On Thu, Mar 7, 2013 at 8:47 AM, <damian.folw...@gmail.com> wrote:
>
> Hi,
>
> I'm very new to Ruby, and pretty new to Puppet so apologies if this is a
> bit Puppet custom type development 101.
>
> We currently have a whole bunch of Windows services that are written in
> .Net. They are really simple and so we don't bother creating MSI installs
> for them and just use InstallUtil.exe called from a script.
> I'm looking at creating a simple Puppet type and provider that will allow
> me to install the service (via InstallUtil) if it doesn't already exist (as
> opposed to using an exec resource in which it is hard to determine if the
> service exists as a conditional).
>
> Now, there are many different flavours of .Net in use, and some are 32bit,
> some 64 bit. This means that I need to be able to specify what version of
> installutil.exe to use.
> Currently the type has a bunch of parameters (not properties) to specify
> this. E.g.
> dotnetwinservice {'MyService':
> ensure => present,
> dotnetversion => '4.0.30319',
> sixtyfourbit => false,
> path => 'c:\program files(x86)\myapp\myapp.exe',
> }
>
> My question is, in the provider code what is the best way to dynamically
> determine the installutil path? All of the examples i can find setting a
> command are not dynamic (i.e. the full command path is known without
> looking at parameter values).
>
> My provider code looks like the below...
> The INSTALLUTIL value is currently hard coded. I'd like to do something
> like the commented out code but it doesn't appear as though either
> @property_hash or @resource have values at the time of execution (I get
> undefined method [] for nil:nilClass error).
>
> Puppet::Type.type(:dotnetwinservice).provide(:dotnetwinservice) do
> desc "DotNet Windows Service"
>
> confine :operatingsystem => :windows
> defaultfor :operatingsystem => :windows
>
> #dotnetframeworkversion = @resource[:sixtyfourbit] ? 'Framework64' :
> 'Framework'
> #installutilpath =
> "#{ENV['SYSTEMROOT']}\\Microsoft.NET\\Framework\\#{@resource[:dotnetversion]}\\InstallUtil.exe"
>
> #INSTALLUTIL =
> # if File.exists?(installutilpath)
> # installutilpath
> # else
> # raise Puppet::Error.new("Cannot find installutil.exe for
> dotnetversion #{@property_hash[:dotnetversion]} at #{installutilpath} " )
> # end
>
> INSTALLUTIL =
> "#{ENV['SYSTEMROOT']}\\Microsoft.NET\\Framework\\v4.0.30319\\InstallUtil.exe"
>
> commands :installutil => INSTALLUTIL
>
>
> def create
> installutil("/unattended", @resource[:path])
> end
>
> def destroy
> installutil("/u", "/unattended", @resource[:path])
> end
>
> def exists?
> Win32::Service.exists?( @resource[:name] )
> end
>
> end
See example here, you should be able to do something similar:
https://github.com/puppetlabs/puppetlabs-dism/blob/master/lib/puppet/provider/dism/dism.rb#L7-L13
HTH,
Nan
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