| Current Path : /usr/share/ruby/vendor_ruby/hiera/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/ruby/vendor_ruby/hiera/interpolate.rb |
require 'hiera/backend'
require 'hiera/recursive_guard'
class Hiera::Interpolate
class << self
INTERPOLATION = /%\{([^\}]*)\}/
METHOD_INTERPOLATION = /%\{(scope|hiera)\(['"]([^"']*)["']\)\}/
def interpolate(data, scope, extra_data)
if data.is_a?(String)
# Wrapping do_interpolation in a gsub block ensures we process
# each interpolation site in isolation using separate recursion guards.
data.gsub(INTERPOLATION) do |match|
do_interpolation(match, Hiera::RecursiveGuard.new, scope, extra_data)
end
else
data
end
end
def do_interpolation(data, recurse_guard, scope, extra_data)
if data.is_a?(String) && (match = data.match(INTERPOLATION))
interpolation_variable = match[1]
recurse_guard.check(interpolation_variable) do
interpolate_method, key = get_interpolation_method_and_key(data)
interpolated_data = send(interpolate_method, data, key, scope, extra_data)
do_interpolation(interpolated_data, recurse_guard, scope, extra_data)
end
else
data
end
end
private :do_interpolation
def get_interpolation_method_and_key(data)
if (match = data.match(METHOD_INTERPOLATION))
case match[1]
when 'hiera' then [:hiera_interpolate, match[2]]
when 'scope' then [:scope_interpolate, match[2]]
end
elsif (match = data.match(INTERPOLATION))
[:scope_interpolate, match[1]]
end
end
private :get_interpolation_method_and_key
def scope_interpolate(data, key, scope, extra_data)
value = scope[key]
if value.nil? || value == :undefined
value = extra_data[key]
end
value
end
private :scope_interpolate
def hiera_interpolate(data, key, scope, extra_data)
Hiera::Backend.lookup(key, nil, scope, nil, :priority)
end
private :hiera_interpolate
end
end