90 lines
1.7 KiB
JavaScript
90 lines
1.7 KiB
JavaScript
const dateUtil = require('./util.date')
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let log = console
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// 将console中的日志缓存起来，当setLogger时，将控制台的日志写入日志文件
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let backupLogs = []
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function backup (fun, args) {
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if (backupLogs === null) {
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return
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}
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try {
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backupLogs.push({
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fun,
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args,
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time: dateUtil.format(new Date()),
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})
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// 最多缓存 100 条
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if (backupLogs.length > 100) {
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backupLogs = backupLogs.slice(1)
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}
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} catch {
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}
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}
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function printBackups () {
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if (backupLogs === null || log === console) {
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return
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}
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try {
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const backups = backupLogs
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backupLogs = null // 先置空历史消息对象，再记录日志
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for (const item of backups) {
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log[item.fun](...[`[${item.time}] console -`, ...item.args])
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}
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} catch {
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}
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}
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function _doLog (fun, args) {
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if (log === console) {
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log[fun](...[`[${fun.toUpperCase()}]`, ...args])
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backup(fun, args) // 控制台日志备份起来
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} else {
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log[fun](...args)
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}
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}
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module.exports = {
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setLogger (logger) {
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if (logger == null) {
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log.error('logger 不能为空')
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return
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}
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if (logger === log) {
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return
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}
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log = logger
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if (log !== console) {
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try {
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if (backupLogs && backupLogs.length > 0) {
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log.info('[util.log-or-console.js] 日志系统已初始化完成，现开始将历史控制台信息记录到日志文件中：')
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printBackups()
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}
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} catch {
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}
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}
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},
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debug (...args) {
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_doLog('debug', args)
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},
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info (...args) {
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_doLog('info', args)
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},
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warn (...args) {
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_doLog('warn', args)
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},
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error (...args) {
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_doLog('error', args)
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},
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}
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