Начальная структура директорий, каркас проекта

server/core/AppLogger.js

@@ -0,0 +1,60 @@
+const fs = require('fs-extra');
+const Logger = require('./Logger');
+
+let instance = null;
+
+//singleton
+class AppLogger {
+    constructor() {
+        if (!instance) {
+            this.inited = false;
+            this.logFileName = '';
+            this.errLogFileName = '';
+            this.fatalLogFileName = '';
+
+            instance = this;
+        }
+
+        return instance;
+    }
+
+    async init(config) {
+        if (this.inited)
+            throw new Error('already inited');
+
+        let loggerParams = null;
+
+        if (config.loggingEnabled) {
+            await fs.ensureDir(config.logDir);
+
+            this.logFileName = `${config.logDir}/${config.name}.log`;
+            this.errLogFileName = `${config.logDir}/${config.name}.err.log`;
+            this.fatalLogFileName = `${config.logDir}/${config.name}.fatal.log`;
+
+            loggerParams = [
+                {log: 'ConsoleLog'},
+                {log: 'FileLog', fileName: this.logFileName},
+                {log: 'FileLog', fileName: this.errLogFileName, exclude: [LM_OK, LM_INFO, LM_TOTAL]},
+                {log: 'FileLog', fileName: this.fatalLogFileName, exclude: [LM_OK, LM_INFO, LM_WARN, LM_ERR, LM_TOTAL]},//LM_FATAL only
+            ];
+        }
+
+        this._logger = new Logger(loggerParams);
+
+        this.inited = true;
+        return this.logger;
+    }
+
+    get logger() {
+        if (!this.inited)
+            throw new Error('not inited');
+        return this._logger;
+    }
+
+    get log() {
+        const l = this.logger;
+        return l.log.bind(l);
+    }
+}
+
+module.exports = AppLogger;