Access regional secret version

Gets the version of a regional secret

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

• Access a regional secret version

Code sample

Go

To learn how to install and use the client library for Secret Manager, see Secret Manager client libraries.

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

import (
	"context"
	"fmt"
	"hash/crc32"
	"io"

	secretmanager "cloud.google.com/go/secretmanager/apiv1"
	"cloud.google.com/go/secretmanager/apiv1/secretmanagerpb"
	"google.golang.org/api/option"
)

// accessSecretVersion accesses the payload for the given secret version if one
// exists. The version can be a version number as a string (e.g. "5") or an
// alias (e.g. "latest").
func AccessRegionalSecretVersion(w io.Writer, projectId, locationId, secretId, versionId string) error {
	// name := "projects/my-project/locations/my-location/secrets/my-secret/versions/5"
	// name := "projects/my-project/locations/my-location/secrets/my-secret/versions/latest"

	// Create the client.
	ctx := context.Background()

	// Endpoint to call the regional secret manager sever
	endpoint := fmt.Sprintf("secretmanager.%s.rep.googleapis.com:443", locationId)
	client, err := secretmanager.NewClient(ctx, option.WithEndpoint(endpoint))
	if err != nil {
		return fmt.Errorf("failed to create secretmanager client: %w", err)
	}
	defer client.Close()

	name := fmt.Sprintf("projects/%s/locations/%s/secrets/%s/versions/%s", projectId, locationId, secretId, versionId)

	// Build the request.
	req := &secretmanagerpb.AccessSecretVersionRequest{
		Name: name,
	}

	// Call the API.
	result, err := client.AccessSecretVersion(ctx, req)
	if err != nil {
		return fmt.Errorf("failed to access regional secret version: %w", err)
	}

	// Verify the data checksum.
	crc32c := crc32.MakeTable(crc32.Castagnoli)
	checksum := int64(crc32.Checksum(result.Payload.Data, crc32c))
	if checksum != *result.Payload.DataCrc32C {
		return fmt.Errorf("Data corruption detected.")
	}

	// WARNING: Do not print the secret in a production environment - this snippet
	// is showing how to access the secret material.
	fmt.Fprintf(w, "Plaintext: %s\n", string(result.Payload.Data))
	return nil
}

Java

To learn how to install and use the client library for Secret Manager, see Secret Manager client libraries.

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

import com.google.cloud.secretmanager.v1.AccessSecretVersionResponse;
import com.google.cloud.secretmanager.v1.SecretManagerServiceClient;
import com.google.cloud.secretmanager.v1.SecretManagerServiceSettings;
import com.google.cloud.secretmanager.v1.SecretPayload;
import com.google.cloud.secretmanager.v1.SecretVersionName;
import java.util.zip.CRC32C;
import java.util.zip.Checksum;

public class AccessRegionalSecretVersion {

  public static void main(String[] args)throws Exception {
    // TODO(developer): Replace these variables before running the sample.

    // Your GCP project ID.
    String projectId = "your-project-id";
    // Location of the secret.
    String locationId = "your-location-id";
    // Resource ID of the secret.
    String secretId = "your-secret-id";
    // Version of the Secret ID you want to access.
    String versionId = "your-version-id";
    accessRegionalSecretVersion(projectId, locationId, secretId, versionId);
  }

  // Access the payload for the given secret version if one exists. The version
  // can be a version number as a string (e.g. "5") or an alias (e.g. "latest").
  public static SecretPayload accessRegionalSecretVersion(
      String projectId, String locationId, String secretId, String versionId)
      throws Exception {

    // Endpoint to call the regional secret manager sever
    String apiEndpoint = String.format("secretmanager.%s.rep.googleapis.com:443", locationId);
    SecretManagerServiceSettings secretManagerServiceSettings =
        SecretManagerServiceSettings.newBuilder().setEndpoint(apiEndpoint).build();

    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests.
    try (SecretManagerServiceClient client = 
        SecretManagerServiceClient.create(secretManagerServiceSettings)) {
      SecretVersionName secretVersionName = 
          SecretVersionName.ofProjectLocationSecretSecretVersionName(
              projectId, locationId, secretId, versionId);
      // Access the secret version.
      AccessSecretVersionResponse response = client.accessSecretVersion(secretVersionName);

      // Verify checksum. The used library is available in Java 9+.
      // For Java 8, use:
      // https://github.com/google/guava/blob/e62d6a0456420d295089a9c319b7593a3eae4a83/guava/src/com/google/common/hash/Hashing.java#L395
      byte[] data = response.getPayload().getData().toByteArray();
      Checksum checksum = new CRC32C();
      checksum.update(data, 0, data.length);
      if (response.getPayload().getDataCrc32C() != checksum.getValue()) {
        System.out.printf("Data corruption detected.");
        throw new Exception("Data corruption detected.");
      }

      // Print the secret payload.
      //
      // WARNING: Do not print the secret in a production environment - this
      // snippet is showing how to access the secret material.
      // String payload = response.getPayload().getData().toStringUtf8();
      // System.out.printf("Plaintext: %s\n", payload);

      return response.getPayload();
    }
  }
}

Node.js

To learn how to install and use the client library for Secret Manager, see Secret Manager client libraries.

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

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const locationId = 'location-id';
// const secretId = 'my-secret'
// const version = 'secret-version';

const name = `projects/${projectId}/locations/${locationId}/secrets/${secretId}/versions/${version}`;

// Imports the Secret Manager library
const {SecretManagerServiceClient} = require('@google-cloud/secret-manager');

// Adding the endpoint to call the regional secret manager sever
const options = {};
options.apiEndpoint = `secretmanager.${locationId}.rep.googleapis.com`;

// Instantiates a client
const client = new SecretManagerServiceClient(options);

async function accessRegionalSecretVersion() {
  const [version] = await client.accessSecretVersion({
    name: name,
  });

  // Extract the payload as a string.
  const payload = version.payload.data.toString();

  // WARNING: Do not print the secret in a production environment - this
  // snippet is showing how to access the secret material.
  console.info(`Payload: ${payload}`);
}

accessRegionalSecretVersion();

Python

To learn how to install and use the client library for Secret Manager, see Secret Manager client libraries.

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

from google.cloud import secretmanager_v1
import google_crc32c


def access_regional_secret_version(
    project_id: str,
    location_id: str,
    secret_id: str,
    version_id: str,
) -> secretmanager_v1.AccessSecretVersionResponse:
    """
    Access the payload for the given secret version if one exists. The version
    can be a version number as a string (e.g. "5") or an alias (e.g. "latest").
    """

    # Endpoint to call the regional secret manager sever.
    api_endpoint = f"secretmanager.{location_id}.rep.googleapis.com"

    # Create the Secret Manager client.
    client = secretmanager_v1.SecretManagerServiceClient(
        client_options={"api_endpoint": api_endpoint},
    )

    # Build the resource name of the secret version.
    name = f"projects/{project_id}/locations/{location_id}/secrets/{secret_id}/versions/{version_id}"

    # Access the secret version.
    response = client.access_secret_version(request={"name": name})

    # Verify payload checksum.
    crc32c = google_crc32c.Checksum()
    crc32c.update(response.payload.data)
    if response.payload.data_crc32c != int(crc32c.hexdigest(), 16):
        print("Data corruption detected.")
        return response

    # Print the secret payload.
    #
    # WARNING: Do not print the secret in a production environment - this
    # snippet is showing how to access the secret material.
    payload = response.payload.data.decode("UTF-8")
    print(f"Plaintext: {payload}")

    return response

What's next

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