Class: Blockbuster::ExtractionList

Inherits:
Object
  • Object
show all
Defined in:
lib/blockbuster/extraction_list.rb

Overview

generates an ordered collection of files to extract

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(comparator, configuration) ⇒ ExtractionList

Returns a new instance of ExtractionList.



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# File 'lib/blockbuster/extraction_list.rb', line 6

def initialize(comparator, configuration)
  @configuration = configuration
  @comparator    = comparator

  list = [master]
  list << deltas if configuration.deltas_enabled?

  @files = list.flatten
end

Instance Attribute Details

#configuration ⇒ Object (readonly)

Returns the value of attribute configuration.



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# File 'lib/blockbuster/extraction_list.rb', line 4

def configuration
  @configuration
end

#files ⇒ Object (readonly)

Returns the value of attribute files.



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# File 'lib/blockbuster/extraction_list.rb', line 4

def files
  @files
end

Instance Method Details

#current_delta ⇒ Object 



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# File 'lib/blockbuster/extraction_list.rb', line 16

def current_delta
  deltas.find(&:current?)
end

#deltas ⇒ Object 



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# File 'lib/blockbuster/extraction_list.rb', line 20

def deltas
  @deltas ||= Delta.initialize_for_each(@comparator, configuration)
end

#extract_cassettes ⇒ Object 



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# File 'lib/blockbuster/extraction_list.rb', line 24

def extract_cassettes
  files.map(&:extract_cassettes)
end

#master ⇒ Object 



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# File 'lib/blockbuster/extraction_list.rb', line 28

def master
  @master ||= Master.new(@comparator, configuration)
end

#primary ⇒ Object

determines what file representation to return for writing to

  1. master when deltas are disabled

  2. master when master does not exist. This handles two scenarios:

    • master does not exist (if this happens, we should always regenerate master)

    • we want to regenerate master (this assumes some other mechanism is responsible for deleting master to make this work)

  3. current_delta



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# File 'lib/blockbuster/extraction_list.rb', line 42

def primary
  return master if configuration.deltas_disabled?

  return master unless File.exist?(master.file_path)

  current_delta
end