Class: Cron

Inherits:
Object
  • Object
show all
Defined in:
lib/cl_wiki/tools/cron.reminders.rb

Instance Method Summary collapse

Constructor Details

#initialize(crontabFilename, verbose = false) ⇒ Cron

Returns a new instance of Cron.



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 142

def initialize(crontabFilename,verbose=false)
  @crontabAge = 0
  @lines = 0
  @verbose = verbose
  @crontabFilename = crontabFilename
end

Instance Method Details

#inRange(value, range) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 37

def inRange(value,range)
  range.split(/,/).each { | subrange |
    low, high = subrange.split(/\-/)
    low = low.to_i
    if high
      high = high.to_i
      return true if value >= low and value <= high;
    else
      return true if low == value;
    end
  }
  false
end

#loadCrontab ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 24

def loadCrontab()
  File.open(@crontabFilename, "r") do |f|
    @crontab = []
    f.each_line { | line |
      line.chomp!
      next if (line =~ /^$/)  # skip blank lines
      next if (line =~ /^\#/)  # skip comments
      @crontab << line.split(/ +/,6)
    }
  end
  @crontabAge = File.mtime(@crontabFilename)
end

#nth_wday_of_month?(nth) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 51

def nth_wday_of_month?(nth)
  require 'date'

  all_wday_in_month = []
  today = Date.today
  (-5..5).each do |i|
    a_date = (today + (i*7))
    all_wday_in_month << a_date if a_date.mon == today.mon
  end
  all_wday_in_month[nth - 1] == today
end

#parse_tcommand_for_wiki_pages(tcommand) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 121

def parse_tcommand_for_wiki_pages(tcommand)
  content = ''
  content << tcommand + "\n\n"
  formatter = ClWikiPageFormatter.new(tcommand, '/UrgentToDo')
  formatter.formatLinks do |word|
    if formatter.isWikiName?(word)
      wiki_page_name = word
      ref_page_full_name = formatter.expand_path(wiki_page_name, '/UrgentToDo')
      puts ref_page_full_name
      if ClWikiPage.page_exists?(ref_page_full_name)
        ref_page = ClWikiPage.new(ref_page_full_name, $wiki_path)
        ref_page.read_raw_content
        content << ref_page_full_name << "\n" <<
          ('-' * ref_page_full_name.length) << "\n\n" <<
          ref_page.raw_content << "\n"
      end
    end
  end
  content
end

#run ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 162

def run()
  if @verbose
    print "\n\nDO NOT CLOSE THIS WINDOW!\n\n"
  end
  while (true)
    if @crontabAge != File.mtime(@crontabFilename)
      loadCrontab()
    end

    if $debug
      testAndLaunch(Time.now)
    else
      # we do this to strip the seconds off for pure minute comparisons
      now = str_to_time(time_to_str(Time.now))

      lastrun_fn = 'cron.reminders.lastrun'
      if File.exists?(lastrun_fn)
        lastruntime = File.readlines(lastrun_fn)[0]
        if lastruntime.nil?
          File.delete(lastrun_fn)
          next
        end
        lastrun = str_to_time(lastruntime.chomp)
      else
        # default to starting a week ago, that should be enough catchup
        lastrun = now - (60 * 60 * 24 * 7)
      end
      nextrun = lastrun + (60)
      catchup = false
      if nextrun < now
        catchup = true
        time_do = nextrun
      elsif nextrun == now
        time_do = now
      else
        time_do = nil
      end
      if time_do
        puts 'catching up ' + time_to_str(time_do) if catchup
        #puts 'doing ' + time_to_str(time_do) if @verbose
        testAndLaunch(time_do)
        File.open(lastrun_fn, 'w') do |f| f.puts time_to_str(time_do) end
      end
      sleep (60) if !catchup
    end
    break if $debug
  end
end

#str_to_time(str) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 149

def str_to_time(str)
  begin
    Time.local(*([ParseDate.parsedate(str)[0..4], 0].flatten))
  rescue => e
    puts(str.inspect)
    raise e
  end
end

#testAndLaunch(now) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 72

def testAndLaunch(now)
  @crontab.each { | task |
    tmin, thour, tmonthday, tmonth, tweekday, tcommand = task
    launch = false

    # Launch this month of the year?
    if tmonth.eql?("*") || inRange(now.mon,tmonth)
      launch = true
    end

    # Launch this day of the month?
    if launch && !tmonthday.eql?("*") &&
      !inRange(now.mday,tmonthday)
      launch = false
    end

    # Launch this day of the week?
    if launch && !tweekday.eql?("*") &&
      !wday_in_range(now.wday, tweekday)
      launch = false
    end

    # Launch this hour of the day?
    if launch && !thour.eql?("*") &&
      !inRange(now.hour,thour)
      launch = false
    end

    # Launch this minute of the hour?
    if launch && !tmin.eql?("*") &&
      !inRange(now.min,tmin)
      launch = false;
    end

    if launch || $debug
      subj = "[rem] " + tcommand.gsub(/_/, ' ')
      body = time_to_str(now) + "\n" + parse_tcommand_for_wiki_pages(tcommand) + "\n" +
             "\n" +
             "http://localhost/clwiki/clwikicgi.rb?page=/UrgentToDo"
      to = '[email protected]'
      msg_id = "#{subj.scan(/[A-Za-z0-9]/).to_s}@clabs.org"
      do_sendmail(to, '[email protected]', subj, body, msg_id)
      puts 'sent ' + subj + "\n" +
        ('-' * (subj.length + 5)) + "\n" +
        body + "\n" if @verbose
    end
  }
end

#time_to_str(time) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 158

def time_to_str(time)
  time.strftime("%m/%d/%Y %H:%M")
end

#wday_in_range(current_wday, tweekday) ⇒ Object 



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# File 'lib/cl_wiki/tools/cron.reminders.rb', line 63

def wday_in_range(current_wday, tweekday)
  tweekday, nth_wday = tweekday.split('/')
  result = inRange(current_wday, tweekday)
  if result && nth_wday
    result = nth_wday_of_month?(nth_wday.to_i)
  end
  result
end