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api/service/biz_proxy_service.js

@@ -0,0 +1,83 @@
+const axios = require("axios");
+const baseModel = require("../../middleware/baseModel");
+const config = require("../../config/config");
+const logs = require("../../tool/logs_proxy");
+
+const upstreamBaseUrl = config.upstream_api_url || "http://127.0.0.1:8888";
+
+/**
+ * 转发请求到上游并记录调用日志
+ * @param {object} params
+ * @param {string} params.api_path   - 接口路径，如 /user/GetProfile
+ * @param {string} params.method     - HTTP 方法
+ * @param {object} params.query      - query 参数（透传）
+ * @param {object} params.body       - body 参数（透传）
+ * @param {object} params.headers    - 需要透传的请求头
+ * @param {object} params.auth_ctx   - 鉴权上下文（verifyRequest 返回的 context）
+ * @returns {object} { status, data, headers }
+ */
+async function forwardRequest({ api_path, method, query, body, headers, auth_ctx }) {
+  const url = `${upstreamBaseUrl}${api_path}`;
+  const start = Date.now();
+  let status_code = 0;
+  let resp_data = null;
+  let resp_headers = {};
+
+  try {
+    const forwardHeaders = {};
+    if (headers["content-type"]) forwardHeaders["content-type"] = headers["content-type"];
+    if (headers["user-agent"]) forwardHeaders["user-agent"] = headers["user-agent"];
+
+    const resp = await axios({
+      method: method.toLowerCase(),
+      url,
+      params: query,
+      data: body,
+      headers: forwardHeaders,
+      timeout: 30000,
+      validateStatus: () => true,
+    });
+
+    status_code = resp.status;
+    resp_data = resp.data;
+    resp_headers = resp.headers;
+  } catch (err) {
+    status_code = 502;
+    resp_data = { ok: false, error_code: "UPSTREAM_ERROR", message: err.message };
+    logs.error(`[proxy] 转发失败 ${api_path}`, err.message);
+  }
+
+  const response_time = Date.now() - start;
+
+  // 异步写调用日志，不阻塞响应
+  writeCallLog({
+    user_id: auth_ctx.user_id,
+    token_id: auth_ctx.token_id,
+    api_path,
+    http_method: method.toUpperCase(),
+    status_code,
+    response_time,
+  }).catch((e) => logs.error("[proxy] 写调用日志失败", e.message));
+
+  return { status: status_code, data: resp_data, headers: resp_headers };
+}
+
+/**
+ * 写入 API 调用日志
+ */
+async function writeCallLog({ user_id, token_id, api_path, http_method, status_code, response_time }) {
+  const now = new Date();
+  const call_date = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, "0")}-${String(now.getDate()).padStart(2, "0")}`;
+  await baseModel.biz_api_call_log.create({
+    user_id,
+    token_id,
+    api_path,
+    http_method,
+    status_code,
+    response_time,
+    call_date,
+    created_at: now,
+  });
+}
+
+module.exports = { forwardRequest };