Class: FakeSQS::Daemonize

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Daemonize

Returns a new instance of Daemonize.



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# File 'lib/fake_sqs/daemonize.rb', line 6

def initialize(options)
  @pid = options.fetch(:pid) {
    warn "No PID file specified while daemonizing!"
    exit 1
  }
end

Instance Attribute Details

#pid ⇒ Object (readonly)

Returns the value of attribute pid.



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# File 'lib/fake_sqs/daemonize.rb', line 4

def pid
  @pid
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/fake_sqs/daemonize.rb', line 13

def call
  Process.daemon(true, true)

  if File.exist?(pid)
    existing_pid = File.open(pid, 'r').read.chomp.to_i
    running = Process.getpgid(existing_pid) rescue false
    if running
      warn "Error, Process #{existing_pid} already running"
      exit 1
    else
      warn "Cleaning up stale pid at #{pid}"
    end
  end
  File.open(pid, 'w') { |f| f.write(Process.pid) }
end