wehub-resource-sync
107 lines
2.5 KiB
Lua
107 lines
2.5 KiB
Lua
local lsyslog = require "lsyslog"
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local cjson = require "cjson"
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local sandbox = require "kong.tools.sandbox".sandbox
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local kong_meta = require "kong.meta"
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local kong = kong
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local ngx = ngx
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local timer_at = ngx.timer.at
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local SENDER_NAME = "kong"
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local LOG_PRIORITIES = {
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debug = 7,
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info = 6,
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notice = 5,
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warning = 4,
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err = 3,
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crit = 2,
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alert = 1,
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emerg = 0
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}
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local LOG_LEVELS = {
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debug = lsyslog.LOG_DEBUG,
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info = lsyslog.LOG_INFO,
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notice = lsyslog.LOG_NOTICE,
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warning = lsyslog.LOG_WARNING,
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err = lsyslog.LOG_ERR,
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crit = lsyslog.LOG_CRIT,
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alert = lsyslog.LOG_ALERT,
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emerg = lsyslog.LOG_EMERG,
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}
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local FACILITIES = {
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auth = lsyslog.FACILITY_AUTH,
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authpriv = lsyslog.FACILITY_AUTHPRIV,
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cron = lsyslog.FACILITY_CRON,
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daemon = lsyslog.FACILITY_DAEMON,
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ftp = lsyslog.FACILITY_FTP,
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kern = lsyslog.FACILITY_KERN,
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lpr = lsyslog.FACILITY_LPR,
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mail = lsyslog.FACILITY_MAIL,
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news = lsyslog.FACILITY_NEWS,
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syslog = lsyslog.FACILITY_SYSLOG,
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user = lsyslog.FACILITY_USER,
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uucp = lsyslog.FACILITY_UUCP,
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local0 = lsyslog.FACILITY_LOCAL0,
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local1 = lsyslog.FACILITY_LOCAL1,
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local2 = lsyslog.FACILITY_LOCAL2,
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local3 = lsyslog.FACILITY_LOCAL3,
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local4 = lsyslog.FACILITY_LOCAL4,
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local5 = lsyslog.FACILITY_LOCAL5,
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local6 = lsyslog.FACILITY_LOCAL6,
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local7 = lsyslog.FACILITY_LOCAL7
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}
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local function send_to_syslog(log_level, severity, message, facility)
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if LOG_PRIORITIES[severity] <= LOG_PRIORITIES[log_level] then
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lsyslog.open(SENDER_NAME, FACILITIES[facility])
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lsyslog.log(LOG_LEVELS[severity], cjson.encode(message))
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end
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end
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local function log(premature, conf, message)
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if premature then
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return
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end
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if message.response.status >= 500 then
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send_to_syslog(conf.log_level, conf.server_errors_severity, message, conf.facility)
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elseif message.response.status >= 400 then
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send_to_syslog(conf.log_level, conf.client_errors_severity, message, conf.facility)
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else
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send_to_syslog(conf.log_level, conf.successful_severity, message, conf.facility)
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end
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end
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local SysLogHandler = {
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PRIORITY = 4,
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VERSION = kong_meta.version,
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}
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function SysLogHandler:log(conf)
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if conf.custom_fields_by_lua then
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local set_serialize_value = kong.log.set_serialize_value
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for key, expression in pairs(conf.custom_fields_by_lua) do
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set_serialize_value(key, sandbox(expression)())
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end
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end
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local message = kong.log.serialize()
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local ok, err = timer_at(0, log, conf, message)
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if not ok then
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kong.log.err("failed to create timer: ", err)
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end
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end
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return SysLogHandler
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