Patch FHIR resource

Patch a FHIR resource.

Explore further

For detailed documentation that includes this code sample, see the following:

• Creating and managing FHIR resources

Code sample

Go

Before trying this sample, follow the Go setup instructions in the Cloud Healthcare API quickstart using client libraries. For more information, see the Cloud Healthcare API Go API reference documentation.

To authenticate to Cloud Healthcare API, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

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import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"

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

// patchFHIRResource patches an FHIR resource to be active or not.
func patchFHIRResource(w io.Writer, projectID, location, datasetID, fhirStoreID, resourceType, fhirResourceID string, active bool) error {
	ctx := context.Background()

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

	fhirService := healthcareService.Projects.Locations.Datasets.FhirStores.Fhir

	// The following payload works with a Patient resource and is not intended to work with
	// other types of FHIR resources. If necessary, supply a new payload with data that
	// corresponds to the FHIR resource you are patching.
	payload := []map[string]interface{}{
		{
			"op":    "replace",
			"path":  "/active",
			"value": active,
		},
	}
	jsonPayload, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("json.Encode: %w", err)
	}

	name := fmt.Sprintf("projects/%s/locations/%s/datasets/%s/fhirStores/%s/fhir/%s/%s", projectID, location, datasetID, fhirStoreID, resourceType, fhirResourceID)

	call := fhirService.Patch(name, bytes.NewReader(jsonPayload))
	call.Header().Set("Content-Type", "application/json-patch+json")
	resp, err := call.Do()
	if err != nil {
		return fmt.Errorf("Patch: %w", err)
	}
	defer resp.Body.Close()

	respBytes, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return fmt.Errorf("could not read response: %w", err)
	}

	if resp.StatusCode > 299 {
		return fmt.Errorf("Patch: status %d %s: %s", resp.StatusCode, resp.Status, respBytes)
	}
	fmt.Fprintf(w, "%s", respBytes)

	return nil
}

Java

Before trying this sample, follow the Java setup instructions in the Cloud Healthcare API quickstart using client libraries. For more information, see the Cloud Healthcare API Java API reference documentation.

To authenticate to Cloud Healthcare API, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

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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.gson.GsonFactory;
import com.google.api.services.healthcare.v1.CloudHealthcare;
import com.google.api.services.healthcare.v1.CloudHealthcareScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Collections;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;

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

  public static void fhirResourcePatch(String resourceName, String data)
      throws IOException, URISyntaxException {
    // String resourceName =
    //    String.format(
    //        FHIR_NAME, "project-id", "region-id", "dataset-id", "store-id", "resource-type",
    // "resource-id");
    // The following data works with a Patient resource and is not intended to work with
    // other types of FHIR resources. If necessary, supply new values for data that
    // correspond to the FHIR resource you are patching.
    // String data = "[{\"op\": \"replace\", \"path\": \"/active\", \"value\": false}]";

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

    HttpClient httpClient = HttpClients.createDefault();
    String uri = String.format("%sv1/%s", client.getRootUrl(), resourceName);
    URIBuilder uriBuilder = new URIBuilder(uri).setParameter("access_token", getAccessToken());
    StringEntity requestEntity = new StringEntity(data);

    HttpUriRequest request =
        RequestBuilder.patch(uriBuilder.build())
            .setEntity(requestEntity)
            .addHeader("Content-Type", "application/json-patch+json")
            .addHeader("Accept-Charset", "utf-8")
            .addHeader("Accept", "application/fhir+json; charset=utf-8")
            .build();

    // Execute the request and process the results.
    HttpResponse response = httpClient.execute(request);
    HttpEntity responseEntity = response.getEntity();
    if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
      System.err.print(
          String.format(
              "Exception patching FHIR resource: %s\n", response.getStatusLine().toString()));
      responseEntity.writeTo(System.err);
      throw new RuntimeException();
    }
    System.out.println("FHIR resource patched: ");
    responseEntity.writeTo(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();
  }

  private static String getAccessToken() throws IOException {
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

    return credential.refreshAccessToken().getTokenValue();
  }
}

Python

Before trying this sample, follow the Python setup instructions in the Cloud Healthcare API quickstart using client libraries. For more information, see the Cloud Healthcare API Python API reference documentation.

To authenticate to Cloud Healthcare API, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

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# Imports the types Dict and Any for runtime type hints.
from typing import Any, Dict  # noqa: E402


def patch_resource(
    project_id: str,
    location: str,
    dataset_id: str,
    fhir_store_id: str,
    resource_type: str,
    resource_id: str,
) -> Dict[str, Any]:
    """Updates part of an existing FHIR resource by applying the operations specified in a [JSON Patch](http://jsonpatch.com/) document.

    See
    https://github.com/GoogleCloudPlatform/python-docs-samples/tree/main/healthcare/api-client/v1/fhir
    before running the sample.
    See
    https://googleapis.github.io/google-api-python-client/docs/dyn/healthcare_v1.projects.locations.datasets.fhirStores.fhir.html#patch
    for the Python API reference.

    Args:
      project_id: The project ID or project number of the Cloud project you want
        to use.
      location: The name of the parent dataset's location.
      dataset_id: The name of the parent dataset.
      fhir_store_id: The name of the FHIR store.
      resource_type: The type of the FHIR resource.
      resource_id: The "logical id" of the resource. The ID is assigned by the
        server.

    Returns:
      A dict representing the patched FHIR resource.
    """
    # Imports the Google API Discovery Service.
    from googleapiclient import discovery

    api_version = "v1"
    service_name = "healthcare"

    # Returns an authorized API client by discovering the Healthcare API
    # and using GOOGLE_APPLICATION_CREDENTIALS environment variable.
    client = discovery.build(service_name, api_version)

    # TODO(developer): Uncomment these lines and replace with your values.
    # project_id = 'my-project'
    # location = 'us-central1'
    # dataset_id = 'my-dataset'
    # fhir_store_id = 'my-fhir-store'
    # resource_type = 'Patient'
    # resource_id = 'b682d-0e-4843-a4a9-78c9ac64'
    fhir_store_parent = (
        f"projects/{project_id}/locations/{location}/datasets/{dataset_id}"
    )
    fhir_resource_path = f"{fhir_store_parent}/fhirStores/{fhir_store_id}/fhir/{resource_type}/{resource_id}"

    # The following sample body works with a Patient resource and isn't guaranteed
    # to work with other types of FHIR resources. If necessary,
    # supply a new body with data that corresponds to the resource you
    # are updating.
    patient_body = [{"op": "replace", "path": "/active", "value": False}]

    request = (
        client.projects()
        .locations()
        .datasets()
        .fhirStores()
        .fhir()
        .patch(name=fhir_resource_path, body=patient_body)
    )

    # Sets required application/json-patch+json header.
    # See https://tools.ietf.org/html/rfc6902 for more information.
    request.headers["content-type"] = "application/json-patch+json"

    response = request.execute()

    print(
        f"Patched {resource_type} resource with ID {resource_id}:\n"
        f" {json.dumps(response, indent=2)}"
    )

    return response

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