Class: Puppet::Parser::Resource

Inherits:
Resource show all
Includes:
Util, Util::Errors, Util::Logging
Defined in:
lib/puppet/parser/resource.rb

Overview

The primary difference between this class and its parent is that this class has rules on who can set parameters

Defined Under Namespace

Classes: Param

Constant Summary

Constants included from Util

Util::AbsolutePathPosix, Util::AbsolutePathWindows, Util::DEFAULT_POSIX_MODE, Util::DEFAULT_WINDOWS_MODE, Util::RFC_3986_URI_REGEX

Constants included from Util::SymbolicFileMode

Util::SymbolicFileMode::SetGIDBit, Util::SymbolicFileMode::SetUIDBit, Util::SymbolicFileMode::StickyBit, Util::SymbolicFileMode::SymbolicMode, Util::SymbolicFileMode::SymbolicSpecialToBit

Constants included from Util::POSIX

Util::POSIX::LOCALE_ENV_VARS, Util::POSIX::USER_ENV_VARS

Constants inherited from Resource

Resource::ATTRIBUTES, Resource::EMPTY_ARRAY, Resource::EMPTY_HASH, Resource::PCORE_TYPE_KEY, Resource::TYPE_CLASS, Resource::TYPE_NODE, Resource::TYPE_SITE, Resource::VALUE_KEY

Constants included from Indirector

Indirector::BadNameRegexp

Constants included from Util::Tagging

Util::Tagging::ValidTagRegex

Instance Attribute Summary collapse

Attributes inherited from Resource

#sensitive_parameters, #strict, #title, #type, #validate_parameters

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Util::Logging

#clear_deprecation_warnings, #debug, #deprecation_warning, #format_exception, #get_deprecation_offender, #log_and_raise, #log_deprecations_to_file, #log_exception, #puppet_deprecation_warning, #send_log, setup_facter_logging!, #warn_once

Methods included from Util::Errors

#adderrorcontext, #devfail, #error_context, error_location, error_location_with_space, error_location_with_unknowns, #exceptwrap, #fail

Methods included from Util

absolute_path?, benchmark, chuser, clear_environment, default_env, deterministic_rand, deterministic_rand_int, exit_on_fail, get_env, get_environment, logmethods, merge_environment, path_to_uri, pretty_backtrace, replace_file, safe_posix_fork, set_env, symbolizehash, thinmark, uri_encode, uri_query_encode, uri_to_path, which, withenv, withumask

Methods included from Util::SymbolicFileMode

#normalize_symbolic_mode, #symbolic_mode_to_int, #valid_symbolic_mode?

Methods included from Util::POSIX

#get_posix_field, #gid, groups_of, #idfield, #methodbyid, #methodbyname, #search_posix_field, #uid

Methods inherited from Resource

#==, #builtin?, #builtin_type?, #class?, #copy_as_resource, #each, #environment=, #export, from_data_hash, #include?, #initialize_from_hash, #inspect, #is_application_component?, #is_capability?, #key_attributes, #prune_parameters, #ref, #resolve, resource_type, #resource_type, #resource_type=, #set_default_parameters, #stage?, #to_data_hash, #to_hiera_hash, #to_hierayaml, #to_manifest, #to_ref, #to_s, type_and_title, #uniqueness_key, #valid_parameter?, #validate_complete, #validate_parameter, value_to_json_data, #yaml_property_munge

Methods included from Indirector

configure_routes, #indirects

Methods included from Enumerable

#uniq

Methods included from Util::PsychSupport

#encode_with, #init_with

Methods included from Util::Tagging

#merge_into, #merge_tags_from, #set_tags, #tag, #tag_if_valid, #tagged?, #tags, #tags=, #valid_tag?

Constructor Details

#initialize(type, title, attributes, with_defaults = true) ⇒ Resource

Returns a new instance of Resource

Raises:

  • (ArgumentError) 

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# File 'lib/puppet/parser/resource.rb', line 124

def initialize(type, title, attributes, with_defaults = true)
  raise ArgumentError, _('Resources require a hash as last argument') unless attributes.is_a? Hash
  raise ArgumentError, _('Resources require a scope') unless attributes[:scope]
  super(type, title, attributes)

  @source ||= scope.source

  if with_defaults
    scope.lookupdefaults(self.type).each_pair do |name, param|
      unless @parameters.include?(name)
        self.debug "Adding default for #{name}"

        param = param.dup
        @parameters[name] = param
        tag(*param.value) if param.name == :tag
      end
    end
  end
end

Instance Attribute Details

#catalog ⇒ Object

Returns the value of attribute catalog


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# File 'lib/puppet/parser/resource.rb', line 15

def catalog
  @catalog
end

#collector_id ⇒ Object

Returns the value of attribute collector_id


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# File 'lib/puppet/parser/resource.rb', line 14

def collector_id
  @collector_id
end

#evaluated ⇒ Object

Returns the value of attribute evaluated


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# File 'lib/puppet/parser/resource.rb', line 15

def evaluated
  @evaluated
end

#exported ⇒ Object

Returns the value of attribute exported


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# File 'lib/puppet/parser/resource.rb', line 18

def exported
  @exported
end

#file ⇒ Object

Returns the value of attribute file


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# File 'lib/puppet/parser/resource.rb', line 16

def file
  @file
end

#line ⇒ Object

Returns the value of attribute line


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# File 'lib/puppet/parser/resource.rb', line 16

def line
  @line
end

#override ⇒ Object

Returns the value of attribute override


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# File 'lib/puppet/parser/resource.rb', line 15

def override
  @override
end

#parameters ⇒ Object (readonly)

Returns the value of attribute parameters


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# File 'lib/puppet/parser/resource.rb', line 18

def parameters
  @parameters
end

#scope ⇒ Object

Returns the value of attribute scope


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# File 'lib/puppet/parser/resource.rb', line 14

def scope
  @scope
end

#source ⇒ Object

Returns the value of attribute source


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# File 'lib/puppet/parser/resource.rb', line 14

def source
  @source
end

#translated ⇒ Object

Returns the value of attribute translated


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# File 'lib/puppet/parser/resource.rb', line 15

def translated
  @translated
end

#virtual ⇒ Object

Returns the value of attribute virtual


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# File 'lib/puppet/parser/resource.rb', line 15

def virtual
  @virtual
end

Class Method Details

.relationship_parameter?(name) ⇒ Boolean

Determine whether the provided parameter name is a relationship parameter.


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# File 'lib/puppet/parser/resource.rb', line 21

def self.relationship_parameter?(name)
  @relationship_names ||= Puppet::Type.relationship_params.collect { |p| p.name }
  @relationship_names.include?(name)
end

Instance Method Details

#[](param) ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 31

def [](param)
  param = param.intern
  if param == :title
    return self.title
  end
  if @parameters.has_key?(param)
    @parameters[param].value
  else
    nil
  end
end

#add_edge_to_stage ⇒ Object

Process the stage metaparameter for a class. A containment edge is drawn from the class to the stage. The stage for containment defaults to main, if none is specified.


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# File 'lib/puppet/parser/resource.rb', line 56

def add_edge_to_stage
  return unless self.class?

  stage = catalog.resource(:stage, self[:stage] || (scope && scope.resource && scope.resource[:stage]) || :main)
  unless stage
    raise ArgumentError, _("Could not find stage %{stage} specified by %{resource}") % { stage: self[:stage] || :main, resource: self }
  end

  self[:stage] ||= stage.title unless stage.title == :main
  catalog.add_edge(stage, self)
end

#add_parameters_from_consume ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Fills resource params from a capability

This backs 'consumes => Sql'


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# File 'lib/puppet/parser/resource.rb', line 267

def add_parameters_from_consume
  return if self[:consume].nil?

  map = {}
  [ self[:consume] ].flatten.map do |ref|
    # Assert that the ref really is a resource reference
    raise Puppet::Error, _("Invalid consume in %{value0}: %{ref} is not a resource") % { value0: self.ref, ref: ref } unless ref.is_a?(Puppet::Resource)

    # Resolve references
    t = ref.type
    t = Puppet::Pops::Evaluator::Runtime3ResourceSupport.find_resource_type(scope, t) unless t == 'class' || t == 'node'
    cap = catalog.resource(t, ref.title)
    if cap.nil?
      raise Puppet::Error, _("Resource %{ref} could not be found; it might not have been produced yet") % { ref: ref }
    end

    # Ensure that the found resource is a capability resource
    raise Puppet::Error, _("Invalid consume in %{ref}: %{cap} is not a capability resource") % { ref: ref, cap: cap } unless cap.resource_type.is_capability?
    cap
  end.each do |cns|
    # Establish mappings
    blueprint = resource_type.consumes.find do |bp|
      bp[:capability] == cns.type
    end
    # @todo lutter 2015-08-03: catch this earlier, can we do this during
    # static analysis ?
    raise _("Resource %{res} tries to consume %{cns} but no 'consumes' mapping exists for %{resource_type} and %{cns_type}") % { res: self, cns: cns, resource_type: self.resource_type, cns_type: cns.type } unless blueprint

    # setup scope that has, for each attr of cns, a binding to cns[attr]
    scope.with_global_scope do |global_scope|
      cns_scope = global_scope.newscope(:source => self, :resource => self)
      cns.to_hash.each { |name, value| cns_scope[name.to_s] = value }

      # evaluate mappings in that scope
      resource_type.arguments.keys.each do |name|
        expr = blueprint[:mappings][name]
        if expr
          # Explicit mapping
          value = expr.safeevaluate(cns_scope)
        else
          value = cns[name]
        end
        unless value.nil?
          # @todo lutter 2015-07-01: this should be caught by the checker
          # much earlier. We consume several capres, at least two of which
          # want to map to the same parameter (PUP-5080)
          raise _("Attempt to reassign attribute '%{name}' in '%{resource}' caused by multiple consumed mappings to the same attribute") % { name: name, resource: self } if map[name]
          map[name] = value
        end
      end
    end
  end

  map.each { |name, value| self[name] = value if self[name].nil? }
end

#eachparam ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 43

def eachparam
  @parameters.each do |name, param|
    yield param
  end
end

#environment ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 49

def environment
  scope.environment
end

#evaluate ⇒ Object

Retrieve the associated definition and evaluate it.


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# File 'lib/puppet/parser/resource.rb', line 69

def evaluate
  return if evaluated?
  Puppet::Util::Profiler.profile(_("Evaluated resource %{res}") % { res: self }, [:compiler, :evaluate_resource, self]) do
    @evaluated = true
    if builtin_type?
      devfail "Cannot evaluate a builtin type (#{type})"
    elsif resource_type.nil?
      self.fail "Cannot find definition #{type}"
    else
      finish_evaluation() # do not finish completely (as that destroys Sensitive data)
      resource_type.evaluate_code(self)
    end
  end
end

#evaluated? ⇒ Boolean 


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# File 'lib/puppet/parser/resource.rb', line 29

def evaluated?;  !!@evaluated;  end

#finish(do_validate = true) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Do any finishing work on this object, called before storage/translation. The method does nothing the second time it is called on the same resource.


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# File 'lib/puppet/parser/resource.rb', line 111

def finish(do_validate = true)
  return if finished?
  @finished = true
  finish_evaluation
  replace_sensitive_data
  validate if do_validate
end

#finish_evaluation ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Finish the evaluation by assigning defaults and scope tags


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# File 'lib/puppet/parser/resource.rb', line 98

def finish_evaluation
  return if @evaluation_finished
  add_scope_tags
  @evaluation_finished = true
end

#finished? ⇒ Boolean

Has this resource already been finished?


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# File 'lib/puppet/parser/resource.rb', line 120

def finished?
  @finished
end

#is_unevaluated_consumer? ⇒ Boolean 


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# File 'lib/puppet/parser/resource.rb', line 153

def is_unevaluated_consumer?
  # We don't declare a new variable here just to test. Saves memory
  instance_variable_defined?(:@unevaluated_consumer)
end

#isomorphic? ⇒ Boolean

Is this resource modeling an isomorphic resource type?


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# File 'lib/puppet/parser/resource.rb', line 145

def isomorphic?
  if builtin_type?
    return resource_type.isomorphic?
  else
    return true
  end
end

#mark_unevaluated_consumer ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 158

def mark_unevaluated_consumer
  @unevaluated_consumer = true
end

#merge(resource) ⇒ Object

Merge an override resource in. This will throw exceptions if any overrides aren't allowed.


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# File 'lib/puppet/parser/resource.rb', line 164

def merge(resource)
  # Test the resource scope, to make sure the resource is even allowed
  # to override.
  unless self.source.object_id == resource.source.object_id || resource.source.child_of?(self.source)
    raise Puppet::ParseError.new(_("Only subclasses can override parameters"), resource.file, resource.line)
  end

  if evaluated?
    error_location_str = Puppet::Util::Errors.error_location(file, line)
    msg = if error_location_str.empty?
            _('Attempt to override an already evaluated resource with new values')
          else
            _('Attempt to override an already evaluated resource, defined at %{error_location}, with new values') % { error_location: error_location_str }
          end
    strict = Puppet[:strict]
    unless strict == :off
      if strict == :error
        raise Puppet::ParseError.new(msg, resource.file, resource.line)
      else
        msg += Puppet::Util::Errors.error_location_with_space(resource.file, resource.line)
        Puppet.warning(msg)
      end
    end
  end

  # Some of these might fail, but they'll fail in the way we want.
  resource.parameters.each do |name, param|
    override_parameter(param)
  end
end

#name ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 195

def name
  self[:name] || self.title
end

#offset ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 323

def offset
  nil
end

#override? ⇒ Boolean 


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# File 'lib/puppet/parser/resource.rb', line 28

def override?;   !!@override;   end

#pos ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 327

def pos
  nil
end

#raw_tagged?(tag_array) ⇒ Boolean

Answers if this resource is tagged with at least one of the tags given in downcased string form.

The method is a faster variant of the tagged? method that does no conversion of its arguments.

The match takes into account the tags that a resource will inherit from its container but have not been set yet. It does not take tags set via resource defaults as these will never be set on the resource itself since all resources always have tags that are automatically assigned.


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# File 'lib/puppet/parser/resource.rb', line 259

def raw_tagged?(tag_array)
  super || ((scope_resource = scope.resource) && !scope_resource.equal?(self) && scope_resource.raw_tagged?(tag_array))
end

#set_parameter(param, value = nil) ⇒ Object Also known as: []=

Define a parameter in our resource. if we ever receive a parameter named 'tag', set the resource tags with its value.


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# File 'lib/puppet/parser/resource.rb', line 205

def set_parameter(param, value = nil)
  if ! param.is_a?(Puppet::Parser::Resource::Param)
    param = param.name if param.is_a?(Puppet::Pops::Resource::Param)
    param = Puppet::Parser::Resource::Param.new(
      :name => param, :value => value, :source => self.source
    )
  end

  tag(*param.value) if param.name == :tag

  # And store it in our parameter hash.
  @parameters[param.name] = param
end

#to_hash ⇒ Object 


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# File 'lib/puppet/parser/resource.rb', line 220

def to_hash
  parse_title.merge(@parameters.reduce({}) do |result, (_, param)|
    value = param.value
    value = (:undef == value) ? nil : value

    unless value.nil?
      case param.name
      when :before, :subscribe, :notify, :require
        if value.is_a?(Array)
          value = value.flatten.reject {|v| v.nil? || :undef == v }
        end
        result[param.name] = value
      else
        result[param.name] = value
      end
    end
    result
  end)
end

#to_ral ⇒ Object

Convert this resource to a RAL resource.


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# File 'lib/puppet/parser/resource.rb', line 241

def to_ral
  copy_as_resource.to_ral
end

#translated? ⇒ Boolean

Set up some boolean test methods


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# File 'lib/puppet/parser/resource.rb', line 27

def translated?; !!@translated; end