Class: Lexicon::Common::Production::DatasourceLoader

Inherits:
Object
  • Object
show all
Includes:
Mixin::SchemaNamer
Defined in:
lib/lexicon/common/production/datasource_loader.rb

Instance Method Summary collapse

Constructor Details

#initialize(shell:, database_factory:, file_loader:, database_url:) ⇒ DatasourceLoader

Returns a new instance of DatasourceLoader.

Parameters:



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# File 'lib/lexicon/common/production/datasource_loader.rb', line 12

def initialize(shell:, database_factory:, file_loader:, database_url:)
  @shell = shell
  @database_factory = database_factory
  @file_loader = file_loader
  @database_url = database_url
end

Instance Method Details

#load_package(package, only: nil, without: []) ⇒ Object

Parameters:

  • package (Package::Package)
  • only (Array<String>, nil) (defaults to: nil)
  • without (Array<String>) (defaults to: []) —

    If nil, all datasets are loaded. If present, only listed datasets are loaded. Structures are ALWAYS loaded



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# File 'lib/lexicon/common/production/datasource_loader.rb', line 25

def load_package(package, only: nil, without: [])
  file_sets = if only.nil?
                package.file_sets.select(&:data_path)
              else
                sets_by_name = package.file_sets.map { |fs| [fs.name, fs] }.to_h

                missing, present = only.map { |name| [name, sets_by_name.fetch(name, nil)] }
                                       .partition { |(_name, value)| value.nil? }

                if missing.any?
                  puts "[ NOK ] Datasources #{missing.map(&:first).join(', ')} don't exist!"
                  return
                end

                present.map(&:second)
                       .select(&:data_path)
              end

  file_sets = file_sets.reject { |fs| without.include?(fs.name) }

  load_structure_files(package.structure_files, schema: version_to_schema(package.version))

  file_sets.map do |fs|
    Thread.new do
      puts "Loading #{fs.name}"
      file_loader.load_file(package.data_path(fs))
      puts '[  OK ] '.green + fs.name.yellow
    end
  end.each(&:join)

  lock_tables(package)
end