第一个请求"/>
云中的Firestore函数需要几分钟来初始化并发出第一个请求
对于在Cloud Function上运行的这个简单的Firestore查询,如果我们有一段时间没有调用它并需要创建一个新的客户端连接,则总是要花很长时间(最长的时间是100+秒)
下面是最小可复制index.ts
和详细日志。我尝试同时使用admin.firestore()
和new Firestore({ grpc })
并得到了相似的结果。
import {https, config} from 'firebase-functions';
import * as admin from "firebase-admin";
const { Firestore } = require('@google-cloud/firestore');
const grpc = require('@grpc/grpc-js');
let initialized = false;
exports.timeQuery = https.onRequest(async (req:any, res) => {
res.json({received: true});
if (!initialized) {
admin.initializeApp(config().firebase);
admin.firestore.setLogFunction(console.log);
initialized = true;
}
// using gRPC
console.log('using gRPC via @google-cloud/firestore')
const db = new Firestore({ grpc });
// using admin node SDK
// const db = admin.firestore();
await db.collection("debugCollection")
.doc("debug")
.get();
}
);
我在Firestore中启用了调试日志记录,发现初始化Firestore GAPIC客户端花了47秒。
Firestore (3.7.5) 2020-05-04T20:37:23.541Z ##### [Firestore]: Initialized Firestore GAPIC Client
1:36:36.054 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:36:36.054Z peRnr [ClientPool.acquire]: Creating a new client
并且在发送请求和接收查询响应之间,又花了35秒钟。
Firestore (3.7.5) 2020-05-04T20:38:00.139Z peRnr [Firestore.requestStream]: Received response: {"transaction":{"type":"Buffer","data":[]},"readTime":{"seconds":"1588624676","nanos":86619000},"missing":"projects/xxxxxxxx-my-project-id/databases/(default)/documents/debugCollection/debug","result":"missing"}
1:37:25.141 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:37:25.141Z peRnr [Firestore.requestStream]: Sending request: {"database":"projects/xxxxxxxx-my-project-id/databases/(default)","documents":["projects/xxxxxxxx-my-project-id/databases/(default)/documents/debugCollection/debug"]}
这里是详细信息日志。
1:38:05.440 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:38:05.440Z peRnr [Firestore.getAll_]: Received 1 results
1:38:05.240 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:38:05.240Z peRnr [Firestore._initializeStream]: Received stream end
1:38:00.340 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:38:00.340Z peRnr [Firestore.getAll_]: Document missing: projects/xxxxxxxx-my-project-id/databases/(default)/documents/debugCollection/debug
1:38:00.141 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:38:00.140Z peRnr [Firestore._initializeStream]: Releasing stream
1:38:00.141 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:38:00.139Z peRnr [Firestore.requestStream]: Received response: {"transaction":{"type":"Buffer","data":[]},"readTime":{"seconds":"1588624676","nanos":86619000},"missing":"projects/lovecaster-staging/databases/(default)/documents/debugCollection/debug","result":"missing"}
1:37:25.141 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:37:25.141Z peRnr [Firestore.requestStream]: Sending request: {"database":"projects/xxxxxxxx-my-project-id/databases/(default)","documents":["projects/xxxxxxxx-my-project-id/databases/(default)/documents/debugCollection/debug"]}
1:37:25.140 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:37:25.140Z peRnr [ClientPool.acquire]: Re-using existing client with 100 remaining operations
1:37:24.440 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:37:24.440Z ##### [Firestore.initializeIfNeeded]: Detected project ID: xxxxxxxxxxx-my-projectID
1:37:23.541 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:37:23.541Z ##### [Firestore]: Initialized Firestore GAPIC Client
1:36:36.054 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:36:36.054Z peRnr [ClientPool.acquire]: Creating a new client
1:36:36.052 PM
timeQuery
Firestore (3.7.5) 2020-05-04T20:36:36.051Z ##### [Firestore]: Initialized Firestore
1:36:36.050 PM
timeQuery
using gRPC via @google-cloud/firestore
1:36:36.043 PM
timeQuery
Function execution took 54 ms, finished with status code: 200
1:36:35.989 PM
timeQuery
Function execution started
和节点包版本:"firebase-admin": "^8.11.0", "@grpc/grpc-js": "0.8.1", "@google-cloud/firestore": "3.7.5",
您的功能具有这种方式,因为您在所有工作完成之前就发送了响应。根据documentation,在发送响应后立即终止功能。之后的任何其他工作可能无法正确完成。因此,在函数中,对res.json({received: true});
的调用应该是非常[
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云中的Firestore函数需要几分钟来初始化并发出第一个请求
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