在 Firestore 上的文档中设置 DocumentReference (NodeJS)

Question

我正在尝试使用 NodeJS v8.6.0 创建一个文档，其中包含对 Firestore 的引用。像这样

const admin = require('firebase-admin')
admin.initializeApp({ credential: MY_CREDENTIAL, databaseURL: MY_DB_URL })
const db = admin.firestore()

const ref = db.doc('foo/someDoc')
db.doc('bar/targetDoc').set({ link: ref })

虽然ref是DocumentReference，但结果

Error: Argument "data" is not a valid Document. Input object is deeper than 20 levels or contains a cycle.

有没有在 NodeJS (Admin)SDK 上做的？

另外，代码中使用的包是

"firebase-admin": "^5.4.1"

和

console.log(ref)

产出

DocumentReference {
  _firestore: 
   Firestore {
     makeAuthenticatedRequest: 
      { [Function: makeAuthenticatedRequest]
        getCredentials: [Function: bound getCredentials],
        authClient: [Object] },
     authClient: 
      Auth {
        authClientPromise: null,
        authClient: null,
        config: [Object],
        environment: {} },
     baseUrl: undefined,
     getCredentials: [Function: bound getCredentials],
     globalInterceptors: [],
     interceptors: [],
     packageJson: 
      { name: '@google-cloud/firestore',
        version: '0.8.1',
        author: 'Google Inc.',
        description: 'Firestore Client Library for Node.js',
        contributors: [Array],
        main: './src/index.js',
        files: [Array],
        repository: 'googleapis/nodejs-firestore',
        keywords: [Array],
        dependencies: [Object],
        devDependencies: [Object],
        scripts: [Object],
        license: 'Apache-2.0',
        engines: [Object],
        types: './types/firestore.d.ts' },
     projectId: 'MY_PROJECT',
     projectIdRequired: true,
     Promise: [Function: Promise],
     grpcMetadata: Metadata { _internal_repr: [Object] },
     maxRetries: undefined,
     userAgent: 'gcloud-node-firestore/0.8.1',
     activeServiceMap_: Map {},
     protos: {},
     _preferTransactions: false,
     _lastSuccessfulRequest: null,
     api: { Firestore: [Object] },
     _referencePath: 
      ResourcePath {
        segments: [],
        _formattedName: undefined,
        _projectId: 'dewpod-dev',
        _databaseId: '(default)' },
     app: 
      FirebaseApp {
        firebaseInternals_: [Object],
        services_: [Object],
        isDeleted_: false,
        name_: '[DEFAULT]',
        options_: [Object],
        database: [Function: bound ],
        auth: [Function: bound ],
        messaging: [Function: bound ],
        storage: [Function: bound ],
        firestore: [Function: bound ],
        INTERNAL: [Object] },
     INTERNAL: FirestoreInternals {} },
  _referencePath: 
   ResourcePath {
     segments: [ 'orgs', 'fooOrg' ],
     _formattedName: undefined,
     _projectId: 'dewpod-dev',
     _databaseId: '(default)' } }

完整的错误信息是

/SOME_PATH/node_modules/@google-cloud/firestore/src/validate.js:86
        throw new Error(message);
        ^

Error: Argument "data" is not a valid Document. Input object is deeper than 20 levels or contains a cycle.
    at Object.exports.(anonymous function) [as isDocument] (/SOME_PATH/node_modules/@google-cloud/firestore/src/validate.js:86:15)
    at WriteBatch.set (/SOME_PATH/node_modules/@google-cloud/firestore/src/write-batch.js:251:14)
    at DocumentReference.set (/SOME_PATH/node_modules/@google-cloud/firestore/src/reference.js:416:8)
    at Object.<anonymous> (/SOME_PATH/fstest.js:17:20)
    at Module._compile (module.js:624:30)
    at Object.Module._extensions..js (module.js:635:10)
    at Module.load (module.js:545:32)
    at tryModuleLoad (module.js:508:12)
    at Function.Module._load (module.js:500:3)
    at Function.Module.runMain (module.js:665:10)

Answer 1

这是管理 SDK 和 Firestore 的常规节点 SDK 之间交互中的错误。

对@google-cloud/firestore 0.8.2 的更新应该可以解决这个问题。

您可以使用 npm update 更新您的项目以获得此更改。

Answer 2

我在实现处理文档更新事件的后台函数时遇到了类似的错误。作为 docs suggest，重要的是要避免无限循环，方法是检查您是否无意中最终重新触发了相同的函数：

Any time you write to the same document that triggered a function, you are at risk of creating an infinite loop. Use caution and ensure that you safely exit the function when no change is needed

还有来自 here:

Caution: Be careful to avoid any situation in which the function's result actually retriggers the function, creating an infinite loop — for example, a function triggered by writes to a specific Cloud Firestore document that terminates by writing to that same path. Also make sure to write functions in an idempotent way, so that they produce the same result if they run multiple times for a single event.

在 Firestore 上的文档中设置 DocumentReference (NodeJS)

Setting a DocumentReference in Document on Firestore (NodeJS)

node.js

firebase

google-cloud-firestore