backup Firestore

main.go

package main

import (
    "context"
    "fmt"
    "log"

    admin "cloud.google.com/go/firestore/apiv1/admin"
    "google.golang.org/genproto/googleapis/firestore/admin/v1"
)

func main() {
    // TODO(developer): Set these values for your project and export destination.
    projectID := "your-gcp-project-id"
    databaseID := "studiodb" // Specify your named database here.
    gcsOutputURI := "gs://your-gcs-bucket/path-for-export"

    ctx := context.Background()

    // Create the Firestore Admin client.
    client, err := admin.NewFirestoreAdminClient(ctx)
    if err != nil {
        log.Fatalf("Failed to create Firestore admin client: %v", err)
    }
    defer client.Close()

    // Construct the request for the export operation.
    // The 'Name' field must be formatted as "projects/{projectID}/databases/{databaseID}".
    req := &adminpb.ExportDocumentsRequest{
        Name:            fmt.Sprintf("projects/%s/databases/%s", projectID, databaseID),
        OutputUriPrefix: gcsOutputURI,
        // You can specify collection IDs here if you only want to export specific kinds.
        // CollectionIds: []string{"kind1", "kind2"},
    }

    log.Printf("Starting export for database '%s' to '%s'...", databaseID, gcsOutputURI)

    // The ExportDocuments method returns a long-running operation.
    op, err := client.ExportDocuments(ctx, req)
    if err != nil {
        log.Fatalf("Failed to start export operation: %v", err)
    }

    // You can wait for the operation to complete.
    // For very large databases, you might want to handle this asynchronously.
    resp, err := op.Wait(ctx)
    if err != nil {
        log.Fatalf("Export operation failed: %v", err)
    }

    log.Printf("Successfully exported database to: %s", resp.GetOutputUriPrefix())
}