[pkg/ottl] Add function to check if IP belongs to given CIDR

[byehn]

Component(s)

pkg/ottl

Is your feature request related to a problem? Please describe.

It seems that OTTL currently does not provide a function to check whether an IP address falls within a specific IP range. As a workaround, we have to rely on functions like IsMatch.

Describe the solution you'd like

The IsInCIDR function checks whether a given IPv4 or IPv6 address belongs to one or more IP ranges defined in CIDR notation, and returns a boolean value.

IsInCIDR(resource.attributes["server.ip"], ["192.168.0.0/16"])
IsInCIDR(resource.attributes["server.ip"], ["192.168.0.0/16", "10.0.0.0/8"])
IsInCIDR(resource.attributes["server.ip"], ["2001:db8::/32"])

Describe alternatives you've considered

No response

Additional context

No response

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[github-actions]

Pinging code owners:

• pkg/ottl: @TylerHelmuth @evan-bradley @edmocosta

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[edmocosta]

I think it would a be an useful function, not only for transforming, but also for filtering and routing data based on networks. I support it.

[github-actions]

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Pinging code owners:

• pkg/ottl: @TylerHelmuth @evan-bradley @edmocosta @bogdandrutu

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