Firestore 触发器未在模拟器上运行

Posted 2023-02-22

【中文标题】Firestore 触发器未在模拟器上运行

【英文标题】：Firestore triggers not running on emulator

【发布时间】：2019-11-23 02:45:28

【问题描述】：

在本地 firestore 和函数模拟器上运行我的 firestore 触发器时，它们实际上不会触发。有时我会触发它们，但随后我做了一些小改动，一切都突然停止工作。

我的模拟器在节点 8 上运行。与模拟器交互的代码在节点 12 上运行。我可以看出模拟器正在运行，因为当我多次运行测试代码时，我可以看到正在添加文档到集合，但我的 onCreate 触发器从未运行。

这是我的触发器：

import * as functions from 'firebase-functions';

export const charactersOnCreate = functions.firestore.document('characters').onCreate(() => 
    console.log('triggered');
)

这是我的测试代码：

import * as dotenv from 'dotenv';
import * as admin from 'firebase-admin';
import * as path from 'path';
import  credential  from '../config';

dotenv.config(
    path: path.join(__dirname, '../../.env.test')
);

console.log(process.env.FIRESTORE_EMULATOR_HOST);

const app = admin.initializeApp( credential );

const db = app.firestore();

const runTest = async () => 
    const charactersRef = db.collection('characters');
    const allCharacters = await charactersRef.get()
    allCharacters.forEach(character => 
        console.log('\t', character.id);
    );
    const userDoc = await db.collection('users').doc();
    console.log(userDoc.id);
    await userDoc.set(
        characters: []
    );
    const characterDoc = await db.collection('characters').doc();
    console.log(characterDoc.id);
    await characterDoc.set(
        ownerRef: userDoc
    );
    const userData = (await userDoc.get()).data();
    const characterData = (await characterDoc.get()).data();
    console.log(characterData);
    console.log(userData);


runTest().then(() => 
    console.log('done');
).catch((err) => 
    console.error(err);
);

这是模拟器启动的输出：

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://localhost:8080
i  firestore: For testing set FIRESTORE_EMULATOR_HOST=localhost:8080
i  functions: Watching "/Users/josh/Development/Projects/naturoll-api/functions" for Cloud Functions...
i  functions: Setting up Cloud Firestore trigger "charactersOnCreate"
✔  functions: Trigger "charactersOnCreate" has been acknowledged by the Cloud Firestore emulator.
i  functions: Setting up Cloud Firestore trigger "charactersOnUpdate"
✔  functions: Trigger "charactersOnUpdate" has been acknowledged by the Cloud Firestore emulator.

这是我的测试代码的输出：

localhost:8080
2DUPXO9J6yrzbOuoDPzw
nfE7y8VhsoF5vxvHzHqA
 ownerRef: 
   DocumentReference 
     _firestore: 
      Firestore 
        _settings: [Object],
        _settingsFrozen: true,
        _serializer: [Object],
        _projectId: 'naturoll-7b519',
        _lastSuccessfulRequest: 1563044750473,
        _preferTransactions: false,
        _clientPool: [Object] ,
     _path: ResourcePath  segments: [Array]   
 characters: [] 
done

这是我的 Firestore 日志：

API endpoint: http://localhost:8080
If you are using a library that supports the FIRESTORE_EMULATOR_HOST environment variable, run:

   export FIRESTORE_EMULATOR_HOST=localhost:8080

Dev App Server is now running.

Jul 13, 2019 3:05:39 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Jul 13, 2019 3:05:39 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.
Jul 13, 2019 3:05:40 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Jul 13, 2019 3:05:50 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.

我不确定此时还能做什么。我不明白为什么触发器没有触发。当我再次运行测试代码时，之前创建的角色 id 也会被打印出来，因此 firestore 显然正在运行并接受数据。

【参考方案1】：

事实证明，即使您不使用通配符，也需要存在通配符才能触发触发器。

变化

export const charactersOnCreate = functions.firestore.document('characters').onCreate(() => 

到

export const charactersOnCreate = functions.firestore.document('characters/characterId').onCreate(() => 

解决问题