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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 %s %s: %s" % [indirection.name, request.key, detail]
end
begin
return from_yaml(yaml)
rescue => detail
raise Puppet::Error, "Could not parse YAML data for %s %s: %s" % [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.
unless FileTest.exist?(basedir)
Dir.mkdir(basedir)
end
begin
writelock(file, 0660) { |f| f.print to_yaml(request.instance) }
rescue TypeError => detail
Puppet.err "Could not save %s %s: %s" % [self.name, request.key, detail]
end
end
# Get the yaml directory
def base
Puppet.run_mode.master? ? Puppet[:yamldir] : Puppet[:clientyamldir]
end
# Return the path to a given node's file.
def path(name)
File.join(base, self.class.indirection_name.to_s, name.to_s + ".yaml")
end
# Do a glob on the yaml directory, loading each file found
def search(request)
Dir.glob(File.join(base, self.class.indirection_name.to_s, request.key)).collect { |f| YAML.load_file(f) }
end
private
def from_yaml(text)
YAML.load(text)
end
def to_yaml(object)
YAML.dump(object)
end
end
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