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require 'puppet'
require 'puppet/util/tagging'
require 'puppet/resource/reference'
# The simplest resource class. Eventually it will function as the
# base class for all resource-like behaviour.
class Puppet::Resource
include Puppet::Util::Tagging
include Enumerable
attr_accessor :type, :title, :file, :line, :catalog
# Proxy these methods to the parameters hash. It's likely they'll
# be overridden at some point, but this works for now.
%w{has_key? keys length delete empty? <<}.each do |method|
define_method(method) do |*args|
@parameters.send(method, *args)
end
end
# Set a given parameter. Converts all passed names
# to lower-case symbols.
def []=(param, value)
@parameters[parameter_name(param)] = value
end
# Return a given parameter's value. Converts all passed names
# to lower-case symbols.
def [](param)
@parameters[parameter_name(param)]
end
# Iterate over each param/value pair, as required for Enumerable.
def each
@parameters.each { |p,v| yield p, v }
end
# Create our resource.
def initialize(type, title, parameters = {})
@reference = Puppet::Resource::Reference.new(type, title)
@parameters = {}
parameters.each do |param, value|
self[param] = value
end
tag(@reference.type)
tag(@reference.title) if valid_tag?(@reference.title)
end
# Provide a reference to our resource in the canonical form.
def ref
@reference.to_s
end
# Get our title information from the reference, since it will canonize it for us.
def title
@reference.title
end
# Get our type information from the reference, since it will canonize it for us.
def type
@reference.type
end
# Produce a simple hash of our parameters.
def to_hash
@parameters.dup
end
def to_s
return ref
end
# Convert our resource to Puppet code.
def to_manifest
"%s { '%s':\n%s\n}" % [self.type.to_s.downcase, self.title,
@parameters.collect { |p, v|
if v.is_a? Array
" #{p} => [\'#{v.join("','")}\']"
else
" #{p} => \'#{v}\'"
end
}.join(",\n")
]
end
def to_ref
ref
end
# Convert our resource to a RAL resource instance. Creates component
# instances for resource types that don't exist.
def to_ral
if typeklass = Puppet::Type.type(self.type)
return typeklass.create(self)
else
return Puppet::Type::Component.create(self)
end
end
# Translate our object to a backward-compatible transportable object.
def to_trans
if @reference.builtin_type?
result = to_transobject
else
result = to_transbucket
end
result.file = self.file
result.line = self.line
return result
end
# Create an old-style TransObject instance, for builtin resource types.
def to_transobject
# Now convert to a transobject
result = Puppet::TransObject.new(@reference.title, @reference.type)
to_hash.each do |p, v|
if v.is_a?(Puppet::Resource::Reference)
v = v.to_trans_ref
elsif v.is_a?(Array)
v = v.collect { |av|
if av.is_a?(Puppet::Resource::Reference)
av = av.to_trans_ref
end
av
}
end
# If the value is an array with only one value, then
# convert it to a single value. This is largely so that
# the database interaction doesn't have to worry about
# whether it returns an array or a string.
result[p.to_s] = if v.is_a?(Array) and v.length == 1
v[0]
else
v
end
end
result.tags = self.tags
return result
end
private
# Create an old-style TransBucket instance, for non-builtin resource types.
def to_transbucket
bucket = Puppet::TransBucket.new([])
bucket.type = self.type
bucket.name = self.title
# TransBuckets don't support parameters, which is why they're being deprecated.
return bucket
end
# Produce a canonical method name.
def parameter_name(param)
param.to_s.downcase.to_sym
end
end
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