Better logging with winston

src/logger.js

@@ -0,0 +1,86 @@
+import winston from 'winston';
+import fs from 'fs';
+import path from 'path';
+import DailyRotateFile from 'winston-daily-rotate-file';
+
+let LOGS_FOLDER = './logs/';
+
+if (typeof process !== 'undefined' && process.env.NODE_ENV === 'test') {
+  LOGS_FOLDER = './test_logs/'
+}
+
+let currentLogsFolder = LOGS_FOLDER;
+var currentTransports;
+
+const logger = new winston.Logger();
+
+export function configureLogger({logsFolder}) {
+  logsFolder = logsFolder || currentLogsFolder;
+
+  if (!path.isAbsolute(logsFolder)) {
+    logsFolder = path.resolve(process.cwd(), logsFolder);
+  }
+  if (!fs.existsSync(logsFolder)) {
+    fs.mkdirSync(logsFolder);
+  }
+  currentLogsFolder = logsFolder;
+
+  currentTransports = [
+    new (winston.transports.Console)({
+      colorize: true,
+      level: process.env.VERBOSE ? 'verbose': 'info'
+    }),
+    new (DailyRotateFile)({
+      filename: 'parse-server.info',
+      dirname: currentLogsFolder,
+      name: 'parse-server',
+      level: process.env.VERBOSE ? 'verbose': 'info'
+    }),
+    new (DailyRotateFile)({
+      filename: 'parse-server.err',
+      dirname: currentLogsFolder,
+      name: 'parse-server-error',
+      level: 'error'
+    })
+  ]
+
+  logger.configure({
+    transports: currentTransports
+  })
+}
+
+configureLogger({logsFolder: LOGS_FOLDER});
+
+export function addGroup(groupName) {
+  let level = process.env.VERBOSE ? 'verbose': 'info';
+  winston.loggers.add(groupName, {
+    transports:  [
+      new (winston.transports.Console)({
+        colorize: true,
+        level: level
+      }),
+      new (DailyRotateFile)({
+        filename: groupName,
+        dirname: currentLogsFolder,
+        name: groupName,
+        level: level
+      }),
+      new (DailyRotateFile)({
+        filename: 'parse-server.info',
+        name: 'parse-server',
+        dirname: currentLogsFolder,
+        level: level
+      }),
+      new (DailyRotateFile)({
+        filename: 'parse-server.err',
+        dirname: currentLogsFolder,
+        name: 'parse-server-error',
+        level: 'error'
+      })
+    ]
+  });
+  return winston.loggers.get(groupName);
+}
+
+export { logger };
+export default winston;