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package cos
import (
"context"
"encoding/xml"
"fmt"
"io"
"net/http"
)
// InitiateMultipartUploadOptions is the option of InitateMultipartUpload
type InitiateMultipartUploadOptions struct {
*ACLHeaderOptions
*ObjectPutHeaderOptions
}
// InitiateMultipartUploadResult is the result of InitateMultipartUpload
type InitiateMultipartUploadResult struct {
XMLName xml.Name `xml:"InitiateMultipartUploadResult"`
Bucket string
Key string
UploadID string `xml:"UploadId"`
}
// 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。
//
// https://www.qcloud.com/document/product/436/7746
func (s *ObjectService) InitiateMultipartUpload(ctx context.Context, name string, opt *InitiateMultipartUploadOptions) (*InitiateMultipartUploadResult, *Response, error) {
var res InitiateMultipartUploadResult
sendOpt := sendOptions{
baseURL: s.client.BaseURL.BucketURL,
uri: "/" + encodeURIComponent(name) + "?uploads",
method: http.MethodPost,
optHeader: opt,
result: &res,
}
resp, err := s.client.send(ctx, &sendOpt)
return &res, resp, err
}
// ObjectUploadPartOptions is the options of upload-part
type ObjectUploadPartOptions struct {
Expect string `header:"Expect,omitempty" url:"-"`
XCosContentSHA1 string `header:"x-cos-content-sha1" url:"-"`
ContentLength int `header:"Content-Length,omitempty" url:"-"`
}
// 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。
// 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。
//
// 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.
//
// 当 r 不是 bytes.Buffer/bytes.Reader/strings.Reader 时,必须指定 opt.ContentLength
//
// https://www.qcloud.com/document/product/436/7750
func (s *ObjectService) UploadPart(ctx context.Context, name, uploadID string, partNumber int, r io.Reader, opt *ObjectUploadPartOptions) (*Response, error) {
u := fmt.Sprintf("/%s?partNumber=%d&uploadId=%s", encodeURIComponent(name), partNumber, uploadID)
sendOpt := sendOptions{
baseURL: s.client.BaseURL.BucketURL,
uri: u,
method: http.MethodPut,
optHeader: opt,
body: r,
}
resp, err := s.client.send(ctx, &sendOpt)
return resp, err
}
// ObjectListPartsOptions is the option of ListParts
type ObjectListPartsOptions struct {
EncodingType string `url:"Encoding-type,omitempty"`
MaxParts int `url:"max-parts,omitempty"`
PartNumberMarker int `url:"part-number-marker,omitempty"`
}
// ObjectListPartsResult is the result of ListParts
type ObjectListPartsResult struct {
XMLName xml.Name `xml:"ListPartsResult"`
Bucket string
EncodingType string `xml:"Encoding-type,omitempty"`
Key string
UploadID string `xml:"UploadId"`
Initiator *Initiator `xml:"Initiator,omitempty"`
Owner *Owner `xml:"Owner,omitempty"`
StorageClass string
PartNumberMarker int
NextPartNumberMarker int `xml:"NextPartNumberMarker,omitempty"`
MaxParts int
IsTruncated bool
Parts []Object `xml:"Part,omitempty"`
}
// ListParts 用来查询特定分块上传中的已上传的块。
//
// https://www.qcloud.com/document/product/436/7747
func (s *ObjectService) ListParts(ctx context.Context, name, uploadID string) (*ObjectListPartsResult, *Response, error) {
u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
var res ObjectListPartsResult
sendOpt := sendOptions{
baseURL: s.client.BaseURL.BucketURL,
uri: u,
method: http.MethodGet,
result: &res,
}
resp, err := s.client.send(ctx, &sendOpt)
return &res, resp, err
}
// CompleteMultipartUploadOptions is the option of CompleteMultipartUpload
type CompleteMultipartUploadOptions struct {
XMLName xml.Name `xml:"CompleteMultipartUpload"`
Parts []Object `xml:"Part"`
}
// CompleteMultipartUploadResult is the result CompleteMultipartUpload
type CompleteMultipartUploadResult struct {
XMLName xml.Name `xml:"CompleteMultipartUploadResult"`
Location string
Bucket string
Key string
ETag string
}
// 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。
// 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。
//
// 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,
// 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。
//
// 当上传块小于1 MB的时候,在调用该请求时,会返回400 EntityTooSmall;
// 当上传块编号不连续的时候,在调用该请求时,会返回400 InvalidPart;
// 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;
// 当UploadId不存在的时候,在调用该请求时,会返回404 NoSuchUpload。
//
// 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。
//
// https://www.qcloud.com/document/product/436/7742
func (s *ObjectService) CompleteMultipartUpload(ctx context.Context, name, uploadID string, opt *CompleteMultipartUploadOptions) (*CompleteMultipartUploadResult, *Response, error) {
u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
var res CompleteMultipartUploadResult
sendOpt := sendOptions{
baseURL: s.client.BaseURL.BucketURL,
uri: u,
method: http.MethodPost,
body: opt,
result: &res,
}
resp, err := s.client.send(ctx, &sendOpt)
return &res, resp, err
}
// 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,
// 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。
//
// 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。
//
// https://www.qcloud.com/document/product/436/7740
func (s *ObjectService) AbortMultipartUpload(ctx context.Context, name, uploadID string) (*Response, error) {
u := fmt.Sprintf("/%s?uploadId=%s", encodeURIComponent(name), uploadID)
sendOpt := sendOptions{
baseURL: s.client.BaseURL.BucketURL,
uri: u,
method: http.MethodDelete,
}
resp, err := s.client.send(ctx, &sendOpt)
return resp, err
}