BIND 10 #2225: Implement counters into Xfrout (3/3)

[BIND 10 Development]

#2225: Implement counters into Xfrout (3/3)
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            Reporter:  naokikambe    |                        Owner:
                Type:  enhancement   |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  xfrout        |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20121204
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  7             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by jinmei):

 Replying to [comment:23 naokikambe]:
 > Replying to [comment:22 jinmei]:
 > OK, I understand your opinion. So do you have another idea? For example,
 can xfrout directly update a map-type counter as the following? Is this
 reasonable for you?
 > {{{#!python
 > Counter.statistics['zones'][zone_name]['xfrreqdone'] += 1
 > }}}

 The `Counter` part still seems to indicate singleton.  Conceptually,
 what I'd envision is this:

 {{{#!python
     xfrout_counter = some_factory_method_or_something()
     xfrout_counter.inc('zones', zone_name, 'xfrreqdone')
 }}}
 (Note that this is conceptual example.  We can consider syntax sugar
 to improve readability as long as the essential property is preserved)

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Ticket URL: <http://bind10.isc.org/ticket/2225#comment:24>
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