feat(logs): logs to file with rotating + code split into files

api/src/app-modules/configureLogger.ts

@@ -0,0 +1,33 @@
+import path from 'path'
+import { Express } from 'express'
+import morgan from 'morgan'
+import { createStream } from 'rotating-file-stream'
+import { generateTimestamp } from '@sasjs/utils'
+import { getLogFolder } from '../utils'
+
+export const configureLogger = (app: Express) => {
+  const { LOG_FORMAT_MORGAN } = process.env
+
+  let options
+  if (
+    process.env.NODE_ENV !== 'development' &&
+    process.env.NODE_ENV !== 'test'
+  ) {
+    const timestamp = generateTimestamp()
+    const filename = `${timestamp}.log`
+    const logsFolder = getLogFolder()
+
+    // create a rotating write stream
+    var accessLogStream = createStream(filename, {
+      interval: '1d', // rotate daily
+      path: logsFolder
+    })
+
+    console.log('Writing Logs to :', path.join(logsFolder, filename))
+
+    options = { stream: accessLogStream }
+  }
+
+  // setup the logger
+  app.use(morgan(LOG_FORMAT_MORGAN as string, options))
+}