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147 lines (134 loc) · 4.08 KB
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/**
*
* @description 处理异常模块
*
*/
var util = require('./util')
var env = require('./environment')
var dependenceMointer = require('./dependence')
var lzString = require('lz-string')
/**
* 根据堆栈的长度，截断多余的堆栈信息
* @param {String} stack 原始堆栈
* @param {Integer} maxDepth 最大堆栈长度
* @return {String} 截断后的堆栈
*/
function subStack(stack, maxDepth) {
if (!stack) {
return null
}
var arr = stack.toString().split('\n')
var stackDepth = arr.length
if (stackDepth > maxDepth) {
return arr.slice(0, maxDepth).join('\n')
}
return stack
}
function getErrorKey(error) {
return [error.message, error.file || 'null', error.line || 'null', error.col || 'null'].join('---')
}
/**
* 异常信息处理器
* @param {Object} cfg 配置信息
* @param {Object} store 存储库
* @param {Object} dispatcher 发送器
* @param {Object} userdata 自定义数据
* @param {Object} actionMonitor 行为捕捉器
*/
var tracker = function(cfg, store, dispatcher, userdata, actionMonitor) {
this.config = cfg
this.store = store
this.dispatcher = dispatcher
this.userdata = userdata
this.action = actionMonitor
this.reportCount = 0 // 已经发送的错误数量
this.lastError = null // 上一个出错信息，{key:{message}--{file}--{line}--{column},time:}
}
tracker.prototype = {
/**
* 捕获某个类型的异常，处理并发送请求
* @param {Object} error 错误信息
* @param {String} type 异常类型，有window,xhr,catch三种，分别对应window.onerror捕获,hook xhr捕获和主动try,catch捕获
*/
'catch': function(error, type) {
type = type.toLowerCase()
var info = {
source: type,
environment: env.all(),
url: location.href,
time: util.isoDate(),
token: this.config.token
}
switch (type) {
case 'window':
error.stack = subStack(error.stack, this.config.settings.maxStackDepth)
info.error = error
break
case 'xhr':
info.error = error
break
case 'catch': // todo 手动触发
break
}
this.report(info)
},
/**
* 发送错误报告，对要发送的内容有相应的的筛选规则
* @param {Object} info 报告主体
*/
report: function(info) {
if (this.throttle()) {
return
}
var key = getErrorKey(info.error)
if (this.lastError && key == this.lastError.key) { // 对发送的错误做一定的筛选
var lastErrorReportTime = new Date(this.lastError.time) // todo 查看ie6-7下面是否支持iso格式的时间格式化
var timespan = new Date() - lastErrorReportTime
if (timespan <= this.config.settings.maxErrorToleranceAge) {
this.store.clear()
return
}
}
// 加载额外的信息,verison/userdata必带，operation看配置需求
info.userdata = this.userdata.get()
info.version = this.config.settings.version
var cfg = this.config
if (cfg.action) {
Object.assign(info, {operation: this.store.all('act', true)})
}
if (cfg.dependence) {
Object.assign(info, {dependence: dependenceMointer.all()})
}
if (cfg.net) {
Object.assign(info, {net: this.store.all('net', true)})
}
// dev模式下，总是不压缩
if (process.env !== 'development' && cfg.compress) {
info = lzString.compress(JSON.stringify(info))
}
this.store.clear()
if (process.env === 'development') {
var oriInfo = JSON.stringify(info)
var start = new Date()
var compressInfo = lzString.compress(oriInfo)
var spend = new Date() - start
console.log(info, oriInfo.length, compressInfo.length, spend)
}
this.dispatcher.sendError(info)
this.lastError = {
key:key,
time:info.time
}
},
/**
* 确保别让错误一直发，有时候会遇到错误一直发生的情况，这种情况下就别发了
*/
throttle: function() {
this.reportCount++
if (this.reportCount > this.config.settings.maxReportCount) {
return true
}
return false
}
}
module.exports = tracker