refactor: 客户端目录统一添加 kenaito-conf- 前缀

- go-client → kenaito-conf-go-client - python-client → kenaito-conf-python-client - python-client-demo → kenaito-conf-python-client-demo - nodejs-client → kenaito-conf-nodejs-client - nodejs-client-demo → kenaito-conf-nodejs-client-demo - 更新所有 README 和 package.json 中的路径引用
2026-02-26 21:13:49 +08:00
parent 710659350d
commit 03a95abb4b
30 changed files with 14 additions and 14 deletions
@@ -0,0 +1,172 @@
+import { Config } from './config.js';
+import { Cache } from './cache.js';
+import { Listener } from './listener.js';
+import { decryptConfig } from './crypto.js';
+
+export class ConfigClient {
+  constructor(config) {
+    this.config = config;
+    this.cache = new Cache(config.cacheDir);
+    this.listener = new Listener();
+    this.configs = {};
+    this.secret = '';
+    this.globalSecret = '';
+    this.lastTime = 0;
+    this.started = false;
+    this.timer = null;
+  }
+
+  onChange(handler) {
+    this.listener.onChange(handler);
+  }
+
+  get(key) {
+    return this.configs[key] ?? null;
+  }
+
+  getAll() {
+    return { ...this.configs };
+  }
+
+  async start() {
+    if (this.started) {
+      return;
+    }
+    this.started = true;
+
+    try {
+      await this.fetchAll();
+    } catch (err) {
+      console.warn('[ConfigClient] fetch all configs error:', err.message, ', trying cache');
+      const cached = this.cache.read();
+      if (cached) {
+        this.applyConfigs(cached);
+        console.info('[ConfigClient] loaded', Object.keys(this.configs).length, 'configs from cache');
+      } else {
+        throw new Error(`fetch configs failed and no cache: ${err.message}`);
+      }
+    }
+
+    this.timer = setInterval(() => {
+      this.fetchChanged().catch((err) => {
+        console.error('[ConfigClient] sync error:', err);
+      });
+    }, this.config.syncInterval * 1000);
+  }
+
+  stop() {
+    if (this.timer) {
+      clearInterval(this.timer);
+      this.timer = null;
+    }
+  }
+
+  async fetchAll() {
+    const url = `${this.config.baseUrl}/api/fetchAllConfigs`;
+    const payload = {
+      appName: this.config.appName,
+      env: this.config.env,
+      version: this.config.version,
+      ignoreGlobal: this.config.ignoreGlobal,
+      token: this.config.token,
+    };
+    const resp = await fetch(url, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(payload),
+      signal: AbortSignal.timeout(10000),
+    });
+    if (!resp.ok) {
+      throw new Error(`HTTP ${resp.status}`);
+    }
+    const data = await resp.json();
+    if (data.code != null && data.code !== 0) {
+      throw new Error(`server error: ${data.msg || 'unknown'}`);
+    }
+
+    const secret = data['kenaito.config.encrypt-secret'];
+    if (secret) {
+      this.secret = secret;
+    }
+    const globalSecret = data['kenaito.config.global-encrypt-secret'];
+    if (globalSecret) {
+      this.globalSecret = globalSecret;
+    }
+    const ts = data['latest.fetch.timestamp'];
+    if (ts) {
+      this.lastTime = parseInt(ts, 10);
+    }
+
+    this.cache.write(data);
+    this.applyConfigs(data);
+    console.info('[ConfigClient] fetched', Object.keys(this.configs).length, 'configs');
+  }
+
+  async fetchChanged() {
+    const url = `${this.config.baseUrl}/api/fetchChangedConfigs`;
+    const payload = {
+      appName: this.config.appName,
+      env: this.config.env,
+      version: this.config.version,
+      lastTime: this.lastTime,
+      ignoreGlobal: this.config.ignoreGlobal,
+      token: this.config.token,
+    };
+    const resp = await fetch(url, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        ...(this.config.token ? { Authorization: `Bearer ${this.config.token}` } : {}),
+      },
+      body: JSON.stringify(payload),
+      signal: AbortSignal.timeout(10000),
+    });
+    if (!resp.ok) {
+      throw new Error(`HTTP ${resp.status}`);
+    }
+    const result = await resp.json();
+    if (result.code !== 0) {
+      throw new Error(`server error code: ${result.code}`);
+    }
+
+    const changedData = result.data || {};
+    const ts = changedData['latest.fetch.timestamp'];
+    if (ts) {
+      this.lastTime = parseInt(ts, 10);
+    }
+    delete changedData['latest.fetch.timestamp'];
+
+    const changed = {};
+    for (const [k, v] of Object.entries(changedData)) {
+      changed[k] = this.tryDecrypt(v);
+    }
+
+    Object.assign(this.configs, changed);
+    this.listener.notify(changed);
+    console.info('[ConfigClient]', Object.keys(changed).length, 'configs changed');
+  }
+
+  applyConfigs(data) {
+    for (const [k, v] of Object.entries(data)) {
+      if (k.startsWith('kenaito.') || k === 'latest.fetch.timestamp') {
+        continue;
+      }
+      if (typeof v !== 'string') {
+        continue;
+      }
+      this.configs[k] = this.tryDecrypt(v);
+    }
+  }
+
+  tryDecrypt(value) {
+    let decrypted = decryptConfig(this.secret, value);
+    if (decrypted === value && this.globalSecret) {
+      decrypted = decryptConfig(this.globalSecret, value);
+    }
+    return decrypted;
+  }
+}
+
+export { Config } from './config.js';