Puppet users - Sep 2013 - Run a custom function through the ruby debugger

Hallo,
I''m developing a custom function that is exhibiting some odd behavior,
so I
would like to debug it.
How do I load it in the ruby shell in a way that lets me execute it?
I have tried the steps on the documentation:

irb(main):001:0> require ''puppet''
>
> => true
>
> irb(main):002:0> require ''phash2text.rb'' 
>
> => true
>
> irb(main):003:0> Puppet::Parser::Functions.function(:hash2text)
>
> => "function_hash2text"
>
> irb(main):004:0> function_hash2text
>
> NameError: undefined local variable or method `function_hash2text''
for
>> main:Object
>
> from (irb):4
>
> from  :0
>
>
But how can I actually execute the function?


Thanks,
Andrea 

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Here is how to invoke the function ''fqdn_rand(30)'' in irb

irb > require ''puppet''
irb > scope =>
Puppet::Parser::Scope.new_for_test_harness(''localhost'')
irb>> scope.function_fqnrand([30])

=> "1"

That may not work if your function requires a fully configured system.
If you need that set the breakpoint inside your function, and then 
invoke with
puppet apply - i.e. puppet apply -e ''notice fqdn_rand(30)''

A good approach is to start with an rspec test for your function, then
you can invoke that when you want to debug. Look at 
spec/unit/parser/functions/fqdn_rand_spec.rb for an example how to test 
a function.

Hope that helps
- henrik

On 2013-17-09 14:19, Andrea Ieri wrote:
> Hallo,
> I''m developing a custom function that is exhibiting some odd
behavior,
> so I would like to debug it.
> How do I load it in the ruby shell in a way that lets me execute it?
> I have tried the steps on the documentation:
>
>         irb(main):001:0> require ''puppet''
>
>         => true
>
>         irb(main):002:0> require ''phash2text.rb''
>
>         => true
>
>         irb(main):003:0> Puppet::Parser::Functions.function(:hash2text)
>
>         => "function_hash2text"
>
>         irb(main):004:0> function_hash2text
>
>         NameError: undefined local variable or method
>         `function_hash2text'' for main:Object
>
>         from (irb):4
>
>         from :0
>
>
> But how can I actually execute the function?
>
>
> Thanks,
> Andrea
>
> --
> You received this message because you are subscribed to the Google
> Groups "Puppet Users" group.
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> an email to puppet-users+unsubscribe@googlegroups.com.
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> Visit this group at http://groups.google.com/group/puppet-users.
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