IAM revoke access with regional secret

Revokes access of an IAM for a regional secret

Explore further

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

• Manage access to regional secrets

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"
	"io"

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

// iamRevokeAccess revokes the given member's access on the secret.
func IamRevokeAccessWithRegionalSecret(w io.Writer, projectId, locationId, secretId, member string) error {
	// name := "projects/my-project/locations/my-location/secrets/my-secret"
	// member := "user:[e-mail]"

	// Create the client.
	ctx := context.Background()
	//Endpoint to send the request to regional server
	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 regional secretmanager client: %w", err)
	}
	defer client.Close()

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

	// Get the current IAM policy.
	handle := client.IAM(name)
	policy, err := handle.Policy(ctx)
	if err != nil {
		return fmt.Errorf("failed to get policy: %w", err)
	}

	// Grant the member access permissions.
	policy.Remove(member, "roles/secretmanager.secretAccessor")
	if err = handle.SetPolicy(ctx, policy); err != nil {
		return fmt.Errorf("failed to save policy: %w", err)
	}

	fmt.Fprintf(w, "Updated IAM policy for %s\n", name)
	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.SecretManagerServiceClient;
import com.google.cloud.secretmanager.v1.SecretManagerServiceSettings;
import com.google.cloud.secretmanager.v1.SecretName;
import com.google.iam.v1.Binding;
import com.google.iam.v1.GetIamPolicyRequest;
import com.google.iam.v1.Policy;
import com.google.iam.v1.SetIamPolicyRequest;
import java.io.IOException;

public class IamRevokeAccessWithRegionalSecret {

  public static void main(String[] args) throws IOException {
    // 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 to revoke access to.
    String secretId = "your-secret-id";
    // IAM member, such as a user group or service account you want to revoke access.
    String member = "user:[e-mail]";
    iamRevokeAccessWithRegionalSecret(projectId, locationId, secretId, member);
  }

  // Revoke a member access to a particular secret.
  public static Policy iamRevokeAccessWithRegionalSecret(
      String projectId, String locationId, String secretId, String member)
      throws IOException {

    // 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 the 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)) {
      // Build the name from the version.
      SecretName secretName = 
          SecretName.ofProjectLocationSecretName(projectId, locationId, secretId);

      // Request the current IAM policy.
      Policy policy =
          client.getIamPolicy(
              GetIamPolicyRequest.newBuilder().setResource(secretName.toString()).build());

      // Search through bindings and remove matches.
      String roleToFind = "roles/secretmanager.secretAccessor";
      for (Binding binding : policy.getBindingsList()) {
        if (binding.getRole() == roleToFind && binding.getMembersList().contains(member)) {
          binding.getMembersList().remove(member);
        }
      }

      // Save the updated IAM policy.
      Policy updatedPolicy = client.setIamPolicy(
          SetIamPolicyRequest.newBuilder()
              .setResource(secretName.toString())
              .setPolicy(policy)
              .build());

      System.out.printf("Updated IAM policy for %s\n", secretId);

      return updatedPolicy;
    }
  }
}

What's next

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