Work with point-in-time recovery (PITR)

Console

1. In the Google Cloud console, go to the Databases page.

   Go to Databases

2. Select the required database from the list of databases.

3. In the navigation menu, click Disaster Recovery.

4. Click Edit to edit the settings.

5. Select the Enable point-in-time recovery check box, and then click Save.

Enabling PITR would incur storage costs. See Pricing for more information.

To disable PITR, clear the Enable point-in-time recovery check box from the Disaster Recovery page in the Google Cloud console.

gcloud

Enable PITR during database creation with the gcloud firestore databases create command as follows:

gcloud firestore databases create\
  --location=LOCATION\
  [--database=DATABASE_ID; default="(default)"]\
  [--type=TYPE; default="firestore-native"]\
  --enable-pitr

Replace the values as follows:

• Location - location where you want to create your database.
• DATABASE_ID - set to the database ID or (default).
• TYPE - set to firestore-native.

You can disable PITR using the gcloud firestore databases update command as follows:

gcloud firestore databases update\
  [--database=DATABASE_ID; default="(default)"]\
  --no-enable-pitr

Replace the values as follows:

• DATABASE_ID - set to the database ID or (default).

Console

1. In the Google Cloud console, go to the Databases page.

   Go to Databases

2. Select the required database from the list of databases.

3. In the navigation menu, click Disaster Recovery.

4. In the Settings section, note the Retention period and Earliest version time.

   • Retention period: the period in which Cloud Firestore retains all versions of data for the database. The value is one hour when PITR is disabled and seven days when PITR is enabled.
   • Earliest version time: the earliest timestamp at which older versions of the data can be read in the PITR window. This value is continuously updated by Cloud Firestore and becomes stale the moment it is queried. If you are using this value to recover data, make sure to account for the time from the moment w̦hen the value is queried to the moment when you initiate the recovery.
   • Point-in-time recovery: shows Enabled, if PITR is enabled. If PITR is disabled, you will see Disabled.

gcloud

Run the gcloud firestore databases describe command as follows:

gcloud firestore databases describe --database=DATABASE_ID

Replace DATABASE_ID with the database ID or default.

Here's the output:

    appEngineIntegrationMode: ENABLED
    concurrencyMode: PESSIMISTIC
    createTime: '2021-03-24T17:02:35.234Z'
    deleteProtectionState: DELETE_PROTECTION_DISABLED
    earliestVersionTime: '2023-06-12T16:17:25.222474Z'
    etag: IIDayqOevv8CMNTvyNK4uv8C
    keyPrefix: s
    locationId: nam5
    name: projects/PROJECT_ID/databases/(default)
    pointInTimeRecoveryEnablement: POINT_IN_TIME_RECOVERY_DISABLED
    type: FIRESTORE_NATIVE
    uid: 5230c382-dcd2-468f-8cb3-2a1acfde2b32
    updateTime: '2021-11-17T17:48:22.171180Z'
    versionRetentionPeriod: 3600s

where,

• earliestVersionTime - timestamp of the earliest PITR data stored.
• pointInTimeRecoveryEnablement: shows POINT_IN_TIME_RECOVERY_ENABLED, if PITR is enabled. If PITR is disabled, you will either see POINT_IN_TIME_RECOVERY_DISABLED or the pointInTimeRecoveryEnablement field might not be displayed.
• versionRetentionPeriod - time period for which PITR data is retained in milliseconds. The value can be one hour when PITR is disabled or seven days if PITR is enabled.

Client libraries

  Firestore firestore = …

  TransactionOptions options =
          TransactionOptions.createReadOnlyOptionsBuilder()
              .setReadTime(
                  com.google.protobuf.Timestamp.newBuilder()
                      .setSeconds(1684098540L)
                      .setNanos(0))
              .build();

  ApiFuture<Void> futureTransaction = firestore.runTransaction(
              transaction -> {
                // Does a snapshot read document lookup
                final DocumentSnapshot documentResult =
                    transaction.get(documentReference).get();

                // Executes a snapshot read query
                final QuerySnapshot queryResult =
                  transaction.get(query).get();
              },
              options);

  // Blocks on transaction to complete
  futureTransaction.get();

  const documentSnapshot = await firestore.runTransaction(
    updateFunction => updateFunction.get(documentRef),
    {readOnly: true, readTime: new Firestore.Timestamp(1684098540, 0)}
);

  const querySnapshot = await firestore.runTransaction(
    updateFunction => updateFunction.get(query),
    {readOnly: true, readTime: new Firestore.Timestamp(1684098540, 0)}
  )

REST API

PITR reads are supported in all Cloud Firestore read methods, which are get, list, batchGet, listCollectionIds, listDocuments, runQuery, runAggregationQuery, and partitionQuery.

To perform a read using the REST methods, try one of the following options:

1. In the your read method request, pass the readTime value as as a supported PITR timestamp in the readOptions method. A PITR timestamp can be either microsecond precision timestamp within the past hour or a whole minute timestamp beyond the past hour, but not earlier than the earliestVersionTime.

2. Use the readTime parameter together with the BeginTransaction method as part of a ReadOnly transaction for multiple PITR reads.

Apache Beam

Use the Cloud FirestoreIO Apache Beam connector to read or write documents in a Cloud Firestore database at a large scale with Dataflow.

PITR reads are supported in the following read method of the Cloud FirestoreIO connector. These read methods support the withReadTime(@Nullable Instant readTime) method that you use can use for PITR reads:

• FirestoreV1.BatchGetDocuments
• FirestoreV1.ListCollectionIds
• FirestoreV1.ListDocuments
• FirestoreV1.PartitionQuery

• FirestoreV1.RunQuery

  Instant readTime = Instant.ofEpochSecond(1684098540L);

  PCollection<Document> documents =
      pipeline
          .apply(Create.of(collectionId))
          .apply(
              new FilterDocumentsQuery(
                  firestoreOptions.getProjectId(), firestoreOptions.getDatabaseId()))
          .apply(FirestoreIO.v1().read().runQuery().withReadTime(readTime).withRpcQosOptions(rpcQosOptions).build())
  ...

For a complete list of readTime examples in the Dataflow pipeline, see the Github repository.