我需要连接到谷歌云Firestore从我的Next.js无服务器功能托管在Vercel。我已经建立了一个服务帐户，但是所有的文档都依赖于凭据是文件，而我想使用环境变量(在Vercel平台中更自然)。
的例子:
const Firestore = require('@google-cloud/firestore');
const firestore = new Firestore({
projectId: 'YOUR_PROJECT_ID',
keyFilename: '/path/to/keyfile.json',
});
我不能使用keyFilename，我宁愿显式传递服务帐户电子邮件和私钥。
工作代码:
const projectId = process.env.GOOGLE_PROJECT_ID;
const email = process.env.GOOGLE_SERVICE_ACCOUNT_EMAIL;
const key = process.env.GOOGLE_PRIVATE_KEY.replace(/\n/g, 'n');
const Firestore = require('@google-cloud/firestore');
const firestore = new Firestore({
projectId: projectId,
credentials: {
client_email: email,
private_key: key,
},
});
请注意，我的GOOGLE_PRIVATE_KEYenv var有文字ns，正如Google Cloud的JSON一样，所以我使用.replace()来将它们翻译成实际的换行符。这实际上只需要在我的本地环境中使用.env.local，因为Vercel环境变量可以接受实际的换行符。
settings对象(构造函数Firestore()的参数)的文档记录很差，但我能够通过自己的源代码找出它，在那里我发现:
node_modules/@google-cloud/firestore/types/firestore.d.ts
Line 217:
/**
* Settings used to directly configure a `Firestore` instance.
*/
export interface Settings {
/**
* The project ID from the Google Developer's Console, e.g.
* 'grape-spaceship-123'. We will also check the environment variable
* GCLOUD_PROJECT for your project ID. Can be omitted in environments that
* support {@link https://cloud.google.com/docs/authentication Application
* Default Credentials}
*/
projectId?: string;
/** The hostname to connect to. */
host?: string;
/** The port to connect to. */
port?: number;
/**
* Local file containing the Service Account credentials as downloaded from
* the Google Developers Console. Can be omitted in environments that
* support {@link https://cloud.google.com/docs/authentication Application
* Default Credentials}. To configure Firestore with custom credentials, use
* the `credentials` property to provide the `client_email` and
* `private_key` of your service account.
*/
keyFilename?: string;
/**
* The 'client_email' and 'private_key' properties of the service account
* to use with your Firestore project. Can be omitted in environments that
* support {@link https://cloud.google.com/docs/authentication Application
* Default Credentials}. If your credentials are stored in a JSON file, you
* can specify a `keyFilename` instead.
*/
credentials?: {client_email?: string; private_key?: string};
/** Whether to use SSL when connecting. */
ssl?: boolean;
/**
* The maximum number of idle GRPC channels to keep. A smaller number of idle
* channels reduces memory usage but increases request latency for clients
* with fluctuating request rates. If set to 0, shuts down all GRPC channels
* when the client becomes idle. Defaults to 1.
*/
maxIdleChannels?: number;
/**
* Whether to use `BigInt` for integer types when deserializing Firestore
* Documents. Regardless of magnitude, all integer values are returned as
* `BigInt` to match the precision of the Firestore backend. Floating point
* numbers continue to use JavaScript's `number` type.
*/
useBigInt?: boolean;
/**
* Whether to skip nested properties that are set to `undefined` during
* object serialization. If set to `true`, these properties are skipped
* and not written to Firestore. If set `false` or omitted, the SDK throws
* an exception when it encounters properties of type `undefined`.
*/
ignoreUndefinedProperties?: boolean;
[key: string]: any; // Accept other properties, such as GRPC settings.
}
使用Firebase Admin SDK 11.9.0
import { initializeApp, getApps, cert } from "firebase-admin/app";
import { getFirestore } from "firebase-admin/firestore";
const firebaseApp = initializeApp({
credential: cert({
projectId: process.env.FIREBASE_PROJECT_ID,
clientEmail: process.env.FIREBASE_CLIENT_EMAIL,
privateKey: process.env.FIREBASE_PRIVATE_KEY?.replace(/\n/g, "n"),
}),
});
const db = getFirestore(firebaseApp);