update exmaple

example/index.js

@@ -1,5 +1,61 @@
+// this example needs a Sematext Logs Token
+// please set LOGS_TOKEN=YOUR_LOGS_TOKEN environment variable
+
+// var Logsene = require('winston-logsene')
+// for local tests, we import winston-logsene from the parent folder
+var Logsene = require('../lib/index.js')
+
 var winston = require('winston')
-var logsene = require('../lib/index.js') 
-var logger = new winston.Logger()
-logger.add (logsene, {token: process.env.LOGSENE_TOKEN, flushOnExit: true, type: 'test_logs'})
-logger.info('last message before exit')
+const {createLogger, format} = require('winston')
+
+// example for custom rewriter, e.g. add myServerIp field to all logs
+var myServerIp = '10.0.0.12'
+
+var logger = createLogger({
+  levels: winston.config.npm.levels,
+  // format: winston.format.json(),
+  transports: [new Logsene({
+    // set log level, defaut is 'info'
+    level: 'debug',
+    // optional set a format function
+    format: format.splat(),
+    token: process.env.LOGS_TOKEN,
+    // you can adjust log message in the rewrite function
+    rewriter: function (level, msg, meta) {
+      meta.ip = myServerIp
+      return meta
+    }
+  })]
+})
+
+logger.on('flush', function () { console.log('logs flushed', arguments) })
+logger.on('error', console.error)
+// logger.on('logged', console.log)
+
+// Setup HTTP service to demonstrate logging
+var http = require('http')
+const PORT = 7080
+
+function handleRequest (request, response) {
+  logger.info('request for: ' + request.url, request.headers)
+  response.end('It Works!! Path Hit: ' + request.url)
+  // log memory usage for simple monitoring
+  logger.info('memory usage' + process.memoryUsage().rss, process.memoryUsage())
+}
+var server = http.createServer(handleRequest)
+// graceful shutdown
+process.on('SIGINT', function () {
+  // avoid handling HTTP requests in shutdown phase
+  server.close(function () {
+    logger.info('Closed HTTP server socket')
+    console.log('Closing HTTP server socket')
+  })
+  // make sure web server process terminates in 15 seconds
+  // this should give winston-logsene time to flush log buffer
+  setTimeout(process.exit, 15000)
+})
+
+server.listen(PORT, function () {
+    // Callback triggered when server is successfully listening. Hurray!
+  console.log('Server listening on: http://localhost:%s', PORT)
+})