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Firestoreの定期的なバックアップ
基本的な方法は、Firebaseのドキュメントが参考になります。
エラー
ドキュメントそのままの設定だと以下のようなエラーが出ました。
TypeError: Cannot read property 'toString' of undefined
at PathTemplate.render (/workspace/node_modules/google-gax/build/src/pathTemplate.js:110:37)
at FirestoreAdminClient.databasePath (/workspace/node_modules/@google-cloud/firestore/build/src/v1/firestore_admin_client.js:962:56)
at exports.scheduledFirestoreExport.functions.pubsub.schedule.onRun (/workspace/index.js:11:33)
at cloudFunction (/workspace/node_modules/firebase-functions/lib/cloud-functions.js:130:23)
at Promise.resolve.then (/layers/google.nodejs.functions-framework/functions-framework/node_modules/@google-cloud/functions-framework/build/src/invoker.js:198:28)
at process._tickCallback (internal/process/next_tick.js:68:7)
調べた所、functions/index.jsのdatabasePathを以下のように変更すると直るようです。
変更前
functions/index.js
const databaseName = client.databasePath(process.env.GCP_PROJECT, '(default)');
変更後
functions/index.js
const projectId = process.env.GCP_PROJECT || process.env.GCLOUD_PROJECT;
const databaseName = client.databasePath(projectId, '(default)');
package.json
functions/package.json
{
"name": "functions",
"description": "Cloud Functions for Firebase",
"scripts": {
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log"
},
"engines": {
"node": "10"
},
"main": "index.js",
"dependencies": {
"@google-cloud/firestore": "^4.4.0",
"firebase-admin": "^8.10.0",
"firebase-functions": "^3.6.1"
},
"devDependencies": {
"firebase-functions-test": "^0.2.0"
},
"private": true
}
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