BIND 10 #2943: extensions to ZoneTableSegment and complete ConfigurableClientList::getStatus

[BIND 10 Development]

#2943: extensions to ZoneTableSegment and complete
ConfigurableClientList::getStatus
-------------------------------------+-------------------------------------
                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  Next-Sprint-
                   Priority:         |  Proposed
  medium                             |              Keywords:
                  Component:  data   |             Sensitive:  0
  source                             |           Sub-Project:  DNS
               CVSS Scoring:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  shared memory data source          |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
-------------------------------------+-------------------------------------
 We need to complete the "TODO" part of
 `ConfigurableClientList::getStatus`:
 {{{#!cpp
     vector<DataSourceStatus> result;
     BOOST_FOREACH(const DataSourceInfo& info, data_sources_) {
         // TODO: Once we support mapped cache, decide when we need the
         // SEGMENT_WAITING.
         result.push_back(DataSourceStatus(info.name_, info.cache_ ?
                                           SEGMENT_INUSE : SEGMENT_UNUSED,
                                           "local"));
     }
     return (result);
 }}}

 To do so, we need two small extensions to the `ZoneTableSegment`
 class:

 {{{#!cpp
 class ZoneTableSegment {
 public:
     /// ZoneTableSegmentLocal returns "local"; ZoneTableSegmentMapped
 returns
     /// "mapped"
     virtual std::string getStringType() const = 0;

     /// ZoneTableSegmentLocal always returns true; ZoneTableSegmentMapped
     /// returns true iff the memory segment has been set by reset().
     virtual bool isUsable() const = 0;
 };
 }}}

 In this task, we implement these extensions (base class, local and
 mapped) and complete getStatus() using these methods.

-- 
Ticket URL: <http://bind10.isc.org/ticket/2943>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development