lib/python2.7/dist-packages/neutron/api/v2/base.py", line 37, in <module>
      from neutron import quota
    File "/usr/lib/python2.7/dist-packages/neutron/quota/__init__.py", line 30, in <module>
      from neutron.db.quota import api as quota_api
    File "/usr/lib/python2.7/dist-packages/neutron/db/quota/api.py", line 110, in <module>
      def set_quota_usage_dirty(context, resource, tenant_id, dirty=True):
    File "/usr/lib/python2.7/dist-packages/neutron/db/api.py", line 146, in decorator
      ctx_arg_index = p_util.getargspec(f).args.index(context_var_name)
    File "/usr/lib/python2.7/dist-packages/pecan/util.py", line 44, in getargspec
      reverse=True
    File "/usr/lib/python2.7/dist-packages/pecan/util.py", line 43, in <lambda>
      key=lambda c: 'self' in c.cell_contents.__code__.co_varnames,
  AttributeError: '_TransactionContextManager' object has no attribute '__code__'

  root at unassigned:~# dpkg -l | grep -i neutron
  ii  neutron-common                      2:12.0.0-0ubuntu1.3~cloud0                  all          Neutron is a virtual network service for Openstack - common
  ii  neutron-plugin-ml2                  2:12.0.0-0ubuntu1.3~cloud0                  all          Neutron is a virtual network service for Openstack - ML2 plugin
  ii  neutron-server                      2:12.0.0-0ubuntu1.3~cloud0                  all          Neutron is a virtual network service for Openstack - server
  ii  python-neutron                      2:12.0.0-0ubuntu1.3~cloud0                  all          Neutron is a virtual network service for Openstack - Python library
  ii  python-neutron-fwaas                1:12.0.0-0ubuntu1~cloud0                    all          Firewall-as-a-Service driver for OpenStack Neutron
  ii  python-neutron-lib                  1.13.0-0ubuntu1~cloud0                      all          Neutron shared routines and utilities - Python 2.7
  ii  python-neutronclient                1:6.7.0-0ubuntu1~cloud0                     all          client API library for Neutron - Python 2.7

  root at unassigned:~# dpkg -l | grep -i pecan
  ii  python-pecan                        1.0.2-2ubuntu1                              all          WSGI object-dispatching web framework - Python 2.x
  ii  python3-pecan                       1.2.1-2~cloud0                              all          WSGI object-dispatching web framework - Python 3.x

  gnocchi packages say python-pecan (>= 0.9) and neutron packages say python-pecan (>= 1.0.0)
  these are available:

  root at unassigned:~# apt-cache policy python-pecan
  python-pecan:
    Installed: 1.0.2-2ubuntu1
    Candidate: 1.2.1-2~cloud0
    Version table:
       1.2.1-2~cloud0 500
          500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/queens/main amd64 Packages
          500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/queens/main i386 Packages
   *** 1.0.2-2ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
          500 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages
          100 /var/lib/dpkg/status

  root at unassigned:~# apt-cache policy python3-pecan
  python3-pecan:
    Installed: 1.2.1-2~cloud0
    Candidate: 1.2.1-2~cloud0
    Version table:
   *** 1.2.1-2~cloud0 500
          500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/queens/main amd64 Packages
          500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/queens/main i386 Packages
          100 /var/lib/dpkg/status
       1.0.2-2ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
          500 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages

  why would not the latest version of python-pecan get installed?
  after upgrading to the proper version neutron-db-manage is working

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