Log4JS - UDP appender

This is an optional appender for log4js-node.

npm install log4js-udp-appender

This appender like logstashUDP, but transfer raw data to UDP server. It uses the node.js core UDP support, and so requires no extra dependencies. Remember to call log4js.shutdown in your application if you want the UDP socket closed cleanly.

Configuration

• type - log4js-udp-appender
• host - string - hostname (or IP-address) of the target server
• port - integer - port of the target server
• layout - (optional, defaults to basic with \n at end of message) - used for the whole message sent via UDP to server (see layouts)

Example

default config

log4js.configure({
  appenders: {
    collector: {
      type: 'log4js-udp-appender',
      host: 'log.server',
      port: 12345
    }
  },
  categories: {
    default: { appenders: ['collector'], level: 'info' }
  }
});
const logger = log4js.getLogger();
logger.info("important log message", { cheese: 'gouda', biscuits: 'hobnob' });

This will result in a message being sent to log.server:12345 over UDP, with the following format:

[2020-05-05T18:48:44.461] [INFO] default - important log message { cheese: 'gouda', biscuits: 'hobnob' }
// <-- newline here