BIND 10 #2614: update b10-loadzone using generic DB creation

[BIND 10 Development]

#2614: update b10-loadzone using generic DB creation
-------------------------------------+-------------------------------------
            Reporter:  jinmei        |                        Owner:
                Type:  task          |                       Status:  new
            Priority:  medium        |                    Milestone:  Next-
           Component:  loadzone      |  Sprint-Proposed
            Keywords:                |                   Resolution:
           Sensitive:  0             |                 CVSS Scoring:
         Sub-Project:  DNS           |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |  loadzone-ng
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
-------------------------------------+-------------------------------------
Description changed by jinmei:

Old description:

> When b10-loadzone tries to load a zone to a data source but the data
> source is not even yet initialized (which means, in the current
> implementation, there is no SQLite3 DB file), it relies on
> `DataSourceClient` internally performs this initialization.
>
> But such initialization should actually be removed from
> `DataSourceClient` (it's provided for compatibility, but was not
> intended to be a part of its responsibility), and its support is
> actually incomplete (see discussions in #2610).
>
> The right solution is to complete #1861, and have b10-loadzone use the
> generic data source initialization module.
>
> Maybe we shouldn't make it automatic though, and rather implement it
> as an option to b10-loadzone.

New description:

 When b10-loadzone tries to load a zone to a data source but the data
 source is not even yet initialized (which means, in the current
 implementation, there is no SQLite3 DB file), it relies on
 `DataSourceClient` internally performs this initialization.

 But such initialization should actually be removed from
 `DataSourceClient` (it's provided for compatibility, but was not
 intended to be a part of its responsibility)
 ~~and its support is actually incomplete (see discussions in #2610).~~
 (this part was my misunderstanding).

 The right solution is to complete #1861, and have b10-loadzone use the
 generic data source initialization module.

 Maybe we shouldn't make it automatic though, and rather implement it
 as an option to b10-loadzone.

--

-- 
Ticket URL: <http://bind10.isc.org/ticket/2614#comment:2>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development