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深入探索

如需包含這個程式碼範例的詳細說明文件，請參閱下列內容：

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程式碼範例

C#

在試用這個範例之前，請先按照C#「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine C# API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

using Google.Cloud.Compute.V1;
using System.Threading.Tasks;

public class DeleteFirewallRuleAsyncSample
{
    public async Task DeleteFirewallRuleAsync(
        // TODO(developer): Set your own default values for these parameters or pass different values when calling this method.
        string projectId = "your-project-id",
        string firewallRuleName = "my-test-firewall-rule")
    {

        // Initialize client that will be used to send requests. This client only needs to be created
        // once, and can be reused for multiple requests.
        FirewallsClient client = await FirewallsClient.CreateAsync();

        // Make the request to delete the firewall rule.
        var firewallRuleDeletion = await client.DeleteAsync(projectId, firewallRuleName);

        // Wait for the operation to complete using client-side polling.
        await firewallRuleDeletion.PollUntilCompletedAsync();
    }
}

Go

在試用這個範例之前，請先按照Go「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Go API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

import (
	"context"
	"fmt"
	"io"

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

// deleteFirewallRule deletes a firewall rule from the project.
func deleteFirewallRule(w io.Writer, projectID, firewallRuleName string) error {
	// projectID := "your_project_id"
	// firewallRuleName := "europe-central2-b"

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

	req := &computepb.DeleteFirewallRequest{
		Project:  projectID,
		Firewall: firewallRuleName,
	}

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

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

	fmt.Fprintf(w, "Firewall rule deleted\n")

	return nil
}

Java

在試用這個範例之前，請先按照Java「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Java API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.compute.v1.FirewallsClient;
import com.google.cloud.compute.v1.Operation;
import java.io.IOException;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class DeleteFirewallRule {

  public static void main(String[] args)
      throws IOException, ExecutionException, InterruptedException, TimeoutException {
    // TODO(developer): Replace these variables before running the sample
    // project: project ID or project number of the Cloud project you want to use.
    // firewallRuleName: name of the firewall rule you want to delete.
    String project = "your-project-id";
    String firewallRuleName = "firewall-rule-name-" + UUID.randomUUID();
    deleteFirewallRule(project, firewallRuleName);
  }


  // Deletes a firewall rule from the project.
  public static void deleteFirewallRule(String project, String firewallRuleName)
      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 `firewallsClient.close()` method on the client to safely
       clean up any remaining background resources. */
    try (FirewallsClient firewallsClient = FirewallsClient.create()) {

      OperationFuture<Operation, Operation> operation = firewallsClient.deleteAsync(project,
          firewallRuleName);
      operation.get(3, TimeUnit.MINUTES);

      System.out.println("Deleted firewall rule -> " + firewallRuleName);
    }
  }
}

Node.js

在試用這個範例之前，請先按照Node.js「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Node.js API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

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

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

async function deleteFirewallRule() {
  const firewallsClient = new compute.FirewallsClient();
  const operationsClient = new compute.GlobalOperationsClient();

  const [response] = await firewallsClient.delete({
    project: projectId,
    firewall: firewallRuleName,
  });
  let operation = response.latestResponse;

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

  console.log('Firewall rule deleted');
}

deleteFirewallRule();

PHP

在試用這個範例之前，請先按照PHP「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine PHP API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

use Google\Cloud\Compute\V1\Client\FirewallsClient;
use Google\Cloud\Compute\V1\DeleteFirewallRequest;

/**
 * Delete a firewall rule from the specified project.
 *
 * @param string $projectId Project ID or project number of the Cloud project you want to delete a rule for.
 * @param string $firewallRuleName Name of the rule that is deleted.
 *
 * @throws \Google\ApiCore\ApiException if the remote call fails.
 * @throws \Google\ApiCore\ValidationException if local error occurs before remote call.
 */
function delete_firewall_rule(string $projectId, string $firewallRuleName)
{
    $firewallsClient = new FirewallsClient();

    // Delete the firewall rule using Firewalls Client.
    $request = (new DeleteFirewallRequest())
        ->setFirewall($firewallRuleName)
        ->setProject($projectId);
    $operation = $firewallsClient->delete($request);

    // Wait for the operation to complete.
    $operation->pollUntilComplete();
    if ($operation->operationSucceeded()) {
        printf('Rule %s deleted successfully!' . PHP_EOL, $firewallRuleName);
    } else {
        $error = $operation->getError();
        printf('Failed to delete firewall rule: %s' . PHP_EOL, $error?->getMessage());
    }
}

Python

在試用這個範例之前，請先按照Python「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Python API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

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 delete_firewall_rule(project_id: str, firewall_rule_name: str) -> None:
    """
    Deletes a firewall rule from the project.

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        firewall_rule_name: name of the firewall rule you want to delete.
    """
    firewall_client = compute_v1.FirewallsClient()
    operation = firewall_client.delete(project=project_id, firewall=firewall_rule_name)

    wait_for_extended_operation(operation, "firewall rule deletion")

Ruby

在試用這個範例之前，請先按照Ruby「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Ruby API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

require "google/cloud/compute/v1"

# Deletes a firewall rule from the project.
#
# @param [String] project project ID or project number of the Cloud project you want to use.
# @param [String] name name of the firewall rule you want to delete.
def delete_firewall_rule project:, name:
  client = ::Google::Cloud::Compute::V1::Firewalls::Rest::Client.new
  operation = client.delete project: project, firewall: name

  wait_until_done operation: operation
end

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽器。