BIND 10 #2573: extend MasterLoader and ZoneLoader to return additional states including # of loaded RRs

[BIND 10 Development]

#2573: extend MasterLoader and ZoneLoader to return additional states including #
of loaded RRs
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                   Reporter:         |                 Owner:  UnAssigned
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  New Tasks
                   Priority:         |              Keywords:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  libdns++                           |  Estimated Difficulty:  0
               CVSS Scoring:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
  loadzone-ng                        |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 We'd like to allow b10-loadzone to report the actual number of loaded
 RRs in the end.  To implement this feature, I suggest extending
 `MasterLoader` so that the user can get the number of RRs loaded so
 far, and extending `ZoneLoader` so it can return this information
 to its user using the extension to `MasterLoader`.

 This should be an easy task, so I'd also suggest extending these two
 classes for the interface proposed in #2572.

 And I also suggest implementing Python wrapper for the added
 extensions to `ZoneLoader`.

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Ticket URL: <http://bind10.isc.org/ticket/2573>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development