BIND 10 #3083: Changes to allocation engine to propagate the information about the FQDNs

[BIND 10 Development]

#3083: Changes to allocation engine to propagate the information about the FQDNs
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            Reporter:  marcin        |                        Owner:
                Type:  enhancement   |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  dhcp-ddns     |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-DHCP-20130904
         Sub-Project:  DHCP          |                   Resolution:
Estimated Difficulty:  0             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by marcin):

 * owner:  marcin => UnAssigned
 * status:  assigned => reviewing


Comment:

 I added two extensions to the Allocation Engine:
 - additional pointer passed to allocateAddress4 method which is used to
 pass the instance of the old lease. Using the copy copy of the old lease
 and the new lease, the server may determine what updates to DDNS should be
 performed.
 - additional parameters which set the FQDN specific flags hostname, fwd
 and rev update flags for the allocated lease

 I also made a change to the memfile backend. With this change the backend
 returns the copy of the lease, not the lease from the container. That way,
 the modification on the returned lease instance does not modify the lease
 in the lease container. Also implemented updateLease4 and updateLease6 to
 allow updates of the lease in the data base.

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Ticket URL: <http://bind10.isc.org/ticket/3083#comment:4>
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