Firestore 云功能无法在本地运行

Posted 2023-02-22

【中文标题】Firestore 云功能无法在本地运行

【英文标题】：Firestore Cloud Functions not working locally

【发布时间】：2019-10-06 21:28:32

【问题描述】：

我已经创建了一个测试项目并确实根据文档配置了所有内容，但是当我运行该项目时，它没有按预期工作，在写这个问题之前，我做了谷歌并发现了一些重复的问题，但场景不同在每一个中，所以我假设这是不是重复的问题。

这是我的终端命令和输出：

functions ➤ npm run serve                                                                                         

> functions@ serve /Users/codecrash/Developments/crm-firestore/functions
> firebase serve --only functions

✔  functions: Using node@8 from host.
✔  functions: Emulator started at http://localhost:5000
i  functions: Watching "/Users/codecrash/Developments/crm-firestore/functions" for Cloud Functions...
i  Your code has been provided a "firebase-admin" instance.
i  functions: HTTP trigger initialized at http://localhost:5000/demo-crm/us-central1/helloWorld
Ignoring trigger "onWrite" because the Cloud Firestore emulator is not running.
Ignoring trigger "onUpdate" because the Cloud Firestore emulator is not running.
i  functions: Beginning execution of "helloWorld"
i  Your code has been provided a "firebase-admin" instance.
i  functions: Finished "helloWorld" in ~1s

我不确定，怎么了。 helloWorld 工作正常，但 onUpdate 和 onWrite 却不行。

我也尝试过运行以下命令，

functions ➤ firebase emulators:start                                                                                        
i  Starting emulators: ["functions","firestore"]
✔  functions: Using node@8 from host.
✔  functions: Emulator started at http://localhost:5001
i  firestore: Logging to firestore-debug.log
✔  firestore: Emulator started at http://127.0.0.1:8080
i  firestore: For testing set FIREBASE_FIRESTORE_EMULATOR_ADDRESS=127.0.0.1:8080
i  functions: Watching "/Users/codecrash/Developments/crm-firestore/functions" for Cloud Functions...
i  Your code has been provided a "firebase-admin" instance.
i  functions: HTTP trigger initialized at http://localhost:5001/demo-crm/us-central1/helloWorld
i  functions: Setting up Cloud Firestore trigger "onWrite"
✔  functions: Trigger "onWrite" has been acknowledged by the Cloud Firestore emulator.
i  functions: Setting up Cloud Firestore trigger "onUpdate"
✔  functions: Trigger "onUpdate" has been acknowledged by the Cloud Firestore emulator.
i  functions: Beginning execution of "helloWorld"
i  Your code has been provided a "firebase-admin" instance.
i  functions: Finished "helloWorld" in ~1s

但 onUpdate 或 onWrite 触发器仍然不走运。 不知道我做错了什么。

这是我的代码库：

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.helloWorld = functions.https.onRequest((request, response) => 
    response.send("Hello from Firebase!");
);

exports.onWrite = functions.firestore.document('users/userId').onWrite((change, context) => 

    const document = change.after.exists ? change.after.data() : null;
    const oldDocument = change.before.data();
    // perform desired operations ...
    console.log('local: onWrite change:', change);
    console.log('local: onWrite context:', context);
    console.log('local: onWrite document:', document);
    console.log('local: onWrite oldDocument:', oldDocument);
    return Promise.resolve();
);


exports.onUpdate = functions.firestore.document('users/userId').onUpdate((change, context) => 
    const document = change.after.exists ? change.after.data() : null;
    const oldDocument = change.before.data();

    // perform desired operations ...
    console.log('local: onUpdate change:', change);
    console.log('local: onUpdate context:', context);
    console.log('local: onUpdate document:', document);
    console.log('local: onUpdate oldDocument:', oldDocument);
    return new Promise().then(() => 
        return Promise.resolve();
    ).catch((error) => 
        return Promise.reject('error:code_crash');
    );
);

我在 env 变量中添加了键：

GOOGLE_APPLICATION_CREDENTIALS="/Users/codecrash/Developments/crm-firestore/functions/certificate.json"
FIREBASE_CONFIG="/Users/codecrash/Developments/crm-firestore/functions/certificate.json"

注意：当我将其部署在云功能上时，它运行良好。

谢谢。

【问题讨论】：

您使用的是哪个版本的 Firebase CLI？运行firebase --version。

@DougStevenson 它是 6.10.0

您找到解决方案了吗？我在这里运行同样的问题

这里也一样，请帮忙

与 firebase --version 7.1.0 相同。它也不起作用。

【参考方案1】：

我不知道为什么文档中没有明确提到这一点，但显然需要让客户端 sdk 了解模拟器。有一个 API 将客户端 sdk 指向本地模拟器实例。这是我在初始化 firebase 应用程序后立即在项目中进行设置的方法。希望对您有所帮助。

firebase.initializeApp(CONFIG);

if (process.env.NODE_ENV === 'development') 
  firebase.functions().useFunctionsEmulator('http://localhost:5001');

更新

当这个问题被问到（并得到回答）时，firebase 本地模拟器正在制作中。所以文档不足。 Firebase 现在支持被称为Firebase Emulator Suite 的几乎所有服务（不是存储），并且有很好的文档。看看吧。

【讨论】：

让我试试这个解决方案。谢谢:)

嗨@ron4ex，我收到错误 firebase.functions() is not a function，在我的情况下，firebase 是管理员（npm firebase-admin 模块），知道吗？

我不确定你想要达到什么目的。上面的代码是从客户端 sdk 本地触发云功能。我怀疑不支持没有客户端应用程序的手动触发：***.com/questions/52416261/…

当我添加这个时，if (process.env.NODE_ENV === 'development') firebase.functions().useFunctionsEmulator('http://localhost:5001'); ，webpack 抛出错误default.a.functions is not a function。知道如何解决吗？