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
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