删除对象的归档产生版本

删除 Cloud Storage 存储分区中的对象的归档世代。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

代码示例

C#

如需了解详情，请参阅 Cloud Storage C# API 参考文档。 


using Google.Cloud.Storage.V1;
using System;

public class DeleteFileArchivedGenerationSample
{
    public void DeleteFileArchivedGeneration(
        string bucketName = "your-bucket-name",
        string objectName = "your-object-name",
        long? generation = 1579287380533984)
    {
        var storage = StorageClient.Create();

        storage.DeleteObject(bucketName, objectName, new DeleteObjectOptions
        {
            Generation = generation
        });

        Console.WriteLine($"Generation ${generation} of file {objectName} was deleted from bucket {bucketName}.");
    }
}

C++

如需了解详情，请参阅 Cloud Storage C++ API 参考文档。

namespace gcs = ::google::cloud::storage;
[](gcs::Client client, std::string const& bucket_name,
   std::string const& object_name, std::int64_t object_generation) {
  google::cloud::Status status = client.DeleteObject(
      bucket_name, object_name, gcs::Generation{object_generation});
  if (!status.ok()) throw std::runtime_error(status.message());

  std::cout << "Deleted " << object_name << " generation "
            << object_generation << " in bucket " << bucket_name << "\n";
}

Go

如需了解详情，请参阅 Cloud Storage Go API 参考文档。 

import (
	"context"
	"fmt"
	"io"
	"time"

	"cloud.google.com/go/storage"
)

// deleteOldVersionOfObject deletes a noncurrent version of an object.
func deleteOldVersionOfObject(w io.Writer, bucketName, objectName string, gen int64) error {
	// bucketName := "bucket-name"
	// objectName := "object-name"

	// gen is the generation of objectName to delete.
	// gen := 1587012235914578
	ctx := context.Background()
	client, err := storage.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()

	obj := client.Bucket(bucketName).Object(objectName)
	if err := obj.Generation(gen).Delete(ctx); err != nil {
		return fmt.Errorf("Bucket(%q).Object(%q).Generation(%v).Delete: %v", bucketName, objectName, gen, err)
	}
	fmt.Fprintf(w, "Generation %v of object %v was deleted from %v\n", gen, objectName, bucketName)
	return nil
}

Java

如需了解详情，请参阅 Cloud Storage Java API 参考文档。

import com.google.cloud.storage.BlobId;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;

public class DeleteOldVersionOfObject {
  public static void deleteOldVersionOfObject(
      String projectId, String bucketName, String objectName, long generationToDelete) {
    // The ID of your GCP project
    // String projectId = "your-project-id";

    // The ID of your GCS bucket
    // String bucketName = "your-unique-bucket-name";

    // The ID of your GCS object
    // String objectName = "your-object-name";

    // The generation of objectName to delete
    // long generationToDelete = 1579287380533984;

    Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
    storage.delete(BlobId.of(bucketName, objectName, generationToDelete));

    System.out.println(
        "Generation "
            + generationToDelete
            + " of object "
            + objectName
            + " was deleted from "
            + bucketName);
  }
}

Node.js

如需了解详情，请参阅 Cloud Storage Node.js API 参考文档。

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';

// The ID of your GCS file
// const fileName = 'your-file-name';

// The generation of fileName to delete
// const generation = 1579287380533984;

// Imports the Google Cloud client library
const {Storage} = require('@google-cloud/storage');

// Creates a client
const storage = new Storage();

async function deleteOldVersionOfFile() {
  // Deletes the file from the bucket with given version
  await storage
    .bucket(bucketName)
    .file(fileName, {
      generation,
    })
    .delete();

  console.log(
    `Generation ${generation} of file ${fileName} was deleted from ${bucketName}`
  );
}

deleteOldVersionOfFile().catch(console.error);

PHP

如需了解详情，请参阅 Cloud Storage PHP API 参考文档。 

use Google\Cloud\Storage\StorageClient;

/**
 * Delete an archived generation of the given object.
 *
 * @param string $bucketName The name of your Cloud Storage bucket.
 * @param string $objectName The name of your Cloud Storage object.
 * @param string $generationToDelete the generation of the object to delete.
 */
function delete_file_archived_generation($bucketName, $objectName, $generationToDelete)
{
    // $bucketName = 'my-bucket';
    // $objectName = 'my-object';
    // $generationToDelete = 1579287380533984;

    $storage = new StorageClient();
    $bucket = $storage->bucket($bucketName);

    $object = $bucket->object($objectName, [
        'generation' => $generationToDelete,
    ]);

    $object->delete();

    printf(
        'Generation %s of object %s was deleted from %s',
        $generationToDelete,
        $objectName,
        $bucketName
    );
}

Python

如需了解详情，请参阅 Cloud Storage Python API 参考文档。

from google.cloud import storage

def delete_file_archived_generation(bucket_name, blob_name, generation):
    """Delete a blob in the bucket with the given generation."""
    # bucket_name = "your-bucket-name"
    # blob_name = "your-object-name"
    # generation = 1579287380533984

    storage_client = storage.Client()

    bucket = storage_client.get_bucket(bucket_name)
    bucket.delete_blob(blob_name, generation=generation)
    print(
        f"Generation {generation} of blob {blob_name} was deleted from {bucket_name}"
    )

Ruby

如需了解详情，请参阅 Cloud Storage Ruby API 参考文档。 

def delete_file_archived_generation bucket_name:, file_name:, generation:
  # The ID of your GCS bucket
  # bucket_name = "your-unique-bucket-name"

  # The ID of your GCS object
  # file_name = "your-file-name"

  # The generation of the file to delete
  # generation = 1579287380533984

  require "google/cloud/storage"

  storage = Google::Cloud::Storage.new
  bucket = storage.bucket bucket_name, skip_lookup: true

  file = bucket.file file_name

  file.delete generation: generation

  puts "Generation #{generation} of file #{file_name} was deleted from #{bucket_name}"
end

后续步骤

如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅 Google Cloud 示例浏览器。