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Y'all can use the Cloud Firestore managed consign and import service to recover from accidental deletion of data and to consign data for offline processing. You can export all documents or only specific collections. Likewise, you can import all information from an consign or just specific collections. Data exported from i Deject Firestore database can exist imported into another Deject Firestore database. Y'all can as well load Deject Firestore exports into BigQuery.

This page describes how to consign and import Deject Firestore documents using the managed export and import service and Cloud Storage. The Cloud Firestore managed export and import service is available through the gcloud command-line tool and the Cloud Firestore API (Rest, RPC).

Earlier you begin

Earlier you tin utilise the managed export and import service, yous must consummate the following tasks:

1. Enable billing for your Google Deject project. Only Google Cloud projects with billing enabled can use the export and import functionality.
2. Create a Cloud Storage bucket for your project in a location nigh your Cloud Firestore database location. You cannot use a Requester Pays bucket for consign and import operations.

3. Brand sure your account has the necessary permissions for Cloud Firestore and Cloud Storage. If yous are the project possessor, your business relationship has the required permissions. Otherwise, the following roles grant the necessary permissions for export and import operations and for admission to Cloud Storage:

   • Cloud Firestore roles: Owner, Deject Datastore Owner, or Cloud Datastore Import Export Admin

   • Deject Storage roles: Owner or Storage Admin

Default service business relationship permissions

Each Google Cloud project automatically creates a default service account named PROJECT_ID@appspot.gserviceaccount.com. Export and import operations use this service business relationship to authorize Cloud Storage operations.

Your project's default service account requires access to the Cloud Storage saucepan used in an export or import functioning. If your Cloud Storage saucepan is in the same project as your Cloud Firestore database, and so the default service account has access to the bucket by default.

If the Cloud Storage bucket is in another projection, then you must requite the default service business relationship access to the Deject Storage bucket.

The service account needs the Storage Admin role for the Cloud Storage saucepan to be used for the export or import operation.

If you disable or delete your App Engine default service account, your App Engine app will lose access to your Deject Firestore database. If you lot disabled your App Engine service account, yous tin re-enable information technology, run into enabling a service business relationship. If you deleted your App Engine service account within the last 30 days, y'all tin can restore your service account, meet undeleting a service account.

Fix gcloud for your project

You can initiate import and export operations through the Google Deject Platform Console or the gcloud command-line tool. To use gcloud, prepare the command-line tool and connect to your project in one of the following ways:

• Admission gcloud from the Google Deject Platform panel using Cloud Shell.

  Get-go Cloud Trounce

  Brand sure gcloud is configured for the correct project:

                gcloud config fix projection [PROJECT_ID]                          

• Install and initialize the Google Cloud SDK.

Consign data

An consign functioning copies documents in your database to a set of files in a Cloud Storage bucket. Notation that an consign is not an exact database snapshot taken at the consign start time. An export may include changes made while the operation was running.

Export all documents

Google Deject Panel

1. Go to the Cloud Firestore Import/Consign page in the Google Cloud Platform Console.

   Get to the Import/Export page

2. Click Consign.

3. Click the Export entire database option.

4. Below Choose Destination, enter the name of a Deject Storage bucket or use the Browse button to select a saucepan.

5. Click Consign.

The console returns to the Import/Consign page. If the performance successfully starts, the page adds an entry to the recent imports and exports page. On failure, the page displays an error message.

gcloud

Use the firestore export command to export all the documents in your database, replacing [BUCKET_NAME] with the name of your Cloud Storage bucket. Add the --async flag to forestall the gcloud tool from waiting for the performance to consummate.

gcloud firestore consign gs://[BUCKET_NAME]            

You tin can organize your exports past adding a file prefix afterwards the bucket name, for case, BUCKET_NAME/my-exports-folder/export-proper noun. If you practise not provide a file prefix, the managed export service creates 1 based on the electric current timestamp.

In one case you start an consign operation, endmost the terminal does not cancel the operation, see cancel an performance.

Consign specific collections

Google Cloud Console

1. Get to the Cloud Firestore Import/Consign page in the Google Deject Platform Console.

   Go to the Import/Export page

2. Click Export.

3. Click the Export one or more collection groups option. Use the dropdown bill of fare to select i or more than drove groups.

4. Below Choose Destination, enter the name of a Deject Storage saucepan or use the Browse push button to select a saucepan.

5. Click Consign.

The console returns to the Import/Export page. If the operation successfully starts, the page adds an entry to the recent imports and exports page. On failure, the page displays an error message.

gcloud

To consign specific collection groups, apply the --drove-ids flag. The operation exports merely the collection groups with the given drove IDs. The collection group includes all collections and subcollections (at any path) with the specified collection ID.

gcloud firestore export gs://[BUCKET_NAME] --collection-ids=[COLLECTION_ID_1],[COLLECTION_ID_2]            

Import information

Once you have consign files in Cloud Storage, you can import documents in those files back into your projection or to another project. Note the post-obit points about import operations:

• When you import data, the required indexes are updated using your database's current index definitions. An consign does not contain alphabetize definitions.

• Imports practise not assign new document IDs. Imports utilise the IDs captured at the fourth dimension of the export. As a document is being imported, its ID is reserved to preclude ID collisions. If a document with the aforementioned ID already exists, the import overwrites the existing document.

• If a document in your database is non affected by an import, it will remain in your database afterward the import.

• Import operations practice not trigger Deject Functions. Snapshot listeners do receive updates related to import operations.

Import all documents from an export

Google Deject Panel

1. Go to the Cloud Firestore Import/Export page in the Google Deject Platform Console.

   Get to the Import/Export folio

2. Click Import.

3. In the Filename field, enter the filename of an .overall_export_metadata file from a completed export operation. Yous can use the Browse button to assistance you select the file.

4. Click Import.

The console returns to the Import/Export page. If the functioning successfully starts, the page adds an entry to the recent imports and exports folio. On failure, the page displays an error bulletin.

gcloud

Use the firestore import control to import documents from a previous export operation.

gcloud firestore import gs://[BUCKET_NAME]/[EXPORT_PREFIX]/            

where [BUCKET_NAME] and [EXPORT_PREFIX] point to the location of your consign files. For example:

gcloud firestore import gs://exports-bucket/2017-05-25T23:54:39_76544/            

You can confirm the location of your export files in the Deject Storage browser in the Google Cloud Platform Console:

Open up Cloud Storage browser

Once you start an import operation, closing the terminal does non cancel the operation, run across cancel an operation.

Import specific collections

Google Deject Console

You cannot select specific collections in the panel. Utilize gcloud instead.

gcloud

To import specific collection groups from a set of export files, use the --collection-ids flag. The performance imports only the collection groups with the given drove IDs. The drove group includes all collections and subcollections (at any path) with the specified collection ID.

Only an export of specific drove groups supports an import of specific collection groups. You cannot import specific collections from an export of all documents.

gcloud firestore import gs://[BUCKET_NAME]/[EXPORT_PREFIX]/ --drove-ids=[COLLECTION_ID_1],[COLLECTION_ID_2]            

Managing consign and import operations

After you start an consign or import functioning, Cloud Firestore assigns the functioning a unique name. You tin can utilize the performance proper name to delete, abolish, or status cheque the performance.

Operation names are prefixed with projects/[PROJECT_ID]/databases/(default)/operations/, for example:

projects/my-project/databases/(default)/operations/ASA1MTAwNDQxNAgadGx1YWZlZAcSeWx0aGdpbi1zYm9qLW5pbWRhEgopEg        

However, you can go out out the prefix when specifying an operation name for the draw, abolish, and deletecommands.

List all export and import operations

Google Deject Panel

Y'all tin view a list of recent export and import operations in the Cloud Firestore Import/Consign page of the Google Deject Platform Console.

Go to the Import/Consign page

gcloud

Utilize the operations listing control to come across all running and recently completed export and import operations:

gcloud firestore operations list

Check functioning status

Google Cloud Console

You can view the status of a contempo export or import operation in the Deject Firestore Import/Export page of the Google Cloud Platform Console.

Go to the Import/Export page

gcloud

Use the operations depict command to bear witness the status of an export or import operation.

gcloud firestore operations describe [OPERATION_NAME]

Guess the completion fourth dimension

A request for the status of a long-running performance returns the metrics workEstimated and workCompleted. Each of these metrics is returned in both number of bytes and number of entities:

• workEstimated shows the estimated total number of bytes and documents an operation volition process.

• workCompleted shows the number of bytes and documents candy and then far. After the functioning completes, the value shows the total number of bytes and documents that were really processed, which might be larger than the value of workEstimated.

Separate workCompleted by workEstimated for a rough progress approximate. This estimate might exist inaccurate, because it depends on delayed statistics collection.

Abolish an operation

Google Cloud Console

Y'all tin cancel a running export or import operation in the Cloud Firestore Import/Consign page of the Google Deject Platform Console.

Go to the Import/Consign folio

In the Recent imports and exports table, currently running operations include a Cancel push button in the Completed column. Click the Abolish push button to stop the operation. The button changes to a Cancelling message and and then to Cancelled when the performance stops completely.

gcloud

Use the operations cancel command to end an operation in progress:

gcloud firestore operations cancel [OPERATION_NAME]            

Cancelling a running operation does not undo the performance. A cancelled export functioning volition go out documents already exported in Cloud Storage, and a cancelled import operation will go out in place updates already made to your database. You lot cannot import a partially completed export.

Delete an functioning

Employ the gcloud firestore operations delete command to remove an operation from the listing of recent operations. This command volition not delete consign files from Cloud Storage.

gcloud firestore operations delete [OPERATION_NAME]        

Billing and pricing for export and import operations

You are required to enable billing for your Google Deject project before you use the managed export and import service. Export and import operations are charged for certificate reads and writes at the rates listed in Deject Firestore pricing.

The costs of export and import operations practise non count towards your spending limit. Export or import operations will not trigger your Google Cloud budget alerts until afterward completion. Similarly, reads and writes performed during an export or import operation are applied to your daily quota after the performance is consummate. Export and import operations volition not affect the usage shown in the usage department of the panel.

Viewing consign and import costs

Consign and import operations apply the goog-firestoremanaged:exportimport label to billed operations. In the Deject Billing reports folio, you can use this label to view costs related to import and export operations:

Consign to BigQuery

You lot tin load information from a Cloud Firestore export into BigQuery, but merely if yous specified a collection-ids filter. See Loading data from Cloud Firestore exports.

BigQuery column limit

BigQuery imposes a limit of x,000 columns per table. Deject Firestore export operations generate a BigQuery tabular array schema for each collection grouping. In this schema, each unique field name within a drove group becomes a schema column.

If a collection group'due south BigQuery schema surpasses 10,000 columns, the Cloud Firestore consign operation attempts to stay under the column limit by treating map fields as bytes. If this conversion brings the number of columns below 10,000, you can load the data into BigQuery, just you cannot query the subfields within the map fields. If the number of columns still exceeds ten,000, the export operation does not generate a BigQuery schema for the collection grouping and you cannot load its data into BigQuery.

The output of a managed export uses the LevelDB log format.

Metadata files

An export operation creates a metadata file for each collection group y'all specify. Metadata files are typically named ALL_NAMESPACES_KIND_[COLLECTION_GROUP_ID].export_metadata.

The metadata files are protocol buffers and you tin can decode them with the protoc protocol compiler. For instance, you tin can decode a metadata file to make up one's mind the drove groups the export files contain:

protoc --decode_raw < export0.export_metadata        

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Source: https://firebase.google.com/docs/firestore/manage-data/export-import

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