Class: FHIR::Generator::IGLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/fhir_models/generator/ig_loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ig_file_name) ⇒ IGLoader

Returns a new instance of IGLoader.



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# File 'lib/fhir_models/generator/ig_loader.rb', line 11

def initialize(ig_file_name)
  self.ig_file_name = ig_file_name
end

Instance Attribute Details

#ig_file_name ⇒ Object

Returns the value of attribute ig_file_name.



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# File 'lib/fhir_models/generator/ig_loader.rb', line 9

def ig_file_name
  @ig_file_name
end

Instance Method Details

#excluded_files ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 19

def excluded_files
  @excluded_files ||= []
end

#ig_resources ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 15

def ig_resources
  @ig_resources ||= IGResources.new
end

#load(show_summary: false) ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 23

def load(show_summary: false)
  load_excluded_files
  load_ig(show_summary)
  load_supplement_resources
end

#load_excluded_files ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 29

def load_excluded_files
  ig_directory = ig_file_name.chomp('.tgz')

  return ig_resources unless File.exist? ig_directory

  file_name = File.join(ig_directory, 'package_exclude', 'excluded_files.json')

  @excluded_files = JSON.parse(File.read(file_name))
end

#load_ig(show_summary) ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 39

def load_ig(show_summary)
  tar = Gem::Package::TarReader.new(
    Zlib::GzipReader.open(ig_file_name)
  )

  tar.each do |entry|
    next if entry.directory?

    file_name = entry.full_name.split('/').last
    next unless file_name.end_with? '.json'
    next if excluded_files.include?(file_name)

    begin
      if file_name == 'package.json'
        resource = JSON.parse(entry.read)
        ig_resources.ig_metadata = IGMetadata.new(resource)
        puts "Extract FHIR Package version #{ig_resources.ig_metadata.version}" if show_summary
        next
      end

      next unless file_name.start_with?('CodeSystem', 'SearchParameter', 'StructureDefinition', 'ValueSet')

      resource = JSON.parse(entry.read)
      next if resource.empty?
    rescue StandardError
      puts "Cannot read and parse JSON file #{file_name}."
      next
    end

    ig_resources.add(resource)
  end

  if show_summary
    puts "Extracted Primitve Types: #{ig_resources.primitive_types&.count}"
    puts "Extracted Complex Types: #{ig_resources.complex_types&.count}"
    puts "Extracted Resource Definitions: #{ig_resources.resource_definitions&.count}"
    puts "Extracted Extension Definitions: #{ig_resources.extension_definitions&.count}"
    puts "Extracted Profiles: #{ig_resources.profiles&.count}"
    puts "Extracted Value Sets: #{ig_resources.get_value_sets&.count}"
    puts "Extracted Code Systems: #{ig_resources.get_code_systems&.count}"
    puts "Extracted Search Parameters: #{ig_resources.get_search_parameters&.count}"
  end

  ig_resources
end

#load_supplement_resources ⇒ Object 



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# File 'lib/fhir_models/generator/ig_loader.rb', line 85

def load_supplement_resources
  ig_directory = ig_file_name.chomp('.tgz')

  return ig_resources unless File.exist? ig_directory

  Dir.glob(File.join(ig_directory, 'package_supplement', '*.json')).each do |file_path|
    begin
      resource = JSON.parse(File.read(file_path))
      next if resource.empty?
    rescue StandardError
      file_name = file_path.split('/').last
      puts "Cannot read and parse JSON file #{file_name}."
      next
    end

    ig_resources.add(resource, break_bundle: true)
  end

  ig_resources
end