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, Msgpack, Queue, Rest, StaticCompiler, StoreConfigs, Yaml

Constant Summary

Constants included from Indirector

Indirector::BadNameRegexp

Constants included from Util::Tagging

Util::Tagging::ValidTagRegex

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, environment = Puppet::Node::Environment::NONE) ⇒ Catalog

Returns a new instance of Catalog.



241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
 
# File 'lib/puppet/resource/catalog.rb', line 241

def initialize(name = nil, environment = Puppet::Node::Environment::NONE)
  super()
  @name = name
  @classes = []
  @resource_table = {}
  @resources = []
  @relationship_graph = nil

  @host_config = true
  @environment_instance = environment
  @environment = environment.to_s

  @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.



47
48
49
 
# File 'lib/puppet/resource/catalog.rb', line 47

def client_version
  @client_version
end

#environment ⇒ Object

A String representing the environment for this catalog



50
51
52
 
# File 'lib/puppet/resource/catalog.rb', line 50

def environment
  @environment
end

#environment_instance ⇒ Object

The actual environment instance that was used during compilation



53
54
55
 
# File 'lib/puppet/resource/catalog.rb', line 53

def environment_instance
  @environment_instance
end

#from_cache ⇒ Object

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



44
45
46
 
# 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.



40
41
42
 
# File 'lib/puppet/resource/catalog.rb', line 40

def host_config
  @host_config
end

#name ⇒ Object

The host name this is a catalog for.



26
27
28
 
# 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.



33
34
35
 
# 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.



47
48
49
 
# 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.



30
31
32
 
# File 'lib/puppet/resource/catalog.rb', line 30

def version
  @version
end

Class Method Details

.from_data_hash(data) ⇒ Object 



325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
 
# File 'lib/puppet/resource/catalog.rb', line 325

def self.from_data_hash(data)
  result = new(data['name'], Puppet::Node::Environment::NONE)

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

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

  if environment = data['environment']
    result.environment = environment
    result.environment_instance = Puppet::Node::Environment.remote(environment.to_sym)
  end

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

  if edges = data['edges']
    edges.each do |edge_hash|
      edge = Puppet::Relationship.from_data_hash(edge_hash)
      unless source = result.resource(edge.source)
        raise ArgumentError, "Could not intern from data: Could not find relationship source #{edge.source.inspect}"
      end
      edge.source = source

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

      result.add_edge(edge)
    end
  end

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

  result
end

.from_pson(data) ⇒ Object 



371
372
373
374
 
# File 'lib/puppet/resource/catalog.rb', line 371

def self.from_pson(data)
  Puppet.deprecation_warning("from_pson is being removed in favour of from_data_hash.")
  self.from_data_hash(data)
end

Instance Method Details

#add_class(*classes) ⇒ Object

Add classes to our class list.



56
57
58
59
60
61
62
63
 
# File 'lib/puppet/resource/catalog.rb', line 56

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 



70
71
72
73
74
 
# File 'lib/puppet/resource/catalog.rb', line 70

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

#alias(resource, key) ⇒ Object

Create an alias for a resource.



115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
 
# File 'lib/puppet/resource/catalog.rb', line 115

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:



160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
 
# File 'lib/puppet/resource/catalog.rb', line 160

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 



213
214
215
 
# File 'lib/puppet/resource/catalog.rb', line 213

def classes
  @classes.dup
end

#clear(remove_resources = true) ⇒ Object 



200
201
202
203
204
205
206
207
208
209
210
211
 
# File 'lib/puppet/resource/catalog.rb', line 200

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



79
80
81
 
# File 'lib/puppet/resource/catalog.rb', line 79

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.



218
219
220
221
222
223
224
225
226
 
# File 'lib/puppet/resource/catalog.rb', line 218

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



416
417
418
 
# File 'lib/puppet/resource/catalog.rb', line 416

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

#finalize ⇒ Object

Make sure all of our resources are “finished”.



229
230
231
232
233
234
235
 
# File 'lib/puppet/resource/catalog.rb', line 229

def finalize
  make_default_resources

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

  write_graph(:resources)
end

#host_config? ⇒ Boolean

Returns:

  • (Boolean) 


237
238
239
 
# File 'lib/puppet/resource/catalog.rb', line 237

def host_config?
  host_config
end

#make_default_resources ⇒ Object

Make the default objects necessary for function.



262
263
264
265
266
267
268
269
270
271
272
273
 
# File 'lib/puppet/resource/catalog.rb', line 262

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(given_prioritizer = nil) ⇒ Puppet::Graph::RelationshipGraph

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

Parameters:

  • given_prioritizer (Puppet::Graph::Prioritizer) (defaults to: nil) —

    The prioritization strategy to use when constructing the relationship graph. Defaults the being determined by the ordering setting.

Returns:



192
193
194
195
196
197
198
 
# File 'lib/puppet/resource/catalog.rb', line 192

def relationship_graph(given_prioritizer = nil)
  if @relationship_graph.nil?
    @relationship_graph = Puppet::Graph::RelationshipGraph.new(given_prioritizer || 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.



278
279
280
281
282
283
284
285
286
287
288
289
290
291
 
# File 'lib/puppet/resource/catalog.rb', line 278

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).



294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
 
# File 'lib/puppet/resource/catalog.rb', line 294

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
  res.catalog = self
  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 



315
316
317
 
# File 'lib/puppet/resource/catalog.rb', line 315

def resource_keys
  @resource_table.keys
end

#resource_refs ⇒ Object 



311
312
313
 
# File 'lib/puppet/resource/catalog.rb', line 311

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

#resources ⇒ Object 



319
320
321
322
323
 
# File 'lib/puppet/resource/catalog.rb', line 319

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

#title_key_for_ref(ref) ⇒ Object 



65
66
67
68
 
# File 'lib/puppet/resource/catalog.rb', line 65

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

#to_data_hash ⇒ Object 



376
377
378
379
380
381
382
383
384
385
386
 
# File 'lib/puppet/resource/catalog.rb', line 376

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 



399
400
401
 
# File 'lib/puppet/resource/catalog.rb', line 399

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

#to_pson_data_hash ⇒ Object 



389
390
391
392
393
394
395
396
397
 
# File 'lib/puppet/resource/catalog.rb', line 389

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.



404
405
406
 
# File 'lib/puppet/resource/catalog.rb', line 404

def to_ral
  to_catalog :to_ral
end

#to_resource ⇒ Object

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



409
410
411
 
# File 'lib/puppet/resource/catalog.rb', line 409

def to_resource
  to_catalog :to_resource
end

#write_class_file ⇒ Object

Store the classes in the classfile.



421
422
423
424
425
426
427
 
# File 'lib/puppet/resource/catalog.rb', line 421

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.



447
448
449
450
451
452
 
# File 'lib/puppet/resource/catalog.rb', line 447

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



430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
 
# File 'lib/puppet/resource/catalog.rb', line 430

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