This sample creates a new empty disk in a project in a given zone.

## Code sample

### C++


Before trying this sample, follow the C++ 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 C++ API
reference documentation](https://docs.cloud.google.com/cpp/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).

    namespace compute_disks = ::google::cloud::compute_disks_v1;
    namespace compute_proto = ::google::cloud::cpp::compute::v1;
    using ::google::cloud::make_ready_future;
    using ::google::cloud::StatusOr;

    [](std::string const& project_id, std::string const& zone,
       std::string const& disk_name, std::string const& disk_size_gb,
       std::map<std::string, std::string> const& labels) {
      auto client =
          compute_disks::DisksClient(compute_disks::MakeDisksConnectionRest());
      compute_proto::Disk disk;
      disk.set_name(disk_name);
      disk.set_size_gb(disk_size_gb);
      for (auto const& l : labels) {
        (*disk.mutable_labels())[l.first] = l.second;
      }
      StatusOr<compute_proto::Disk> result =
          client.InsertDisk(project_id, zone, disk)
              .then([client, project_id, zone, disk_name](auto f) mutable {
                StatusOr<compute_proto::Operation> create_result = f.get();
                if (!create_result) {
                  return StatusOr<compute_proto::Disk>(
                      std::move(create_result).status());
                }
                auto get_disk = client.GetDisk(project_id, zone, disk_name);
                return get_disk;
              })
              .get();
      if (!result) throw std::move(result).status();
      std::cout << "Created disk: " << result->DebugString() << "\n";
    }

### 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"
    	"google.golang.org/protobuf/proto"
    )

    // createEmptyDisk creates a new empty disk in a project in given zone.
    func createEmptyDisk(
    	w io.Writer,
    	projectID, zone, diskName, diskType string,
    	diskSizeGb int64,
    ) error {
    	// projectID := "your_project_id"
    	// zone := "us-west3-b" // should match diskType below
    	// diskName := "your_disk_name"
    	// diskType := "zones/us-west3-b/diskTypes/pd-ssd"
    	// diskSizeGb := 120

    	ctx := context.Background()
    	disksClient, err := compute.NewDisksRESTClient(ctx)
    	if err != nil {
    		return fmt.Errorf("NewDisksRESTClient: %w", err)
    	}
    	defer disksClient.Close()

    	req := &computepb.InsertDiskRequest{
    		Project: projectID,
    		Zone:    zone,
    		DiskResource: &computepb.Disk{
    			Name:   proto.String(diskName),
    			Zone:   proto.String(zone),
    			Type:   proto.String(diskType),
    			SizeGb: proto.Int64(diskSizeGb),
    		},
    	}

    	op, err := disksClient.Insert(ctx, req)
    	if err != nil {
    		return fmt.Errorf("unable to create 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 created\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.Disk;
    import com.google.cloud.compute.v1.DisksClient;
    import com.google.cloud.compute.v1.InsertDiskRequest;
    import com.google.cloud.compute.v1.Operation;
    import java.io.IOException;
    import java.util.concurrent.ExecutionException;
    import java.util.concurrent.TimeUnit;
    import java.util.concurrent.TimeoutException;

    public class CreateEmptyDisk {

      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 projectId = "YOUR_PROJECT_ID";

        // Name of the zone in which you want to create the disk.
        String zone = "europe-central2-b";

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

        // The type of disk you want to create. This value uses the following format:
        // "zones/{zone}/diskTypes/(pd-standard|pd-ssd|pd-balanced|pd-extreme)".
        // For example: "zones/us-west3-b/diskTypes/pd-ssd"
        String diskType = String.format("zones/%s/diskTypes/pd-ssd", zone);

        // Size of the new disk in gigabytes.
        long diskSizeGb = 10;

        createEmptyDisk(projectId, zone, diskName, diskType, diskSizeGb);
      }

      // Creates a new empty disk in a project in the given zone.
      public static void createEmptyDisk(String projectId, String zone, String diskName,
          String diskType, long diskSizeGb)
          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 `disksClient.close()` method on the client to safely
        // clean up any remaining background resources.
        try (DisksClient disksClient = DisksClient.create()) {

          // Set the disk properties.
          Disk disk = Disk.newBuilder()
              .setName(diskName)
              .setZone(zone)
              .setType(diskType)
              .setSizeGb(diskSizeGb)
              .build();

          // Create the Insert disk request.
          InsertDiskRequest insertDiskRequest = InsertDiskRequest.newBuilder()
              .setProject(projectId)
              .setZone(zone)
              .setDiskResource(disk)
              .build();

          // Wait for the create disk operation to complete.
          Operation response = disksClient.insertAsync(insertDiskRequest)
              .get(3, TimeUnit.MINUTES);

          if (response.hasError()) {
            System.out.println("Disk creation failed!" + response);
            return;
          }
          System.out.println("Empty disk created. Operation Status: " + response.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 compute_v1


    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 create_empty_disk(
        project_id: str, zone: str, disk_name: str, disk_type: str, disk_size_gb: int
    ) -> compute_v1.Disk:
        """
        Creates a new empty disk in a project in given zone.

        Args:
            project_id: project ID or project number of the Cloud project you want to use.
            zone: name of the zone in which you want to create the disk.
            disk_name: name of the disk you want to create.
            disk_type: the type of disk you want to create. This value uses the following format:
                "zones/{zone}/diskTypes/(pd-standard|pd-ssd|pd-balanced|pd-extreme)".
                For example: "zones/us-west3-b/diskTypes/pd-ssd"
            disk_size_gb: size of the new disk in gigabytes

        Returns:
            An unattached Disk instance.
        """
        disk = compute_v1.Disk()
        disk.size_gb = disk_size_gb
        disk.name = disk_name
        disk.zone = zone
        disk.type_ = disk_type

        disk_client = compute_v1.DisksClient()
        operation = disk_client.insert(project=project_id, zone=zone, disk_resource=disk)

        wait_for_extended_operation(operation, "disk creation")

        return disk_client.get(project=project_id, zone=zone, disk=disk.name)

## 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).