Class: Procession::Process

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

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Process

Returns a new instance of Process.



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# File 'lib/procession/process.rb', line 5

def initialize(options)
  @command = options.delete(:command)
  @await = options.delete(:await)
  @working_dir = options.delete(:working_dir)
  @environment = options.delete(:environment)
  @inherit_output = options.delete(:inherit_output)
end

Instance Method Details

#start ⇒ Object 



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# File 'lib/procession/process.rb', line 13

def start
  args = @command.split(' ')
  @proc = ChildProcess.build(*args)

  setup_cwd
  setup_environment

  r, w = IO.pipe

  @proc.io.stdout = @proc.io.stderr = w
  @proc.leader = true
  @proc.start
  w.close

  all_output = ""

  begin
    started = false
    until started
      partial = r.readpartial(8192)
      puts partial if @inherit_output
      all_output << partial
      if (all_output =~ @await)
        started = true
      end
    end
  rescue EOFError
    raise ProcessExitedError.new "The app process exited\nSTDOUT:\n#{all_output}"
  end

  Thread.new do
    while true
      partial = r.readpartial(8192)
      puts partial if @inherit_output
    end
  end

  at_exit do
    @proc.stop
  end

  @proc.io.inherit!

  @proc
end