BIND 10 #2022: DDNS improvement: destroy transaction within handle()

[BIND 10 Development]

#2022: DDNS improvement: destroy transaction within handle()
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            Reporter:  jelte         |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  medium        |                    Milestone:  New
           Component:  Unclassified  |  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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 Current, in the DDNS Session class, after _create_diff() is called within
 handle(), the DDNS Session has a ongoing transaction until it it either
 completed or the session itself is destroyed. This should not prove much
 of a problem, since we are not expecting to keep these objects around, but
 it would be cleaner if the transaction was only valid within the handle()
 call.

 Best approach is probably to use the Context interface and a with
 statement.

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Ticket URL: <http://bind10.isc.org/ticket/2022>
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