fix: 初验针对修改

internal/storage/aliyun/client.go

@@ -0,0 +1,31 @@
+package aliyun
+
+import (
+	"git.apinb.com/ops/files/internal/config"
+	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
+	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
+)
+
+type Client struct {
+	client     *oss.Client
+	bucket     string
+	presignTTL int64
+}
+
+func New(cfg config.AliyunStorageConf, accessTTLSeconds int64) (*Client, error) {
+	ossConfig := oss.LoadDefaultConfig().
+		WithRegion(cfg.Region).
+		WithEndpoint(cfg.Endpoint).
+		WithCredentialsProvider(credentials.NewStaticCredentialsProvider(cfg.AccessKeyID, cfg.AccessKeySecret)).
+		WithSignatureVersion(oss.SignatureVersionV4)
+
+	return &Client{
+		client:     oss.NewClient(ossConfig),
+		bucket:     cfg.Bucket,
+		presignTTL: accessTTLSeconds,
+	}, nil
+}
+
+func (c *Client) Provider() string { return "aliyun" }
+
+func (c *Client) Container() string { return c.bucket }

internal/storage/aliyun/object.go

@@ -0,0 +1,99 @@
+package aliyun
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+
+	"git.apinb.com/ops/files/internal/storage"
+	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
+)
+
+// Open 返回对象存储中的只读内容流。
+func (c *Client) Open(ctx context.Context, objectKey string, byteRange *storage.ByteRange) (io.ReadCloser, error) {
+	if strings.TrimSpace(objectKey) == "" {
+		return nil, fmt.Errorf("对象键不能为空")
+	}
+	request := &oss.GetObjectRequest{
+		Bucket: oss.Ptr(c.bucket),
+		Key:    oss.Ptr(objectKey),
+	}
+	if byteRange != nil {
+		rangeHeader := fmt.Sprintf("bytes=%d-%d", byteRange.Start, byteRange.End)
+		request.Range = &rangeHeader
+	}
+	result, err := c.client.GetObject(ctx, request)
+	if err != nil {
+		return nil, fmt.Errorf("读取对象: %w", err)
+	}
+	if result == nil || result.Body == nil {
+		return nil, fmt.Errorf("对象内容为空")
+	}
+	return result.Body, nil
+}
+
+func (c *Client) Stat(ctx context.Context, objectKey string) (storage.ObjectInfo, error) {
+	if strings.TrimSpace(objectKey) == "" {
+		return storage.ObjectInfo{}, fmt.Errorf("对象键不能为空")
+	}
+
+	result, err := c.client.GetObjectMeta(ctx, &oss.GetObjectMetaRequest{
+		Bucket: oss.Ptr(c.bucket),
+		Key:    oss.Ptr(objectKey),
+	})
+	if err != nil {
+		var serviceError *oss.ServiceError
+		if errors.As(err, &serviceError) && serviceError.Code == "NoSuchKey" {
+			return storage.ObjectInfo{}, storage.ErrObjectNotFound
+		}
+		return storage.ObjectInfo{}, fmt.Errorf("查询对象元数据: %w", err)
+	}
+	if result == nil {
+		return storage.ObjectInfo{}, fmt.Errorf("对象元数据为空")
+	}
+	if result.ContentLength < 0 {
+		return storage.ObjectInfo{}, fmt.Errorf("对象大小无效: %d", result.ContentLength)
+	}
+	if result.ETag == nil {
+		return storage.ObjectInfo{}, fmt.Errorf("对象 ETag 缺失")
+	}
+	etag := strings.TrimSpace(strings.Trim(strings.TrimSpace(*result.ETag), "\""))
+	if etag == "" {
+		return storage.ObjectInfo{}, fmt.Errorf("对象 ETag 无效")
+	}
+	if result.LastModified == nil || result.LastModified.IsZero() {
+		return storage.ObjectInfo{}, fmt.Errorf("对象最后修改时间缺失")
+	}
+
+	return storage.ObjectInfo{
+		Size:         result.ContentLength,
+		StorageETag:  etag,
+		LastModified: *result.LastModified,
+	}, nil
+}
+
+func (c *Client) Delete(ctx context.Context, objectKey string) error {
+	if strings.TrimSpace(objectKey) == "" {
+		return fmt.Errorf("对象键不能为空")
+	}
+
+	_, err := c.client.DeleteObject(ctx, &oss.DeleteObjectRequest{
+		Bucket: oss.Ptr(c.bucket),
+		Key:    oss.Ptr(objectKey),
+	})
+	if err != nil {
+		return fmt.Errorf("删除对象: %w", err)
+	}
+
+	return nil
+}
+
+func (c *Client) Status(ctx context.Context) (storage.RuntimeStatus, error) {
+	_, err := c.client.ListObjectsV2(ctx, &oss.ListObjectsV2Request{Bucket: oss.Ptr(c.bucket), MaxKeys: 1})
+	if err != nil {
+		return storage.RuntimeStatus{Provider: c.Provider(), Container: c.Container()}, fmt.Errorf("检查 OSS 存储状态: %w", err)
+	}
+	return storage.RuntimeStatus{Provider: c.Provider(), Container: c.Container(), Writable: true}, nil
+}

internal/storage/aliyun/upload.go

@@ -0,0 +1,37 @@
+package aliyun
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	"git.apinb.com/ops/files/internal/storage"
+	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
+)
+
+func (c *Client) PrepareUpload(ctx context.Context, request storage.UploadRequest) (storage.UploadInstruction, error) {
+	if strings.TrimSpace(request.ObjectKey) == "" {
+		return storage.UploadInstruction{}, fmt.Errorf("对象键不能为空")
+	}
+	if strings.TrimSpace(request.ContentType) == "" {
+		return storage.UploadInstruction{}, fmt.Errorf("内容类型不能为空")
+	}
+
+	result, err := c.client.Presign(ctx, &oss.PutObjectRequest{
+		Bucket:          oss.Ptr(c.bucket),
+		Key:             oss.Ptr(request.ObjectKey),
+		ContentType:     oss.Ptr(request.ContentType),
+		ForbidOverwrite: oss.Ptr("true"),
+	}, oss.PresignExpires(time.Duration(c.presignTTL)*time.Second))
+	if err != nil {
+		return storage.UploadInstruction{}, fmt.Errorf("生成上传预签名: %w", err)
+	}
+
+	return storage.UploadInstruction{
+		Method:    result.Method,
+		URL:       result.URL,
+		Headers:   result.SignedHeaders,
+		ExpiresAt: result.Expiration,
+	}, nil
+}