mqtt gateway project

2026-07-29 18:23:59 +08:00 · 2025-07-05 13:47:49 +09:30
parent aed54bb3a6
commit 076aaae944
12 changed files with 1899 additions and 0 deletions
@@ -0,0 +1,78 @@
+const fs = require('fs');
+const path = require('path');
+const EventEmitter = require('events');
+
+class ConfigManager extends EventEmitter {
+  constructor(fileName) {
+    super();
+    this.config = {};  // 移除默认的 apiKeys 配置
+    this.configPath = path.join(__dirname, "..", "config", fileName);
+    this.loadConfig();
+    this.watchConfig();
+    // 添加防抖计时器变量
+    this.watchDebounceTimer = null;
+  }
+
+  loadConfig() {
+    try {
+      const data = fs.readFileSync(this.configPath, 'utf8');
+      const newConfig = JSON.parse(data);
+      
+      // 检测配置是否发生变化
+      if (JSON.stringify(this.config) !== JSON.stringify(newConfig)) {
+        console.log('配置已更新', this.configPath);
+        this.config = newConfig;
+        // 发出配置更新事件
+        this.emit('configChanged', this.config);
+      }
+    } catch (error) {
+      console.error('加载配置出错:', error, this.configPath);
+      if (error.code === 'ENOENT') {
+        this.createEmptyConfig();
+      }
+    }
+  }
+
+  createEmptyConfig() {
+    try {
+      const dir = path.dirname(this.configPath);
+      if (!fs.existsSync(dir)) {
+        fs.mkdirSync(dir, { recursive: true });
+      }
+      const defaultConfig = {};  // 空配置对象
+      fs.writeFileSync(this.configPath, JSON.stringify(defaultConfig, null, 2));
+      console.log('已创建空配置文件', this.configPath);
+    } catch (error) {
+      console.error('创建空配置文件出错:', error, this.configPath);
+    }
+  }
+
+  watchConfig() {
+    fs.watch(path.dirname(this.configPath), (eventType, filename) => {
+      if (filename === path.basename(this.configPath) && eventType === 'change') {
+        // 清除之前的计时器
+        if (this.watchDebounceTimer) {
+          clearTimeout(this.watchDebounceTimer);
+        }
+        // 设置新的计时器，300ms 后执行
+        this.watchDebounceTimer = setTimeout(() => {
+          this.loadConfig();
+        }, 300);
+      }
+    });
+  }
+
+  // 获取配置的方法
+  getConfig() {
+    return this.config;
+  }
+
+  // 获取特定配置项的方法
+  get(key) {
+    return this.config[key];
+  }
+}
+
+module.exports = {
+    ConfigManager
+};