Class: SparkleFormation

Inherits:
Object
  • Object
show all
Extended by:
Utils::AnimalStrings, Utils::TypeCheckers
Includes:
Bogo::Memoization, Utils::AnimalStrings
Defined in:
lib/sparkle_formation.rb,
lib/sparkle_formation/error.rb,
lib/sparkle_formation/utils.rb,
lib/sparkle_formation/sparkle.rb,
lib/sparkle_formation/version.rb,
lib/sparkle_formation/provider.rb,
lib/sparkle_formation/resources.rb,
lib/sparkle_formation/composition.rb,
lib/sparkle_formation/translation.rb,
lib/sparkle_formation/provider/aws.rb,
lib/sparkle_formation/provider/heat.rb,
lib/sparkle_formation/resources/aws.rb,
lib/sparkle_formation/provider/azure.rb,
lib/sparkle_formation/resources/heat.rb,
lib/sparkle_formation/sparkle_struct.rb,
lib/sparkle_formation/function_struct.rb,
lib/sparkle_formation/provider/google.rb,
lib/sparkle_formation/resources/azure.rb,
lib/sparkle_formation/resources/google.rb,
lib/sparkle_formation/translation/heat.rb,
lib/sparkle_formation/sparkle_attribute.rb,
lib/sparkle_formation/sparkle_formation.rb,
lib/sparkle_formation/provider/terraform.rb,
lib/sparkle_formation/sparkle_collection.rb,
lib/sparkle_formation/resources/rackspace.rb,
lib/sparkle_formation/resources/terraform.rb,
lib/sparkle_formation/sparkle_attribute/aws.rb,
lib/sparkle_formation/translation/rackspace.rb,
lib/sparkle_formation/sparkle_attribute/heat.rb,
lib/sparkle_formation/sparkle_attribute/azure.rb,
lib/sparkle_formation/sparkle_attribute/google.rb,
lib/sparkle_formation/sparkle_collection/rainbow.rb,
lib/sparkle_formation/sparkle_attribute/rackspace.rb,
lib/sparkle_formation/sparkle_attribute/terraform.rb

Overview

Formation container

Defined Under Namespace

Modules: Provider, SparkleAttribute, Utils Classes: AzureVariableStruct, Cache, Composition, Error, FunctionStruct, GoogleStruct, JinjaExpressionStruct, JinjaStatementStruct, Registry, Resources, Sparkle, SparkleCollection, SparkleStruct, TerraformStruct, Translation

Constant Summary collapse

SparklePack =

Alias for interfacing naming

Sparkle
VERSION =

Current library version

Gem::Version.new("3.0.32")
IGNORE_DIRECTORIES =

Returns directory names to ignore.

Returns:

  • (Array<String>) —

    directory names to ignore

[
  "components",
  "dynamics",
  "registry",
]
DEFAULT_STACK_RESOURCE =

Returns default stack resource name.

Returns:

  • (String) —

    default stack resource name

"AWS::CloudFormation::Stack"
VALID_STACK_RESOURCES =

Returns collection of valid stack resource types.

Returns:

  • (Array<String>) —

    collection of valid stack resource types

[DEFAULT_STACK_RESOURCE]
ALLOWED_GENERATION_PARAMETERS =

Attributes allowed for generation parameter definitions

[
  "type", "default", "description", "multiple", "prompt_when_nested",
  "allowed_values", "allowed_pattern", "max_length", "min_length",
  "max_value", "min_value",
]
VALID_GENERATION_PARAMETER_TYPES =

Allowed data types for parameters

["String", "Number", "Complex"]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils::TypeCheckers

__t_check, __t_hashish, __t_stringish

Methods included from Utils::AnimalStrings

camel, snake

Constructor Details

#initialize(name, options = {}) { ... } ⇒ SparkleFormation

Create new instance

Parameters:

  • name (String, Symbol) —

    name of formation

  • options (Hash) (defaults to: {}) —

    options

Options Hash (options):

  • :sparkle_path (String) —

    custom base path

  • :components_directory (String) —

    custom components path

  • :dynamics_directory (String) —

    custom dynamics path

  • :registry_directory (String) —

    custom registry path

  • :parameters (Hash) —

    parameters for stack generation

  • :disable_aws_builtins (Truthy, Falsey) —

    do not load builtins

Yields:

  • base context



405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 405

def initialize(name, options = {}, &base_block)
  @name = name.to_sym
  @component_paths = []
  if options[:sparkle_collection]
    @sparkle = options[:sparkle_collection]
    if options[:sparkle]
      @sparkle.add_sparkle(options[:sparkle])
    end
  else
    @sparkle = SparkleCollection.new
    if options[:sparkle]
      @sparkle.set_root(options[:sparkle])
    else
      @sparkle.set_root(
        Sparkle.new(
          Smash.new.tap { |h|
            s_path = options.fetch(:sparkle_path,
                                   self.class.custom_paths[:sparkle_path])
            if s_path
              h[:root] = s_path
            else
              h[:root] = :none
            end
          }
        )
      )
    end
  end
  self.provider = options.fetch(:provider, @parent ? @parent.provider : :aws)
  if provider == :aws || !options[:disable_aws_builtins]
    require "sparkle_formation/aws"
  end
  @parameters = set_generation_parameters!(
    options.fetch(:compile_time_parameters,
                  options.fetch(:parameters, {}))
  )
  @stack_resource_types = [
    stack_resource_type,
    *options.fetch(:stack_resource_types, []),
  ].compact.uniq
  @blacklisted_templates = [name]
  @composition = Composition.new(self)
  @parent = options[:parent]
  @seed = Smash.new(
    :inherit => options[:inherit],
    :layering => options[:layering],
  )
  if base_block
    load_block(base_block)
  end
  @compiled = nil
end

Instance Attribute Details

#blacklisted_templates ⇒ Array<String> (readonly)

Returns black listed templates.

Returns:

  • (Array<String>) —

    black listed templates



390
391
392
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 390

def blacklisted_templates
  @blacklisted_templates
end

#compile_state ⇒ Hash

Returns state hash for compile time parameters.

Returns:

  • (Hash) —

    state hash for compile time parameters



382
383
384
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 382

def compile_state
  @compile_state
end

#components_directory ⇒ String (readonly)

Returns components path.

Returns:

  • (String) —

    components path



370
371
372
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 370

def components_directory
  @components_directory
end

#composition ⇒ Composition (readonly)

Returns:



392
393
394
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 392

def composition
  @composition
end

#dynamics_directory ⇒ String (readonly)

Returns dynamics path.

Returns:

  • (String) —

    dynamics path



372
373
374
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 372

def dynamics_directory
  @dynamics_directory
end

#name ⇒ Symbol

Returns name of formation.

Returns:

  • (Symbol) —

    name of formation



364
365
366
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 364

def name
  @name
end

#parameters ⇒ Hash (readonly)

Returns parameters for stack generation.

Returns:

  • (Hash) —

    parameters for stack generation



376
377
378
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 376

def parameters
  @parameters
end

#parent ⇒ SparkleFormation

Returns parent stack.

Returns:



378
379
380
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 378

def parent
  @parent
end

#provider ⇒ Symbol

Returns target provider.

Returns:

  • (Symbol) —

    target provider



384
385
386
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 384

def provider
  @provider
end

#provider_resources ⇒ Class (readonly)

Returns Provider resources.

Returns:

  • (Class) —

    Provider resources



386
387
388
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 386

def provider_resources
  @provider_resources
end

#registry_directory ⇒ String (readonly)

Returns registry path.

Returns:

  • (String) —

    registry path



374
375
376
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 374

def registry_directory
  @registry_directory
end

#sparkle ⇒ Sparkle (readonly)

Returns parts store.

Returns:



366
367
368
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 366

def sparkle
  @sparkle
end

#sparkle_path ⇒ String (readonly)

Returns base path.

Returns:

  • (String) —

    base path



368
369
370
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 368

def sparkle_path
  @sparkle_path
end

#stack_resource_types ⇒ Array<String> (readonly)

Returns valid stack resource types.

Returns:

  • (Array<String>) —

    valid stack resource types



380
381
382
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 380

def stack_resource_types
  @stack_resource_types
end

#template_path ⇒ String

Returns local path to template.

Returns:

  • (String) —

    local path to template



388
389
390
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 388

def template_path
  @template_path
end

Class Method Details

.build(base = nil) { ... } ⇒ SparkleStruct

Execute given block within struct context

Parameters:

Yields:

  • block to execute

Returns:



119
120
121
122
123
124
125
126
127
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 119

def build(base = nil, &block)
  if base || block.nil?
    struct = base || SparkleStruct.new
    struct.instance_exec(&block)
    struct
  else
    block
  end
end

.builtin_insert(dynamic_name, struct, *args, &block) ⇒ SparkleStruct

Insert a builtin dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 311

def builtin_insert(dynamic_name, struct, *args, &block)
  if struct._self.provider_resources && lookup_key = struct._self.provider_resources.registry_key(dynamic_name)
    _name, _config = *args
    _config ||= {}
    __t_hashish(_config)
    unless _name.is_a?(SparkleFormation::FunctionStruct)
      __t_stringish(_name)
      resource_name = [
        _name,
        _config.fetch(:resource_name_suffix, dynamic_name),
      ].compact.join("_").to_sym
    else
      resource_name = _name._root
    end
    _config.delete(:resource_name_suffix)
    new_resource = struct.resources.set!(resource_name)
    new_resource.type lookup_key
    properties = new_resource.properties
    config_keys = _config.keys.zip(_config.keys.map { |k| snake(k).to_s.tr("_", "") })
    struct._self.provider_resources.resource(dynamic_name, :properties).each do |prop_name|
      key = (config_keys.detect { |k| k.last == snake(prop_name).to_s.tr("_", "") } || []).first
      value = _config[key] if key
      if value
        if value.is_a?(Proc)
          properties.set!(prop_name, &value)
        else
          properties.set!(prop_name, value)
        end
      end
    end
    new_resource.instance_exec(&block) if block
    struct._self.provider_resources.resource_customizer(new_resource, lookup_key)
    new_resource
  end
end

.compile(path, *args) ⇒ Hashish, SparkleStruct

Compile file

Parameters:

  • path (String) —

    path to file

  • args (Object) —

    use :sparkle to return struct. provide Hash to pass through when compiling (=> {})

Returns:



97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 97

def compile(path, *args)
  opts = args.detect { |i| i.is_a?(Hash) } || {}
  unless path.is_a?(String) && File.file?(path.to_s)
    if spath = (opts.delete(:sparkle_path) || SparkleFormation.custom_paths[:sparkle_path])
      container = Sparkle.new(:root => spath)
      path = container.get(:template, path)[:path]
    end
  end
  formation = instance_eval(IO.read(path), path, 1)
  formation.template_path = path
  if args.delete(:sparkle)
    formation
  else
    formation.compile(opts)._dump
  end
end

.components_path=(path = nil) ⇒ String Also known as: components_path

Get/set path to component files

Parameters:

  • path (String) (defaults to: nil) —

    path to component files

Returns:

  • (String) —

    path to component files



56
57
58
59
60
61
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 56

def components_path=(path = nil)
  if path
    custom_paths[:components_directory] = path
  end
  custom_paths[:components_directory]
end

.custom_paths ⇒ Hashish

Returns custom paths.

Returns:

  • (Hashish) —

    custom paths



31
32
33
34
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 31

def custom_paths
  @_paths ||= SparkleStruct.hashish.new
  @_paths
end

.dynamic(name, args = {}) { ... } ⇒ TrueClass

Define and register new dynamic

Examples:

metadata describes dynamic parameters for _config hash:
:item_name => {:description => 'Defines item name', :type => 'String'}

Parameters:

  • name (String, Symbol) —

    name of dynamic

  • args (Hash) (defaults to: {}) —

    dynamic metadata

Options Hash (args):

  • :parameters (Hash) —

    description of _config parameters

Yields:

  • dynamic block

Returns:

  • (TrueClass) 


176
177
178
179
180
181
182
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 176

def dynamic(name, args = {}, &block)
  @dynamics ||= SparkleStruct.hashish.new
  dynamics[name] = SparkleStruct.hashish[
    :block, block, :args, SparkleStruct.hashish[args.map(&:to_a)]
  ]
  true
end

.dynamic_info(name) ⇒ Hashish Also known as: dynamic_information

Metadata for dynamic

Parameters:

  • name (String, Symbol) —

    dynamic name

Returns:

  • (Hashish) —

    metadata information



188
189
190
191
192
193
194
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 188

def dynamic_info(name)
  if dynamics[name]
    dynamics[name][:args] ||= SparkleStruct.hashish.new
  else
    raise KeyError.new("No dynamic registered with provided name (#{name})")
  end
end

.dynamics ⇒ Hashish

Returns loaded dynamics.

Returns:

  • (Hashish) —

    loaded dynamics



26
27
28
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 26

def dynamics
  @dynamics ||= SparkleStruct.hashish.new
end

.dynamics_path=(path = nil) ⇒ String Also known as: dynamics_path

Get/set path to dynamic files

Parameters:

  • path (String) (defaults to: nil) —

    path to dynamic files

Returns:

  • (String) —

    path to dynamic files



69
70
71
72
73
74
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 69

def dynamics_path=(path = nil)
  if path
    custom_paths[:dynamics_directory] = path
  end
  custom_paths[:dynamics_directory]
end

.from_hash(hash) ⇒ SparkleStruct

Note:

will do best effort on camel key auto discovery

Convert hash to SparkleStruct instance

Parameters:

  • hash (Hashish)

Returns:



352
353
354
355
356
357
358
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 352

def from_hash(hash)
  struct = SparkleStruct.new
  struct._camel_keys_set(:auto_discovery)
  struct._load(hash)
  struct._camel_keys_set(nil)
  struct
end

.insert(dynamic_name, struct, *args, &block) ⇒ SparkleStruct

Insert a dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 217

def insert(dynamic_name, struct, *args, &block)
  __t_stringish(dynamic_name)
  result = false
  begin
    opts = args.detect { |i| i.is_a?(Hash) } || {}
    dyn = struct._self.sparkle.get(:dynamic, dynamic_name, opts[:provider])
    opts = nil
    raise dyn if dyn.is_a?(Exception)
    dyn.monochrome.each do |dynamic_item|
      if result
        opts = args.detect { |i| i.is_a?(Hash) }
        if opts
          opts[:previous_layer_result] = result
        else
          args.push(:previous_layer_result => result)
        end
      end
      result = struct.instance_exec(*args, &dynamic_item[:block])
    end
    if block_given?
      result.instance_exec(&block)
    end
  rescue Error::NotFound::Dynamic
    result = builtin_insert(dynamic_name, struct, *args, &block)
    unless result
      message = "Failed to locate requested dynamic block for insertion: #{dynamic_name} " \
      "(valid: #{struct._self.sparkle.dynamics.fetch(struct._self.sparkle.provider, {}).keys.sort.join(", ")})"
      if struct._self.provider_resources && struct._self.provider_resources.registry.keys.size > 1
        t_name = struct._self.provider_resources.registry.keys.first
        valid_t_name = Bogo::Utility.snake(
          t_name.split(
            struct._self.provider_resources.resource_type_splitter
          ).join("_")
        )
        message << "\nBuiltin dynamics pattern `#{t_name}` -> `:#{Bogo::Utility.snake(valid_t_name)}`"
      end
      raise message
    end
  end
  result
end

.load_component(path) ⇒ SparkleStruct

Load component

Parameters:

  • path (String) —

    path to component

Returns:



133
134
135
136
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 133

def load_component(path)
  instance_eval(IO.read(path), path, 1)
  @_struct
end

.load_dynamics!(directory) ⇒ TrueClass

Load all dynamics within a directory

Parameters:

  • directory (String)

Returns:

  • (TrueClass) 


142
143
144
145
146
147
148
149
150
151
152
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 142

def load_dynamics!(directory)
  @loaded_dynamics ||= []
  Dir.glob(File.join(directory, "*.rb")).each do |dyn|
    dyn = File.expand_path(dyn)
    next if @loaded_dynamics.include?(dyn)
    instance_eval(IO.read(dyn), dyn, 1)
    @loaded_dynamics << dyn
  end
  @loaded_dynamics.uniq!
  true
end

.load_registry!(directory) ⇒ TrueClass

Load all registry entries within a directory

Parameters:

  • directory (String)

Returns:

  • (TrueClass) 


158
159
160
161
162
163
164
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 158

def load_registry!(directory)
  Dir.glob(File.join(directory, "*.rb")).each do |reg|
    reg = File.expand_path(reg)
    require reg
  end
  true
end

.nest(template, struct, *args, &block) ⇒ SparkleStruct

Note:

if symbol is provided for template, double underscores will be used for directory separator and dashes will match underscores

Nest a template into a context

Parameters:

  • template (String, Symbol) —

    template to nest

  • struct (SparkleStruct) —

    context for nesting

  • args (String, Symbol) —

    stringified and underscore joined for name

Returns:



267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 267

def nest(template, struct, *args, &block)
  options = args.detect { |i| i.is_a?(Hash) }
  if options
    args.delete(options)
  else
    options = {}
  end
  [template, *args].compact.each do |item|
    __t_stringish(item)
  end
  to_nest = struct._self.sparkle.get(:template, template, options[:provider])
  resource_name = template.to_s.gsub("__", "_")
  unless args.empty?
    resource_name = [
      options.delete(:overwrite_name) ? nil : resource_name,
      args.map { |a| Bogo::Utility.snake(a) }.join("_"),
    ].flatten.compact.join("_").to_sym
  end
  resource_name = struct._process_key(resource_name.to_sym)
  nested_template = compile(to_nest[:path], :sparkle)
  nested_template.parent = struct._self
  nested_template.name = resource_name
  if options[:parameters]
    nested_template.compile_state = options[:parameters]
  end
  unless struct._self.sparkle.empty?
    nested_template.sparkle.apply(struct._self.sparkle)
  end
  nested_resource = struct.dynamic!(
    struct._self.stack_resource_type,
    resource_name,
    {:resource_name_suffix => nil},
    &block
  )
  nested_resource.properties.stack nested_template
  nested_resource
end

.registry(registry_name, struct, *args) ⇒ SparkleStruct

Insert a dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



204
205
206
207
208
209
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 204

def registry(registry_name, struct, *args)
  __t_stringish(registry_name)
  opts = args.detect { |item| item.is_a?(Hash) } || {}
  reg = struct._self.sparkle.get(:registry, registry_name, opts[:provider])
  struct.instance_exec(*args, &reg[:block])
end

.registry_path=(path = nil) ⇒ String Also known as: registry_path

Get/set path to registry files

Parameters:

  • path (String) (defaults to: nil) —

    path to registry files

Returns:

  • (String) —

    path to registry files



82
83
84
85
86
87
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 82

def registry_path=(path = nil)
  if path
    custom_paths[:registry_directory] = path
  end
  custom_paths[:registry_directory]
end

.sparkle_path=(path = nil) ⇒ String Also known as: sparkle_path

Get/set path to sparkle directory

Parameters:

  • path (String) (defaults to: nil) —

    path to directory

Returns:

  • (String) —

    path to directory



40
41
42
43
44
45
46
47
48
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 40

def sparkle_path=(path = nil)
  if path
    custom_paths[:sparkle_path] = path
    custom_paths[:components_directory] = File.join(path, "components")
    custom_paths[:dynamics_directory] = File.join(path, "dynamics")
    custom_paths[:registry_directory] = File.join(path, "registry")
  end
  custom_paths[:sparkle_path]
end

Instance Method Details

#apply_deep_nesting(*args) {|stack, resource, s_name| ... } ⇒ SparkleFormation::SparkleStruct

Apply deeply nested stacks. This is the new nesting approach and does not bubble parameters up to the root stack. Parameters are isolated to the stack resource itself and output mapping is automatically applied.

Yield Parameters:

  • stack (SparkleFormation) —

    stack instance

  • resource (AttributeStruct) —

    the stack resource

  • s_name (String) —

    stack resource name

Yield Returns:

  • (Hash) —

    key/values to be merged into resource properties

Returns:



864
865
866
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 864

def apply_deep_nesting(*args, &block)
  compile
end

#apply_nesting(*args, &block) ⇒ SparkleFormation::SparkleStruct

Note:

see specific version for expected block parameters

Apply nesting logic to stack

Parameters:

  • nest_type (Symbol) —

    values: :shallow, :deep (default: :deep)

Returns:



846
847
848
849
850
851
852
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 846

def apply_nesting(*args, &block)
  if args.include?(:shallow)
    apply_shallow_nesting(&block)
  else
    apply_deep_nesting(&block)
  end
end

#apply_shallow_nesting(*args) {|resource_name, stack| ... } ⇒ SparkleFormation::SparkleStruct

Apply shallow nesting. This style of nesting will bubble parameters up to the root stack. This type of nesting is the original and now deprecated, but remains for compat issues so any existing usage won’t be automatically busted.

Yield Parameters:

  • resource_name (String) —

    name of stack resource

  • stack (SparkleFormation) —

    nested stack

Yield Returns:

  • (String) —

    Remote URL storage for template

Returns:



925
926
927
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 925

def apply_shallow_nesting(*args, &block)
  compile
end

#block(block) ⇒ TrueClass Also known as: load_block

Add block to load order

Parameters:

  • block (Proc)

Returns:

  • (TrueClass) 


650
651
652
653
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 650

def block(block)
  composition.new_component(:__base__, &block)
  true
end

#collect_outputs(*args) ⇒ Smash<output_name:SparkleFormation>

Returns:

  • (Smash<output_name:SparkleFormation>) 


930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 930

def collect_outputs(*args)
  if args.include?(:force) || root?
    if !compile.outputs.nil? && !root?
      outputs = Smash[
        compile.outputs.keys!.zip(
          [self] * compile.outputs.keys!.size
        )
      ]
    else
      outputs = Smash.new
    end
    nested_stacks.each do |nested_stack|
      if nested_stack.is_a?(self.class) === true
        n_stack = nested_stack
      else
        n_stack = nested_stack._self
      end
      outputs = n_stack.collect_outputs(:force).merge(outputs)
    end
    outputs
  else
    root.collect_outputs(:force)
  end
end

#compile(args = {}) ⇒ SparkleStruct

Compile the formation

Parameters:

  • args (Hash) (defaults to: {})

Options Hash (args):

  • :state (Hash) —

    local state parameters

Returns:



692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 692

def compile(args = {})
  if args.key?(:state) && args.is_a?(Hash)
    @compile_state = args[:state].to_smash
    unmemoize(:compile)
  end
  memoize(:compile) do
    # NOTE: this is where we inject inherit or layering
    seed_self

    set_compile_time_parameters!
    if provider && SparkleStruct.const_defined?(camel(provider))
      struct_class = SparkleStruct.const_get(camel(provider))
      struct_name = [SparkleStruct.name, camel(provider)].join("::")
      struct_class.define_singleton_method(:name) { struct_name }
      struct_class.define_singleton_method(:to_s) { struct_name }
    else
      struct_class = SparkleStruct
    end
    if Resources.const_defined?(camel(provider))
      @provider_resources = Resources.const_get(camel(provider))
      provider_resources.load!
    end
    compiled = struct_class.new
    compiled._set_self(self)
    compiled._struct_class = struct_class
    if struct_class.const_defined?(:CAMEL_KEYS)
      compiled._camel_keys = struct_class.const_get(:CAMEL_KEYS)
    end
    if struct_class.const_defined?(:CAMEL_STYLE)
      compiled._camel_style = struct_class.const_get(:CAMEL_STYLE)
    end
    if compile_state
      compiled.set_state!(compile_state)
    end
    composition.each do |item|
      case item
      when Composition::Component
        if item.block
          self.class.build(compiled, &item.block)
        else
          sparkle.get(:component, item.key).monochrome.each do |component_block|
            self.class.build(compiled, &component_block[:block])
          end
        end
      when Composition::Override
        if item.args && !item.args.empty?
          compiled._set_state(item.args)
        end
        self.class.build(compiled, &item.block)
      end
    end
    if compile_state && !compile_state.empty?
      set_compiled_state(compiled)
    end
    compiled
  end
end

#compile_time_parameter_setter {|| ... } ⇒ Proc, NilClass

Get or set the compile time parameter setting block. If a get request the ancestor path will be searched to root

Yields:

  • block to set compile time parameters

Yield Parameters:

Returns:

  • (Proc, NilClass) 


608
609
610
611
612
613
614
615
616
617
618
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 608

def compile_time_parameter_setter(&block)
  if block
    @compile_time_parameter_setter = block
  else
    if @compile_time_parameter_setter
      @compile_time_parameter_setter
    else
      parent.nil? ? nil : parent.compile_time_parameter_setter
    end
  end
end

#dump ⇒ Hash

Returns dumped hash.

Returns:

  • (Hash) —

    dumped hash



974
975
976
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 974

def dump
  MultiJson.load(to_json)
end

#extract_template_data(template) ⇒ self

Extract information from given template and integrate with current instance

Parameters:

Returns:

  • (self) 


509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 509

def extract_template_data(template)
  # TODO: Should allow forced override here for cases like: openstack -> rackspace
  if provider != template.provider
    raise TypeError.new "This template `#{name}` cannot inherit template `#{template.name}`! Provider mismatch: `#{provider}` != `#{template.provider}`" # rubocop:disable Metrics/LineLength
  end
  template.sparkle.apply(sparkle)
  template.seed_self
  blacklisted_templates.replace(
    (blacklisted_templates + template.blacklisted_templates).map(&:to_s).uniq
  )
  @parameters = template.parameters.to_smash.deep_merge(parameters.to_smash)
  new_composition = Composition.new(self,
                                    :components => template.composition.composite,
                                    :overrides => composition.overrides)
  composition.components.each do |item|
    if item.respond_to?(:key) && item.key == "__base__"
      item.key = Smash.new(
        :template => name,
        :component => :__base__,
        :object_id => object_id,
      ).checksum.to_s
    end
    new_composition.add_component(item)
  end
  @composition = new_composition
  self
end

#extract_templates {|stack, resource, s_name| ... } ⇒ Object

Extract and process nested stacks

Yield Parameters:

  • stack (SparkleFormation) —

    stack instance

  • resource (AttributeStruct) —

    the stack resource

  • s_name (String) —

    stack resource name

Yield Returns:

  • (Hash) —

    key/values to be merged into resource properties



896
897
898
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 896

def extract_templates(&block)
  stack_template_extractor(nested_stacks(:with_resource, :with_name), &block)
end

#generate_policy ⇒ Hash

Generate policy for stack

Returns:

  • (Hash) 


837
838
839
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 837

def generate_policy
  Smash.new
end

#includes_policies?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns policies defined.

Returns:

  • (TrueClass, FalseClass) —

    policies defined



823
824
825
826
827
828
829
830
831
832
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 823

def includes_policies?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.any? do |r_name, r_value|
      !r_value.policy.nil?
    end
  end
end

#inherit_from(template_name) ⇒ self

Inhert template structure

Parameters:

  • template_name (String) —

    name of template to inherit

Returns:

  • (self) 


494
495
496
497
498
499
500
501
502
503
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 494

def inherit_from(template_name)
  if blacklisted_templates.map(&:to_s).include?(template_name.to_s)
    raise Error::CircularInheritance.new "Circular inheritance detected between templates `#{template_name}` and `#{name}`" # rubocop:disable Metrics/LineLength
  end
  template = self.class.compile(sparkle.get(:template, template_name)[:path], :sparkle)
  template.blacklisted_templates.replace(
    (template.blacklisted_templates + blacklisted_templates).map(&:to_s).uniq
  )
  extract_template_data(template)
end

#isolated_nests?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns includes only nested stacks.

Returns:

  • (TrueClass, FalseClass) —

    includes only nested stacks



811
812
813
814
815
816
817
818
819
820
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 811

def isolated_nests?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.all? do |r_name, r_value|
      stack_resource_type?(r_value.type)
    end
  end
end

#load(*args, &user_block) ⇒ self

Load components into instance

Parameters:

  • args (String, Symbol) —

    Symbol component names or String paths

Returns:

  • (self) 


661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 661

def load(*args, &user_block)
  args.each do |thing|
    if thing.is_a?(String)
      # NOTE: This needs to be deprecated and removed
      # TODO: deprecate
      key = File.basename(thing.to_s).sub(".rb", "")
      composition.new_component(key, &self.class.load_component(thing))
    else
      composition.new_component(thing)
    end
  end
  if block_given?
    block(user_block)
  end
  self
end

#make_output_available(output_name, outputs) ⇒ Object

Extract output to make available for stack parameter usage at the current depth

Parameters:

  • output_name (String) —

    name of output

  • outputs (Hash) —

    listing of outputs



886
887
888
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 886

def make_output_available(output_name, outputs)
  {}
end

#merge_previous! ⇒ self

Merge previous layer template structure

Returns:

  • (self) 


482
483
484
485
486
487
488
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 482

def merge_previous!
  my_index = sparkle.get(:template, name).spectrum.find_index do |item|
    item[:path] == template_path
  end
  template = self.class.compile(sparkle.get(:template, name).layer_at(my_index - 1)[:path], :sparkle)
  extract_template_data(template)
end

#nested?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns includes nested stacks.

Returns:

  • (TrueClass, FalseClass) —

    includes nested stacks



799
800
801
802
803
804
805
806
807
808
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 799

def nested?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.any? do |r_name, r_value|
      stack_resource_type?(r_value.type)
    end
  end
end

#nested_stacks(*args) ⇒ Array<SparkleFormation>

Returns:



777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 777

def nested_stacks(*args)
  if compile[:resources]
    compile.resources.keys!.map do |key|
      if stack_resource_type?(compile.resources[key].type)
        if !compile.resources[key].properties.stack.nil?
          result = [compile.resources[key].properties.stack]
          if args.include?(:with_resource)
            result.push(compile[:resources][key])
          end
          if args.include?(:with_name)
            result.push(key)
          end
          result.size == 1 ? result.first : result
        end
      end
    end.compact
  else
    []
  end
end

#output_matched?(p_name, output_names) ⇒ String, NilClass

Note:

will auto downcase name prior to comparison

Check if parameter name matches an output name

Parameters:

  • p_name (String, Symbol) —

    parameter name

  • output_names (Array<String>) —

    list of available outputs

Returns:

  • (String, NilClass) —

    matching output name



874
875
876
877
878
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 874

def output_matched?(p_name, output_names)
  output_names.detect do |o_name|
    Bogo::Utility.snake(o_name).tr("_", "") == Bogo::Utility.snake(p_name).tr("_", "")
  end
end

#overrides(args = {}) { ... } ⇒ Object

Registers block into overrides

Parameters:

  • args (Hash) (defaults to: {}) —

    optional arguments to provide state

Yields:

  • override block



682
683
684
685
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 682

def overrides(args = {}, &block)
  composition.new_override(args, &block)
  self
end

#recompile ⇒ SparkleStruct

Clear compiled stack if cached and perform compilation again

Returns:



771
772
773
774
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 771

def recompile
  unmemoize(:compile)
  compile
end

#remap_nested_parameters(template, parameters, stack_name, stack_resource, output_map) ⇒ TrueClass

Note:

if parameter has includes ‘StackUnique` a new parameter will be added to container stack and it will not use outputs

Extract parameters from nested stacks. Check for previous nested stack outputs that match parameter. If match, set parameter to use output. If no match, check container stack parameters for match. If match, set to use ref. If no match, add parameter to container stack parameters and set to use ref.

Parameters:

  • template (Hash) —

    template being processed

  • parameters (Hash) —

    top level parameter set being built

  • stack_name (String) —

    name of stack resource

  • stack_resource (Hash) —

    duplicate of stack resource contents

  • output_map (Hash) —

    mapping of output names to required stack output access

Returns:

  • (TrueClass) 


969
970
971
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 969

def remap_nested_parameters(template, parameters, stack_name, stack_resource, output_map)
  true
end

#root ⇒ SparkleFormation

Returns root stack.

Returns:



571
572
573
574
575
576
577
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 571

def root
  if parent
    parent.root
  else
    self
  end
end

#root? ⇒ TrueClass, FalseClass

Returns current stack is root.

Returns:

  • (TrueClass, FalseClass) —

    current stack is root



589
590
591
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 589

def root?
  root == self
end

#root_path ⇒ Array<SparkleFormation] path to root

Returns Array<SparkleFormation] path to root.

Returns:



580
581
582
583
584
585
586
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 580

def root_path
  if parent
    [*parent.root_path, self].compact
  else
    [self]
  end
end

#seed_self ⇒ self

Update underlying data structures based on inherit or layering behavior if defined for this template

Parameters:

  • options (Hash)

Returns:

  • (self) 


463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 463

def seed_self
  memoize(:seed) do
    options = @seed
    if options[:inherit] && options[:layering].to_s == "merge"
      raise ArgumentError.new "Cannot merge and inherit!"
    end
    if options[:inherit]
      inherit_from(options[:inherit])
    elsif options[:layering].to_s == "merge"
      merge_previous!
    end
    true
  end
  self
end

#set_compile_time_parameters! ⇒ Object

Set the compile time parameters for the stack if the setter proc is available



622
623
624
625
626
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 622

def set_compile_time_parameters!
  if compile_time_parameter_setter
    compile_time_parameter_setter.call(self)
  end
end

#set_compiled_state(compiled) ⇒ AttributeStruct

Set the current compile_state into the compiled result

Parameters:

  • compiled (AttributeStruct)

Returns:

  • (AttributeStruct) 


755
756
757
758
759
760
761
762
763
764
765
766
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 755

def set_compiled_state(compiled)
  storage_compile_state = Smash.new
  parameters.each do |param_key, param_config|
    if param_config.fetch(:type, "string").to_s.downcase.to_sym != :complex
      storage_compile_state[param_key] = compile_state[param_key]
    end
  end
  unless storage_compile_state.empty?
    compiled.outputs.compile_state.value MultiJson.dump(storage_compile_state)
  end
  compiled
end

#set_generation_parameters!(params) ⇒ Hash

Validation parameters used for template generation to ensure they are in the expected format

Parameters:

  • params (Hash) —

    parameter set

Returns:

  • (Hash) —

    parameter set



634
635
636
637
638
639
640
641
642
643
644
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 634

def set_generation_parameters!(params)
  params.each do |name, value|
    unless value.is_a?(Hash)
      raise TypeError.new("Expecting `Hash` type. Received `#{value.class}`")
    end
    if key = value.keys.detect { |k| !ALLOWED_GENERATION_PARAMETERS.include?(k.to_s) }
      raise ArgumentError.new("Invalid generation parameter key provided `#{key}`")
    end
  end
  params
end

#sparkle_dump ⇒ Hash

Returns dumped hash.

Returns:

  • (Hash) —

    dumped hash



979
980
981
982
983
984
985
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 979

def sparkle_dump
  MultiJson.load(
    MultiJson.dump(
      compile.sparkle_dump!
    )
  )
end

#stack_resource_type ⇒ String

Returns provider stack resource type.

Returns:

  • (String) —

    provider stack resource type



538
539
540
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 538

def stack_resource_type
  DEFAULT_STACK_RESOURCE
end

#stack_resource_type?(type) ⇒ TrueClass, FalseClass

Check if type is a registered stack type

Parameters:

  • type (String)

Returns:

  • (TrueClass, FalseClass) 


566
567
568
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 566

def stack_resource_type?(type)
  stack_resource_types.include?(type)
end

#stack_template_extractor(x_stacks, &block) ⇒ Object

Run the stack extraction

Parameters:



903
904
905
906
907
908
909
910
911
912
913
914
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 903

def stack_template_extractor(x_stacks, &block)
  x_stacks.each do |stack, resource, s_name|
    unless stack.nested_stacks.empty?
      stack_template_extractor(stack.nested_stacks(:with_resource, :with_name), &block)
    end
    resource.properties._delete(:stack)
    s_parent = resource.properties.stack
    stack.compile._parent(s_parent)
    resource.properties.set!(:stack, stack.compile)
    block.call(s_name, stack, resource)
  end
end

#to_json(*args) ⇒ String

Returns dumped hash JSON.

Returns:

  • (String) —

    dumped hash JSON



988
989
990
991
992
993
994
995
996
 
# File 'lib/sparkle_formation/sparkle_formation.rb', line 988

def to_json(*args)
  # NOTE: Ported in from batali
  # Prevent stupid conversion errors of
  # JSON::Ext::Generator::State into Hash
  args = args.map do |argument|
    argument.respond_to?(:to_h) ? argument.to_h : argument
  end
  MultiJson.dump(compile.dump!, *args)
end