Issue #20408 has been updated by Erik Dalén.
it seems to me the default should be the union merge. Seems like most of the
others would be rare cases where you would need them.
Of course the weight property of the facts should be taken into account when
merging so that higher weight values take priority over lower weight ones in
case two facts return values for the same thing.
Another way would be to allow facts to merge something at a lower level than
the top. For example:
<pre>
Facter.add(:interfaces) do
setcode do
{
:eth0 => {:ipaddress => '192.168.0.1},
:lo => {:ipaddress => '127.0.0.1'},
}
end
end
Facter add(:"interfaces::eth0") do
setcode do
{ :macaddress => '00:00:00:00:00:00' }
end
end
</pre>
In this case the macaddress would be merged into the eth0 key in the interfaces
hash. Not sure about reusing the :: notation here though :)
----------------------------------------
Feature #20408: Should be possible to merge structured facts
https://projects.puppetlabs.com/issues/20408#change-95378
* Author: Erik Dalén
* Status: Accepted
* Priority: Normal
* Assignee:
* Category:
* Target version: 2.0.0
* Keywords: structured facts hash
* Branch:
* Affected Facter version:
----------------------------------------
To be able to extend one structured fact with more data it should be possible
to deep merge two facts.
For example it there was a "interfaces" hash containing network interfaces and
info about them and you wanted to add LLDP information to them you could add
another interfaces fact that would get deep merged with the original one.
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