baidu-log-parser

用于解析百度后端的日志。类似于这样的：

[2018-12-30 18:00:01.028] [INFO] swan - logid:229c391a-c0e7-4993-8963-a68bacb19866_DCSjv4fohve16_0 pool_info:{"spareResourceCapacity":0,"size":4,"available":4,"borrowed":0,"pending":0,"max":4,"min":2} request:{"renderInfo":{"clientName":"puffer","moduleName":"lottery_views","onlyData":true,"needCommands":true}}

如果你们服务器的日志格式和这个差不多，但是此仓库却无法解析，请联系 [e-mail]。

Quick Start

npm install -g baidu-log-parser
cat node.log.2018123018 | parse-baidu-log

解析单行

把单行 Log 解析成一个JS对象。

const LineParser = require('baidu-log-parser/line-parser');

new LineParser(
    '[2018-12-30 18:00:01.027] [INFO] swan - [Perf][before ssr run .3][pid:14232],times: 1546164001027'
).parse();
/* 输出： { 
    date: 2018-12-30T10:00:01.027Z,
    level: 'INFO',
    name: 'swan',
    fields: {},
    text: '[Perf][before ssr run .3][pid:14232],times: 1546164001027' 
} */


new LineParser(
    `[2018-12-30 18:00:01.028] [INFO] swan - logid:229c391a-c0e7-4993-8963-a68bacb19866_DCSjv4fohve16_0 pool_info:{"spareResourceCapacity":0,"size":4,"available":4,"borrowed":0,"pending":0,"max":4,"min":2} request:{"renderInfo":{"clientName":"puffer","moduleName":"lottery_views","onlyData":true,"needCommands":true}}`
).parse();
/* 输出： { 
   date: 2018-12-30T10:00:01.028Z,
   level: 'INFO',
   name: 'swan',
   fields: { 
       logid: '229c391a-c0e7-4993-8963-a68bacb19866_DCSjv4fohve16_0',
       pool_info: { 
           spareResourceCapacity: 0,
           size: 4,
           available: 4,
           borrowed: 0,
           pending: 0,
           max: 4,
           min: 2 
       },
       request: { renderInfo: [Object] } 
   },
   text: '' 
}*/

解析文件（或任意一个可读流）

从一个日志文件中逐行读取出JS对象。

const Fs = require('fs');
const StreamParser = require('baidu-log-parser/stream-parser');

const log = new StreamParser(
    Fs.createReadStream('./node.log.2018123018')
);

(async function (){
    let logInfo = null;
    while (logInfo = await log.parseLine()) {
        // ...
    }
})();

在命令行中快速使用

可以在命令行中方便的将 stdin 的内容转换为JSON后 stdout 输出。

# 全局安装
npm install -g baidu-log-parser

# 将log文件按JSON格式输出
cat node.log.2018123018 | parse-baidu-log
cat node.log.2018123018 | grep '9031bd62-1340-4264-930f-3e9e903067c8_DCSiunsqxt09j_0' | parse-baidu-log
tail -f node.log.2018123018 | parse-baidu-log

该命令实际上就是将 process.stdin 传入 StreamParser，源代码差不多是这样的：

#!/usr/bin/env node

const StreamParser = require('../stream-parser');

const log = new StreamParser(process.stdin);

(async function () {
    let logInfo = null;
    while (logInfo = await log.parseLine()) {
        console.log(JSON.stringify(logInfo, null, '    '), '\n', '\n');
    }
})();