BIND 10 #2274: Implement counters into Xfrin (2/3)

[BIND 10 Development]

#2274: Implement counters into Xfrin (2/3)
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            Reporter:  naokikambe    |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  medium        |                    Milestone:  New
           Component:  xfrin         |  Tasks
           Sensitive:  0             |                     Keywords:
         Sub-Project:  DNS           |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 According to StatisticsItems, implement the following statistics items to
 Xfrin in the same way as #2252.

 ||'''Module'''||'''Item'''||'''in BIND 9 Statistics XML (tree
 representation under isc/bind/statistics)'''||'''Description from BIND 9
 Manual'''||'''Implemented in BIND 10?'''||
 ||Xfrin|| || || || ||
 || ||xfrin.ixfr_running||(shown in 'rndc status': xfers running)||Number
 of IXFRs in progress||no||
 || ||xfrin.axfr_running||(shown in 'rndc status': xfers running)||Number
 of AXFRs in progress||no||
 || ||xfrin.ixfr_deferred||(shown in 'rndc status': xfers deferred)||Number
 of deferred IXFRs||no||
 || ||xfrin.axfr_deferred||(shown in 'rndc status': xfers deferred)||Number
 of deferred AXFRs||no||
 || ||xfrin.soa_in_progress||(shown in 'rndc status': SOA queries in
 progress)||Number of SOA queries in progress||no||

 The class !XfrinConnection in Xfrin should be revised for counting  the
 above items. Besides the counter class !XfroutCounter should be revised
 for adding these items. The related unittest and the lettuce test should
 be also revised. This ticket depends on #2252 because the same statistics
 library can be used.

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Ticket URL: <http://bind10.isc.org/ticket/2274>
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