wait_for_lock

in chefctl/src/chefctl.rb [745:776]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    def wait_for_lock(timeout = -1)
      
      
      
      endtime = Time.now + timeout
      open_for_writing = false
      loop do
        unless open_for_writing
          begin
            @lock[:fd] = File.open(@lock[:file], 'a+')
            open_for_writing = true
          rescue Errno::EACCES
            
            
            open_for_writing = false
          end
        end

        if open_for_writing
          acquired = @lock[:fd].flock(File::LOCK_EX | File::LOCK_NB)
          return true if acquired
        end

        if Time.now >= endtime
          @lock[:fd].close if open_for_writing
          return false
        else
          sleep 2
        end
      end
    end