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'use strict'
const format = require('quick-format-unescaped')
module.exports = pino
const _console = pfGlobalThisOrFallback().console || {}
const stdSerializers = {
mapHttpRequest: mock,
mapHttpResponse: mock,
wrapRequestSerializer: passthrough,
wrapResponseSerializer: passthrough,
wrapErrorSerializer: passthrough,
req: mock,
res: mock,
err: asErrValue,
errWithCause: asErrValue
}
function levelToValue (level, logger) {
return level === 'silent'
? Infinity
: logger.levels.values[level]
}
const baseLogFunctionSymbol = Symbol('pino.logFuncs')
const hierarchySymbol = Symbol('pino.hierarchy')
const logFallbackMap = {
error: 'log',
fatal: 'error',
warn: 'error',
info: 'log',
debug: 'log',
trace: 'log'
}
function appendChildLogger (parentLogger, childLogger) {
const newEntry = {
logger: childLogger,
parent: parentLogger[hierarchySymbol]
}
childLogger[hierarchySymbol] = newEntry
}
function setupBaseLogFunctions (logger, levels, proto) {
const logFunctions = {}
levels.forEach(level => {
logFunctions[level] = proto[level] ? proto[level] : (_console[level] || _console[logFallbackMap[level] || 'log'] || noop)
})
logger[baseLogFunctionSymbol] = logFunctions
}
function shouldSerialize (serialize, serializers) {
if (Array.isArray(serialize)) {
const hasToFilter = serialize.filter(function (k) {
return k !== '!stdSerializers.err'
})
return hasToFilter
} else if (serialize === true) {
return Object.keys(serializers)
}
return false
}
function pino (opts) {
opts = opts || {}
opts.browser = opts.browser || {}
const transmit = opts.browser.transmit
if (transmit && typeof transmit.send !== 'function') { throw Error('pino: transmit option must have a send function') }
const proto = opts.browser.write || _console
if (opts.browser.write) opts.browser.asObject = true
const serializers = opts.serializers || {}
const serialize = shouldSerialize(opts.browser.serialize, serializers)
let stdErrSerialize = opts.browser.serialize
if (
Array.isArray(opts.browser.serialize) &&
opts.browser.serialize.indexOf('!stdSerializers.err') > -1
) stdErrSerialize = false
const customLevels = Object.keys(opts.customLevels || {})
const levels = ['error', 'fatal', 'warn', 'info', 'debug', 'trace'].concat(customLevels)
if (typeof proto === 'function') {
levels.forEach(function (level) {
proto[level] = proto
})
}
if (opts.enabled === false || opts.browser.disabled) opts.level = 'silent'
const level = opts.level || 'info'
const logger = Object.create(proto)
if (!logger.log) logger.log = noop
setupBaseLogFunctions(logger, levels, proto)
// setup root hierarchy entry
appendChildLogger({}, logger)
Object.defineProperty(logger, 'levelVal', {
get: getLevelVal
})
Object.defineProperty(logger, 'level', {
get: getLevel,
set: setLevel
})
const setOpts = {
transmit,
serialize,
asObject: opts.browser.asObject,
asObjectBindingsOnly: opts.browser.asObjectBindingsOnly,
formatters: opts.browser.formatters,
reportCaller: opts.browser.reportCaller,
levels,
timestamp: getTimeFunction(opts),
messageKey: opts.messageKey || 'msg',
onChild: opts.onChild || noop
}
logger.levels = getLevels(opts)
logger.level = level
logger.isLevelEnabled = function (level) {
if (!this.levels.values[level]) {
return false
}
return this.levels.values[level] >= this.levels.values[this.level]
}
logger.setMaxListeners = logger.getMaxListeners =
logger.emit = logger.addListener = logger.on =
logger.prependListener = logger.once =
logger.prependOnceListener = logger.removeListener =
logger.removeAllListeners = logger.listeners =
logger.listenerCount = logger.eventNames =
logger.write = logger.flush = noop
logger.serializers = serializers
logger._serialize = serialize
logger._stdErrSerialize = stdErrSerialize
logger.child = function (...args) { return child.call(this, setOpts, ...args) }
if (transmit) logger._logEvent = createLogEventShape()
function getLevelVal () {
return levelToValue(this.level, this)
}
function getLevel () {
return this._level
}
function setLevel (level) {
if (level !== 'silent' && !this.levels.values[level]) {
throw Error('unknown level ' + level)
}
this._level = level
set(this, setOpts, logger, 'error') // <-- must stay first
set(this, setOpts, logger, 'fatal')
set(this, setOpts, logger, 'warn')
set(this, setOpts, logger, 'info')
set(this, setOpts, logger, 'debug')
set(this, setOpts, logger, 'trace')
customLevels.forEach((level) => {
set(this, setOpts, logger, level)
})
}
function child (setOpts, bindings, childOptions) {
if (!bindings) {
throw new Error('missing bindings for child Pino')
}
childOptions = childOptions || {}
if (serialize && bindings.serializers) {
childOptions.serializers = bindings.serializers
}
const childOptionsSerializers = childOptions.serializers
if (serialize && childOptionsSerializers) {
var childSerializers = Object.assign({}, serializers, childOptionsSerializers)
var childSerialize = opts.browser.serialize === true
? Object.keys(childSerializers)
: serialize
delete bindings.serializers
applySerializers([bindings], childSerialize, childSerializers, this._stdErrSerialize)
}
function Child (parent) {
this._childLevel = (parent._childLevel | 0) + 1
// make sure bindings are available in the `set` function
this.bindings = bindings
if (childSerializers) {
this.serializers = childSerializers
this._serialize = childSerialize
}
if (transmit) {
this._logEvent = createLogEventShape(
[].concat(parent._logEvent.bindings, bindings)
)
}
}
Child.prototype = this
const newLogger = new Child(this)
// must happen before the level is assigned
appendChildLogger(this, newLogger)
newLogger.child = function (...args) { return child.call(this, setOpts, ...args) }
// required to actually initialize the logger functions for any given child
newLogger.level = childOptions.level || this.level // allow level to be set by childOptions
setOpts.onChild(newLogger)
return newLogger
}
return logger
}
function getLevels (opts) {
const customLevels = opts.customLevels || {}
const values = Object.assign({}, pino.levels.values, customLevels)
const labels = Object.assign({}, pino.levels.labels, invertObject(customLevels))
return {
values,
labels
}
}
function invertObject (obj) {
const inverted = {}
Object.keys(obj).forEach(function (key) {
inverted[obj[key]] = key
})
return inverted
}
pino.levels = {
values: {
fatal: 60,
error: 50,
warn: 40,
info: 30,
debug: 20,
trace: 10
},
labels: {
10: 'trace',
20: 'debug',
30: 'info',
40: 'warn',
50: 'error',
60: 'fatal'
}
}
pino.stdSerializers = stdSerializers
pino.stdTimeFunctions = Object.assign({}, { nullTime, epochTime, unixTime, isoTime })
function getBindingChain (logger) {
const bindings = []
if (logger.bindings) {
bindings.push(logger.bindings)
}
// traverse up the tree to get all bindings
let hierarchy = logger[hierarchySymbol]
while (hierarchy.parent) {
hierarchy = hierarchy.parent
if (hierarchy.logger.bindings) {
bindings.push(hierarchy.logger.bindings)
}
}
return bindings.reverse()
}
function set (self, opts, rootLogger, level) {
// override the current log functions with either `noop` or the base log function
Object.defineProperty(self, level, {
value: (levelToValue(self.level, rootLogger) > levelToValue(level, rootLogger)
? noop
: rootLogger[baseLogFunctionSymbol][level]),
writable: true,
enumerable: true,
configurable: true
})
if (self[level] === noop) {
if (!opts.transmit) return
const transmitLevel = opts.transmit.level || self.level
const transmitValue = levelToValue(transmitLevel, rootLogger)
const methodValue = levelToValue(level, rootLogger)
if (methodValue < transmitValue) return
}
// make sure the log format is correct
self[level] = createWrap(self, opts, rootLogger, level)
// prepend bindings if it is not the root logger
const bindings = getBindingChain(self)
if (bindings.length === 0) {
// early exit in case for rootLogger
return
}
self[level] = prependBindingsInArguments(bindings, self[level])
}
function prependBindingsInArguments (bindings, logFunc) {
return function () {
return logFunc.apply(this, [...bindings, ...arguments])
}
}
function createWrap (self, opts, rootLogger, level) {
return (function (write) {
return function LOG () {
const ts = opts.timestamp()
const args = new Array(arguments.length)
const proto = (Object.getPrototypeOf && Object.getPrototypeOf(this) === _console) ? _console : this
for (var i = 0; i < args.length; i++) args[i] = arguments[i]
var argsIsSerialized = false
if (opts.serialize) {
applySerializers(args, this._serialize, this.serializers, this._stdErrSerialize)
argsIsSerialized = true
}
if (opts.asObject || opts.formatters) {
const out = asObject(this, level, args, ts, opts)
if (opts.reportCaller && out && out.length > 0 && out[0] && typeof out[0] === 'object') {
try {
const caller = getCallerLocation()
if (caller) out[0].caller = caller
} catch (e) {}
}
write.call(proto, ...out)
} else {
if (opts.reportCaller) {
try {
const caller = getCallerLocation()
if (caller) args.push(caller)
} catch (e) {}
}
write.apply(proto, args)
}
if (opts.transmit) {
const transmitLevel = opts.transmit.level || self._level
const transmitValue = levelToValue(transmitLevel, rootLogger)
const methodValue = levelToValue(level, rootLogger)
if (methodValue < transmitValue) return
transmit(this, {
ts,
methodLevel: level,
methodValue,
transmitLevel,
transmitValue: rootLogger.levels.values[opts.transmit.level || self._level],
send: opts.transmit.send,
val: levelToValue(self._level, rootLogger)
}, args, argsIsSerialized)
}
}
})(self[baseLogFunctionSymbol][level])
}
function asObject (logger, level, args, ts, opts) {
const {
level: levelFormatter,
log: logObjectFormatter = (obj) => obj
} = opts.formatters || {}
const argsCloned = args.slice()
let msg = argsCloned[0]
const logObject = {}
let lvl = (logger._childLevel | 0) + 1
if (lvl < 1) lvl = 1
if (ts) {
logObject.time = ts
}
if (levelFormatter) {
const formattedLevel = levelFormatter(level, logger.levels.values[level])
Object.assign(logObject, formattedLevel)
} else {
logObject.level = logger.levels.values[level]
}
if (opts.asObjectBindingsOnly) {
if (msg !== null && typeof msg === 'object') {
while (lvl-- && typeof argsCloned[0] === 'object') {
Object.assign(logObject, argsCloned.shift())
}
}
const formattedLogObject = logObjectFormatter(logObject)
return [formattedLogObject, ...argsCloned]
} else {
// deliberate, catching objects, arrays
if (msg !== null && typeof msg === 'object') {
while (lvl-- && typeof argsCloned[0] === 'object') {
Object.assign(logObject, argsCloned.shift())
}
msg = argsCloned.length ? format(argsCloned.shift(), argsCloned) : undefined
} else if (typeof msg === 'string') msg = format(argsCloned.shift(), argsCloned)
if (msg !== undefined) logObject[opts.messageKey] = msg
const formattedLogObject = logObjectFormatter(logObject)
return [formattedLogObject]
}
}
function applySerializers (args, serialize, serializers, stdErrSerialize) {
for (const i in args) {
if (stdErrSerialize && args[i] instanceof Error) {
args[i] = pino.stdSerializers.err(args[i])
} else if (typeof args[i] === 'object' && !Array.isArray(args[i]) && serialize) {
for (const k in args[i]) {
if (serialize.indexOf(k) > -1 && k in serializers) {
args[i][k] = serializers[k](args[i][k])
}
}
}
}
}
function transmit (logger, opts, args, argsIsSerialized = false) {
const send = opts.send
const ts = opts.ts
const methodLevel = opts.methodLevel
const methodValue = opts.methodValue
const val = opts.val
const bindings = logger._logEvent.bindings
if (!argsIsSerialized) {
applySerializers(
args,
logger._serialize || Object.keys(logger.serializers),
logger.serializers,
logger._stdErrSerialize === undefined ? true : logger._stdErrSerialize
)
}
logger._logEvent.ts = ts
logger._logEvent.messages = args.filter(function (arg) {
// bindings can only be objects, so reference equality check via indexOf is fine
return bindings.indexOf(arg) === -1
})
logger._logEvent.level.label = methodLevel
logger._logEvent.level.value = methodValue
send(methodLevel, logger._logEvent, val)
logger._logEvent = createLogEventShape(bindings)
}
function createLogEventShape (bindings) {
return {
ts: 0,
messages: [],
bindings: bindings || [],
level: { label: '', value: 0 }
}
}
function asErrValue (err) {
const obj = {
type: err.constructor.name,
msg: err.message,
stack: err.stack
}
for (const key in err) {
if (obj[key] === undefined) {
obj[key] = err[key]
}
}
return obj
}
function getTimeFunction (opts) {
if (typeof opts.timestamp === 'function') {
return opts.timestamp
}
if (opts.timestamp === false) {
return nullTime
}
return epochTime
}
function mock () { return {} }
function passthrough (a) { return a }
function noop () {}
function nullTime () { return false }
function epochTime () { return Date.now() }
function unixTime () { return Math.round(Date.now() / 1000.0) }
function isoTime () { return new Date(Date.now()).toISOString() } // using Date.now() for testability
/* eslint-disable */
/* istanbul ignore next */
function pfGlobalThisOrFallback () {
function defd (o) { return typeof o !== 'undefined' && o }
try {
if (typeof globalThis !== 'undefined') return globalThis
Object.defineProperty(Object.prototype, 'globalThis', {
get: function () {
delete Object.prototype.globalThis
return (this.globalThis = this)
},
configurable: true
})
return globalThis
} catch (e) {
return defd(self) || defd(window) || defd(this) || {}
}
}
/* eslint-enable */
module.exports.default = pino
module.exports.pino = pino
// Attempt to extract the user callsite (file:line:column)
/* istanbul ignore next */
function getCallerLocation () {
const stack = (new Error()).stack
if (!stack) return null
const lines = stack.split('\n')
for (let i = 1; i < lines.length; i++) {
const l = lines[i].trim()
// skip frames from this file and internals
if (/(^at\s+)?(createWrap|LOG|set\s*\(|asObject|Object\.apply|Function\.apply)/.test(l)) continue
if (l.indexOf('browser.js') !== -1) continue
if (l.indexOf('node:internal') !== -1) continue
if (l.indexOf('node_modules') !== -1) continue
// try formats like: at func (file:line:col) or at file:line:col
let m = l.match(/\((.*?):(\d+):(\d+)\)/)
if (!m) m = l.match(/at\s+(.*?):(\d+):(\d+)/)
if (m) {
const file = m[1]
const line = m[2]
const col = m[3]
return file + ':' + line + ':' + col
}
}
return null
}