fix missing import in generator, expand networks to ips in jobs and init work on a generic checker with shared dict and redis support

lua/checker.lua

@@ -0,0 +1,48 @@
+local M		= {}
+local redis	= require "resty.redis"
+
+function M.new(self, name, data_dict, redis_client, type)
+	return selfmetatable({
+		__name = name,
+		__data_dict = data_dict,
+		__redis_client = redis_client,
+		__type = type
+	})
+end
+
+function M.check(self, data) :
+	-- without redis
+	if self.__data_dict ~= nil and redis_client == nil then
+		if self.__type == "simple" then
+			local value, flags = self.__data_dict:get(data)
+			return ~= nil
+		else if self.__type == "match" then
+			local patterns = self.__data_dict:get_keys(0)
+			for i, pattern in ipairs(patterns) do
+				if string.match(data, pattern) then
+					return true
+				end
+			end
+			return false
+		end
+
+	-- with redis
+	else if data_dict == nil and redis_client ~= nil then
+		if self.__type == "simple" then
+			local res, err = self.__redis_client:get(self.__name .. "_" .. data)
+			return res and res ~= ngx.null
+		else if self.__type == "match" then
+			local patterns = self.__redis_client:keys(self.__name .. "_*")
+			if patterns then
+				for i, pattern in ipairs(patterns) do
+					if string.match(data, pattern) do
+						return true
+					end
+				end
+			end
+		end
+	end
+
+	return false
+
+return M