log_parse.rb

require 'date'

# The goal of this script is to identify log lines with a long time interval 
# between log lines. Tune this by changing $seconds_between_log_lines

$seconds_between_log_lines = 4

$timestamp_regex = /\d+\-\d+\-\d+ \d+:\d+:\d+\.\d+/

def get_time(log_line)
	if has_timestamp?(log_line)
		time = DateTime.parse(log_line.scan($timestamp_regex)[0])
		time.strftime('%s').to_i
	else
		0
	end
end

def has_timestamp?(log_line)
	!log_line.scan($timestamp_regex)[0].nil?
end


current_line = nil
previous_line = nil

IO.foreach("uaa.log") do |x|
	next unless has_timestamp?(x)

	if previous_line.nil?
		previous_line = x
	else
		previous_line = current_line
	end

	current_line = x

	if (get_time(previous_line) - get_time(current_line)).abs > $seconds_between_log_lines
		puts '-------------'
		print previous_line
		print current_line
	end
end