Yes, I know. And that's how I'm using it :-)
I'm just mentioning the wording on the documentation webpage. It states
"less then or equal" instead of "bigger than or equal".
On 02/02/2021 20:38, David Lang wrote:
it should be the largest index that is less than or equal to the key
you are looking up.
The use case in mind for this feature was the maxmind GeoIP database,
which converts the IP addresses into 32bit integers and lists the
first IP of each block
so when you lookup an IP address, convert it to a 32 bit integer and
then you want the largest item that's not larger than what you are
looking up.
David Lang
On Tue, 2 Feb 2021, Mariusz Kruk via rsyslog wrote:
Date: Tue, 2 Feb 2021 14:21:55 +0100
From: Mariusz Kruk via rsyslog <[email protected]>
To: [email protected]
Cc: Mariusz Kruk <[email protected]>
Subject: [rsyslog] sparseArray documentation
Hi.
I'm reading
https://www.rsyslog.com/doc/master/configuration/lookup_tables.html
and I believe there's some mistake with wording regarding sparse arrays.
Quoting: "*Match criterion*: A match happens on the first index that
is less than or equal to the looked-up key."
If it were so, if I started my table on index=0, every single match
should happen on this value since it's obviously less than or equal
to any looked-up integer. So, judging from the example (and from what
I'd expect it to be) it's rather that match happens on the first
index that is bigger than or equal, not less than or equal.
And, for the sake of completness, it would be great to include info
that sparseArray should also consist of monotonic indexes. I assume
that the author assumed "inheritance" from previous paragraph
describing normal array.
Best regards,
MK
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