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require 'puppet/indirector/terminus'
require 'puppet/util/file_locking'
# The base class for YAML indirection termini.
class Puppet::Indirector::Yaml < Puppet::Indirector::Terminus
include Puppet::Util::FileLocking
# Read a given name's file in and convert it from YAML.
def find(request)
file = path(request.key)
return nil unless FileTest.exist?(file)
yaml = nil
begin
readlock(file) { |fh| yaml = fh.read }
rescue => detail
raise Puppet::Error, "Could not read YAML data for #{indirection.name} #{request.key}: #{detail}"
end
begin
return from_yaml(yaml)
rescue => detail
raise Puppet::Error, "Could not parse YAML data for #{indirection.name} #{request.key}: #{detail}"
end
end
# Convert our object to YAML and store it to the disk.
def save(request)
raise ArgumentError.new("You can only save objects that respond to :name") unless request.instance.respond_to?(:name)
file = path(request.key)
basedir = File.dirname(file)
# This is quite likely a bad idea, since we're not managing ownership or modes.
Dir.mkdir(basedir) unless FileTest.exist?(basedir)
begin
writelock(file, 0660) { |f| f.print to_yaml(request.instance) }
rescue TypeError => detail
Puppet.err "Could not save #{self.name} #{request.key}: #{detail}"
end
end
# Return the path to a given node's file.
def path(name,ext='.yaml')
base = Puppet.run_mode.master? ? Puppet[:yamldir] : Puppet[:clientyamldir]
File.join(base, self.class.indirection_name.to_s, name.to_s + ext)
end
def destroy(request)
file_path = path(request.key)
File.unlink(file_path) if File.exists?(file_path)
end
def search(request)
Dir.glob(path(request.key,'')).collect do |file|
YAML.load_file(file)
end
end
private
def from_yaml(text)
YAML.load(text)
end
def to_yaml(object)
YAML.dump(object)
end
end
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