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[Bug 1336172] [NEW] neutron/agent/linux/ovs_lib.py: int(ofport) returns 'NoneType' instead of string or a number

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Public bug reported:

I encountered this as part of "check-neutron-dsvm-functional" test job
failure from Jenkins.

Contextual log snippet (from console.html)[1]:
----------------------------------------------------
.
.
.
2014-07-01 03:31:05.323 | 2014-07-01 03:31:05.304 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', 'get', 'Interface', 'peertest1-e9c183', 'ofport']
2014-07-01 03:31:05.325 | 2014-07-01 03:31:05.306 | Exit code: 1
2014-07-01 03:31:05.327 | 2014-07-01 03:31:05.308 | Stdout: ''
2014-07-01 03:31:05.329 | 2014-07-01 03:31:05.310 | Stderr: 'sudo: no tty present and no askpass program specified\n'
2014-07-01 03:31:05.331 | 2014-07-01 03:31:05.312 | 2014-07-01 03:31:05,077    ERROR [neutron.agent.linux.utils] 
2014-07-01 03:31:05.333 | 2014-07-01 03:31:05.314 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']
2014-07-01 03:31:05.336 | 2014-07-01 03:31:05.316 | Exit code: 1
2014-07-01 03:31:05.338 | 2014-07-01 03:31:05.319 | Stdout: ''
2014-07-01 03:31:05.340 | 2014-07-01 03:31:05.321 | Stderr: 'sudo: no tty present and no askpass program specified\n'
2014-07-01 03:31:05.342 | 2014-07-01 03:31:05.323 | 2014-07-01 03:31:05,078    ERROR [neutron.agent.linux.ovs_lib] Unable to execute ['ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']. Exception: 
2014-07-01 03:31:05.345 | 2014-07-01 03:31:05.325 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']
2014-07-01 03:31:05.347 | 2014-07-01 03:31:05.328 | Exit code: 1
2014-07-01 03:31:05.349 | 2014-07-01 03:31:05.330 | Stdout: ''
2014-07-01 03:31:05.351 | 2014-07-01 03:31:05.332 | Stderr: 'sudo: no tty present and no askpass program specified\n'
2014-07-01 03:31:05.353 | 2014-07-01 03:31:05.334 | }}}
2014-07-01 03:31:05.355 | 2014-07-01 03:31:05.336 | 
2014-07-01 03:31:05.357 | 2014-07-01 03:31:05.338 | Traceback (most recent call last):
2014-07-01 03:31:05.359 | 2014-07-01 03:31:05.340 |   File "neutron/tests/functional/sanity/test_sanity.py", line 58, in test_ovs_patch_support_runs
2014-07-01 03:31:05.361 | 2014-07-01 03:31:05.342 |     checks.patch_supported(self.root_helper)
2014-07-01 03:31:05.363 | 2014-07-01 03:31:05.343 |   File "neutron/cmd/sanity/checks.py", line 35, in patch_supported
2014-07-01 03:31:05.365 | 2014-07-01 03:31:05.346 |     port = br.add_patch_port(patch_name, peer_name)
2014-07-01 03:31:05.367 | 2014-07-01 03:31:05.348 |   File "neutron/agent/linux/ovs_lib.py", line 275, in add_patch_port
2014-07-01 03:31:05.369 | 2014-07-01 03:31:05.350 |     return self.get_port_ofport(local_name)
2014-07-01 03:31:05.371 | 2014-07-01 03:31:05.352 |   File "neutron/agent/linux/ovs_lib.py", line 183, in get_port_ofport
2014-07-01 03:31:05.373 | 2014-07-01 03:31:05.354 |     int(ofport)
2014-07-01 03:31:05.375 | 2014-07-01 03:31:05.356 | TypeError: int() argument must be a string or a number, not 'NoneType'
2014-07-01 03:31:05.377 | 2014-07-01 03:31:05.358 | ======================================================================
2014-07-01 03:31:05.379 | 2014-07-01 03:31:05.360 | FAIL: process-returncode
2014-07-01 03:31:05.381 | 2014-07-01 03:31:05.362 | tags: worker-2
2014-07-01 03:31:05.383 | 2014-07-01 03:31:05.363 | ----------------------------------------------------------------------
2014-07-01 03:31:05.385 | 2014-07-01 03:31:05.366 | Binary content:
2014-07-01 03:31:05.387 | 2014-07-01 03:31:05.368 |   traceback (test/plain; charset="utf8")
2014-07-01 03:31:05.389 | 2014-07-01 03:31:05.369 | ======================================================================
2014-07-01 03:31:05.391 | 2014-07-01 03:31:05.371 | FAIL: process-returncode
2014-07-01 03:31:05.393 | 2014-07-01 03:31:05.374 | tags: worker-2
2014-07-01 03:31:05.395 | 2014-07-01 03:31:05.376 | ----------------------------------------------------------------------
2014-07-01 03:31:05.397 | 2014-07-01 03:31:05.378 | Binary content:
2014-07-01 03:31:05.399 | 2014-07-01 03:31:05.380 |   traceback (test/plain; charset="utf8")
2014-07-01 03:31:05.401 | 2014-07-01 03:31:05.382 | Ran 9 tests in 0.367s
2014-07-01 03:31:05.403 | 2014-07-01 03:31:05.384 | FAILED (id=0, failures=4, skips=2)
2014-07-01 03:31:05.405 | 2014-07-01 03:31:05.386 | error: testr failed (1)
2014-07-01 03:31:05.408 | 2014-07-01 03:31:05.388 | ERROR: InvocationError: '/opt/stack/new/neutron/.tox/functional/bin/python setup.py testr --slowest --testr-args='
2014-07-01 03:31:05.409 | 2014-07-01 03:31:05.390 | ___________________________________ summary ____________________________________
2014-07-01 03:31:05.411 | 2014-07-01 03:31:05.392 | ERROR:   functional: commands failed
.
.
.
----------------------------------------------------

Here's[2] the logstash query for "int() argument must be a string or a
number, not 'NoneType'"  -- looking at, 'build_name' in the logs, most
of them are 'check-neutron-dsvm-functional'


  [1] http://logs.openstack.org/90/102490/4/check/check-neutron-dsvm-functional/9db189a/console.html#_2014-07-01_03_31_05_126
  [2] http://logstash.openstack.org/#eyJzZWFyY2giOiJcInN1ZG86IG5vIHR0eSBwcmVzZW50IGFuZCBubyBhc2twYXNzIHByb2dyYW0gc3BlY2lmaWVkXCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjE3MjgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MDQxOTcwNzI1MDh9

** Affects: neutron
     Importance: Undecided
         Status: New

** Summary changed:

- neutron/agent/linux/ovs_lib.py: int(ofport) returns 'NoneType' instead of string or number
+ neutron/agent/linux/ovs_lib.py: int(ofport) returns 'NoneType' instead of string or a number

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https://bugs.launchpad.net/bugs/1336172

Title:
  neutron/agent/linux/ovs_lib.py: int(ofport) returns 'NoneType' instead
  of string or a number

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  I encountered this as part of "check-neutron-dsvm-functional" test job
  failure from Jenkins.

  Contextual log snippet (from console.html)[1]:
  ----------------------------------------------------
  .
  .
  .
  2014-07-01 03:31:05.323 | 2014-07-01 03:31:05.304 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', 'get', 'Interface', 'peertest1-e9c183', 'ofport']
  2014-07-01 03:31:05.325 | 2014-07-01 03:31:05.306 | Exit code: 1
  2014-07-01 03:31:05.327 | 2014-07-01 03:31:05.308 | Stdout: ''
  2014-07-01 03:31:05.329 | 2014-07-01 03:31:05.310 | Stderr: 'sudo: no tty present and no askpass program specified\n'
  2014-07-01 03:31:05.331 | 2014-07-01 03:31:05.312 | 2014-07-01 03:31:05,077    ERROR [neutron.agent.linux.utils] 
  2014-07-01 03:31:05.333 | 2014-07-01 03:31:05.314 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']
  2014-07-01 03:31:05.336 | 2014-07-01 03:31:05.316 | Exit code: 1
  2014-07-01 03:31:05.338 | 2014-07-01 03:31:05.319 | Stdout: ''
  2014-07-01 03:31:05.340 | 2014-07-01 03:31:05.321 | Stderr: 'sudo: no tty present and no askpass program specified\n'
  2014-07-01 03:31:05.342 | 2014-07-01 03:31:05.323 | 2014-07-01 03:31:05,078    ERROR [neutron.agent.linux.ovs_lib] Unable to execute ['ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']. Exception: 
  2014-07-01 03:31:05.345 | 2014-07-01 03:31:05.325 | Command: ['sudo', 'ovs-vsctl', '--timeout=10', '--', '--if-exists', 'del-br', 'patchtest-e9c183']
  2014-07-01 03:31:05.347 | 2014-07-01 03:31:05.328 | Exit code: 1
  2014-07-01 03:31:05.349 | 2014-07-01 03:31:05.330 | Stdout: ''
  2014-07-01 03:31:05.351 | 2014-07-01 03:31:05.332 | Stderr: 'sudo: no tty present and no askpass program specified\n'
  2014-07-01 03:31:05.353 | 2014-07-01 03:31:05.334 | }}}
  2014-07-01 03:31:05.355 | 2014-07-01 03:31:05.336 | 
  2014-07-01 03:31:05.357 | 2014-07-01 03:31:05.338 | Traceback (most recent call last):
  2014-07-01 03:31:05.359 | 2014-07-01 03:31:05.340 |   File "neutron/tests/functional/sanity/test_sanity.py", line 58, in test_ovs_patch_support_runs
  2014-07-01 03:31:05.361 | 2014-07-01 03:31:05.342 |     checks.patch_supported(self.root_helper)
  2014-07-01 03:31:05.363 | 2014-07-01 03:31:05.343 |   File "neutron/cmd/sanity/checks.py", line 35, in patch_supported
  2014-07-01 03:31:05.365 | 2014-07-01 03:31:05.346 |     port = br.add_patch_port(patch_name, peer_name)
  2014-07-01 03:31:05.367 | 2014-07-01 03:31:05.348 |   File "neutron/agent/linux/ovs_lib.py", line 275, in add_patch_port
  2014-07-01 03:31:05.369 | 2014-07-01 03:31:05.350 |     return self.get_port_ofport(local_name)
  2014-07-01 03:31:05.371 | 2014-07-01 03:31:05.352 |   File "neutron/agent/linux/ovs_lib.py", line 183, in get_port_ofport
  2014-07-01 03:31:05.373 | 2014-07-01 03:31:05.354 |     int(ofport)
  2014-07-01 03:31:05.375 | 2014-07-01 03:31:05.356 | TypeError: int() argument must be a string or a number, not 'NoneType'
  2014-07-01 03:31:05.377 | 2014-07-01 03:31:05.358 | ======================================================================
  2014-07-01 03:31:05.379 | 2014-07-01 03:31:05.360 | FAIL: process-returncode
  2014-07-01 03:31:05.381 | 2014-07-01 03:31:05.362 | tags: worker-2
  2014-07-01 03:31:05.383 | 2014-07-01 03:31:05.363 | ----------------------------------------------------------------------
  2014-07-01 03:31:05.385 | 2014-07-01 03:31:05.366 | Binary content:
  2014-07-01 03:31:05.387 | 2014-07-01 03:31:05.368 |   traceback (test/plain; charset="utf8")
  2014-07-01 03:31:05.389 | 2014-07-01 03:31:05.369 | ======================================================================
  2014-07-01 03:31:05.391 | 2014-07-01 03:31:05.371 | FAIL: process-returncode
  2014-07-01 03:31:05.393 | 2014-07-01 03:31:05.374 | tags: worker-2
  2014-07-01 03:31:05.395 | 2014-07-01 03:31:05.376 | ----------------------------------------------------------------------
  2014-07-01 03:31:05.397 | 2014-07-01 03:31:05.378 | Binary content:
  2014-07-01 03:31:05.399 | 2014-07-01 03:31:05.380 |   traceback (test/plain; charset="utf8")
  2014-07-01 03:31:05.401 | 2014-07-01 03:31:05.382 | Ran 9 tests in 0.367s
  2014-07-01 03:31:05.403 | 2014-07-01 03:31:05.384 | FAILED (id=0, failures=4, skips=2)
  2014-07-01 03:31:05.405 | 2014-07-01 03:31:05.386 | error: testr failed (1)
  2014-07-01 03:31:05.408 | 2014-07-01 03:31:05.388 | ERROR: InvocationError: '/opt/stack/new/neutron/.tox/functional/bin/python setup.py testr --slowest --testr-args='
  2014-07-01 03:31:05.409 | 2014-07-01 03:31:05.390 | ___________________________________ summary ____________________________________
  2014-07-01 03:31:05.411 | 2014-07-01 03:31:05.392 | ERROR:   functional: commands failed
  .
  .
  .
  ----------------------------------------------------

  Here's[2] the logstash query for "int() argument must be a string or a
  number, not 'NoneType'"  -- looking at, 'build_name' in the logs, most
  of them are 'check-neutron-dsvm-functional'

  
    [1] http://logs.openstack.org/90/102490/4/check/check-neutron-dsvm-functional/9db189a/console.html#_2014-07-01_03_31_05_126
    [2] http://logstash.openstack.org/#eyJzZWFyY2giOiJcInN1ZG86IG5vIHR0eSBwcmVzZW50IGFuZCBubyBhc2twYXNzIHByb2dyYW0gc3BlY2lmaWVkXCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjE3MjgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MDQxOTcwNzI1MDh9

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