[Puppet Users] boolean like operation for puppetdb query

['Matt Zagrabelny' via Puppet Users]

Greetings,

I have a puppetdb installation that I leverage by querying from my 
manifests.

I'd like to have a boolean-like operation for puppetdb that pretty much 
tests if the current node has a given class as part of the catalog. Here is 
my current code:

        $query = [ 
            'resources[certname] {',
            'type = "Class"',
            'and',
            "title = \"fail2ban\"",
            'and',
            "certname = \"${trusted['certname']}\"",
            '}',
        ]
        $this_host_has_fail2ban = puppetdb_query(
            $query.join(' ')
        ).map |$entity| {
            $entity["certname"]
        }

        if "${trusted['certname']}" in $this_host_has_fail2ban {
            $shall_allow_from_internet = true
        }
        else {
            $shall_allow_from_internet = false
        }

Is there a simpler mechanism to find out if a node has a given class in its 
catalog?

Thanks for any help!

-m

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