使用围棋 V2

IBM Cloud® Object Storage SDK for Go v2 提供了可充分利用 IBM Cloud Object Storage 的功能。

IBM Cloud Object Storage SDK for Go v2 功能全面，许多特性和功能超出了本指南的范围。有关类和方法的详细文档，请参阅 Go API 参考文档。在 GitHub 存储库中可以找到源代码。

获取 SDK

使用 IBM Cloud Object Storage Go SDK v2 的最简单方法是使用 Go 模块来管理依赖关系。如果您不熟悉 Go 模块，可以使用《 Go 模块 5 分钟指南》开始使用。

先决条件

Go 1.23 或更新版本 - SDK 需要 Go 1.23 或更新版本的最低版本
的一个实例 IBM Cloud Object Storage
来自 IBM Cloud Identity and Access Management 至少有 Writer 权限
您正在使用的 IBM Cloud Object Storage 实例的 ID
代币收购终端
服务端点

这些值可通过生成 "服务凭证 " 在 IBM Cloud 控制台中找到。

安装 SDK

使用 go get 可检索 SDK 以将其添加到 GOPATH 工作空间，或检索项目的 Go 模块依赖项。 SDK 需要的 Go 最低版本为 1.23。

go get github.com/IBM/ibm-cos-sdk-go-v2/config
go get github.com/IBM/ibm-cos-sdk-go-v2/service/s3
go get github.com/IBM/ibm-cos-sdk-go-v2/credentials/ibmiam

要更新 SDK，请使用 go get -u 获取 SDK 的最新版本：

go get -u github.com/IBM/ibm-cos-sdk-go-v2/config
go get -u github.com/IBM/ibm-cos-sdk-go-v2/service/s3
go get -u github.com/IBM/ibm-cos-sdk-go-v2/credentials/ibmiam

导入包

安装 SDK 后，需要将所需的包导入到 Go 应用程序才可使用 SDK，如以下示例所示：

import (
    "context"
    "github.com/IBM/ibm-cos-sdk-go-v2/aws"
    "github.com/IBM/ibm-cos-sdk-go-v2/config"
    "github.com/IBM/ibm-cos-sdk-go-v2/credentials/ibmiam"
    "github.com/IBM/ibm-cos-sdk-go-v2/service/s3"
    "github.com/IBM/ibm-cos-sdk-go-v2/service/s3/types"
)

SDK 参考资料

核心类

s3.Client- 主要与以下客户互动 IBM Cloud Object Storage
s3.NewFromConfig- 根据配置创建新的 S3 客户端

凭证

ibmiam.NewStaticCredentials- IBM 用于 API 密钥验证的 IAM 凭据提供商
config.WithCredentialsProvider- 设置证书提供者的配置选项

配置

config.LoadDefaultConfig- 使用指定选项加载 SDK 配置
config.WithRegion- 为客户端设置 AWS 区域
config.WithEndpoint- 设置服务端点 URL

创建客户和采购服务证书

为了连接到 IBM Cloud Object Storage，将通过提供凭证信息（API 密钥和服务实例标识）来创建和配置客户机。这些值还可以自动从凭证文件或环境变量中获取。

通过创建服务凭证或通过 CLI 可以找到凭证。

使用 IBM IAM 身份验证

下面的示例展示了如何使用 IBM IAM 身份验证和 API 密钥创建客户端：

// IBM COS credentials
apiKey := "<API_KEY>"
serviceInstanceID := "<RESOURCE_INSTANCE_ID>"
authEndpoint := "https://iam.cloud.ibm.com/identity/token"
serviceEndpoint := "https://s3.us-south.cloud-object-storage.appdomain.cloud"
region := "us-south"

// Load configuration with IBM IAM credentials
cfg, err := config.LoadDefaultConfig(context.TODO(),
    config.WithCredentialsProvider(
        ibmiam.NewStaticCredentials(authEndpoint, apiKey, serviceInstanceID),
    ),
    config.WithRegion(region),
    config.WithEndpoint(serviceEndpoint),
)
if err != nil {
    log.Fatalf("Failed to load configuration: %v", err)
}

// Create S3 client
client := s3.NewFromConfig(cfg)

所需变量为

apiKey- 您的 IBM Cloud API 密钥，具有适当的权限
serviceInstanceID- IBM Cloud Object Storage 实例的 CRN（云资源名称
authEndpoint- IBM IAM 令牌端点（通常为 https://iam.cloud.ibm.com/identity/token)
serviceEndpoint- IBM Cloud Object Storage 水桶区域的端点 URL
region- 您的水桶所在的地区

代码示例

以下示例假定您已经创建了一个客户端，如上一节所示。

创建存储区

bucketName := "my-new-bucket"

input := &s3.CreateBucketInput{
    Bucket: aws.String(bucketName),
}

_, err = client.CreateBucket(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to create bucket: %v", err)
}

fmt.Printf("Bucket '%s' created successfully\n", bucketName)

列出可用的水桶

result, err := client.ListBuckets(context.TODO(), &s3.ListBucketsInput{})
if err != nil {
    log.Fatalf("Failed to list buckets: %v", err)
}

fmt.Println("Buckets:")
for _, bucket := range result.Buckets {
    fmt.Printf("  - %s (created: %v)\n",
        aws.ToString(bucket.Name),
        bucket.CreationDate,
    )
}

列出带有扩展信息的存储桶

IBM Cloud Object Storage 提供了一种扩展的列表操作，可返回更多的水桶信息：

input := &s3.ListBucketsExtendedInput{
    IBMServiceInstanceId: aws.String(serviceInstanceID),
    Prefix:               aws.String("my-bucket-prefix"),
    MaxKeys:              aws.Int32(100),
}

result, err := client.ListBucketsExtended(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to list buckets: %v", err)
}

fmt.Println("Extended Bucket Information:")
for _, bucket := range result.Buckets {
    fmt.Printf("  Bucket: %s\n", aws.ToString(bucket.Name))
    fmt.Printf("    Location: %s\n", aws.ToString(bucket.LocationConstraint))
    fmt.Printf("    Created: %v\n", bucket.CreationDate)
}

检索水桶的位置

bucketName := "my-bucket"

result, err := client.GetBucketLocation(context.TODO(), &s3.GetBucketLocationInput{
    Bucket: aws.String(bucketName),
})
if err != nil {
    log.Fatalf("Failed to get bucket location: %v", err)
}

fmt.Printf("Bucket '%s' is located in: %s\n",
    bucketName,
    result.LocationConstraint,
)

删除存储区

bucketName := "my-bucket-to-delete"

_, err = client.DeleteBucket(context.TODO(), &s3.DeleteBucketInput{
    Bucket: aws.String(bucketName),
})
if err != nil {
    log.Fatalf("Failed to delete bucket: %v", err)
}

fmt.Printf("Bucket '%s' deleted successfully\n", bucketName)

水桶必须清空后才能删除。

将对象上传到邮筒

bucketName := "my-bucket"
objectKey := "my-object.txt"
content := "Hello, IBM Cloud Object Storage!"

input := &s3.PutObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
    Body:   strings.NewReader(content),
}

result, err := client.PutObject(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to upload object: %v", err)
}

fmt.Printf("Object '%s' uploaded successfully\n", objectKey)
fmt.Printf("ETag: %s\n", aws.ToString(result.ETag))

从邮筒下载对象

bucketName := "my-bucket"
objectKey := "my-object.txt"

result, err := client.GetObject(context.TODO(), &s3.GetObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to download object: %v", err)
}
defer result.Body.Close()

// Read the object content
data, err := io.ReadAll(result.Body)
if err != nil {
    log.Fatalf("Failed to read object data: %v", err)
}

fmt.Printf("Object '%s' downloaded successfully\n", objectKey)
fmt.Printf("Content-Type: %s\n", aws.ToString(result.ContentType))
fmt.Printf("Content-Length: %d bytes\n", result.ContentLength)
fmt.Printf("Content:\n%s\n", string(data))

列出水桶中的对象

bucketName := "my-bucket"

input := &s3.ListObjectsV2Input{
    Bucket:  aws.String(bucketName),
    MaxKeys: aws.Int32(1000),
}

result, err := client.ListObjectsV2(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to list objects: %v", err)
}

fmt.Printf("Objects in bucket '%s':\n", bucketName)
for _, object := range result.Contents {
    fmt.Printf("  - %s (size: %d bytes, modified: %v)\n",
        aws.ToString(object.Key),
        object.Size,
        object.LastModified,
    )
}

fmt.Printf("\nTotal objects: %d\n", len(result.Contents))

复制对象

sourceBucket := "source-bucket"
sourceKey := "source-object.txt"
destinationBucket := "destination-bucket"
destinationKey := "destination-object.txt"

// CopySource format: /source-bucket/source-key
copySource := fmt.Sprintf("/%s/%s", sourceBucket, sourceKey)

input := &s3.CopyObjectInput{
    Bucket:     aws.String(destinationBucket),
    Key:        aws.String(destinationKey),
    CopySource: aws.String(copySource),
}

result, err := client.CopyObject(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to copy object: %v", err)
}

fmt.Printf("Object copied successfully\n")
fmt.Printf("Copy ETag: %s\n", aws.ToString(result.CopyObjectResult.ETag))

删除对象

bucketName := "my-bucket"
objectKey := "object-to-delete.txt"

_, err = client.DeleteObject(context.TODO(), &s3.DeleteObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to delete object: %v", err)
}

fmt.Printf("Object '%s' deleted successfully\n", objectKey)

删除多个对象

bucketName := "my-bucket"
objectsToDelete := []string{
    "object1.txt",
    "object2.txt",
    "object3.txt",
}

// Build delete request
var objects []types.ObjectIdentifier
for _, key := range objectsToDelete {
    objects = append(objects, types.ObjectIdentifier{
        Key: aws.String(key),
    })
}

input := &s3.DeleteObjectsInput{
    Bucket: aws.String(bucketName),
    Delete: &types.Delete{
        Objects: objects,
        Quiet:   aws.Bool(false),
    },
}

result, err := client.DeleteObjects(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to delete objects: %v", err)
}

fmt.Printf("Successfully deleted %d objects\n", len(result.Deleted))
for _, deleted := range result.Deleted {
    fmt.Printf("  - %s\n", aws.ToString(deleted.Key))
}

if len(result.Errors) > 0 {
    fmt.Printf("\nFailed to delete %d objects:\n", len(result.Errors))
    for _, err := range result.Errors {
        fmt.Printf("  - %s: %s\n",
            aws.ToString(err.Key),
            aws.ToString(err.Message),
        )
    }
}

获取对象元数据（HEAD）

bucketName := "my-bucket"
objectKey := "my-object.txt"

result, err := client.HeadObject(context.TODO(), &s3.HeadObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to get object metadata: %v", err)
}

fmt.Printf("Object Metadata for '%s':\n", objectKey)
fmt.Printf("  Content-Type: %s\n", aws.ToString(result.ContentType))
fmt.Printf("  Content-Length: %d bytes\n", result.ContentLength)
fmt.Printf("  ETag: %s\n", aws.ToString(result.ETag))
fmt.Printf("  Last-Modified: %v\n", result.LastModified)

if len(result.Metadata) > 0 {
    fmt.Println("  Custom Metadata:")
    for key, value := range result.Metadata {
        fmt.Printf("    %s: %s\n", key, value)
    }
}

使用分块上传

对于大型对象，多部分上传提高了吞吐量，并能恢复上传。每部分至少 5 MB（最后一部分除外）。

bucketName := "my-bucket"
objectKey := "large-object.dat"

// Step 1: Initiate multipart upload
createResp, err := client.CreateMultipartUpload(context.TODO(),
    &s3.CreateMultipartUploadInput{
        Bucket: aws.String(bucketName),
        Key:    aws.String(objectKey),
    },
)
if err != nil {
    log.Fatalf("Failed to initiate multipart upload: %v", err)
}
uploadID := aws.ToString(createResp.UploadId)
fmt.Printf("Multipart upload initiated with ID: %s\n", uploadID)

// Step 2: Upload parts (minimum 5MB per part except last)
var completedParts []types.CompletedPart
minPartSize := 5 * 1024 * 1024 // 5MB

// Create sample parts
parts := []string{
    strings.Repeat("A", minPartSize),
    strings.Repeat("B", minPartSize),
}

for i, partData := range parts {
    partNumber := int32(i + 1)

    uploadResp, err := client.UploadPart(context.TODO(), &s3.UploadPartInput{
        Bucket:     aws.String(bucketName),
        Key:        aws.String(objectKey),
        PartNumber: aws.Int32(partNumber),
        UploadId:   aws.String(uploadID),
        Body:       strings.NewReader(partData),
    })
    if err != nil {
        // Abort multipart upload on error
        client.AbortMultipartUpload(context.TODO(), &s3.AbortMultipartUploadInput{
            Bucket:   aws.String(bucketName),
            Key:      aws.String(objectKey),
            UploadId: aws.String(uploadID),
        })
        log.Fatalf("Failed to upload part %d: %v", partNumber, err)
    }

    completedParts = append(completedParts, types.CompletedPart{
        ETag:       uploadResp.ETag,
        PartNumber: aws.Int32(partNumber),
    })
    fmt.Printf("Part %d uploaded (ETag: %s)\n", partNumber, aws.ToString(uploadResp.ETag))
}

// Step 3: Complete multipart upload
completeResp, err := client.CompleteMultipartUpload(context.TODO(),
    &s3.CompleteMultipartUploadInput{
        Bucket:   aws.String(bucketName),
        Key:      aws.String(objectKey),
        UploadId: aws.String(uploadID),
        MultipartUpload: &types.CompletedMultipartUpload{
            Parts: completedParts,
        },
    },
)
if err != nil {
    log.Fatalf("Failed to complete multipart upload: %v", err)
}

fmt.Printf("Multipart upload completed successfully\n")
fmt.Printf("Location: %s\n", aws.ToString(completeResp.Location))
fmt.Printf("ETag: %s\n", aws.ToString(completeResp.ETag))

列出多部分上传

bucketName := "my-bucket"

result, err := client.ListMultipartUploads(context.TODO(),
    &s3.ListMultipartUploadsInput{
        Bucket: aws.String(bucketName),
    },
)
if err != nil {
    log.Fatalf("Failed to list multipart uploads: %v", err)
}

fmt.Printf("In-progress multipart uploads in bucket '%s':\n", bucketName)
for _, upload := range result.Uploads {
    fmt.Printf("  Key: %s\n", aws.ToString(upload.Key))
    fmt.Printf("    Upload ID: %s\n", aws.ToString(upload.UploadId))
    fmt.Printf("    Initiated: %v\n", upload.Initiated)
}

设置水桶生命周期配置

归档策略可让您在指定时间段后自动将对象过渡到归档存储类别：

bucketName := "my-bucket"

// Configure lifecycle rule to archive objects after 90 days
input := &s3.PutBucketLifecycleConfigurationInput{
    Bucket: aws.String(bucketName),
    LifecycleConfiguration: &types.BucketLifecycleConfiguration{
        Rules: []types.LifecycleRule{
            {
                ID:     aws.String("archive-rule"),
                Status: types.ExpirationStatusEnabled,
                Filter: &types.LifecycleRuleFilterMemberPrefix{
                    Value: "documents/",
                },
                Transitions: []types.Transition{
                    {
                        Days:         aws.Int32(90),
                        StorageClass: types.TransitionStorageClassGlacier,
                    },
                },
            },
        },
    },
}

_, err = client.PutBucketLifecycleConfiguration(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to set lifecycle configuration: %v", err)
}

fmt.Printf("Lifecycle configuration set for bucket '%s'\n", bucketName)

获取水桶生命周期配置

bucketName := "my-bucket"

result, err := client.GetBucketLifecycleConfiguration(context.TODO(),
    &s3.GetBucketLifecycleConfigurationInput{
        Bucket: aws.String(bucketName),
    },
)
if err != nil {
    log.Fatalf("Failed to get lifecycle configuration: %v", err)
}

fmt.Printf("Lifecycle rules for bucket '%s':\n", bucketName)
for _, rule := range result.Rules {
    fmt.Printf("  Rule ID: %s\n", aws.ToString(rule.ID))
    fmt.Printf("    Status: %s\n", rule.Status)

    for _, transition := range rule.Transitions {
        fmt.Printf("    Transition to %s after %d days\n",
            transition.StorageClass,
            aws.ToInt32(transition.Days),
        )
    }
}

启用水桶版本控制

bucketName := "my-bucket"

// Enable versioning
_, err = client.PutBucketVersioning(context.TODO(), &s3.PutBucketVersioningInput{
    Bucket: aws.String(bucketName),
    VersioningConfiguration: &types.VersioningConfiguration{
        Status: types.BucketVersioningStatusEnabled,
    },
})
if err != nil {
    log.Fatalf("Failed to enable versioning: %v", err)
}

fmt.Printf("Versioning enabled for bucket '%s'\n", bucketName)

列出对象版本

bucketName := "my-bucket"

result, err := client.ListObjectVersions(context.TODO(),
    &s3.ListObjectVersionsInput{
        Bucket: aws.String(bucketName),
    },
)
if err != nil {
    log.Fatalf("Failed to list object versions: %v", err)
}

fmt.Printf("Object versions in bucket '%s':\n", bucketName)
for _, version := range result.Versions {
    fmt.Printf("  Key: %s\n", aws.ToString(version.Key))
    fmt.Printf("    Version ID: %s\n", aws.ToString(version.VersionId))
    fmt.Printf("    Is Latest: %t\n", aws.ToBool(version.IsLatest))
    fmt.Printf("    Last Modified: %v\n", version.LastModified)
}

设置 CORS 配置

bucketName := "my-bucket"

// Set CORS configuration
input := &s3.PutBucketCorsInput{
    Bucket: aws.String(bucketName),
    CORSConfiguration: &types.CORSConfiguration{
        CORSRules: []types.CORSRule{
            {
                AllowedHeaders: []string{"*"},
                AllowedMethods: []string{"GET", "PUT", "POST", "DELETE"},
                AllowedOrigins: []string{"https://example.com"},
                ExposeHeaders:  []string{"ETag"},
                MaxAgeSeconds:  aws.Int32(3000),
            },
        },
    },
}

_, err = client.PutBucketCors(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to set CORS configuration: %v", err)
}

fmt.Printf("CORS configuration set for bucket '%s'\n", bucketName)

设置对象标记

bucketName := "my-bucket"
objectKey := "my-object.txt"

// Set object tags
input := &s3.PutObjectTaggingInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
    Tagging: &types.Tagging{
        TagSet: []types.Tag{
            {
                Key:   aws.String("Department"),
                Value: aws.String("Finance"),
            },
            {
                Key:   aws.String("Project"),
                Value: aws.String("Q4-2024"),
            },
            {
                Key:   aws.String("Classification"),
                Value: aws.String("Confidential"),
            },
        },
    },
}

_, err = client.PutObjectTagging(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to set object tags: %v", err)
}

fmt.Printf("Tags set for object '%s'\n", objectKey)

获取对象标记

bucketName := "my-bucket"
objectKey := "my-object.txt"

result, err := client.GetObjectTagging(context.TODO(), &s3.GetObjectTaggingInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to get object tags: %v", err)
}

fmt.Printf("Tags for object '%s':\n", objectKey)
for _, tag := range result.TagSet {
    fmt.Printf("  %s: %s\n", aws.ToString(tag.Key), aws.ToString(tag.Value))
}

恢复存档对象

必须先还原存档存储类中的对象，然后才能访问它们：

bucketName := "my-bucket"
objectKey := "archived-object.txt"

// Restore object with accelerated retrieval (2 hours)
input := &s3.RestoreObjectInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
    RestoreRequest: &types.RestoreRequest{
        Days: aws.Int32(7), // Number of days to keep restored copy
        GlacierJobParameters: &types.GlacierJobParameters{
            Tier: types.TierAccelerated, // Accelerated (2 hours) or Standard (12 hours)
        },
    },
}

_, err = client.RestoreObject(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to restore object: %v", err)
}

fmt.Printf("Restore request submitted for object '%s'\n", objectKey)
fmt.Println("The object will be available for download in approximately 2 hours")

IBM Cloud Object Storage 支持加速存档，还原时间为 2 小时或 12 小时，具体取决于所选级别。

设置水桶保护配置

IBM Cloud Object Storage 支持不可变 Object Storage，以防止对象被修改或删除：

bucketName := "my-protected-bucket"

// Set protection configuration with default retention period
input := &s3.PutBucketProtectionConfigurationInput{
    Bucket: aws.String(bucketName),
    ProtectionConfiguration: &types.ProtectionConfiguration{
        Status:                            types.BucketProtectionStatusRetention,
        MinimumRetention:                  &types.BucketProtectionMinimumRetention{Days: aws.Int32(90)},
        MaximumRetention:                  &types.BucketProtectionMaximumRetention{Days: aws.Int32(365)},
        DefaultRetention:                  &types.BucketProtectionDefaultRetention{Days: aws.Int32(120)},
        EnablePermanentRetention:          aws.Bool(false),
    },
}

_, err = client.PutBucketProtectionConfiguration(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to set protection configuration: %v", err)
}

fmt.Printf("Protection configuration set for bucket '%s'\n", bucketName)
fmt.Println("Objects will be protected with a default retention of 120 days")

获取水桶保护配置

bucketName := "my-protected-bucket"

result, err := client.GetBucketProtectionConfiguration(context.TODO(),
    &s3.GetBucketProtectionConfigurationInput{
        Bucket: aws.String(bucketName),
    },
)
if err != nil {
    log.Fatalf("Failed to get protection configuration: %v", err)
}

fmt.Printf("Protection configuration for bucket '%s':\n", bucketName)
fmt.Printf("  Status: %s\n", result.ProtectionConfiguration.Status)
fmt.Printf("  Minimum Retention: %d days\n",
    aws.ToInt32(result.ProtectionConfiguration.MinimumRetention.Days))
fmt.Printf("  Maximum Retention: %d days\n",
    aws.ToInt32(result.ProtectionConfiguration.MaximumRetention.Days))
fmt.Printf("  Default Retention: %d days\n",
    aws.ToInt32(result.ProtectionConfiguration.DefaultRetention.Days))

为对象添加法律保留

无论保留期限长短，法律保留都会阻止删除或修改对象：

bucketName := "my-protected-bucket"
objectKey := "important-document.pdf"
legalHoldID := "legal-case-2024-001"

// Add legal hold to the object
_, err = client.AddLegalHold(context.TODO(), &s3.AddLegalHoldInput{
    Bucket:               aws.String(bucketName),
    Key:                  aws.String(objectKey),
    RetentionLegalHoldId: aws.String(legalHoldID),
})
if err != nil {
    log.Fatalf("Failed to add legal hold: %v", err)
}

fmt.Printf("Legal hold '%s' added to object '%s'\n", legalHoldID, objectKey)
fmt.Println("The object cannot be deleted or modified until the legal hold is removed")

水桶必须启用对象锁，才能使用合法保持。

列出对象的合法持有状态

bucketName := "my-protected-bucket"
objectKey := "important-document.pdf"

// List legal holds
result, err := client.ListLegalHolds(context.TODO(), &s3.ListLegalHoldsInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to list legal holds: %v", err)
}

fmt.Printf("Legal holds on object '%s':\n", objectKey)
if len(result.LegalHolds) == 0 {
    fmt.Println("  No legal holds")
} else {
    for _, hold := range result.LegalHolds {
        fmt.Printf("  - ID: %s\n", aws.ToString(hold.ID))
        fmt.Printf("    Date: %v\n", hold.Date)
    }
}

从对象中删除合法持有

bucketName := "my-protected-bucket"
objectKey := "important-document.pdf"
legalHoldID := "legal-case-2024-001"

// Delete legal hold
_, err = client.DeleteLegalHold(context.TODO(), &s3.DeleteLegalHoldInput{
    Bucket:               aws.String(bucketName),
    Key:                  aws.String(objectKey),
    RetentionLegalHoldId: aws.String(legalHoldID),
})
if err != nil {
    log.Fatalf("Failed to delete legal hold: %v", err)
}

fmt.Printf("Legal hold '%s' removed from object '%s'\n", legalHoldID, objectKey)

设置对象保留时间

bucketName := "my-protected-bucket"
objectKey := "important-document.pdf"

// Set retention until a specific date
retainUntilDate := time.Now().AddDate(0, 6, 0) // 6 months from now

input := &s3.PutObjectRetentionInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
    Retention: &types.ObjectLockRetention{
        Mode:            types.ObjectLockRetentionModeCompliance,
        RetainUntilDate: aws.Time(retainUntilDate),
    },
}

_, err = client.PutObjectRetention(context.TODO(), input)
if err != nil {
    log.Fatalf("Failed to set object retention: %v", err)
}

fmt.Printf("Retention set for object '%s' until %v\n", objectKey, retainUntilDate)

获取对象保留

bucketName := "my-protected-bucket"
objectKey := "important-document.pdf"

result, err := client.GetObjectRetention(context.TODO(), &s3.GetObjectRetentionInput{
    Bucket: aws.String(bucketName),
    Key:    aws.String(objectKey),
})
if err != nil {
    log.Fatalf("Failed to get object retention: %v", err)
}

fmt.Printf("Retention for object '%s':\n", objectKey)
fmt.Printf("  Mode: %s\n", result.Retention.Mode)
fmt.Printf("  Retain Until: %v\n", result.Retention.RetainUntilDate)

后续步骤

查看 Go API 参考文档，了解所有可用方法和类型的详细信息
访问 GitHub 软件库，查看更多示例和源代码
如果您是从以下版本升级，请阅读迁移指南 v1
查看 IBM Cloud Object Storage 文档，了解特定服务的功能和最佳实践
寻求帮助和支持：
- 在 Stack Overflow 上提问，标签为 ibm 和 object-storage
- 在 GitHub
- 联系 IBM Cloud 支持

使用围棋 V2

使用围棋 V2

最新消息 v2

获取 SDK

先决条件

安装 SDK

导入包

SDK 参考资料

核心类

凭证

配置

创建客户和采购服务证书

使用 IBM IAM 身份验证

代码示例

创建存储区

列出可用的水桶

列出带有扩展信息的存储桶

检索水桶的位置

删除存储区

将对象上传到邮筒

从邮筒下载对象

列出水桶中的对象

复制对象

删除对象

删除多个对象

获取对象元数据（HEAD）

使用分块上传

列出多部分上传

设置水桶生命周期配置

获取水桶生命周期配置

启用水桶版本控制

列出对象版本

设置 CORS 配置

设置对象标记

获取对象标记

恢复存档对象

设置水桶保护配置

获取水桶保护配置

为对象添加法律保留

列出对象的合法持有状态

从对象中删除合法持有

设置对象保留时间

获取对象保留

后续步骤