Export FHIR resources to Cloud Storage

Export resources from an FHIR store to Cloud Storage.

Documentation pages that include this code sample

To view the code sample used in context, see the following documentation:

Code sample

Go

import (
	"context"
	"fmt"
	"io"
	"time"

	healthcare "google.golang.org/api/healthcare/v1"
)

// exportFHIRResource exports the resources in the FHIR store.
func exportFHIRResource(w io.Writer, projectID, location, datasetID, fhirStoreID, gcsURIPrefix string) error {
	ctx := context.Background()

	healthcareService, err := healthcare.NewService(ctx)
	if err != nil {
		return fmt.Errorf("healthcare.NewService: %v", err)
	}

	storesService := healthcareService.Projects.Locations.Datasets.FhirStores

	name := fmt.Sprintf("projects/%s/locations/%s/datasets/%s/fhirStores/%s", projectID, location, datasetID, fhirStoreID)
	req := &healthcare.ExportResourcesRequest{
		GcsDestination: &healthcare.GoogleCloudHealthcareV1FhirGcsDestination{
			UriPrefix: gcsURIPrefix,
		},
	}

	op, err := storesService.Export(name, req).Do()
	if err != nil {
		return fmt.Errorf("Export: %v", err)
	}

	operationsService := healthcareService.Projects.Locations.Datasets.Operations
	ticker := time.NewTicker(1 * time.Second)
	defer ticker.Stop()
	for {
		select {
		case <-ctx.Done():
			return ctx.Err()
		case <-ticker.C:
			newOp, err := operationsService.Get(op.Name).Do()
			if err != nil {
				return fmt.Errorf("operationsService.Get(%q): %v", op.Name, err)
			}
			if newOp.Done {
				if newOp.Error != nil {
					return fmt.Errorf("export operation %q completed with error: %v", op.Name, newOp.Error)
				}
				return nil
			}
		}
	}
}

Java

import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.healthcare.v1.CloudHealthcare;
import com.google.api.services.healthcare.v1.CloudHealthcare.Projects.Locations.Datasets.FhirStores;
import com.google.api.services.healthcare.v1.CloudHealthcareScopes;
import com.google.api.services.healthcare.v1.model.ExportResourcesRequest;
import com.google.api.services.healthcare.v1.model.GoogleCloudHealthcareV1FhirGcsDestination;
import com.google.api.services.healthcare.v1.model.Operation;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.util.Collections;

public class FhirStoreExport {
  private static final String FHIR_NAME = "projects/%s/locations/%s/datasets/%s/fhirStores/%s";
  private static final JsonFactory JSON_FACTORY = new JacksonFactory();
  private static final NetHttpTransport HTTP_TRANSPORT = new NetHttpTransport();

  public static void fhirStoreExport(String fhirStoreName, String gcsUri) throws IOException {
    // String fhirStoreName =
    //    String.format(
    //        FHIR_NAME, "your-project-id", "your-region-id", "your-dataset-id", "your-fhir-id");
    // String gcsUri = "gs://your-bucket-id/path/to/destination/dir"

    // Initialize the client, which will be used to interact with the service.
    CloudHealthcare client = createClient();

    // Configure where the store will be exported too.
    GoogleCloudHealthcareV1FhirGcsDestination gcsDestination =
        new GoogleCloudHealthcareV1FhirGcsDestination().setUriPrefix(gcsUri);
    ExportResourcesRequest exportRequest =
        new ExportResourcesRequest().setGcsDestination(gcsDestination);

    // Create request and configure any parameters.
    FhirStores.Export request =
        client.projects().locations().datasets().fhirStores().export(fhirStoreName, exportRequest);

    // Execute the request, wait for the operation to complete, and process the results.
    try {
      Operation operation = request.execute();
      while (operation.getDone() == null || !operation.getDone()) {
        // Update the status of the operation with another request.
        Thread.sleep(500); // Pause for 500ms between requests.
        operation =
            client
                .projects()
                .locations()
                .datasets()
                .operations()
                .get(operation.getName())
                .execute();
      }
      System.out.println("Fhir store export complete." + operation.getResponse());
    } catch (Exception ex) {
      System.out.printf("Error during request execution: %s", ex.toString());
      ex.printStackTrace(System.out);
    }
  }

  private static CloudHealthcare createClient() throws IOException {
    // Use Application Default Credentials (ADC) to authenticate the requests
    // For more information see https://cloud.google.com/docs/authentication/production
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

    // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
    HttpRequestInitializer requestInitializer =
        request -> {
          new HttpCredentialsAdapter(credential).initialize(request);
          request.setConnectTimeout(60000); // 1 minute connect timeout
          request.setReadTimeout(60000); // 1 minute read timeout
        };

    // Build the client for interacting with the service.
    return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
        .setApplicationName("your-application-name")
        .build();
  }
}

Node.js

const {google} = require('googleapis');
const healthcare = google.healthcare('v1');
const sleep = require('../sleep');

const exportFhirResourcesGcs = async () => {
  const auth = await google.auth.getClient({
    scopes: ['https://www.googleapis.com/auth/cloud-platform'],
  });
  google.options({auth});

  // TODO(developer): uncomment these lines before running the sample
  // const cloudRegion = 'us-central1';
  // const projectId = 'adjective-noun-123';
  // const datasetId = 'my-dataset';
  // const fhirStoreId = 'my-fhir-store';
  // const gcsUri = 'my-bucket/my-directory'
  const name = `projects/${projectId}/locations/${cloudRegion}/datasets/${datasetId}/fhirStores/${fhirStoreId}`;
  const request = {
    name,
    resource: {
      gcsDestination: {
        // The destination location in Cloud Storage for the FHIR resources
        uriPrefix: `gs://${gcsUri}`,
      },
    },
  };

  const operation = await healthcare.projects.locations.datasets.fhirStores.export(
    request
  );
  const operationName = operation.data.name;

  // Wait ten seconds for the LRO to finish
  await sleep(10000);

  // Check the LRO's status
  const operationStatus = await healthcare.projects.locations.datasets.operations.get(
    {name: operationName}
  );

  if (typeof operationStatus.data.metadata.counter !== 'undefined') {
    console.log('Exported FHIR resources successfully');
  } else {
    console.log('Export failed');
  }
};

exportFhirResourcesGcs();

Python

def export_fhir_store_gcs(project_id, cloud_region, dataset_id, fhir_store_id, gcs_uri):
    """Export resources to a Google Cloud Storage bucket by copying
    them from the FHIR store."""
    client = get_client()
    fhir_store_parent = "projects/{}/locations/{}/datasets/{}".format(
        project_id, cloud_region, dataset_id
    )
    fhir_store_name = "{}/fhirStores/{}".format(fhir_store_parent, fhir_store_id)

    body = {"gcsDestination": {"uriPrefix": "gs://{}/fhir_export".format(gcs_uri)}}

    request = (
        client.projects()
        .locations()
        .datasets()
        .fhirStores()
        .export(name=fhir_store_name, body=body)
    )

    response = request.execute()
    print("Exported FHIR resources to bucket: gs://{}".format(gcs_uri))

    return response

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