BIND 10 #2179: Update Stats to support partial statistics updates

[BIND 10 Development]

#2179: Update Stats to support partial statistics updates
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                   Reporter:         |                 Owner:  naokikambe
  naokikambe                         |                Status:  reviewing
                       Type:         |             Milestone:
  enhancement                        |  Sprint-20120904
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  statistics                         |  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 naokikambe):

 Replying to [comment:13 jelte]:
 > the thing i was worried about for lists is that if you have for instance
 > [ 1, 2, 3, 4, 5 ]
 > And you only want to update the last three, you cannot do it
 > So I guess in practice lists will probably always be sent completely (or
 until we have a standardized json-diff representation)
 That's right, we cannot do that by using `merge_old_new()` if we update
 only the last three values.

 For supporting updates of that type, for example, the following
 representation can be used:
 {{{#!python
 {
    'foo[2]' : 1,
    'foo[3]' : 2,
    'foo[4]' : 3
 }
 }}}
 Here, the above array is assumed to be assigned to the variable ''foo'' on
 a spec file. It internally does `isc.cc.data.set()` for each element of
 the above dictionary instead of doing `stats.merge_oldnew()`.

 > Ok on the other points, this can be merged (assuming all its
 dependencies are)

 Thank you for reviewing! I will merge later.

-- 
Ticket URL: <http://bind10.isc.org/ticket/2179#comment:14>
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