自定义木偶提供程序：如何从木偶主文件中检索文件

Question

I need to retrieve a static file from within a custom Puppet provider from Puppet master (just like file built-in resource does). Defining a separate built-in file resource in Puppet code is not an option. So, in Puppet code the thing should look like this:

custom_type{
  property1 => 'value1'
  property2 => 'value2'
  file => "puppet:///${module_name}/somefile"
}

Although I've written custom types and providers before, interaction with Puppet master's file server is something I do not get.

Answer 1

I suggest using the file type after all. You need not do this from the manifest level. Puppet can handle this using generated resources .

For example, the nagios types do something similar.

In your custom type code, introduce a generate hook.

def generate
  if self[:file]
    Puppet::Type.type(:file).new({
      :name   => <whatever the path on the agent is>,
      :ensure => :present,
      :source => self[:file],
    })
  end
end

The agent takes care of adding this resource to the catalog.

Answer 2

Looking into the puppet file type , it looks like this is what you want on line 103:

 Puppet::FileServing::Content.indirection.find(metadata.source, :environment => resource.catalog.environment_instance, :links => resource[:links]) 

metadata.source is the path to the file.