Class: Log_Wrapper

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

Instance Method Summary collapse

Constructor Details

#initialize(logdev = 'log.txt', shift_age = 0, shift_size = 1048576) ⇒ Log_Wrapper

Returns a new instance of Log_Wrapper.



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# File 'lib/log_wrapper.rb', line 8

def initialize(logdev = 'log.txt', shift_age = 0, shift_size = 1048576)
	@log_file = logdev
	@log = Logger.new(@log_file, shift_age, shift_size)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

expects a message (arg) and a hash (arg) if the hash includes a payload (and no explicit guid), the payload will be probed for a guid



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# File 'lib/log_wrapper.rb', line 15

def method_missing(method, *args, &block)

exception = nil

message, called_by, guid, hash = get_parameters(args)
if block_given?
	result, exception = execute_block(&block)
	hash.merge!(result)
end

@log.__send__(method, called_by) do
	"| #{guid} | #{message} | #{(hash ? hash.to_json : '')}"
end

p message unless method == :debug

raise exception if exception

end

Instance Method Details

#grep(search) ⇒ Object 



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# File 'lib/log_wrapper.rb', line 35

def grep(search)
	open(@log_file) do |f| f.grep(/#{search}/) do |e|
			severity, date, pid, label, app, message, guid, actual_message, json = nil
			e.gsub(/([\w]+),\s+\[([^\]\s]+)\s+#([^\]]+)\]\s+(\w+)\s+--\s+(.+?):\s+\|\s(.+)/) do |match|
				severity, date, pid, label, app, message = $1, Time.parse($2), $3, $4, $5, $6
			message.gsub(/([\w-]*)\s\|\s(.*)\s\|\s(.*)/) do |parts|
				guid, actual_message, payload = $1, $2, $3
				json = JSON.parse(payload) if payload =~ /{.+}/
			end
		end
		times, payload = nil
		if json
			times   = json['times']
			payload = json['payload']
		end
		{
			'severity' 					=> severity,
			'date'							=> date,
			'pid'								=> pid,
			'label'							=> label,
			'app'								=> app,
			'message'						=> actual_message,
			'guid'							=> guid,
			'times'							=> times,
			'payload'						=> payload
		}
		end
	end
end

#web_grep(guid) ⇒ Object 



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# File 'lib/log_wrapper.rb', line 65

def web_grep(guid)

  log_lines, start_time, end_time, duration  = nil
  if guid && guid.length>0
    log_lines               = grep(guid)
    user, system, elapsed   = 0.0, 0.0, 0.0
    slowest_duration        = -1.0
    timings                 = false

    if log_lines.length > 0
      start_time = end_time = log_lines[0]['date']
      log_lines.each do |e|
        date        = e['date']
        start_time  = date if date < start_time
        end_time    = date if date > end_time
        if e['times']
          user    += e['times']['user']
          system  += e['times']['system']
          elapsed += e['times']['elapsed']
          timings  = true
          slowest_duration = e['times']['elapsed'] if e['times']['elapsed'] > slowest_duration
        end
      end
    end

  end

  t = {}
  if timings
    t['times'] = { 'user' => user, 'system' => system, 'elapsed' => elapsed }
  end

  duration = (end_time - start_time) if end_time

  t.merge(
            {
              'guid'             => guid,
              'log_lines'        => log_lines,
              'start_time'       => start_time,
              'end_time'         => end_time,
              'duration'         => duration,
              'slowest_duration' => slowest_duration
            }
          )

end