Class: Carrousel::Runner

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

Instance Method Summary collapse

Constructor Details

#initialize(args, opts = {}) ⇒ Runner

Returns a new instance of Runner.

Raises:

  • (ArgumentError) 


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# File 'lib/carrousel.rb', line 16

def initialize(args, opts = {})
  @args = args
  @opts = opts
  @incomplete = []
  @complete = []

  unless @opts[:listfile].nil?
    lines = File.readlines(@opts[:listfile]).map(&:strip)
    @incomplete.concat(lines)
  end
  @incomplete.concat(@args)

  @opts[:statusfile] ||= generate_status_filename
  open_status_file

  p self if @opts[:debug]

  raise ArgumentError.new("Command option is required") if @opts[:command].nil?
end

Instance Method Details

#run ⇒ Object

def initialize



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# File 'lib/carrousel.rb', line 36

def run
  # Loop over everything in the list. Run the command. If the command fails
  # then we move the item to the bottom of the list. If the command
  # succeeds, we move the item to the completed list. If we are interrupted
  # in the middle of processing, we ensure that the item is saved in the
  # normal list, and we ensure that we write out the completed list.
  until @incomplete.empty?
    begin
      command = [@opts[:command], @incomplete.first].join(' ')
      warn "Executing command: #{command}" if @opts[:verbose]
      resp = system(command)
      warn "System response: #{resp}" if @opts[:verbose]
      if resp
        @complete << @incomplete.delete(@incomplete.first)
      else
        @incomplete.rotate!
      end
    ensure
      save_status_file
    end

    if @opts[:delay] > 0
      warn "Sleeping for #{@opts[:delay]} seconds" if @opts[:verbose]
      sleep @opts[:delay]
    end
  end # until @incomplete.empty?
end