192 lines
7.5 KiB
Go
192 lines
7.5 KiB
Go
package cos
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import (
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"context"
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"encoding/xml"
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"errors"
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"fmt"
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"io"
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"net/http"
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)
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// InitiateMultipartUploadOptions is the option of InitateMultipartUpload
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type InitiateMultipartUploadOptions struct {
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*ACLHeaderOptions
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*ObjectPutHeaderOptions
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}
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// InitiateMultipartUploadResult is the result of InitateMultipartUpload
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type InitiateMultipartUploadResult struct {
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XMLName xml.Name `xml:"InitiateMultipartUploadResult"`
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Bucket string
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Key string
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UploadID string `xml:"UploadId"`
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}
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// InitiateMultipartUpload 请求实现初始化分片上传，成功执行此请求以后会返回Upload ID用于后续的Upload Part请求。
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//
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// https://www.qcloud.com/document/product/436/7746
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func (s *ObjectService) InitiateMultipartUpload(ctx context.Context, name string, opt *InitiateMultipartUploadOptions) (*InitiateMultipartUploadResult, *Response, error) {
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var res InitiateMultipartUploadResult
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sendOpt := sendOptions{
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baseURL: s.client.BaseURL.BucketURL,
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uri: "/" + encodeURIComponent(name) + "?uploads",
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method: http.MethodPost,
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optHeader: opt,
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result: &res,
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}
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resp, err := s.client.send(ctx, &sendOpt)
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return &res, resp, err
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}
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// ObjectUploadPartOptions is the options of upload-part
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type ObjectUploadPartOptions struct {
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Expect string `header:"Expect,omitempty" url:"-"`
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XCosContentSHA1 string `header:"x-cos-content-sha1" url:"-"`
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ContentLength int `header:"Content-Length,omitempty" url:"-"`
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}
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// UploadPart 请求实现在初始化以后的分块上传，支持的块的数量为1到10000，块的大小为1 MB 到5 GB。
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// 在每次请求Upload Part时候，需要携带partNumber和uploadID，partNumber为块的编号，支持乱序上传。
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//
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// 当传入uploadID和partNumber都相同的时候，后传入的块将覆盖之前传入的块。当uploadID不存在时会返回404错误，NoSuchUpload.
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//
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// 当 r 不是 bytes.Buffer/bytes.Reader/strings.Reader 时，必须指定 opt.ContentLength
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//
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// https://www.qcloud.com/document/product/436/7750
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func (s *ObjectService) UploadPart(ctx context.Context, name, uploadID string, partNumber int, r io.Reader, opt *ObjectUploadPartOptions) (*Response, error) {
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u := fmt.Sprintf("/%s?partNumber=%d&uploadId=%s", encodeURIComponent(name), partNumber, uploadID)
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sendOpt := sendOptions{
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baseURL: s.client.BaseURL.BucketURL,
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uri: u,
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method: http.MethodPut,
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optHeader: opt,
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body: r,
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}
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resp, err := s.client.send(ctx, &sendOpt)
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return resp, err
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}
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// ObjectListPartsOptions is the option of ListParts
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type ObjectListPartsOptions struct {
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EncodingType string `url:"Encoding-type,omitempty"`
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MaxParts string `url:"max-parts,omitempty"`
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PartNumberMarker string `url:"part-number-marker,omitempty"`
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}
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// ObjectListPartsResult is the result of ListParts
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type ObjectListPartsResult struct {
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XMLName xml.Name `xml:"ListPartsResult"`
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Bucket string
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EncodingType string `xml:"Encoding-type,omitempty"`
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Key string
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UploadID string `xml:"UploadId"`
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Initiator *Initiator `xml:"Initiator,omitempty"`
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Owner *Owner `xml:"Owner,omitempty"`
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StorageClass string
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PartNumberMarker string
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NextPartNumberMarker string `xml:"NextPartNumberMarker,omitempty"`
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MaxParts string
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IsTruncated bool
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Parts []Object `xml:"Part,omitempty"`
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}
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// ListParts 用来查询特定分块上传中的已上传的块。
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//
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// https://www.qcloud.com/document/product/436/7747
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func (s *ObjectService) ListParts(ctx context.Context, name, uploadID string, opt *ObjectListPartsOptions) (*ObjectListPartsResult, *Response, error) {
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u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
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var res ObjectListPartsResult
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sendOpt := sendOptions{
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baseURL: s.client.BaseURL.BucketURL,
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uri: u,
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method: http.MethodGet,
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result: &res,
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optQuery: opt,
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}
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resp, err := s.client.send(ctx, &sendOpt)
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return &res, resp, err
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}
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// CompleteMultipartUploadOptions is the option of CompleteMultipartUpload
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type CompleteMultipartUploadOptions struct {
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XMLName xml.Name `xml:"CompleteMultipartUpload"`
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Parts []Object `xml:"Part"`
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}
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// CompleteMultipartUploadResult is the result CompleteMultipartUpload
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type CompleteMultipartUploadResult struct {
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XMLName xml.Name `xml:"CompleteMultipartUploadResult"`
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Location string
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Bucket string
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Key string
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ETag string
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}
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// ObjectList can used for sort the parts which needs in complete upload part
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// sort.Sort(cos.ObjectList(opt.Parts))
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type ObjectList []Object
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func (o ObjectList) Len() int {
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return len(o)
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}
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func (o ObjectList) Swap(i, j int) {
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o[i], o[j] = o[j], o[i]
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}
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func (o ObjectList) Less(i, j int) bool { // rewrite the Less method from small to big
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return o[i].PartNumber < o[j].PartNumber
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}
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// CompleteMultipartUpload 用来实现完成整个分块上传。当您已经使用Upload Parts上传所有块以后，你可以用该API完成上传。
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// 在使用该API时，您必须在Body中给出每一个块的PartNumber和ETag，用来校验块的准确性。
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//
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// 由于分块上传的合并需要数分钟时间，因而当合并分块开始的时候，COS就立即返回200的状态码，在合并的过程中，
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// COS会周期性的返回空格信息来保持连接活跃，直到合并完成，COS会在Body中返回合并后块的内容。
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//
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// 当上传块小于1 MB的时候，在调用该请求时，会返回400 EntityTooSmall；
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// 当上传块编号不连续的时候，在调用该请求时，会返回400 InvalidPart；
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// 当请求Body中的块信息没有按序号从小到大排列的时候，在调用该请求时，会返回400 InvalidPartOrder；
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// 当UploadId不存在的时候，在调用该请求时，会返回404 NoSuchUpload。
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//
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// 建议您及时完成分块上传或者舍弃分块上传，因为已上传但是未终止的块会占用存储空间进而产生存储费用。
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//
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// https://www.qcloud.com/document/product/436/7742
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func (s *ObjectService) CompleteMultipartUpload(ctx context.Context, name, uploadID string, opt *CompleteMultipartUploadOptions) (*CompleteMultipartUploadResult, *Response, error) {
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u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
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var res CompleteMultipartUploadResult
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sendOpt := sendOptions{
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baseURL: s.client.BaseURL.BucketURL,
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uri: u,
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method: http.MethodPost,
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body: opt,
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result: &res,
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}
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resp, err := s.client.send(ctx, &sendOpt)
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// If the error occurs during the copy operation, the error response is embedded in the 200 OK response. This means that a 200 OK response can contain either a success or an error.
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if err == nil && resp.StatusCode == 200 {
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if res.ETag == "" {
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return &res, resp, errors.New("response 200 OK, but body contains an error")
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}
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}
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return &res, resp, err
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}
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// AbortMultipartUpload 用来实现舍弃一个分块上传并删除已上传的块。当您调用Abort Multipart Upload时，
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// 如果有正在使用这个Upload Parts上传块的请求，则Upload Parts会返回失败。当该UploadID不存在时，会返回404 NoSuchUpload。
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//
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// 建议您及时完成分块上传或者舍弃分块上传，因为已上传但是未终止的块会占用存储空间进而产生存储费用。
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//
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// https://www.qcloud.com/document/product/436/7740
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func (s *ObjectService) AbortMultipartUpload(ctx context.Context, name, uploadID string) (*Response, error) {
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u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
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sendOpt := sendOptions{
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baseURL: s.client.BaseURL.BucketURL,
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uri: u,
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method: http.MethodDelete,
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}
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resp, err := s.client.send(ctx, &sendOpt)
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return resp, err
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}
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