Method: TimeFile#read

Defined in:
lib/vcseif/utils/time_file.rb

#read ⇒ Object 



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# File 'lib/vcseif/utils/time_file.rb', line 30

def read()
  %{
     Returns the time stored in the file as an epoch seconds value
     or a default value of the time 5 minutes ago (again in epoch seconds form).
   }
  # default to 5 minutes ago if file non-existent or empty
  default = Time.now - (5 * 60)
  last_run_timestamp = nil

  if exists?
    begin
      File.open(@filename, "r") do |file|
        line = file.gets
        if !line.nil? and !line.empty?
          line = line.strip
          if line =~ /\d+.*T\d+:\d+:\d+.\d+/  # in old-style ISO8601 format
            last_run_timestamp = Time.strptime(line, ISO8601_FORMAT)
          else
            begin
              last_run_timestamp = Time.strptime(line, STD_STRPTIME_FMT)
            rescue => ex
              problem = "Invalid format for timefile entry: #{line}"
              action  = "reverting to default of #{last_run_timestamp}"
              @log.error("%s, %s" % [problem, action])
            end
          end
        end
      end
    rescue => ex
      problem = "Could not read time entry from #{@filename}"
      action  = "rewriting time file with default value"
      @log.error("%s, %s" % [problem, action])
      write(last_run_timestamp)
    end
  end

  last_run_timestamp = default if last_run_timestamp.nil?
  return last_run_timestamp
end