Class: Puppet::Resource::Catalog

Inherits:
Graph::SimpleGraph show all
Extended by:
Indirector, Util::Pson
Includes:
Util::Tagging
Defined in:
lib/puppet/resource/catalog.rb

Overview

This class models a node catalog. It is the thing meant to be passed from server to client, and it contains all of the information in the catalog, including the resources and the relationships between them.

Defined Under Namespace

Classes: ActiveRecord, Compiler, DuplicateResourceError, Json, Queue, Rest, StaticCompiler, StoreConfigs, Yaml

Constant Summary

Constants included from Indirector

Indirector::BadNameRegexp

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Indirector

configure_routes, indirects

Methods included from Util::Pson

pson_create

Methods included from Util::Tagging

#tag, #tagged?, #tags, #tags=

Methods inherited from Graph::SimpleGraph

#add_edge, #add_relationship, #add_vertex, #adjacent, #dependencies, #dependents, #direct_dependencies_of, #direct_dependents_of, #directed?, #dotty, #downstream_from_vertex, #each_edge, #edge?, #edges, #edges_between, #find_cycles_in_graph, #instance_variable_get, #leaves, #matching_edges, #path_between, #paths_in_cycle, #remove_edge!, #remove_vertex!, #report_cycles_in_graph, #reversal, #size, #tarjan, #to_a, #to_dot, #to_dot_graph, #to_yaml_properties, #tree_from_vertex, #upstream_from_vertex, #vertex?, #vertices, #walk, #write_cycles_to_graph, #yaml_initialize

Constructor Details

#initialize(name = nil) ⇒ Catalog

Returns a new instance of Catalog.



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# File 'lib/puppet/resource/catalog.rb', line 235

def initialize(name = nil)
  super()
  @name = name if name
  @classes = []
  @resource_table = {}
  @resources = []
  @relationship_graph = nil

  @host_config = true

  @aliases = {}

  if block_given?
    yield(self)
    finalize
  end
end

Instance Attribute Details

#client_version ⇒ Object

Some metadata to help us compile and generally respond to the current state.



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# File 'lib/puppet/resource/catalog.rb', line 47

def client_version
  @client_version
end

#environment ⇒ Object

The environment for this catalog



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# File 'lib/puppet/resource/catalog.rb', line 50

def environment
  @environment
end

#from_cache ⇒ Object

Whether this catalog was retrieved from the cache, which affects whether it is written back out again.



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# File 'lib/puppet/resource/catalog.rb', line 44

def from_cache
  @from_cache
end

#host_config ⇒ Object

Whether this is a host catalog, which behaves very differently. In particular, reports are sent, graphs are made, and state is stored in the state database. If this is set incorrectly, then you often end up in infinite loops, because catalogs are used to make things that the host catalog needs.



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# File 'lib/puppet/resource/catalog.rb', line 40

def host_config
  @host_config
end

#name ⇒ Object

The host name this is a catalog for.



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# File 'lib/puppet/resource/catalog.rb', line 26

def name
  @name
end

#retrieval_duration ⇒ Object

How long this catalog took to retrieve. Used for reporting stats.



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# File 'lib/puppet/resource/catalog.rb', line 33

def retrieval_duration
  @retrieval_duration
end

#server_version ⇒ Object

Some metadata to help us compile and generally respond to the current state.



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# File 'lib/puppet/resource/catalog.rb', line 47

def server_version
  @server_version
end

#version ⇒ Object

The catalog version. Used for testing whether a catalog is up to date.



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# File 'lib/puppet/resource/catalog.rb', line 30

def version
  @version
end

Class Method Details

.edge_from_pson(result, edge) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 351

def self.edge_from_pson(result, edge)
  # If no type information was presented, we manually find
  # the class.
  edge = Puppet::Relationship.from_pson(edge) if edge.is_a?(Hash)
  unless source = result.resource(edge.source)
    raise ArgumentError, "Could not convert from pson: Could not find relationship source #{edge.source.inspect}"
  end
  edge.source = source

  unless target = result.resource(edge.target)
    raise ArgumentError, "Could not convert from pson: Could not find relationship target #{edge.target.inspect}"
  end
  edge.target = target

  result.add_edge(edge)
end

.from_pson(data) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 316

def self.from_pson(data)
  result = new(data['name'])

  if tags = data['tags']
    result.tag(*tags)
  end

  if version = data['version']
    result.version = version
  end

  if environment = data['environment']
    result.environment = environment
  end

  if resources = data['resources']
    result.add_resource(*resources.collect do |res|
      Puppet::Resource.from_pson(res)
    end)
  end

  if edges = data['edges']
    edges = PSON.parse(edges) if edges.is_a?(String)
    edges.each do |edge|
      edge_from_pson(result, edge)
    end
  end

  if classes = data['classes']
    result.add_class(*classes)
  end

  result
end

Instance Method Details

#add_class(*classes) ⇒ Object

Add classes to our class list.



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# File 'lib/puppet/resource/catalog.rb', line 53

def add_class(*classes)
  classes.each do |klass|
    @classes << klass
  end

  # Add the class names as tags, too.
  tag(*classes)
end

#add_resource(*resources) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 67

def add_resource(*resources)
  resources.each do |resource|
    add_one_resource(resource)
  end
end

#alias(resource, key) ⇒ Object

Create an alias for a resource.



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# File 'lib/puppet/resource/catalog.rb', line 112

def alias(resource, key)
  resource.ref =~ /^(.+)\[/
  class_name = $1 || resource.class.name

  newref = [class_name, key].flatten

  if key.is_a? String
    ref_string = "#{class_name}[#{key}]"
    return if ref_string == resource.ref
  end

  # LAK:NOTE It's important that we directly compare the references,
  # because sometimes an alias is created before the resource is
  # added to the catalog, so comparing inside the below if block
  # isn't sufficient.
  if existing = @resource_table[newref]
    return if existing == resource
    resource_declaration = " at #{resource.file}:#{resource.line}" if resource.file and resource.line
    existing_declaration = " at #{existing.file}:#{existing.line}" if existing.file and existing.line
    msg = "Cannot alias #{resource.ref} to #{key.inspect}#{resource_declaration}; resource #{newref.inspect} already declared#{existing_declaration}"
    raise ArgumentError, msg
  end
  @resource_table[newref] = resource
  @aliases[resource.ref] ||= []
  @aliases[resource.ref] << newref
end

#apply(options = {}) {|transaction| ... } ⇒ Puppet::Transaction

Apply our catalog to the local host.

Parameters:

Options Hash (options):

  • :report (Puppet::Transaction::Report) —

    The report object to log this transaction to. This is optional, and the resulting transaction will create a report if not supplied.

  • :tags (Array[String]) —

    Tags used to filter the transaction. If supplied then only resources tagged with any of these tags will be evaluated.

  • :ignoreschedules (Boolean) —

    Ignore schedules when evaluating resources

  • :for_network_device (Boolean) —

    Whether this catalog is for a network device

Yields:

  • (transaction)

Returns:



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# File 'lib/puppet/resource/catalog.rb', line 157

def apply(options = {})
  Puppet::Util::Storage.load if host_config?

  transaction = create_transaction(options)

  begin
    transaction.report.as_logging_destination do
      transaction.evaluate
    end
  rescue Puppet::Error => detail
    Puppet.log_exception(detail, "Could not apply complete catalog: #{detail}")
  rescue => detail
    Puppet.log_exception(detail, "Got an uncaught exception of type #{detail.class}: #{detail}")
  ensure
    # Don't try to store state unless we're a host config
    # too recursive.
    Puppet::Util::Storage.store if host_config?
  end

  yield transaction if block_given?

  transaction
end

#classes ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 207

def classes
  @classes.dup
end

#clear(remove_resources = true) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 194

def clear(remove_resources = true)
  super()
  # We have to do this so that the resources clean themselves up.
  @resource_table.values.each { |resource| resource.remove } if remove_resources
  @resource_table.clear
  @resources = []

  if @relationship_graph
    @relationship_graph.clear
    @relationship_graph = nil
  end
end

#container_of(resource) ⇒ A Resource?

Returns the resource that contains the given resource.

Parameters:

  • resource (A Resource) —

    a resource in the catalog

Returns:

  • (A Resource, nil) —

    the resource that contains the given resource



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# File 'lib/puppet/resource/catalog.rb', line 76

def container_of(resource)
  adjacent(resource, :direction => :in)[0]
end

#create_resource(type, options) ⇒ Object

Create a new resource and register it in the catalog.



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# File 'lib/puppet/resource/catalog.rb', line 212

def create_resource(type, options)
  unless klass = Puppet::Type.type(type)
    raise ArgumentError, "Unknown resource type #{type}"
  end
  return unless resource = klass.new(options)

  add_resource(resource)
  resource
end

#filter(&block) ⇒ Object

filter out the catalog, applying block to each resource. If the block result is false, the resource will be kept otherwise it will be skipped



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# File 'lib/puppet/resource/catalog.rb', line 408

def filter(&block)
  to_catalog :to_resource, &block
end

#finalize ⇒ Object

Make sure all of our resources are “finished”.



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# File 'lib/puppet/resource/catalog.rb', line 223

def finalize
  make_default_resources

  @resource_table.values.each { |resource| resource.finish }

  write_graph(:resources)
end

#host_config? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/resource/catalog.rb', line 231

def host_config?
  host_config
end

#make_default_resources ⇒ Object

Make the default objects necessary for function.



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# File 'lib/puppet/resource/catalog.rb', line 254

def make_default_resources
  # We have to add the resources to the catalog, or else they won't get cleaned up after
  # the transaction.

  # First create the default scheduling objects
  Puppet::Type.type(:schedule).mkdefaultschedules.each { |res| add_resource(res) unless resource(res.ref) }

  # And filebuckets
  if bucket = Puppet::Type.type(:filebucket).mkdefaultbucket
    add_resource(bucket) unless resource(bucket.ref)
  end
end

#relationship_graph ⇒ Puppet::Graph::RelationshipGraph

The relationship_graph form of the catalog. This contains all of the dependency edges that are used for determining order.

Returns:



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# File 'lib/puppet/resource/catalog.rb', line 186

def relationship_graph
  if @relationship_graph.nil?
    @relationship_graph = Puppet::Graph::RelationshipGraph.new(prioritizer)
    @relationship_graph.populate_from(self)
  end
  @relationship_graph
end

#remove_resource(*resources) ⇒ Object

Remove the resource from our catalog. Notice that we also call ‘remove’ on the resource, at least until resource classes no longer maintain references to the resource instances.



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# File 'lib/puppet/resource/catalog.rb', line 270

def remove_resource(*resources)
  resources.each do |resource|
    title_key = title_key_for_ref(resource.ref)
    @resource_table.delete(title_key)
    if aliases = @aliases[resource.ref]
      aliases.each { |res_alias| @resource_table.delete(res_alias) }
      @aliases.delete(resource.ref)
    end
    remove_vertex!(resource) if vertex?(resource)
    @relationship_graph.remove_vertex!(resource) if @relationship_graph and @relationship_graph.vertex?(resource)
    @resources.delete(title_key)
    resource.remove
  end
end

#resource(type, title = nil) ⇒ Object

Look a resource up by its reference (e.g., File).



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# File 'lib/puppet/resource/catalog.rb', line 286

def resource(type, title = nil)
  # Always create a resource reference, so that it always
  # canonicalizes how we are referring to them.
  if title
    res = Puppet::Resource.new(type, title)
  else
    # If they didn't provide a title, then we expect the first
    # argument to be of the form 'Class[name]', which our
    # Reference class canonicalizes for us.
    res = Puppet::Resource.new(nil, type)
  end
  title_key      = [res.type, res.title.to_s]
  uniqueness_key = [res.type, res.uniqueness_key].flatten
  @resource_table[title_key] || @resource_table[uniqueness_key]
end

#resource_keys ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 306

def resource_keys
  @resource_table.keys
end

#resource_refs ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 302

def resource_refs
  resource_keys.collect{ |type, name| name.is_a?( String ) ? "#{type}[#{name}]" : nil}.compact
end

#resources ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 310

def resources
  @resources.collect do |key|
    @resource_table[key]
  end
end

#title_key_for_ref(ref) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 62

def title_key_for_ref( ref )
  ref =~ /^([-\w:]+)\[(.*)\]$/m
  [$1, $2]
end

#to_data_hash ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 368

def to_data_hash
  {
    'tags'      => tags,
    'name'      => name,
    'version'   => version,
    'environment' => environment.to_s,
    'resources' => @resources.collect { |v| @resource_table[v].to_pson_data_hash },
    'edges'     => edges.   collect { |e| e.to_pson_data_hash },
    'classes'   => classes
  }
end

#to_pson(*args) ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 391

def to_pson(*args)
  to_pson_data_hash.to_pson(*args)
end

#to_pson_data_hash ⇒ Object 



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# File 'lib/puppet/resource/catalog.rb', line 381

def to_pson_data_hash
  {
    'document_type' => 'Catalog',
    'data'       => to_data_hash,
    'metadata' => {
      'api_version' => 1
      }
  }
end

#to_ral ⇒ Object

Convert our catalog into a RAL catalog.



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# File 'lib/puppet/resource/catalog.rb', line 396

def to_ral
  to_catalog :to_ral
end

#to_resource ⇒ Object

Convert our catalog into a catalog of Puppet::Resource instances.



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# File 'lib/puppet/resource/catalog.rb', line 401

def to_resource
  to_catalog :to_resource
end

#write_class_file ⇒ Object

Store the classes in the classfile.



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# File 'lib/puppet/resource/catalog.rb', line 413

def write_class_file
  ::File.open(Puppet[:classfile], "w") do |f|
    f.puts classes.join("\n")
  end
rescue => detail
  Puppet.err "Could not create class file #{Puppet[:classfile]}: #{detail}"
end

#write_graph(name) ⇒ Object

Produce the graph files if requested.



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# File 'lib/puppet/resource/catalog.rb', line 439

def write_graph(name)
  # We only want to graph the main host catalog.
  return unless host_config?

  super
end

#write_resource_file ⇒ Object

Store the list of resources we manage



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# File 'lib/puppet/resource/catalog.rb', line 422

def write_resource_file
  ::File.open(Puppet[:resourcefile], "w") do |f|
    to_print = resources.map do |resource|
      next unless resource.managed?
      if resource.name_var
        "#{resource.type}[#{resource[resource.name_var]}]"
      else
        "#{resource.ref.downcase}"
      end
    end.compact
    f.puts to_print.join("\n")
  end
rescue => detail
  Puppet.err "Could not create resource file #{Puppet[:resourcefile]}: #{detail}"
end