bunyan-rotate-file-stream

A stream for bunyan to output log to file,every day create a new file

Installation

npm install bunyan-rotate-file-stream

Constructor: new RotateFileStream(logpath,maxSize)

• logPath<String>: the logfile where logs are stored into,required
• maxSize <Int>: the max number of the log files in the log directory,optional

Example:

let logger = bunyan.createLogger({
  name: 'bunyan-rotate',
  serializers: bunyan.stdSerializers,
  src: false,
  streams: [
    {
      level: 'error',
      type: 'raw',
      stream: new RotateFileStream('./logs/error.log')),
    }
  ],
});
logger.error('test bunyan logger');

In your directory,it will make a file named 'error.log'. On the secode day,it will rename the file like 'error.log.20170607',and make a new file named 'error.log' to store new logs of the secode day.

You can also add other streams ,like:

let logger = bunyan.createLogger({
  name: 'bunyan-rotate',
  serializers: bunyan.stdSerializers,
  src: false,
  streams: [
    {
      level: 'error',
      type: 'raw',
      stream: new RotateFileStream(path.join('./logs/error.log')),
    }, {
      level: 'info',
      stream: process.stdout,
    },
  ],
});
logger.info('test bunyan info');
logger.error('test bunyan logger');

Output:

[2017-06-07T08:21:10.965Z]  INFO: bunyan-rotate/13896 on CNBJHQTEC111: test bunyan info
[2017-06-07T08:21:10.967Z] ERROR: bunyan-rotate/13896 on CNBJHQTEC111: test bunyan error

File '/logs/error.log':

{"name":"bunyan-rotate","hostname":"CNBJHQTEC111","pid":13896,"level":50,"msg":"test bunyan error","time":"2017-06-07T08:21:10.967Z","v":0}