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[Takashi NATSUME <natsume.takashi@xxxxxxxxxxxxx>]

** Also affects: congress
   Importance: Undecided
       Status: New

** Changed in: congress
     Assignee: (unassigned) => Takashi NATSUME (natsume-takashi)

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https://bugs.launchpad.net/bugs/1596829

Title:
  String interpolation should be delayed at logging calls

Status in Ceilometer:
  New
Status in congress:
  In Progress
Status in Glance:
  In Progress
Status in glance_store:
  New
Status in heat:
  New
Status in Ironic:
  Fix Released
Status in masakari:
  In Progress
Status in Murano:
  Fix Released
Status in networking-vsphere:
  Fix Released
Status in neutron:
  Fix Released
Status in OpenStack Compute (nova):
  In Progress
Status in os-brick:
  Fix Released
Status in os-vif:
  Fix Released
Status in python-cinderclient:
  Fix Released
Status in python-glanceclient:
  Fix Released
Status in python-neutronclient:
  Fix Released
Status in OpenStack Object Storage (swift):
  New
Status in taskflow:
  New

Bug description:
  String interpolation should be delayed to be handled by the logging
  code, rather than being done at the point of the logging call.

  Wrong: LOG.debug('Example: %s' % 'bad')
  Right: LOG.debug('Example: %s', 'good')

  See the following guideline.

  * http://docs.openstack.org/developer/oslo.i18n/guidelines.html
  #adding-variables-to-log-messages

  The rule for it should be added to hacking checks.

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