This sample deletes a regional disk from a project.

## Code sample

### Go


Before trying this sample, follow the Go setup instructions in the
[Compute Engine quickstart using
client libraries](https://docs.cloud.google.com/compute/docs/api/using-libraries).


For more information, see the
[Compute Engine Go API
reference documentation](https://docs.cloud.google.com/go/docs/reference/cloud.google.com/go/compute/latest/apiv1).


To authenticate to Compute Engine, set up Application Default Credentials.
For more information, see

[Set up authentication for a local development environment](https://docs.cloud.google.com/docs/authentication/set-up-adc-local-dev-environment).

    import (
    	"context"
    	"fmt"
    	"io"

    	compute "cloud.google.com/go/compute/apiv1"
    	computepb "cloud.google.com/go/compute/apiv1/computepb"
    )

    // deleteRegionalDisk permanently deletes a regional disk.
    func deleteRegionalDisk(w io.Writer, projectID, region, diskName string) error {
    	// projectID := "your_project_id"
    	// region := "us-west3"
    	// diskName := "your_disk_name"

    	ctx := context.Background()
    	disksClient, err := compute.https://docs.cloud.google.com/go/docs/reference/cloud.google.com/go/compute/latest/apiv1.html#cloud_google_com_go_compute_apiv1_RegionDisksClient_NewRegionDisksRESTClient(ctx)
    	if err != nil {
    		return fmt.Errorf("NewDisksRESTClient: %w", err)
    	}
    	defer disksClient.Close()

    	req := &computepb.DeleteRegionDiskRequest{
    		Project: projectID,
    		Region:  region,
    		Disk:    diskName,
    	}

    	op, err := disksClient.Delete(ctx, req)
    	if err != nil {
    		return fmt.Errorf("unable to delete disk: %w", err)
    	}

    	if err = op.Wait(ctx); err != nil {
    		return fmt.Errorf("unable to wait for the operation: %w", err)
    	}

    	fmt.Fprintf(w, "Disk deleted\n")

    	return nil
    }

### Java


Before trying this sample, follow the Java setup instructions in the
[Compute Engine quickstart using
client libraries](https://docs.cloud.google.com/compute/docs/api/using-libraries).


For more information, see the
[Compute Engine Java API
reference documentation](https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/overview).


To authenticate to Compute Engine, set up Application Default Credentials.
For more information, see

[Set up authentication for a local development environment](https://docs.cloud.google.com/docs/authentication/set-up-adc-local-dev-environment).


    import com.google.cloud.compute.v1.https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Operation.html;
    import com.google.cloud.compute.v1.https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.RegionDisksClient.html;
    import java.io.IOException;
    import java.util.concurrent.ExecutionException;
    import java.util.concurrent.TimeUnit;
    import java.util.concurrent.TimeoutException;

    public class RegionalDelete {

      public static void main(String[] args)
          throws IOException, ExecutionException, InterruptedException, TimeoutException {
        // TODO(developer): Replace these variables before running the sample.
        // Project ID or project number of the Cloud project you want to use.
        String project = "YOUR_PROJECT_ID";

        // Name of the region where the disk is located.
        String region = "europe-central2";

        // Name of the disk you want to delete.
        String diskName = "YOUR_DISK_NAME";

        deleteRegionalDisk(project, region, diskName);
      }

      // Deletes a disk from a project.
      public static void deleteRegionalDisk(String project, String region, String diskName)
          throws IOException, ExecutionException, InterruptedException, TimeoutException {
        // Initialize client that will be used to send requests. This client only needs to be created
        // once, and can be reused for multiple requests. After completing all of your requests, call
        // the `regionDisksClient.close()` method on the client to safely
        // clean up any remaining background resources.
        try (https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.RegionDisksClient.html regionDisksClient = https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.RegionDisksClient.html.create()) {

          https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Operation.html operation = regionDisksClient.deleteAsync(project, region, diskName)
              .get(3, TimeUnit.MINUTES);

          if (operation.https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Operation.html#com_google_cloud_compute_v1_Operation_hasError__()) {
            System.out.println("Disk deletion failed!");
            throw new https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Error.html(operation.https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Operation.html#com_google_cloud_compute_v1_Operation_getError__().toString());
          }
          System.out.println("Operation Status: " + operation.https://docs.cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Operation.html#com_google_cloud_compute_v1_Operation_getStatus__());
        }
      }
    }

### Python


Before trying this sample, follow the Python setup instructions in the
[Compute Engine quickstart using
client libraries](https://docs.cloud.google.com/compute/docs/api/using-libraries).


For more information, see the
[Compute Engine Python API
reference documentation](https://docs.cloud.google.com/python/docs/reference/compute/latest).


To authenticate to Compute Engine, set up Application Default Credentials.
For more information, see

[Set up authentication for a local development environment](https://docs.cloud.google.com/docs/authentication/set-up-adc-local-dev-environment).

    from __future__ import annotations

    import sys
    from typing import Any

    from google.api_core.extended_operation import ExtendedOperation
    from google.cloud import https://docs.cloud.google.com/python/docs/reference/compute/latest


    def wait_for_extended_operation(
        operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
    ) -> Any:
        """
        Waits for the extended (long-running) operation to complete.

        If the operation is successful, it will return its result.
        If the operation ends with an error, an exception will be raised.
        If there were any warnings during the execution of the operation
        they will be printed to sys.stderr.

        Args:
            operation: a long-running operation you want to wait on.
            verbose_name: (optional) a more verbose name of the operation,
                used only during error and warning reporting.
            timeout: how long (in seconds) to wait for operation to finish.
                If None, wait indefinitely.

        Returns:
            Whatever the operation.result() returns.

        Raises:
            This method will raise the exception received from `operation.exception()`
            or RuntimeError if there is no exception set, but there is an `error_code`
            set for the `operation`.

            In case of an operation taking longer than `timeout` seconds to complete,
            a `concurrent.futures.TimeoutError` will be raised.
        """
        result = operation.result(timeout=timeout)

        if operation.error_code:
            print(
                f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
                file=sys.stderr,
                flush=True,
            )
            print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
            raise operation.exception() or RuntimeError(operation.error_message)

        if operation.warnings:
            print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
            for warning in operation.warnings:
                print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)

        return result


    def delete_regional_disk(project_id: str, region: str, disk_name: str) -> None:
        """
        Deletes a disk from a project.

        Args:
            project_id: project ID or project number of the Cloud project you want to use.
            region:name of the region where the disk is located.
            disk_name: name of the disk that you want to delete.
        """
        disk_client = https://docs.cloud.google.com/python/docs/reference/compute/latest.https://docs.cloud.google.com/python/docs/reference/compute/latest/google.cloud.compute_v1.services.region_disks.RegionDisksClient.html()
        operation = disk_client.https://docs.cloud.google.com/python/docs/reference/compute/latest/google.cloud.compute_v1.services.region_disks.RegionDisksClient.html#google_cloud_compute_v1_services_region_disks_RegionDisksClient_delete(project=project_id, region=region, disk=disk_name)
        wait_for_extended_operation(operation, "regional disk deletion")

## What's next


To search and filter code samples for other Google Cloud products, see the
[Google Cloud sample browser](https://docs.cloud.google.com/docs/samples?product=computeengine).