[Puppet Users] Type/Provider Error: /Type[name]: Could not evaluate: No ability to determine if xxx exists

[lupindeterd]

Hi,

I'm on my first attempt of writing a custom type/provider and hope to learn 
on the process. I'm got a stumbling block and lost on what's going with 
this as I have defined the exist? method which apparently the usual suspect 
for this error.

puppet resource tsam_host 'wakwak' ip='192.168.20.1' ensure=present  
Error: /Tsam_host[wakwak]: Could not evaluate: No ability to determine if 
tsam_host exists
Error: Could not run: No ability to determine if tsam_host exists


modules/tsam/lib/puppet/provider/tsam_host/ruby.rb

Puppet::Type.type(:tsam_host).provide(:ruby) do
        header     = ':content_type => :json, :accept => :json' 
        baseurl    = 'https://xxx.xxxx@172.16.210.10'
        host_uri   = '/isam/host_records'
        deploy_uri = '/pending_changes/deploy'

        def exist?
            ip         = resource[:ip]
            begin
              response = RestClient.get  
"#{baseurl}#{host_uri}/#{ip}/hostnames",header
              exit if response.code == 200
            rescue Puppet::ExecutionFailure => e
              exit!
            end
        end

        def create 
            host       = resource[:name]
            ip         = resource[:ip]
            postdata   = '{ "addr" => ip, "hostnames" => [{ host }]}'
            RestClient.post "#{baseurl}#{host_uri}", postdata.to_json, 
header
            RestClient.get  "#{baseurl}#{deploy_uri}",header
        end

        def destroy
        end
end


/modules/tsam/lib/puppet/type$ cat tsam_host.rb 
Puppet::Type.newtype(:tsam_host) do
        desc 'Create hostname/ip mapping( hostfile ) entry on Access 
Manager Appliance Web Service API'

        ensurable

        newproperty(:ip) do
                desc 'The IPV4 address of the host to be added'
        end

        newparam(:name, :namevar => true) do
                desc 'The host name.'
        end
end


Appreciate for any pointers.
Lupin

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