292 lines
9.8 KiB
Lua
292 lines
9.8 KiB
Lua
--[[
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webstats_log.lua - WebStats 日志采集模块
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=========================================
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本模块在 Nginx 的 log_by_lua_file 阶段执行，负责：
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- 采集请求日志数据
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- 过滤不需要统计的请求
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- 识别爬虫和客户端类型
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- 计算 PV/UV/IP 等指标
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- 将日志数据发送到共享内存队列
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执行时机：每次请求完成后（log_by_lua_file 阶段）
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注意：log_by_lua* 上下文中部分 API 不可用，需使用 ngx.var.* 变量替代
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]]
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-- -- 添加 Lua 模块搜索路径
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local cpath = "{$SERVER_APP}/lua/"
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if not package.cpath:find(cpath) then
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package.cpath = cpath .. "?.so;" .. package.cpath
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end
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if not package.path:find(cpath) then
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package.path = cpath .. "?.lua;" .. package.path
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end
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-- 调试模式开关
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local debug_mode = true
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local app_dir = "{$SERVER_APP}"
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local function run_app()
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local __C = require "webstats_common"
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local C = __C:getInstance()
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C:setAppDir(app_dir)
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local json = require "cjson"
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local config = require "webstats_config"
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local sites = require "webstats_sites"
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local server_name = C:get_sn(ngx.var.server_name)
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local host = ngx.var.host
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local http_port = ngx.var.http_port
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if http_port ~= "80" and http_port ~= "443" then
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host = host .. ":" .. http_port
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end
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C:setConfData(config, sites)
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local auto_config = C:setInputSn(server_name)
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-- 在 log_by_lua* 上下文中使用 ngx.var 替代不可用的 API
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local method = ngx.var.request_method
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local user_agent = ngx.var.http_user_agent
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local x_forwarded_for = ngx.var.http_x_forwarded_for
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local referer = ngx.var.http_referer
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local cache = ngx.shared.mw_total
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local total_key = "log_kv_total"
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local status_codes_to_log = {
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["400"] = true, ["401"] = true, ["402"] = true, ["403"] = true, ["404"] = true,
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["405"] = true, ["406"] = true, ["407"] = true, ["408"] = true, ["409"] = true,
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["410"] = true, ["411"] = true, ["412"] = true, ["413"] = true, ["414"] = true,
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["415"] = true, ["416"] = true, ["417"] = true, ["418"] = true, ["421"] = true,
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["422"] = true, ["423"] = true, ["424"] = true, ["425"] = true, ["426"] = true,
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["449"] = true, ["451"] = true, ["499"] = true, ["500"] = true, ["501"] = true,
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["502"] = true, ["503"] = true, ["504"] = true, ["505"] = true, ["506"] = true,
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["507"] = true, ["509"] = true, ["510"] = true
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}
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local http_methods = {["get"] = true, ["post"] = true, ["put"] = true, ["patch"] = true, ["delete"] = true}
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local function load_global_exclude_ip()
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local load_key = "global_exclude_ip_load"
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local global_exclude_ip = auto_config["exclude_ip"]
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if global_exclude_ip then
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for _, _ip in pairs(global_exclude_ip) do
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if not cache:get("global_exclude_ip_" .. _ip) then
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cache:set("global_exclude_ip_" .. _ip, true)
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end
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end
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end
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cache:set(load_key, true)
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end
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local function load_exclude_ip(input_server_name)
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local load_key = input_server_name .. "_exclude_ip_load"
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local site_config = config[input_server_name]
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local site_exclude_ip = nil
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if site_config then
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site_exclude_ip = site_config["exclude_ip"]
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end
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if site_exclude_ip then
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for _, _ip in pairs(site_exclude_ip) do
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cache:set(input_server_name .. "_exclude_ip_" .. _ip, true)
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end
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end
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cache:set(load_key, true)
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return true
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end
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local function filter_status()
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if not auto_config['exclude_status'] then return false end
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local the_status = tostring(ngx.status)
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for _, v in ipairs(auto_config['exclude_status']) do
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if the_status == v then
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return true
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end
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end
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return false
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end
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local function exclude_extension()
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local uri = ngx.var.uri
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if not uri then return false end
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local exclude_ext = auto_config['exclude_extension']
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if not exclude_ext then return false end
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local lower_uri = string.lower(uri)
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for _, ext in ipairs(exclude_ext) do
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if string.find(lower_uri, "." .. ext .. "$", 1, true) then
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return true
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end
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end
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return false
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end
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local function exclude_url()
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local request_uri = ngx.var.request_uri
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if not request_uri then return false end
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local url_conf = auto_config['exclude_url']
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if not url_conf then return false end
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local the_uri = string.sub(request_uri, 2)
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for _, conf in ipairs(url_conf) do
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local mode = conf["mode"]
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local url = conf["url"]
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if mode == "regular" then
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if ngx.re.find(the_uri, url, "ijo") then
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return true
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end
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else
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if the_uri == url then
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return true
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end
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end
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end
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return false
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end
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local function exclude_ip(input_server_name, ip)
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local site_config = config[input_server_name]
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if site_config then
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local server_exclude_ips = site_config["exclude_ip"]
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if server_exclude_ips then
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for _, _ip in pairs(server_exclude_ips) do
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if cache:get(input_server_name .. "_exclude_ip_" .. ip) then
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return true
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end
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break
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end
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end
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end
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return cache:get("global_exclude_ip_" .. ip) ~= nil
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end
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local function cache_logs(input_sn)
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local new_id = C:get_last_id(input_sn)
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local ip = C:get_client_ip()
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local excluded = filter_status() or exclude_extension() or exclude_url() or exclude_ip(input_sn, ip)
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local ip_list = x_forwarded_for
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if ip and not ip_list then
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ip_list = ip
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end
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local remote_addr = ngx.var.remote_addr
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if "table" == type(ip_list) then
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ip_list = json.encode(ip_list)
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end
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if remote_addr and not string.find(ip_list, remote_addr, 1, true) then
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ip_list = ip_list .. "," .. remote_addr
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end
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local request_time = C:get_request_time()
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local client_port = ngx.var.remote_port
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local uri = tostring(ngx.var.uri)
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local status_code = ngx.status
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local protocol = ngx.var.server_protocol
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local request_uri = ngx.var.request_uri
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local body_length = C:get_length()
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local domain = host or "unknown"
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local kv = {
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id = new_id,
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time_key = os.date("%Y%m%d%H", ngx.time()),
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time = ngx.time(),
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ip = ip,
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domain = domain,
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server_name = input_sn,
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real_server_name = input_sn,
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method = method,
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status_code = status_code,
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uri = uri,
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request_uri = request_uri,
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body_length = body_length,
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referer = referer,
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user_agent = user_agent,
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protocol = protocol,
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is_spider = 0,
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request_time = request_time,
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excluded = excluded,
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request_headers = '',
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ip_list = ip_list,
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client_port = client_port
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}
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local request_stat_fields = {req = 1, length = body_length}
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local spider_stat_fields = {}
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local client_stat_fields = {}
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if not excluded then
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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
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kv["request_headers"] = json.encode({
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user_agent = user_agent,
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referer = referer,
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host = host
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})
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end
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if status_codes_to_log[tostring(status_code)] then
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request_stat_fields["status_" .. status_code] = 1
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end
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local lower_method = method and string.lower(method) or ""
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if lower_method ~= "" and http_methods[lower_method] then
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request_stat_fields["http_" .. lower_method] = 1
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end
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local is_spider, request_spider, spider_index = C:match_spider(user_agent)
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if not is_spider then
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client_stat_fields = C:match_client_arr(user_agent)
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local pvc, uvc = C:statistics_request(ip, is_spider, body_length)
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local ipc = C:statistics_ipc(input_sn, ip)
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if ipc > 0 then request_stat_fields["ip"] = 1 end
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if uvc > 0 then request_stat_fields["uv"] = 1 end
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if pvc > 0 then request_stat_fields["pv"] = 1 end
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else
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kv["is_spider"] = spider_index
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spider_stat_fields[request_spider] = 1
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request_stat_fields["spider"] = 1
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end
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end
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local data = {
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server_name = input_sn,
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stat_fields = {
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request_stat_fields = request_stat_fields,
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client_stat_fields = client_stat_fields,
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spider_stat_fields = spider_stat_fields,
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},
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log_kv = kv,
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}
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cache:rpush(total_key, json.encode(data))
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end
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-- C:D("webstats_log run_app start, server_name=" .. tostring(server_name))
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-- C:D(tostring(total_key) ..":" .. tostring(ngx.shared.mw_total:llen(total_key)))
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load_global_exclude_ip()
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load_exclude_ip(server_name)
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cache_logs(server_name)
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-- C:D("webstats_log run_app end")
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end
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local function run_app_ok()
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-- if not debug_mode then return run_app() end
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local presult, err = pcall(function() run_app() end)
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if not presult then
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C:D("debug error on :" .. tostring(err))
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return true
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end
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end
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return run_app_ok() |