logstash/logstash — pull request #411 by shadyabhi (2013-03-20 19:11:10+00:00)
Title: Add an option to selectively parse fields in kv filter

For ex, if I want to parse only parse key value pairs like "from=abc" or "to=
" and exclude all other paris like "foo-bar".

I can do something like:

kv {
catchall => false
include_fields => ['from', 'to']
}