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resource "google_compute_instance_template" "foobar" {
  name         = "my-instance-template"
  machine_type = "e2-standard-4"

  disk {
    source_image = "debian-cloud/debian-11"
    disk_size_gb = 250
  }

  network_interface {
    network = "default"

    # default access config, defining external IP configuration
    access_config {
      network_tier = "PREMIUM"
    }
  }

  # To avoid embedding secret keys or user credentials in the instances, Google recommends that you use custom service accounts with the following access scopes.
  service_account {
    scopes = [
      "https://www.googleapis.com/auth/cloud-platform"
    ]
  }
}

import (
	"context"
	"fmt"
	"io"

	compute "cloud.google.com/go/compute/apiv1"
	computepb "cloud.google.com/go/compute/apiv1/computepb"
	"google.golang.org/protobuf/proto"
)

// createTemplate creates a new instance template with the provided name and a specific instance configuration.
func createTemplate(w io.Writer, projectID, templateName string) error {
	// projectID := "your_project_id"
	// templateName := "your_template_name"

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

	req := &computepb.InsertInstanceTemplateRequest{
		Project: projectID,
		InstanceTemplateResource: &computepb.InstanceTemplate{
			Name: proto.String(templateName),
			Properties: &computepb.InstanceProperties{
				// The template describes the size and source image of the boot disk
				// to attach to the instance.
				Disks: []*computepb.AttachedDisk{
					{
						InitializeParams: &computepb.AttachedDiskInitializeParams{
							DiskSizeGb:  proto.Int64(250),
							SourceImage: proto.String("projects/debian-cloud/global/images/family/debian-11"),
						},
						AutoDelete: proto.Bool(true),
						Boot:       proto.Bool(true),
					},
				},
				MachineType: proto.String("e2-standard-4"),
				// The template connects the instance to the `default` network,
				// without specifying a subnetwork.
				NetworkInterfaces: []*computepb.NetworkInterface{
					{
						Name: proto.String("global/networks/default"),
						// The template lets the instance use an external IP address.
						AccessConfigs: []*computepb.AccessConfig{
							{
								Name:        proto.String("External NAT"),
								Type:        proto.String(computepb.AccessConfig_ONE_TO_ONE_NAT.String()),
								NetworkTier: proto.String(computepb.AccessConfig_PREMIUM.String()),
							},
						},
					},
				},
			},
		},
	}

	op, err := instanceTemplatesClient.Insert(ctx, req)
	if err != nil {
		return fmt.Errorf("unable to create instance template: %w", err)
	}

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

	fmt.Fprintf(w, "Instance template created\n")

	return nil
}

import com.google.cloud.compute.v1.AccessConfig;
import com.google.cloud.compute.v1.AccessConfig.NetworkTier;
import com.google.cloud.compute.v1.AttachedDisk;
import com.google.cloud.compute.v1.AttachedDiskInitializeParams;
import com.google.cloud.compute.v1.GlobalOperationsClient;
import com.google.cloud.compute.v1.InsertInstanceTemplateRequest;
import com.google.cloud.compute.v1.InstanceProperties;
import com.google.cloud.compute.v1.InstanceTemplate;
import com.google.cloud.compute.v1.InstanceTemplatesClient;
import com.google.cloud.compute.v1.NetworkInterface;
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 CreateInstanceTemplate {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    // TODO(developer): Replace these variables before running the sample.
    // projectId: project ID or project number of the Cloud project you use.
    // templateName: name of the new template to create.
    String projectId = "your-project-id";
    String templateName = "template-name";
    createInstanceTemplate(projectId, templateName);
  }

  /*
    Create a new instance template with the provided name and a specific
    instance configuration.
   */
  public static void createInstanceTemplate(String projectId, String templateName)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    try (InstanceTemplatesClient instanceTemplatesClient = InstanceTemplatesClient.create()) {

      String machineType = "e2-standard-4";
      String sourceImage = "projects/debian-cloud/global/images/family/debian-11";

      // The template describes the size and source image of the boot disk
      // to attach to the instance.
      AttachedDisk attachedDisk = AttachedDisk.newBuilder()
          .setInitializeParams(AttachedDiskInitializeParams.newBuilder()
              .setSourceImage(sourceImage)
              .setDiskType("pd-balanced")
              .setDiskSizeGb(250).build())
          .setAutoDelete(true)
          .setBoot(true).build();

      // The template connects the instance to the `default` network,
      // without specifying a subnetwork.
      NetworkInterface networkInterface = NetworkInterface.newBuilder()
          .setName("global/networks/default")
          // The template lets the instance use an external IP address.
          .addAccessConfigs(AccessConfig.newBuilder()
              .setName("External NAT")
              .setType(AccessConfig.Type.ONE_TO_ONE_NAT.toString())
              .setNetworkTier(NetworkTier.PREMIUM.toString()).build()).build();

      InstanceProperties instanceProperties = InstanceProperties.newBuilder()
          .addDisks(attachedDisk)
          .setMachineType(machineType)
          .addNetworkInterfaces(networkInterface).build();

      InsertInstanceTemplateRequest insertInstanceTemplateRequest = InsertInstanceTemplateRequest
          .newBuilder()
          .setProject(projectId)
          .setInstanceTemplateResource(InstanceTemplate.newBuilder()
              .setName(templateName)
              .setProperties(instanceProperties).build()).build();

      // Create the Instance Template.
      Operation response = instanceTemplatesClient.insertAsync(insertInstanceTemplateRequest)
          .get(3, TimeUnit.MINUTES);

      if (response.hasError()) {
        System.out.println("Instance Template creation failed ! ! " + response);
        return;
      }
      System.out
          .printf("Instance Template Operation Status %s: %s", templateName, response.getStatus());
    }
  }

  public static void createInstanceTemplateWithDiskType(String projectId, String templateName)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    try (InstanceTemplatesClient instanceTemplatesClient = InstanceTemplatesClient.create();
        GlobalOperationsClient globalOperationsClient = GlobalOperationsClient.create()) {

      AttachedDisk disk = AttachedDisk.newBuilder()
          .setInitializeParams(AttachedDiskInitializeParams.newBuilder()
              .setDiskSizeGb(10)
              .setDiskType("pd-balanced")
              .setSourceImage("projects/debian-cloud/global/images/family/debian-11").build())
          .setAutoDelete(true)
          .setBoot(true)
          .setType(AttachedDisk.Type.PERSISTENT.toString()).build();

      InstanceTemplate instanceTemplate = InstanceTemplate.newBuilder()
          .setName(templateName)
          .setProperties(InstanceProperties.newBuilder()
              .setMachineType("n1-standard-1")
              .addDisks(disk)
              .addNetworkInterfaces(NetworkInterface.newBuilder()
                  .setName("global/networks/default").build()).build()).build();

      InsertInstanceTemplateRequest insertInstanceTemplateRequest = InsertInstanceTemplateRequest
          .newBuilder()
          .setProject(projectId)
          .setInstanceTemplateResource(instanceTemplate).build();

      Operation response = instanceTemplatesClient.insertAsync(insertInstanceTemplateRequest)
          .get(3, TimeUnit.MINUTES);

      if (response.hasError()) {
        System.out.println("Instance Template creation failed ! ! " + response);
        return;
      }
      System.out
          .printf("Instance Template Operation Status %s: %s", templateName, response.getStatus());
    }
  }
}

/**
 * TODO(developer): Uncomment and replace these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const templateName = 'your_template_name';

const compute = require('@google-cloud/compute');

// Create a new instance template with the provided name and a specific instance configuration.
async function createTemplate() {
  const instanceTemplatesClient = new compute.InstanceTemplatesClient();

  const [response] = await instanceTemplatesClient.insert({
    project: projectId,
    instanceTemplateResource: {
      name: templateName,
      properties: {
        disks: [
          {
            // The template describes the size and source image of the boot disk
            // to attach to the instance.
            initializeParams: {
              diskSizeGb: '250',
              sourceImage:
                'projects/debian-cloud/global/images/family/debian-11',
            },
            autoDelete: true,
            boot: true,
          },
        ],
        machineType: 'e2-standard-4',
        // The template connects the instance to the `default` network,
        // without specifying a subnetwork.
        networkInterfaces: [
          {
            // Use the network interface provided in the networkName argument.
            name: 'global/networks/default',
            // The template lets the instance use an external IP address.
            accessConfigs: [
              {
                name: 'External NAT',
                type: 'ONE_TO_ONE_NAT',
                networkTier: 'PREMIUM',
              },
            ],
          },
        ],
      },
    },
  });
  let operation = response.latestResponse;
  const operationsClient = new compute.GlobalOperationsClient();

  // Wait for the create operation to complete.
  while (operation.status !== 'DONE') {
    [operation] = await operationsClient.wait({
      operation: operation.name,
      project: projectId,
    });
  }

  console.log('Instance template created.');
}

createTemplate();

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_template(project_id: str, template_name: str) -> compute_v1.InstanceTemplate:
    """
    Create a new instance template with the provided name and a specific
    instance configuration.

    Args:
        project_id: project ID or project number of the Cloud project you use.
        template_name: name of the new template to create.

    Returns:
        InstanceTemplate object that represents the new instance template.
    """
    # The template describes the size and source image of the boot disk
    # to attach to the instance.
    disk = compute_v1.AttachedDisk()
    initialize_params = compute_v1.AttachedDiskInitializeParams()
    initialize_params.source_image = (
        "projects/debian-cloud/global/images/family/debian-11"
    )
    initialize_params.disk_size_gb = 250
    disk.initialize_params = initialize_params
    disk.auto_delete = True
    disk.boot = True

    # The template connects the instance to the `default` network,
    # without specifying a subnetwork.
    network_interface = compute_v1.NetworkInterface()
    network_interface.name = "global/networks/default"

    # The template lets the instance use an external IP address.
    access_config = compute_v1.AccessConfig()
    access_config.name = "External NAT"
    access_config.type_ = "ONE_TO_ONE_NAT"
    access_config.network_tier = "PREMIUM"
    network_interface.access_configs = [access_config]

    template = compute_v1.InstanceTemplate()
    template.name = template_name
    template.properties.disks = [disk]
    template.properties.machine_type = "e2-standard-4"
    template.properties.network_interfaces = [network_interface]

    template_client = compute_v1.InstanceTemplatesClient()
    operation = template_client.insert(
        project=project_id, instance_template_resource=template
    )

    wait_for_extended_operation(operation, "instance template creation")

    return template_client.get(project=project_id, instance_template=template_name)

import (
	"context"
	"fmt"
	"io"

	compute "cloud.google.com/go/compute/apiv1"
	computepb "cloud.google.com/go/compute/apiv1/computepb"
	"google.golang.org/protobuf/proto"
)

// createTemplateFromInstance creates a new instance template based on an existing instance.
// This new template specifies a different boot disk.
func createTemplateFromInstance(w io.Writer, projectID, instance, templateName string) error {
	// projectID := "your_project_id"
	// instance := "projects/project/zones/zone/instances/instance"
	// templateName := "your_template_name"

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

	req := &computepb.InsertInstanceTemplateRequest{
		Project: projectID,
		InstanceTemplateResource: &computepb.InstanceTemplate{
			Name:           proto.String(templateName),
			SourceInstance: proto.String(instance),
			SourceInstanceParams: &computepb.SourceInstanceParams{
				DiskConfigs: []*computepb.DiskInstantiationConfig{
					{
						// Device name must match the name of a disk attached to the instance
						// your template is based on.
						DeviceName: proto.String("disk-1"),
						// Replace the original boot disk image used in your instance with a Rocky Linux image.
						InstantiateFrom: proto.String(computepb.DiskInstantiationConfig_CUSTOM_IMAGE.String()),
						CustomImage:     proto.String("projects/rocky-linux-cloud/global/images/family/rocky-linux-8"),
						// Override the auto_delete setting.
						AutoDelete: proto.Bool(true),
					},
				},
			},
		},
	}

	op, err := instanceTemplatesClient.Insert(ctx, req)
	if err != nil {
		return fmt.Errorf("unable to create instance template: %w", err)
	}

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

	fmt.Fprintf(w, "Instance template created\n")

	return nil
}

import com.google.cloud.compute.v1.DiskInstantiationConfig;
import com.google.cloud.compute.v1.DiskInstantiationConfig.InstantiateFrom;
import com.google.cloud.compute.v1.GlobalOperationsClient;
import com.google.cloud.compute.v1.InsertInstanceTemplateRequest;
import com.google.cloud.compute.v1.InstanceTemplate;
import com.google.cloud.compute.v1.InstanceTemplatesClient;
import com.google.cloud.compute.v1.Operation;
import com.google.cloud.compute.v1.SourceInstanceParams;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class CreateTemplateFromInstance {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    // TODO(developer): Replace these variables before running the sample.
    // projectId: project ID or project number of the Cloud project you use.
    // instance: the instance to base the new template on. This value uses the following format:
    // **NOTE**: "projects/{project}/zones/{zone}/instances/{instance_name}"
    // templateName: name of the new template to create.
    String projectId = "your-project-id";
    String templateName = "template-name";
    String instance = String.format("projects/%s/zones/%s/instances/%s", projectId, "zone",
        "instanceName");
    createTemplateFromInstance(projectId, templateName, instance);
  }

  // Create a new instance template based on an existing instance.
  // This new template specifies a different boot disk.
  public static void createTemplateFromInstance(String projectId, String templateName,
      String instance)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    try (InstanceTemplatesClient instanceTemplatesClient = InstanceTemplatesClient.create();
        GlobalOperationsClient globalOperationsClient = GlobalOperationsClient.create()) {

      SourceInstanceParams sourceInstanceParams = SourceInstanceParams.newBuilder()
          .addDiskConfigs(DiskInstantiationConfig.newBuilder()
              // Device name must match the name of a disk attached to the instance you are
              // basing your template on.
              .setDeviceName("disk-1")
              // Replace the original boot disk image used in your instance
              // with a Rocky Linux image.
              .setInstantiateFrom(InstantiateFrom.CUSTOM_IMAGE.toString())
              .setCustomImage(
                  String.format("projects/%s/global/images/family/%s", "rocky-linux-cloud",
                      "rocky-linux-8"))
              // Override the AutoDelete setting.
              .setAutoDelete(true).build())
          .build();

      InstanceTemplate instanceTemplate = InstanceTemplate.newBuilder()
          .setName(templateName)
          .setSourceInstance(instance)
          .setSourceInstanceParams(sourceInstanceParams)
          .build();

      InsertInstanceTemplateRequest insertInstanceTemplateRequest = InsertInstanceTemplateRequest
          .newBuilder()
          .setProject(projectId)
          .setInstanceTemplateResource(instanceTemplate)
          .build();

      Operation operation = instanceTemplatesClient.insertCallable()
          .futureCall(insertInstanceTemplateRequest).get(3, TimeUnit.MINUTES);

      Operation response = globalOperationsClient.wait(projectId, operation.getName());

      if (response.hasError()) {
        System.out.println("Instance Template creation failed ! ! " + response);
        return;
      }
      System.out.printf("Instance Template creation operation status %s: %s", templateName,
          response.getStatus());
    }
  }
}

/**
 * TODO(developer): Uncomment and replace these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const instance = 'projects/project/zones/zone/instances/instance';
// const templateName = 'your_template_name';

const compute = require('@google-cloud/compute');

// Create a new instance template based on an existing instance.
// This new template specifies a different boot disk.
async function createTemplateFromInstance() {
  const instanceTemplatesClient = new compute.InstanceTemplatesClient();

  const [response] = await instanceTemplatesClient.insert({
    project: projectId,
    instanceTemplateResource: {
      name: templateName,
      sourceInstance: instance,
      sourceInstanceParams: {
        diskConfigs: [
          {
            // Device name must match the name of a disk attached to the instance
            // your template is based on.
            deviceName: 'disk-1',
            // Replace the original boot disk image used in your instance with a Rocky Linux image.
            instantiateFrom: 'CUSTOM_IMAGE',
            customImage:
              'projects/rocky-linux-cloud/global/images/family/rocky-linux-8',
            // Override the auto_delete setting.
            autoDelete: true,
          },
        ],
      },
    },
  });
  let operation = response.latestResponse;
  const operationsClient = new compute.GlobalOperationsClient();

  // Wait for the create operation to complete.
  while (operation.status !== 'DONE') {
    [operation] = await operationsClient.wait({
      operation: operation.name,
      project: projectId,
    });
  }

  console.log('Instance template created.');
}

createTemplateFromInstance();

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_template_from_instance(
    project_id: str, instance: str, template_name: str
) -> compute_v1.InstanceTemplate:
    """
    Create a new instance template based on an existing instance.
    This new template specifies a different boot disk.

    Args:
        project_id: project ID or project number of the Cloud project you use.
        instance: the instance to base the new template on. This value uses
            the following format: "projects/{project}/zones/{zone}/instances/{instance_name}"
        template_name: name of the new template to create.

    Returns:
        InstanceTemplate object that represents the new instance template.
    """
    disk = compute_v1.DiskInstantiationConfig()
    # Device name must match the name of a disk attached to the instance you are
    # basing your template on.
    disk.device_name = "disk-1"
    # Replace the original boot disk image used in your instance with a Rocky Linux image.
    disk.instantiate_from = "CUSTOM_IMAGE"
    disk.custom_image = "projects/rocky-linux-cloud/global/images/family/rocky-linux-8"
    # Override the auto_delete setting.
    disk.auto_delete = True

    template = compute_v1.InstanceTemplate()
    template.name = template_name
    template.source_instance = instance
    template.source_instance_params = compute_v1.SourceInstanceParams()
    template.source_instance_params.disk_configs = [disk]

    template_client = compute_v1.InstanceTemplatesClient()
    operation = template_client.insert(
        project=project_id, instance_template_resource=template
    )

    wait_for_extended_operation(operation, "instance template creation")

    return template_client.get(project=project_id, instance_template=template_name)

resource "google_compute_instance_template" "default" {
  name         = "gpu-template"
  machine_type = "n1-standard-2"

  disk {
    source_image = "debian-cloud/debian-11"
  }

  network_interface {
    network = "default"
  }

  guest_accelerator {
    type  = "nvidia-tesla-t4"
    count = 1
  }

  scheduling {
    on_host_maintenance = "TERMINATE"
  }
}

import (
	"context"
	"fmt"
	"io"

	compute "cloud.google.com/go/compute/apiv1"
	computepb "cloud.google.com/go/compute/apiv1/computepb"
	"google.golang.org/protobuf/proto"
)

// createTemplateWithSubnet creates an instance template that uses a provided subnet.
func createTemplateWithSubnet(w io.Writer, projectID, network, subnetwork, templateName string) error {
	// projectID := "your_project_id"
	// network := "projects/project/global/networks/network"
	// subnetwork := "projects/project/regions/region/subnetworks/subnetwork"
	// templateName := "your_template_name"

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

	req := &computepb.InsertInstanceTemplateRequest{
		Project: projectID,
		InstanceTemplateResource: &computepb.InstanceTemplate{
			Name: proto.String(templateName),
			Properties: &computepb.InstanceProperties{
				// The template describes the size and source image of the boot disk
				// to attach to the instance.
				Disks: []*computepb.AttachedDisk{
					{
						InitializeParams: &computepb.AttachedDiskInitializeParams{
							DiskSizeGb:  proto.Int64(250),
							SourceImage: proto.String("projects/debian-cloud/global/images/family/debian-11"),
						},
						AutoDelete: proto.Bool(true),
						Boot:       proto.Bool(true),
					},
				},
				MachineType: proto.String("e2-standard-4"),
				// The template connects the instance to the specified network and subnetwork.
				NetworkInterfaces: []*computepb.NetworkInterface{
					{
						Network:    proto.String(network),
						Subnetwork: proto.String(subnetwork),
					},
				},
			},
		},
	}

	op, err := instanceTemplatesClient.Insert(ctx, req)
	if err != nil {
		return fmt.Errorf("unable to create instance template: %w", err)
	}

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

	fmt.Fprintf(w, "Instance template created\n")

	return nil
}

import com.google.cloud.compute.v1.AttachedDisk;
import com.google.cloud.compute.v1.AttachedDiskInitializeParams;
import com.google.cloud.compute.v1.GlobalOperationsClient;
import com.google.cloud.compute.v1.InsertInstanceTemplateRequest;
import com.google.cloud.compute.v1.InstanceProperties;
import com.google.cloud.compute.v1.InstanceTemplate;
import com.google.cloud.compute.v1.InstanceTemplatesClient;
import com.google.cloud.compute.v1.NetworkInterface;
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 CreateTemplateWithSubnet {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    /*
    TODO(developer): Replace these variables before running the sample.
    projectId: project ID or project number of the Cloud project you use.
    network: the network to be used in the new template. This value uses
        the following format: "projects/{project}/global/networks/{network}"
    subnetwork: the subnetwork to be used in the new template. This value
        uses the following format: "projects/{project}/regions/{region}/subnetworks/{subnetwork}"
    templateName: name of the new template to create.
    */
    String projectId = "your-project-id";
    String network = String.format("projects/%s/global/networks/%s", projectId, "network");
    String subnetwork = String.format("projects/%s/regions/%s/subnetworks/%s", projectId, "region",
        "subnetwork");
    String templateName = "template-name";
    createTemplateWithSubnet(projectId, network, subnetwork, templateName);
  }

  // Create an instance template that uses a provided subnet.
  public static void createTemplateWithSubnet(String projectId, String network, String subnetwork,
      String templateName)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    try (InstanceTemplatesClient instanceTemplatesClient = InstanceTemplatesClient.create();
        GlobalOperationsClient globalOperationsClient = GlobalOperationsClient.create()) {

      AttachedDisk disk = AttachedDisk.newBuilder()
          .setInitializeParams(AttachedDiskInitializeParams.newBuilder()
              .setSourceImage(
                  String.format("projects/%s/global/images/family/%s", "debian-cloud", "debian-11"))
              .setDiskSizeGb(250).build())
          .setAutoDelete(true)
          .setBoot(true)
          .build();

      InstanceProperties instanceProperties = InstanceProperties.newBuilder()
          .addDisks(disk)
          .setMachineType("e2-standard-4")
          .addNetworkInterfaces(NetworkInterface.newBuilder()
              .setNetwork(network)
              .setSubnetwork(subnetwork).build())
          .build();

      InstanceTemplate instanceTemplate = InstanceTemplate.newBuilder()
          .setName(templateName)
          .setProperties(instanceProperties)
          .build();

      InsertInstanceTemplateRequest insertInstanceTemplateRequest = InsertInstanceTemplateRequest
          .newBuilder()
          .setProject(projectId)
          .setInstanceTemplateResource(instanceTemplate)
          .build();

      Operation operation = instanceTemplatesClient.insertCallable()
          .futureCall(insertInstanceTemplateRequest).get(3, TimeUnit.MINUTES);

      Operation response = globalOperationsClient.wait(projectId, operation.getName());

      if (response.hasError()) {
        System.out.println("Template creation from subnet failed ! ! " + response);
        return;
      }
      System.out.printf("Template creation from subnet operation status %s: %s", templateName,
          response.getStatus());
    }
  }
}

/**
 * TODO(developer): Uncomment and replace these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const network = 'projects/project/global/networks/network';
// const subnetwork = 'projects/project/regions/region/subnetworks/subnetwork';
// const templateName = 'your_template_name';

const compute = require('@google-cloud/compute');

// Create an instance template that uses a provided subnet.
async function createTemplateWithSubnet() {
  const instanceTemplatesClient = new compute.InstanceTemplatesClient();

  const [response] = await instanceTemplatesClient.insert({
    project: projectId,
    instanceTemplateResource: {
      name: templateName,
      properties: {
        // The template describes the size and source image of the boot disk
        // to attach to the instance.
        disks: [
          {
            // The template describes the size and source image of the boot disk
            // to attach to the instance.
            initializeParams: {
              diskSizeGb: '250',
              sourceImage:
                'projects/debian-cloud/global/images/family/debian-11',
            },
            autoDelete: true,
            boot: true,
          },
        ],
        machineType: 'e2-standard-4',
        // The template connects the instance to the specified network and subnetwork.
        networkInterfaces: [
          {
            network,
            subnetwork,
          },
        ],
      },
    },
  });
  let operation = response.latestResponse;
  const operationsClient = new compute.GlobalOperationsClient();

  // Wait for the create operation to complete.
  while (operation.status !== 'DONE') {
    [operation] = await operationsClient.wait({
      operation: operation.name,
      project: projectId,
    });
  }

  console.log('Instance template created.');
}

createTemplateWithSubnet();

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_template_with_subnet(
    project_id: str, network: str, subnetwork: str, template_name: str
) -> compute_v1.InstanceTemplate:
    """
    Create an instance template that uses a provided subnet.

    Args:
        project_id: project ID or project number of the Cloud project you use.
        network: the network to be used in the new template. This value uses
            the following format: "projects/{project}/global/networks/{network}"
        subnetwork: the subnetwork to be used in the new template. This value
            uses the following format: "projects/{project}/regions/{region}/subnetworks/{subnetwork}"
        template_name: name of the new template to create.

    Returns:
        InstanceTemplate object that represents the new instance template.
    """
    # The template describes the size and source image of the book disk to
    # attach to the instance.
    disk = compute_v1.AttachedDisk()
    initialize_params = compute_v1.AttachedDiskInitializeParams()
    initialize_params.source_image = (
        "projects/debian-cloud/global/images/family/debian-11"
    )
    initialize_params.disk_size_gb = 250
    disk.initialize_params = initialize_params
    disk.auto_delete = True
    disk.boot = True

    template = compute_v1.InstanceTemplate()
    template.name = template_name
    template.properties = compute_v1.InstanceProperties()
    template.properties.disks = [disk]
    template.properties.machine_type = "e2-standard-4"

    # The template connects the instance to the specified network and subnetwork.
    network_interface = compute_v1.NetworkInterface()
    network_interface.network = network
    network_interface.subnetwork = subnetwork
    template.properties.network_interfaces = [network_interface]

    template_client = compute_v1.InstanceTemplatesClient()
    operation = template_client.insert(
        project=project_id, instance_template_resource=template
    )
    wait_for_extended_operation(operation, "instance template creation")

    return template_client.get(project=project_id, instance_template=template_name)