调用Firebase第二代Cloud Functions时遇System.AggregateException错误求助

问题相关代码 #

Cloud Functions 第二代函数代码 #

const functions = require('@google-cloud/functions-framework');

functions.http('canplace', (req, res) => {
    print("hi mark");
});

Unity调用代码 #

functions = FirebaseFunctions.DefaultInstance;

functions.GetHttpsCallable("canplace").CallAsync().ContinueWith(task => {
  if (task.IsCompletedSuccessfully) {
      Debug.Log("finished");
      Debug.Log(task.Result.Data);
  }else if (task.IsFaulted) {
      Debug.Log("Error: " + task.Exception.Message);
  }else if (task.IsCanceled) {
      Debug.Log("Canceled ");              
  }            
});

错误日志 #

Error: System.AggregateException: One or more errors occurred. (INTERNAL) ---> Firebase.Functions.FunctionsException: INTERNAL
  at Firebase.Functions.HttpsCallableReference.<CallAsync>b__9_0 (System.Threading.Tasks.Task`1[TResult] task) [0x00057] in /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/functions/src/HttpsCallableReference.cs:88 
  at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2[TAntecedentResult,TResult].InnerInvoke () [0x00024] in <8f06425e63004caf99a79845675f751e>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <8f06425e63004caf99a79845675f751e>:0 
   --- End of inner exception stack trace ---
---> (Inner Exception #0) Firebase.Functions.FunctionsException: INTERNAL
  at Firebase.Functions.HttpsCallableReference.<CallAsync>b__9_0 (System.Threading.Tasks.Task`1[TResult] task) [0x00057] in /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/functions/src/HttpsCallableReference.cs:88 
  at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2[TAntecedentResult,TResult].InnerInvoke () [0x00024] in <8f06425e63004caf99a79845675f751e>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <8f06425e63004caf99a79845675f751e>:0 <---

UnityEngine.Debug:Log (object)
FirebaseManager/<>c:<InitializeFirebase>b__15_0 (System.Threading.Tasks.Task`1<Firebase.Functions.HttpsCallableResult>) (at Assets/Scripts/FirebaseManager.cs:56)
System.Threading._ThreadPoolWaitCallback:PerformWaitCallback ()

解决方案 #

1. 修正Cloud Functions代码的核心问题 #

你的函数代码存在两个致命问题：

• Node.js环境中没有print函数，需替换为console.log。
• HTTP函数必须返回合法响应，否则请求会超时或返回内部错误，导致Unity端收到INTERNAL异常。

方案A：兼容Firebase HttpsCallable的HTTP函数（使用functions-framework）

const functions = require('@google-cloud/functions-framework');

functions.http('canplace', (req, res) => {
  try {
    console.log("hi mark");
    // 遵循Firebase Callable响应格式：返回包含data字段的JSON
    res.status(200).json({ data: "调用成功" });
  } catch (err) {
    // 错误响应也需符合格式
    res.status(500).json({ error: { message: err.message } });
  }
});

方案B：使用Firebase SDK编写标准Callable函数（更推荐）

如果不需要纯HTTP端点，直接用Firebase Functions SDK编写Callable函数，适配Unity的GetHttpsCallable调用：

const functions = require("firebase-functions");

exports.canplace = functions.https.onCall((data, context) => {
  console.log("hi mark");
  // 直接返回数据，SDK会自动包装成Callable要求的格式
  return { message: "调用成功" };
});

2. 调整Unity端调用代码 #

• 如果用方案A的HTTP函数：Unity不能直接用函数名调用，需使用函数的完整URL，替换GetHttpsCallable为GetHttpsCallableFromUrl：

var functionUrl = "https://你的区域-你的项目ID.cloudfunctions.net/canplace";
var callable = functions.GetHttpsCallableFromUrl(functionUrl);

callable.CallAsync().ContinueWith(task => {
  // 原逻辑不变
});

• 如果用方案B的标准Callable函数：原Unity代码无需修改，直接部署函数后即可调用。

3. 验证与排查 #

• 重新部署Cloud Functions，确保部署成功。
• 查看Firebase控制台的函数日志，确认函数是否被触发、是否执行无报错。
• 检查Unity项目的Firebase初始化是否正确，项目ID与Cloud Functions所属项目一致。

内容的提问来源于stack exchange，提问作者Keven Zanluchi