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<p class="MsoNormal">Hi Folks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I could do with some pointers on config value deprecation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All of the examples in the code and documentation seem to deal with the case of “old_opt” being replaced by “new_opt” but still returning the same value<o:p></o:p></p>
<p class="MsoNormal">Here using deprecated_name and / or deprecated_opts in the definition of “new_opt” lets me still get the value (and log a warning) if the config still uses “old_opt”
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However my use case is different because while I want deprecate old-opt, new_opt doesn’t take the same value and I need to different things depending on which is specified, i.e. If old_opt is specified and new_opt isn’t I still want to
do some processing specific to old_opt and log a deprecation warning.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Clearly I can code this up as a special case at the point where I look for the options – but I was wondering if there is some clever magic in oslo.config that lets me declare this as part of the option definition ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As a second point, I thought that using a deprecated option automatically logged a warning, but in the latest Devstack wait_soft_reboot_seconds is defined as:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> cfg.IntOpt('wait_soft_reboot_seconds',<o:p></o:p></p>
<p class="MsoNormal"> default=120,<o:p></o:p></p>
<p class="MsoNormal"> help='Number of seconds to wait for instance to shut down after'<o:p></o:p></p>
<p class="MsoNormal"> ' soft reboot request is made. We fall back to hard reboot'<o:p></o:p></p>
<p class="MsoNormal"> ' if instance does not shutdown within this window.',<o:p></o:p></p>
<p class="MsoNormal"> deprecated_name='libvirt_wait_soft_reboot_seconds',<o:p></o:p></p>
<p class="MsoNormal"> deprecated_group='DEFAULT'),<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">but if I include the following in nova.conf <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> libvirt_wait_soft_reboot_seconds = 20<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can see the new value of 20 being used, but there is no warning logged that I’m using a deprecated name ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Phil<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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