人们如何阅读json winston日志文件？

Question

对于API,脚本和其他内容来说,它看起来不错.但是使用文本编辑器读取winston json堆栈跟踪非常困难.例如

{"level":"info","message":"starting","timestamp":"2014-05-14T15:45:44.334Z"}
{"date":"Wed May 14 2014 08:45:45 GMT-0700 (Pacific Daylight Time)","process":{"pid":8804,"uid":null,"gid":null,"cwd":"C:\\data\\mytool","execPath":"C:\\Program Files\\nodejs\\node.exe","version":"v0.10.21","argv":["node","C:\\data\\mytool\\server"],"memoryUsage":{"rss":45199360,"heapTotal":32171264,"heapUsed":15158096}},"os":{"loadavg":[0,0,0],"uptime":70496.6138252},"trace":[{"column":null,"file":null,"function":"Object.parse","line":null,"method":"parse","native":true},{"column":32,"file":"C:\\data\\mytool\\src\\status.js","function":"Request._callback","line":166,"method":"_callback","native":false},{"column":22,"file":"C:\\data\\mytool\\node_modules\\request\\request.js","function":"Request.self.callback","line":122,"method":"self.callback","native":false},{"column":17,"file":"events.js","function":"Request.EventEmitter.emit","line":98,"method":"EventEmitter.emit","native":false},{"column":14,"file":"C:\\data\\mytool\\node_modules\\request\\request.js","function":"","line":888,"method":null,"native":false},{"column":20,"file":"events.js","function":"Request.EventEmitter.emit","line":117,"method":"EventEmitter.emit","native":false},{"column":12,"file":"C:\\data\\mytool\\node_modules\\request\\request.js","function":"","line":839,"method":null,"native":false},{"column":20,"file":"events.js","function":"IncomingMessage.EventEmitter.emit","line":117,"method":"EventEmitter.emit","native":false},{"column":16,"file":"_stream_readable.js","function":null,"line":920,"method":null,"native":false},{"column":13,"file":"node.js","function":"process._tickCallback","line":415,"method":"_tickCallback","native":false}],"stack":["SyntaxError: Unexpected end of input","    at Object.parse (native)","    at Request._callback (C:\\data\\mytool\\src\\status.js:166:32)","    at Request.self.callback (C:\\data\\mytool\\node_modules\\request\\request.js:122:22)","    at Request.EventEmitter.emit (events.js:98:17)","    at Request.<anonymous> (C:\\data\\mytool\\node_modules\\request\\request.js:888:14)","    at Request.EventEmitter.emit (events.js:117:20)","    at IncomingMessage.<anonymous> (C:\\data\\mytool\\node_modules\\request\\request.js:839:12)","    at IncomingMessage.EventEmitter.emit (events.js:117:20)","    at _stream_readable.js:920:16","    at process._tickCallback (node.js:415:13)"],"level":"error","message":"uncaughtException: Unexpected end of input","timestamp":"2014-05-14T15:45:45.228Z"}

Answer 1

只需将文件传输"json"属性设置为false,即可获得人类可读的日志.与您在控制台中看到的相同.

    var winston = require('winston');
    var logger = new winston.Logger({
      transports: [
        new winston.transports.File({
          json: false,
          filename:'log.log'
        }),
        new winston.transports.Console()
      ],
      exitOnError: false
    });
   logger.log('info', 'some msg');

Answer 2

将它传递给jq,就像sed for JSON一样.例如:

jq . file.log

Answer 3

为什么不在命令行上通过 JSON 格式化程序运行它呢？

例如（上面链接中的示例）

echo '{ element0: "lorem", element1: "ipsum" }' | python -mjson.tool

另一种方法可能是考虑围绕上述工具（或可能）jq构建 shell 脚本来执行一些自定义堆栈跟踪解析