Module: Flags

Defined in:
lib/city_watch/util/flags.rb

Instance Method Summary collapse

Instance Method Details

#clear_flag(name) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 10

def clear_flag(name)
	if get_flag(name)
		flag_flapped name, :off
		CityWatch.redis.setbit "#{CityWatch.config[:prefix]}::#{host}::#{self.name}::flags", flag_position(name), 0
	end
end

#flag_flapped(name, new_val) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 17

def flag_flapped(name,new_val)
	puts "Flag flipped: #{name} -> #{new_val}" if CityWatch.debug?
end

#flag_map ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 40

def flag_map
	CityWatch.redis.lrange flag_map_key, 0, -1
end

#flag_map_key ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 36

def flag_map_key
	"#{CityWatch.config[:prefix]}::#{self.name}::flag_map"
end

#flag_position(name) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 44

def flag_position(name)
	if (map = flag_map) && map.include?(name.to_s)
		map.index(name.to_s)
	else
		new_flag(name)
	end
end

#get_flag(name, host = host) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 21

def get_flag(name,host=host)
	@host = host
	CityWatch.redis.getbit("#{CityWatch.config[:prefix]}::#{host}::#{self.name}::flags", flag_position(name)) == 1 ? true : false
end

#get_flags(host = host) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 26

def get_flags(host=host)
	@host = host
	out = []
	map = flag_map
	map.each_index do |idx|
		out << map[idx] if get_flag(map[idx])
	end
	out
end

#new_flag(name) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 52

def new_flag(name)
	CityWatch.redis.rpush(flag_map_key, name) - 1
end

#set_flag(name) ⇒ Object 



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# File 'lib/city_watch/util/flags.rb', line 3

def set_flag(name)
	unless get_flag(name)
		flag_flapped name, :on
		CityWatch.redis.setbit "#{CityWatch.config[:prefix]}::#{host}::#{self.name}::flags", flag_position(name), 1
	end
end