BIND 10 #2157: Create an interface to pass statistics counters in Auth module

[BIND 10 Development]

#2157: Create an interface to pass statistics counters in Auth module
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                   Reporter:         |                 Owner:  jinmei
  y-aharen                           |                Status:  reviewing
                       Type:         |             Milestone:
  enhancement                        |  Sprint-20120904
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  b10-auth                           |  Estimated Difficulty:  8
                   Keywords:         |           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:9 y-aharen]:

 > > I've read some part of the branch, but I now think it's better to
 > > review this stuff after #2154 is completed (or at least after we are
 > > sure what to do with it).
 > >
 > > Here are some intermediate comments, which may or may not matter
 > > depending on the #2154 discussion:
 > Thank you for your comment. Please make this ticket unassigned if it is
 inappropriate to reassign review to you at this time.
 [...]
 > For improving performance and readability, I modified Counters::inc() to
 use lookup table for converting from protocol code to counter item. (git
 6760e04)

 I'm willing to review the branch, but let's resolve the design level
 discussions along with #2154:

 - how to represent code-parameterized counters, such as per-type,
   per-opcode, and per-rcode counters
 - whether to use the intermediate attribute structure

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Ticket URL: <http://bind10.isc.org/ticket/2157#comment:10>
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