Here what oslo.config documentation says. Represents a Deprecated option. Here's how you can use it
oldopts = [cfg.DeprecatedOpt('oldfoo', group='oldgroup'), cfg.DeprecatedOpt('oldfoo2', group='oldgroup2')] cfg.CONF.register_group(cfg.OptGroup('blaa')) cfg.CONF.register_opt(cfg.StrOpt('foo', deprecated_opts=oldopts), group='blaa') Multi-value options will return all new and deprecated options. For single options, if the new option is present ("[blaa]/foo" above) it will override any deprecated options present. If the new option is not present and multiple deprecated options are present, the option corresponding to the first element of deprecated_opts will be chosen. I hope that it'll help you. Best regards, Denis Makogon. On Wed, Feb 26, 2014 at 4:17 PM, Day, Phil <philip....@hp.com> wrote: > Hi Folks, > > > > I could do with some pointers on config value deprecation. > > > > 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 > > 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" > > > > 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. > > > > 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 ? > > > > > > > > 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: > > > > cfg.IntOpt('wait_soft_reboot_seconds', > > default=120, > > help='Number of seconds to wait for instance to shut down > after' > > ' soft reboot request is made. We fall back to hard > reboot' > > ' if instance does not shutdown within this window.', > > deprecated_name='libvirt_wait_soft_reboot_seconds', > > deprecated_group='DEFAULT'), > > > > > > > > but if I include the following in nova.conf > > > > libvirt_wait_soft_reboot_seconds = 20 > > > > > > I can see the new value of 20 being used, but there is no warning logged > that I'm using a deprecated name ? > > > > Thanks > > Phil > > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
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