Method: PgSync::Sync#in_parallel

Defined in:
lib/pgsync/sync.rb

#in_parallel(tables, first_schema:, &block) ⇒ Object 



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# File 'lib/pgsync/sync.rb', line 158

def in_parallel(tables, first_schema:, &block)
  spinners = TTY::Spinner::Multi.new(format: :dots)
  item_spinners = {}

  start = lambda do |item, i|
    table, opts = item
    message = String.new(":spinner ")
    message << table.sub("#{first_schema}.", "")
    # maybe output later
    # message << " #{opts[:sql]}" if opts[:sql]
     = spinners.register(message)
    .auto_spin
    item_spinners[item] = 
  end

  failed_tables = []

  finish = lambda do |item, i, result|
     = item_spinners[item]
    table_name = item.first.sub("#{first_schema}.", "")

    if result[:status] == "success"
      .success(display_message(result))
    else
      # TODO add option to fail fast
      .error(display_message(result))
      failed_tables << table_name
      fail_sync(failed_tables) if @options[:fail_fast]
    end

    unless .send(:tty?)
      status = result[:status] == "success" ? "✔" : "✖"
      log [status, table_name, display_message(result)].compact.join(" ")
    end
  end

  options = {start: start, finish: finish}
  if @options[:debug] || @options[:in_batches]
    options[:in_processes] = 0
  else
    options[:in_threads] = 4 if windows?
  end

  # could try to use `raise Parallel::Kill` to fail faster with --fail-fast
  # see `fast_faster` branch
  # however, need to make sure connections are cleaned up properly
  Parallel.each(tables, **options, &block)

  fail_sync(failed_tables) if failed_tables.any?
end