[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Thierry Carrez]

** Changed in: neutron
Milestone: liberty-rc2 => 7.0.0

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Title:
  Metadata proxy process errors with binary user_data

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

Reviewed:  https://review.openstack.org/233136
Committed: 
https://git.openstack.org/cgit/openstack/neutron/commit/?id=118a76fd651c19ad098cdee9d0a122a00ddc4e3b
Submitter: Jenkins
Branch:stable/kilo

commit 118a76fd651c19ad098cdee9d0a122a00ddc4e3b
Author: Ihar Hrachyshka 
Date:   Thu Oct 1 17:13:25 2015 +0200

metadata: don't crash proxy on non-unicode user data

We attempt to log every successful metadata response with LOG.debug. But
as per oslo.log docs [1], we should make sure that what we pass into the
library is unicode.

Http.request returns a tuple of Response object and a string, which is
bytes in Python 2.x [2].

That's why we need to convert the response content to unicode before
passing it into oslo.log.

To achieve it, we utilize encodeutils.safe_decode with 'replace' errors
handling strategy, so that we don't get exceptions on input that does
not conform unicode.

For the unit test case, we pass a string that is not expected to convert
to unicode with errors='strict' strategy or similar, and check that we
still don't crash.

While at it, we remove a check for the number of log calls being
triggered, because it's something that we should avoid validating in
test cases, and it cannot trigger a real bug. The mock that was used to
count the number would also hide the bug that we try to reproduce.

Note that the bug does not require debug to be set because the crash
occurs before oslo.log machinery decides it should not log the message.

[1]: 
http://docs.openstack.org/developer/oslo.log/usage.html#no-more-implicit-conversion-to-unicode-str
[2]: 
http://bitworking.org/projects/httplib2/doc/html/libhttplib2.html#httplib2.Http.request

Conflicts:
neutron/agent/metadata/namespace_proxy.py
neutron/tests/unit/agent/metadata/test_namespace_proxy.py

Closes-Bug: #1501772
Change-Id: I6a32c40ff117fae43913386134c8981539697ce8
(cherry picked from commit 80e3d9be4923ecad17377b1d15c8392b8a43dac6)


** Tags added: in-stable-kilo

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Ihar Hrachyshka]

oslo.log was not used in Juno, so not affected.

** Tags removed: juno-backport-potential

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Ihar Hrachyshka]

** Tags removed: liberty-rc-potential
** Tags added: juno-backport-potential kilo-backport-potential

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Thierry Carrez]

** Changed in: neutron
   Status: Fix Committed => Fix Released

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Launchpad Bug Tracker]

This bug was fixed in the package neutron - 2:7.0.0~rc1-0ubuntu4

---
neutron (2:7.0.0~rc1-0ubuntu4) wily; urgency=medium

  * Drop hard requirement on python-ryu for this cycle as it supports
a new alternative agent implementation for Open vSwitch and is not
the default, avoiding inclusion of ryu in main for Wily.
- d/control: Drop (Build-)Depends on ryu, add Suggests.
- d/p/drop-ryu-dep.patch: Patch out hard requirement on ryu.

 -- James Page   Fri, 02 Oct 2015 18:10:49 +0100

** Changed in: neutron (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/wily-proposed/neutron

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[James Page]

** Changed in: neutron (Ubuntu)
 Assignee: (unassigned) => James Page (james-page)

** Changed in: neutron (Ubuntu)
   Importance: Undecided => High

** Changed in: neutron (Ubuntu)
   Status: New => In Progress

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Kyle Mestery]

** Changed in: neutron/liberty
   Importance: Undecided => High

** Changed in: neutron/liberty
Milestone: None => liberty-rc2

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Kyle Mestery]

** Also affects: neutron/liberty
   Importance: Undecided
   Status: New

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Thierry Carrez]

** Changed in: neutron
Milestone: mitaka-1 => liberty-rc2

** No longer affects: neutron/liberty

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/230513

** Changed in: neutron/liberty
   Status: New => In Progress

** Changed in: neutron/liberty
 Assignee: (unassigned) => Kyle Mestery (mestery)

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

Reviewed:  https://review.openstack.org/230513
Committed: 
https://git.openstack.org/cgit/openstack/neutron/commit/?id=13b6d76da361178ea0b84baf4831a4c7f53e29c7
Submitter: Jenkins
Branch:stable/liberty

commit 13b6d76da361178ea0b84baf4831a4c7f53e29c7
Author: Ihar Hrachyshka 
Date:   Thu Oct 1 17:13:25 2015 +0200

metadata: don't crash proxy on non-unicode user data

We attempt to log every successful metadata response with LOG.debug. But
as per oslo.log docs [1], we should make sure that what we pass into the
library is unicode.

Http.request returns a tuple of Response object and a string, which is
bytes in Python 2.x [2].

That's why we need to convert the response content to unicode before
passing it into oslo.log.

To achieve it, we utilize encodeutils.safe_decode with 'replace' errors
handling strategy, so that we don't get exceptions on input that does
not conform unicode.

For the unit test case, we pass a string that is not expected to convert
to unicode with errors='strict' strategy or similar, and check that we
still don't crash.

While at it, we remove a check for the number of log calls being
triggered, because it's something that we should avoid validating in
test cases, and it cannot trigger a real bug. The mock that was used to
count the number would also hide the bug that we try to reproduce.

Note that the bug does not require debug to be set because the crash
occurs before oslo.log machinery decides it should not log the message.

[1]: 
http://docs.openstack.org/developer/oslo.log/usage.html#no-more-implicit-conversion-to-unicode-str
[2]: 
http://bitworking.org/projects/httplib2/doc/html/libhttplib2.html#httplib2.Http.request

Closes-Bug: #1501772
Change-Id: I6a32c40ff117fae43913386134c8981539697ce8
(cherry picked from commit 80e3d9be4923ecad17377b1d15c8392b8a43dac6)


** Tags added: in-stable-liberty

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[James Page]

I'm just re-deploying the environment where I saw this issue - some
other bug reports for this error code would indicate that maybe the
unicode package is not installed.

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[James Page]

Installing random unicode packages did not help.

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Ihar Hrachyshka]

I have a test case to reproduce it.

** Changed in: neutron
   Status: New => Confirmed

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Ihar Hrachyshka]

** Changed in: neutron
 Assignee: (unassigned) => Ihar Hrachyshka (ihar-hrachyshka)

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Kyle Mestery]

** Tags added: liberty-rc-potential

** Changed in: neutron
   Importance: Undecided => High

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

Fix proposed to branch: master
Review: https://review.openstack.org/229958

** Changed in: neutron
   Status: Confirmed => In Progress

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[James Page]

Kyle

Patch works OK for me.

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Kyle Mestery]

James, any chance you can try the patch here [1] to see if it fixes the
issue? Thanks to Ihar for the quick turnaround!

[1] https://review.openstack.org/#/c/229958/

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[Armando Migliaccio]

** Changed in: neutron
Milestone: None => mitaka-1

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

** Changed in: neutron
 Assignee: Ihar Hrachyshka (ihar-hrachyshka) => Cedric Brandily (cbrandily)

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

** Changed in: neutron
 Assignee: Cedric Brandily (cbrandily) => Henry Gessau (gessau)

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[Bug 1501772] Re: Metadata proxy process errors with binary user_data

[OpenStack Infra]

Reviewed:  https://review.openstack.org/229958
Committed: 
https://git.openstack.org/cgit/openstack/neutron/commit/?id=80e3d9be4923ecad17377b1d15c8392b8a43dac6
Submitter: Jenkins
Branch:master

commit 80e3d9be4923ecad17377b1d15c8392b8a43dac6
Author: Ihar Hrachyshka 
Date:   Thu Oct 1 17:13:25 2015 +0200

metadata: don't crash proxy on non-unicode user data

We attempt to log every successful metadata response with LOG.debug. But
as per oslo.log docs [1], we should make sure that what we pass into the
library is unicode.

Http.request returns a tuple of Response object and a string, which is
bytes in Python 2.x [2].

That's why we need to convert the response content to unicode before
passing it into oslo.log.

To achieve it, we utilize encodeutils.safe_decode with 'replace' errors
handling strategy, so that we don't get exceptions on input that does
not conform unicode.

For the unit test case, we pass a string that is not expected to convert
to unicode with errors='strict' strategy or similar, and check that we
still don't crash.

While at it, we remove a check for the number of log calls being
triggered, because it's something that we should avoid validating in
test cases, and it cannot trigger a real bug. The mock that was used to
count the number would also hide the bug that we try to reproduce.

Note that the bug does not require debug to be set because the crash
occurs before oslo.log machinery decides it should not log the message.

[1]: 
http://docs.openstack.org/developer/oslo.log/usage.html#no-more-implicit-conversion-to-unicode-str
[2]: 
http://bitworking.org/projects/httplib2/doc/html/libhttplib2.html#httplib2.Http.request

Closes-Bug: #1501772
Change-Id: I6a32c40ff117fae43913386134c8981539697ce8


** Changed in: neutron
   Status: In Progress => Fix Committed

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