77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
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package storage
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import (
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"context"
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"fmt"
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"strings"
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"time"
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"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
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)
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type ObjectInfo struct {
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Size int64
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ETag string
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LastModified time.Time
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}
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func (c *Client) Stat(ctx context.Context, objectKey string) (ObjectInfo, error) {
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if strings.TrimSpace(objectKey) == "" {
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return ObjectInfo{}, fmt.Errorf("对象键不能为空")
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}
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result, err := c.client.GetObjectMeta(ctx, &oss.GetObjectMetaRequest{
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Bucket: oss.Ptr(c.bucket),
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Key: oss.Ptr(objectKey),
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})
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if err != nil {
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return ObjectInfo{}, fmt.Errorf("查询对象元数据: %w", err)
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}
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if result == nil {
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return ObjectInfo{}, fmt.Errorf("对象元数据为空")
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}
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if result.ContentLength < 0 {
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return ObjectInfo{}, fmt.Errorf("对象大小无效: %d", result.ContentLength)
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}
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if result.ETag == nil {
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return ObjectInfo{}, fmt.Errorf("对象 ETag 缺失")
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}
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etag := strings.TrimSpace(strings.Trim(strings.TrimSpace(*result.ETag), "\""))
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if etag == "" {
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return ObjectInfo{}, fmt.Errorf("对象 ETag 无效")
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}
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if result.LastModified == nil || result.LastModified.IsZero() {
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return ObjectInfo{}, fmt.Errorf("对象最后修改时间缺失")
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}
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return ObjectInfo{
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Size: result.ContentLength,
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ETag: etag,
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LastModified: *result.LastModified,
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}, nil
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}
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func (c *Client) Delete(ctx context.Context, objectKey string) error {
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if strings.TrimSpace(objectKey) == "" {
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return fmt.Errorf("对象键不能为空")
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}
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_, err := c.client.DeleteObject(ctx, &oss.DeleteObjectRequest{
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Bucket: oss.Ptr(c.bucket),
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Key: oss.Ptr(objectKey),
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})
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if err != nil {
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return fmt.Errorf("删除对象: %w", err)
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}
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return nil
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}
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func (c *Client) PublicURL(objectKey string) string {
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return strings.TrimRight(c.publicBaseURL, "/") + "/" + strings.TrimLeft(objectKey, "/")
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}
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func (c *Client) Bucket() string {
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return c.bucket
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}
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