BIND 10 #2252: Implement counters into Xfrin (1/3)

[BIND 10 Development]

#2252: Implement counters into Xfrin (1/3)
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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 Xfrout.

 ||'''Module'''||'''Item'''||'''in BIND 9 Statistics XML (tree
 representation under isc/bind/statistics)'''||'''Description from BIND 9
 Manual'''||'''Implemented in BIND 10?'''||
 ||Xfrin|| || || || ||
 || ||xfrin.[zonename].soaoutv4||server/zsstat/SOAOutv4||Number of IPv4 SOA
 queries sent from Xfrin||no||
 || ||xfrin.[zonename].soaoutv6||server/zsstat/SOAOutv6||Number of IPv6 SOA
 queries sent from Xfrin||no||
 || ||xfrin.[zonename].axfrreqv4||server/zsstat/AXFRReqv4||Number if IPv4
 AXFR requests sent from Xfrin||no||
 || ||xfrin.[zonename].axfrreqv6||server/zsstat/AXFRReqv6||Number if IPv6
 AXFR requests sent from Xfrin||no||
 || ||xfrin.[zonename].ixfrreqv4||server/zsstat/IXFRReqv4||Number if IPv4
 IXFR requests sent from Xfrin||no||
 || ||xfrin.[zonename].ixfrreqv6||server/zsstat/IXFRReqv6||Number if IPv6
 IXFR requests sent from Xfrin||no||
 || ||xfrin.[zonename].xfrsuccess||server/zsstat/XfrSuccess||Number of zone
 transfer requests succeeded||no||
 || ||xfrin.[zonename].xfrfail||server/zsstat/XfrFail||Number of zone
 transfer requests failed||no||
 || ||xfrin.[zonename].time_to_ixfr||(none)||Elapsed time of the last
 IXFR||no||
 || ||xfrin.[zonename].time_to_axfr||(none)||Elapsed time of the last
 AXFR||no||

 The class !XfrinConnection in Xfrin should be revised for counting  the
 above items. Besides a counter class for Xfrin should be introduced by the
 same way as !XfroutCounter. The related unittest and the lettuce test
 should be also revised. This ticket depends on #2225 because the same
 statistics library as Xfrout can be used.

 Most of per-zone items for Xfrin are in the above list. Regarding the rest
 of per-zone items it isn't clear whether something like notifyinv4,
 notifyrej, time_to_reload, etc. can be collected by Xfrin. Regarding
 notifyinv4 current Xfrin doesn't seem to handle an incoming notifier.

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Ticket URL: <http://bind10.isc.org/ticket/2252>
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