Create HL7v2 message

Send a message to an HL7v2 store.

Explore further

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

Code sample

Go

import (
	"context"
	"encoding/base64"
	"fmt"
	"io"
	"io/ioutil"

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

// createHL7V2Message creates an HL7V2 message.
func createHL7V2Message(w io.Writer, projectID, location, datasetID, hl7V2StoreID, messageFile string) error {
	ctx := context.Background()

	hl7v2message, err := ioutil.ReadFile(messageFile)
	if err != nil {
		return fmt.Errorf("ReadFile: %v", err)
	}

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

	messagesService := healthcareService.Projects.Locations.Datasets.Hl7V2Stores.Messages

	req := &healthcare.CreateMessageRequest{
		Message: &healthcare.Message{
			Data: base64.StdEncoding.EncodeToString(hl7v2message),
		},
	}
	parent := fmt.Sprintf("projects/%s/locations/%s/datasets/%s/hl7V2Stores/%s", projectID, location, datasetID, hl7V2StoreID)
	resp, err := messagesService.Create(parent, req).Do()
	if err != nil {
		return fmt.Errorf("Create: %v", err)
	}

	fmt.Fprintf(w, "Created HL7V2 message: %q\n", resp.Name)
	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.Hl7V2Stores.Messages;
import com.google.api.services.healthcare.v1.CloudHealthcareScopes;
import com.google.api.services.healthcare.v1.model.CreateMessageRequest;
import com.google.api.services.healthcare.v1.model.Message;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.List;

@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
public class HL7v2MessageCreate {
  private static final String HL7v2_NAME = "projects/%s/locations/%s/datasets/%s/hl7V2Stores/%s";
  private static final JsonFactory JSON_FACTORY = new JacksonFactory();
  private static final NetHttpTransport HTTP_TRANSPORT = new NetHttpTransport();

  public static void hl7v2MessageCreate(String hl7v2StoreName, String messageId, String filePath)
      throws IOException {
    // String hl7v2StoreName =
    //    String.format(
    //        HL7v2_NAME, "your-project-id", "your-region-id", "your-dataset-id", "your-hl7v2-id");
    // String messageId = "your-message-id";
    // String filePath = "path/to/file.txt";

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

    // Load the data from file representing the message.
    List<String> lines = Files.readAllLines(Paths.get(filePath), Charset.defaultCharset());
    String data = String.join("\n", lines);
    Message message = new Message().setData(data).setName(messageId);
    CreateMessageRequest createRequest = new CreateMessageRequest().setMessage(message);

    // Create request and configure any parameters.
    Messages.Create request =
        client
            .projects()
            .locations()
            .datasets()
            .hl7V2Stores()
            .messages()
            .create(hl7v2StoreName, createRequest);

    // Execute the request and process the results.
    Message response = request.execute();
    System.out.println("HL7v2 message created: " + response.toPrettyString());
  }

  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/healthcare');
const healthcare = google.healthcare({
  version: 'v1',
  auth: new google.auth.GoogleAuth({
    scopes: ['https://www.googleapis.com/auth/cloud-platform'],
  }),
});
const fs = require('fs');
const util = require('util');
const readFile = util.promisify(fs.readFile);

const createHl7v2Message = async () => {
  // TODO(developer): uncomment these lines before running the sample
  // const cloudRegion = 'us-central1';
  // const projectId = 'adjective-noun-123';
  // const datasetId = 'my-dataset';
  // const hl7v2StoreId = 'my-hl7v2-store';
  // const hl7v2MessageFile = 'hl7v2-message.json';
  const hl7v2Message = JSON.parse(await readFile(hl7v2MessageFile));

  const parent = `projects/${projectId}/locations/${cloudRegion}/datasets/${datasetId}/hl7V2Stores/${hl7v2StoreId}`;
  const request = {parent, resource: hl7v2Message};

  const response =
    await healthcare.projects.locations.datasets.hl7V2Stores.messages.create(
      request
    );
  const {data} = response;
  console.log('Created HL7v2 message with data:\n', data);
};

createHl7v2Message();

Python

def create_hl7v2_message(
    project_id, location, dataset_id, hl7v2_store_id, hl7v2_message_file
):
    """Creates an HL7v2 message and sends a notification to the
    Cloud Pub/Sub topic.

    See https://github.com/GoogleCloudPlatform/python-docs-samples/tree/main/healthcare/api-client/v1/hl7v2
    before running the sample."""
    # Imports the Google API Discovery Service.
    from googleapiclient import discovery

    # Imports Python's built-in "json" module
    import json

    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'  # replace with your GCP project ID
    # location = 'us-central1'  # replace with the parent dataset's location
    # dataset_id = 'my-dataset'  # replace with the HL7v2 store's parent dataset ID
    # hl7v2_store_id = 'my-hl7v2-store'  # replace with the HL7v2 store's ID
    # hl7v2_message_file = 'hl7v2-message.json'  # replace with the path to the HL7v2 file
    hl7v2_parent = "projects/{}/locations/{}".format(project_id, location)
    hl7v2_store_name = "{}/datasets/{}/hl7V2Stores/{}".format(
        hl7v2_parent, dataset_id, hl7v2_store_id
    )

    with open(hl7v2_message_file) as hl7v2_message:
        hl7v2_message_content = json.load(hl7v2_message)

    request = (
        client.projects()
        .locations()
        .datasets()
        .hl7V2Stores()
        .messages()
        .create(parent=hl7v2_store_name, body=hl7v2_message_content)
    )

    response = request.execute()
    print("Created HL7v2 message from file: {}".format(hl7v2_message_file))
    return response

What's next

To search and filter code samples for other Google Cloud products, see the Google Cloud sample browser.