passing parameters from external file (template) to puppet script - ruby

Question

Hi I'm trying to execute an exe file using puppet script. My exe file is accepting 3 parameters like param1, param2 and param3. All I want is to pass these parameters through external file. How can I do this?
Here is my sample code:
exec { "executing exe file":
command => 'copyfile.exe "DestinatoinPath" "sourcefilename" "destinationfilename" ',
}
All I want is to pass all these values from external file and use it here.
Can someone help me to resolve this
Here is my trail:
Here is my directory structure:
puppet\modules\mymodule\manifests\myfile.pp and
puppet\modules\mymodule\templates\params.erb
and my erb file is having a value of path ex: d:\test1.txt e:\test1.txt testfilename
$myparams = template("mymodule/params.erb")
exec { "executing exe file":
command => '$myparams',
}

Answer 1

EDIT:
The root of the problem was trying to call the module manifest directly, thus the template lookup failed. The solution was not to use a module and specify the full template path.
There are 2 main ways to go about it:
Declare the variables in scope
#acceptable for a throwaway manifest
$path = "DestinationPath"
$source = "sourcefilename"
$destination "destinationfilename"
exec { "executing exe file":
command => 'copyfile.exe ${path} ${source} ${destination}',
}
Wrap it in a parameterized class/defined type
# parameterized class, included only once
class executing_exe_file ($path, $source, $destination) {
exec { "executing exe file":
command => 'copyfile.exe ${path} ${source} ${destination}',
}
}
OR
# defined resource, can be repeated multiple times
define executing_exe_file ($path, $source, $destination) {
exec { "executing exe file":
command => 'copyfile.exe ${path} ${source} ${destination}',
}
}
THEN
executing_exe_file { "executing exe file":
path: "DestinationPath",
source: "sourcefilename",
destination: "destinationfilename",
}
Also as a side note, you have to make sure copyfile.exe is fully qualified.