BIND 10 #1393: reduce overhead in python logging

[BIND 10 Development]

#1393: reduce overhead in python logging
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            Reporter:  jinmei        |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  major         |                    Milestone:  Next-
           Component:  logging       |  Sprint-Proposed
           Sensitive:  0             |                     Keywords:
         Sub-Project:  Core          |              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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 See this: https://bind10.isc.org/ticket/1359#comment:11

 On a related note, it would be better to pass the original object
 to logger rather than passing a string based on the object whenever
 possible.  Then we can avoid the expensive conversion if the specified
 level of logging is disabled.

 Example: do this
 {{{
     isc.dns.Name name('example.com')
     logger.debug(VERY_MINOR, SOME_NOISY_LOG, name)
 }}}
 instead of
 {{{
     isc.dns.Name name('example.com')
     logger.debug(VERY_MINOR, SOME_NOISY_LOG, name.to_text())
 }}}

 Another related note is that we should generally try to provide __str__()
 for Python classes defined in BIND 10.

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Ticket URL: <http://bind10.isc.org/ticket/1393>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development