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require 'yaml'
require 'singleton'
require_relative '../../puppet/util/yaml'
# a class for storing state
class Puppet::Util::Storage
include Singleton
include Puppet::Util
def self.state
@@state
end
def initialize
self.class.load
end
# Return a hash that will be stored to disk. It's worth noting
# here that we use the object's full path, not just the name/type
# combination. At the least, this is useful for those non-isomorphic
# types like exec, but it also means that if an object changes locations
# in the configuration it will lose its cache.
def self.cache(object)
if object.is_a?(Symbol)
name = object
else
name = object.to_s
end
@@state[name] ||= {}
end
def self.clear
@@state.clear
end
def self.init
@@state = {}
end
self.init
def self.load
Puppet.settings.use(:main) unless FileTest.directory?(Puppet[:statedir])
filename = Puppet[:statefile]
unless Puppet::FileSystem.exist?(filename)
self.init if @@state.nil?
return
end
unless File.file?(filename)
Puppet.warning(_("Checksumfile %{filename} is not a file, ignoring") % { filename: filename })
return
end
Puppet::Util.benchmark(:debug, "Loaded state in %{seconds} seconds") do
begin
@@state = Puppet::Util::Yaml.safe_load_file(filename, [Symbol, Time])
rescue Puppet::Util::Yaml::YamlLoadError => detail
Puppet.err _("Checksumfile %{filename} is corrupt (%{detail}); replacing") % { filename: filename, detail: detail }
begin
File.rename(filename, filename + ".bad")
rescue
raise Puppet::Error, _("Could not rename corrupt %{filename}; remove manually") % { filename: filename }, detail.backtrace
end
end
end
unless @@state.is_a?(Hash)
Puppet.err _("State got corrupted")
self.init
end
end
def self.stateinspect
@@state.inspect
end
def self.store
Puppet.debug "Storing state"
Puppet.info _("Creating state file %{file}") % { file: Puppet[:statefile] } unless Puppet::FileSystem.exist?(Puppet[:statefile])
if Puppet[:statettl] == 0 || Puppet[:statettl] == Float::INFINITY
Puppet.debug "Not pruning old state cache entries"
else
Puppet::Util.benchmark(:debug, "Pruned old state cache entries in %{seconds} seconds") do
ttl_cutoff = Time.now - Puppet[:statettl]
@@state.reject! do |k,v|
@@state[k][:checked] && @@state[k][:checked] < ttl_cutoff
end
end
end
Puppet::Util.benchmark(:debug, "Stored state in %{seconds} seconds") do
Puppet::Util::Yaml.dump(@@state, Puppet[:statefile])
end
end
end
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