Help: instantiating parsedfile in another type ( help with populating the record object )

[Manish Chakravarty]

Hello,

I want to instantiate parsedfile in a provider that I am writing [1] and then use that instance to manage my config file.

I cannot inherit from parsedfile as I am already inheriting from base.rb

I want to write a method like 

    def write_something_to_file

       # use parsedfile here to do the actual writing

To investigate further, I decided to run instantiate a parsedfile object in irb:

Here's the trace:

manish@freedom ~ % irb

>> require 'Puppet'

/Library/Ruby/Site/1.8/Puppet.rb:28: warning: already initialized constant PUPPETVERSION

=> true

>> require 'Puppet/Provider'

=> []

>> require 'Puppet/Provider/ParsedFile'

=> []

>> pf = Puppet::Provider::ParsedFile.new

ArgumentError: wrong number of arguments (0 for 1)

from (irb):7:in `initialize'

from (irb):7:in `new'

from (irb):7

>> pf = Puppet::Provider::ParsedFile.new(record)

(record)

The "initialize" method in parsedfile.rb says:

    def initialize(record)

        super

<snipped documentation>

        if @property_hash.empty?

            @property_hash = self.class.record?(resource[:name]) || {:record_type => self.class.name, :ensure => :absent}

        end

    end

Can someone please guide me as to how to populate the property hash and record objects so that I can play around with parsedfile ?

[1] = http://groups.google.com/group/puppet-dev/browse_thread/thread/74958e44d747052f

--
Manish Chakravarty
http://manish-chaks.livejournal.com/

[Luke Kanies]

On May 16, 2009, at 9:30 AM, Manish Chakravarty wrote:

> Hello,
>
> I want to instantiate parsedfile in a provider that I am writing [1]
> and then use that instance to manage my config file.
> I cannot inherit from parsedfile as I am already inheriting from
> base.rb

I think I mentioned that this probably isn't the right answer, but
I'll help you continue with your experiment and see where it gets you.
I *do* recommend you look at resource generation over this, though.

ParsedFile instances (and maybe all providers?) require either a
resource instance or a hash at initialization. If you provide a hash,
then this is considered to be the current state of the resource on
disk. You still need to use the settors to change the state.

This is a bit the flaw of using a provider directly - you have to
handle the transactional bits yourself.

--
Ours is the age that is proud of machines that think and suspicious of
men who try to. -- H. Mumford Jones
---------------------------------------------------------------------
Luke Kanies | http://reductivelabs.com | http://madstop.com