log_by_lua_block {

	local cpath = "{$SERVER_APP}/lua/"
    if not package.cpath:find(cpath) then
        package.cpath = cpath .. "?.so;" .. package.cpath
    end
	if not package.path:find(cpath) then
		package.path = cpath .. "?.lua;" .. package.path
	end

	local ver = '0.2.4'
	local debug_mode = true

	local __C = require "webstats_common"
	local C = __C:getInstance()

	-- cache start ---
	local cache = ngx.shared.mw_total
	local function cache_set(server_name, id, key, val)
		local line_kv = "log_kv_" .. server_name .. '_' .. id .. "_" .. key
		cache:set(line_kv, val)
	end

	local function cache_clear(server_name, id, key)
		local line_kv = "log_kv_"..server_name..'_'..id.."_"..key
		cache:delete(line_kv)
	end

	local function cache_get(server_name, id, key)
		local line_kv = "log_kv_"..server_name..'_'..id.."_"..key
		local value = cache:get(line_kv)
		return value
	end


	-- cache end ---

	-- domain config is import
	local db = nil
	local json = require "cjson" 
	local sqlite3 = require "lsqlite3"
	local config = require "webstats_config"
	local sites = require "webstats_sites"

	-- string.gsub(C:get_sn(ngx.var.server_name),'_','.')
	local server_name = C:get_sn(ngx.var.server_name)


	C:setConfData(config, sites)

	local auto_config = C:setInputSn(server_name)

	local request_header = ngx.req.get_headers()
	local method = ngx.req.get_method()
	local excluded = false

	local day = os.date("%d")
	local number_day = tonumber(day)
	local day_column = "day"..number_day
	local flow_column = "flow"..number_day
	local spider_column = "spider_flow"..number_day
	--- default common var end ---

	local function init_var()
		return true
	end

	--------------------- exclude_func start --------------------------
	local function load_global_exclude_ip()
    	local load_key = "global_exclude_ip_load"
		-- update global exclude ip
		local global_exclude_ip = auto_config["exclude_ip"]
		if global_exclude_ip then
			for i, _ip in pairs(global_exclude_ip)
			do 
				-- global
				-- D("set global exclude ip: ".._ip)
				if not cache:get("global_exclude_ip_".._ip) then
					cache:set("global_exclude_ip_".._ip, true)
				end
			end
		end
    	-- set tag
    	cache:set(load_key, true)
	end

	local function load_exclude_ip(input_server_name)

		local load_key = input_server_name .. "_exclude_ip_load"
		local site_config = config[input_server_name]

		local site_exclude_ip = nil
		if site_config then
			site_exclude_ip = site_config["exclude_ip"]
		end

		-- update server_name exclude ip
		if site_exclude_ip then
			for i, _ip in pairs(site_exclude_ip)
			do 
				cache:set(input_server_name .. "_exclude_ip_".._ip, true)
			end
		end

    	-- set tag
    	cache:set(load_key, true)
		return true
	end

	local function filter_status()
		if not auto_config['exclude_status'] then return false end
		local the_status = tostring(ngx.status)
		for _,v in ipairs(auto_config['exclude_status'])
		do
			if the_status == v then
				return true
			end
		end
		return false
	end

	local function exclude_extension()
		local uri = ngx.var.uri
		if not uri then return false end
		
		local exclude_ext = auto_config['exclude_extension']
		if not exclude_ext then return false end
		
		local lower_uri = string.lower(uri)
		for _, ext in ipairs(exclude_ext) do
			if string.find(lower_uri, "." .. ext .. "$", 1, true) then
				return true
			end
		end
		return false
	end

	local function exclude_url()
		local request_uri = ngx.var.request_uri
		if not request_uri then return false end
		
		local url_conf = auto_config['exclude_url']
		if not url_conf then return false end
		
		local the_uri = string.sub(request_uri, 2)
		for _, conf in ipairs(url_conf) do
			local mode = conf["mode"]
			local url = conf["url"]
			if mode == "regular" then
				if ngx.re.find(the_uri, url, "ijo") then
					return true
				end
			else
				if the_uri == url then
					return true
				end
			end
		end
		return false
	end

	local function exclude_ip(input_server_name, ip)
		local site_config = config[input_server_name]
		if site_config then
			local server_exclude_ips = site_config["exclude_ip"]
			if server_exclude_ips then
				for _, _ip in pairs(server_exclude_ips) do
					if cache:get(input_server_name .. "_exclude_ip_" .. ip) then
						return true
					end
					break
				end
			end
		end
		
		return cache:get("global_exclude_ip_" .. ip) ~= nil
	end
	--------------------- exclude_func end ---------------------------

	local status_codes_to_log = {
	["400"] = true, ["401"] = true, ["402"] = true, ["403"] = true, ["404"] = true,
	["405"] = true, ["406"] = true, ["407"] = true, ["408"] = true, ["409"] = true,
	["410"] = true, ["411"] = true, ["412"] = true, ["413"] = true, ["414"] = true,
	["415"] = true, ["416"] = true, ["417"] = true, ["418"] = true, ["421"] = true,
	["422"] = true, ["423"] = true, ["424"] = true, ["425"] = true, ["426"] = true,
	["449"] = true, ["451"] = true, ["499"] = true, ["500"] = true, ["501"] = true,
	["502"] = true, ["503"] = true, ["504"] = true, ["505"] = true, ["506"] = true,
	["507"] = true, ["509"] = true, ["510"] = true
}

local http_methods = {["get"] = true, ["post"] = true, ["put"] = true, ["patch"] = true, ["delete"] = true}

local cache = ngx.shared.mw_total
local total_key = "log_kv_total"

local function cache_logs(input_sn)
		local new_id = C:get_last_id(input_sn)
		local ip = C:get_client_ip()
		local excluded = filter_status() or exclude_extension() or exclude_url() or exclude_ip(input_sn, ip)

		local ip_list = request_header["x-forwarded-for"]
		if ip and not ip_list then
			ip_list = ip
		end

		local remote_addr = ngx.var.remote_addr
		if "table" == type(ip_list) then
			ip_list = json.encode(ip_list)
		end

		if remote_addr and not string.find(ip_list, remote_addr, 1, true) then
			ip_list = ip_list .. "," .. remote_addr
		end

		local request_time = C:get_request_time()
		local client_port = ngx.var.remote_port
		local uri = tostring(ngx.var.uri)
		local status_code = ngx.status
		local protocol = ngx.var.server_protocol
		local request_uri = ngx.var.request_uri
		local body_length = C:get_length()
		local domain = C:get_domain()
		local referer = ngx.var.http_referer
		local user_agent = request_header['user-agent']
		local now_time = ngx.time()

		local kv = {
			id = new_id,
			time_key = os.date("%Y%m%d%H", now_time),
			time = now_time,
			ip = ip,
			domain = domain,
			server_name = input_sn,
			real_server_name = input_sn,
			method = method,
			status_code = status_code,
			uri = uri,
			request_uri = request_uri,
			body_length = body_length,
			referer = referer,
			user_agent = user_agent,
			protocol = protocol,
			is_spider = 0,
			request_time = request_time,
			excluded = excluded,
			request_headers = '',
			ip_list = ip_list,
			client_port = client_port
		}

		local request_stat_fields = {req = 1, length = body_length}
		local spider_stat_fields = {}
		local client_stat_fields = {}

		if not excluded then
			if status_code == 500 or (method == "POST" and config['global']["record_post_args"] == true) or (status_code == 403 and config['global']["record_get_403_args"] == true) then
				local ok, data = pcall(function() return C:get_http_origin() end)
				if ok and data then
					kv["request_headers"] = data
				end
			end

			if status_codes_to_log[tostring(status_code)] then
				request_stat_fields["status_" .. status_code] = 1
			end

			local lower_method = string.lower(method)
			if http_methods[lower_method] then
				request_stat_fields["http_" .. lower_method] = 1
			end

			local is_spider, request_spider, spider_index = C:match_spider(user_agent)
			if not is_spider then
				client_stat_fields = C:match_client_arr(user_agent)
				local pvc, uvc = C:statistics_request(ip, is_spider, body_length)
				local ipc = C:statistics_ipc(input_sn, ip)
				
				if ipc > 0 then request_stat_fields["ip"] = 1 end
				if uvc > 0 then request_stat_fields["uv"] = 1 end
				if pvc > 0 then request_stat_fields["pv"] = 1 end
			else
				kv["is_spider"] = spider_index
				spider_stat_fields[request_spider] = 1
				request_stat_fields["spider"] = 1
			end
		end

		local data = {
			server_name = input_sn,
			stat_fields = {
				request_stat_fields = request_stat_fields,
				client_stat_fields = client_stat_fields,
				spider_stat_fields = spider_stat_fields,
			},
			log_kv = kv,
		}

		cache:rpush(total_key, json.encode(data))
	end

	local function run_app()
		init_var()
		load_global_exclude_ip()
		load_exclude_ip(server_name)
		cache_logs(server_name)
	end


	local function run_app_ok()
		if not debug_mode then return run_app() end

		local presult, err = pcall( function() run_app() end)
		if not presult then
			C:D("debug error on :"..tostring(err))
			return true
		end
	end

	return run_app_ok()
}