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package storage
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import (
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"bytes"
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"context"
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"encoding/json"
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"hash/crc32"
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"io"
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"os"
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"path/filepath"
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"sort"
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"strconv"
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"sync"
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"time"
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"github.com/qiniu/go-sdk/v7/client"
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)
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// ResumeUploader 表示一个分片上传的对象
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type ResumeUploader struct {
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Client *client.Client
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Cfg *Config
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}
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// NewResumeUploader 表示构建一个新的分片上传的对象
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func NewResumeUploader(cfg *Config) *ResumeUploader {
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return NewResumeUploaderEx(cfg, nil)
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}
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// NewResumeUploaderEx 表示构建一个新的分片上传的对象
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func NewResumeUploaderEx(cfg *Config, clt *client.Client) *ResumeUploader {
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if cfg == nil {
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cfg = &Config{}
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}
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if clt == nil {
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clt = &client.DefaultClient
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}
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return &ResumeUploader{
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Client: clt,
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Cfg: cfg,
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}
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}
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// Put 方法用来上传一个文件，支持断点续传和分块上传。
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//
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// ctx 是请求的上下文。
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// ret 是上传成功后返回的数据。如果 upToken 中没有设置 CallbackUrl 或 ReturnBody，那么返回的数据结构是 PutRet 结构。
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// upToken 是由业务服务器颁发的上传凭证。
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// key 是要上传的文件访问路径。比如："foo/bar.jpg"。注意我们建议 key 不要以 '/' 开头。另外，key 为空字符串是合法的。
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// f 是文件内容的访问接口。考虑到需要支持分块上传和断点续传，要的是 io.ReaderAt 接口，而不是 io.Reader。
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// fsize 是要上传的文件大小。
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// extra 是上传的一些可选项。详细见 RputExtra 结构的描述。
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//
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func (p *ResumeUploader) Put(ctx context.Context, ret interface{}, upToken string, key string, f io.ReaderAt, fsize int64, extra *RputExtra) error {
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return p.rput(ctx, ret, upToken, key, true, f, fsize, nil, extra)
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}
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func (p *ResumeUploader) PutWithoutSize(ctx context.Context, ret interface{}, upToken, key string, r io.Reader, extra *RputExtra) error {
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return p.rputWithoutSize(ctx, ret, upToken, key, true, r, extra)
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}
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// PutWithoutKey 方法用来上传一个文件，支持断点续传和分块上传。文件命名方式首先看看
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// upToken 中是否设置了 saveKey，如果设置了 saveKey，那么按 saveKey 要求的规则生成 key，否则自动以文件的 hash 做 key。
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//
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// ctx 是请求的上下文。
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// ret 是上传成功后返回的数据。如果 upToken 中没有设置 CallbackUrl 或 ReturnBody，那么返回的数据结构是 PutRet 结构。
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// upToken 是由业务服务器颁发的上传凭证。
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// f 是文件内容的访问接口。考虑到需要支持分块上传和断点续传，要的是 io.ReaderAt 接口，而不是 io.Reader。
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// fsize 是要上传的文件大小。
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// extra 是上传的一些可选项。详细见 RputExtra 结构的描述。
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//
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func (p *ResumeUploader) PutWithoutKey(ctx context.Context, ret interface{}, upToken string, f io.ReaderAt, fsize int64, extra *RputExtra) error {
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return p.rput(ctx, ret, upToken, "", false, f, fsize, nil, extra)
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}
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// PutWithoutKeyAndSize 方法用来上传一个文件，支持断点续传和分块上传。文件命名方式首先看看
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// upToken 中是否设置了 saveKey，如果设置了 saveKey，那么按 saveKey 要求的规则生成 key，否则自动以文件的 hash 做 key。
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//
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// ctx 是请求的上下文。
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// ret 是上传成功后返回的数据。如果 upToken 中没有设置 CallbackUrl 或 ReturnBody，那么返回的数据结构是 PutRet 结构。
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// upToken 是由业务服务器颁发的上传凭证。
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// f 是文件内容的访问接口。
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// extra 是上传的一些可选项。详细见 RputExtra 结构的描述。
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//
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func (p *ResumeUploader) PutWithoutKeyAndSize(ctx context.Context, ret interface{}, upToken string, f io.Reader, extra *RputExtra) error {
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return p.rputWithoutSize(ctx, ret, upToken, "", false, f, extra)
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}
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// PutFile 用来上传一个文件，支持断点续传和分块上传。
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// 和 Put 不同的只是一个通过提供文件路径来访问文件内容，一个通过 io.ReaderAt 来访问。
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//
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// ctx 是请求的上下文。
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// ret 是上传成功后返回的数据。如果 upToken 中没有设置 CallbackUrl 或 ReturnBody，那么返回的数据结构是 PutRet 结构。
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// upToken 是由业务服务器颁发的上传凭证。
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// key 是要上传的文件访问路径。比如："foo/bar.jpg"。注意我们建议 key 不要以 '/' 开头。另外，key 为空字符串是合法的。
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// localFile 是要上传的文件的本地路径。
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// extra 是上传的一些可选项。详细见 RputExtra 结构的描述。
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//
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func (p *ResumeUploader) PutFile(ctx context.Context, ret interface{}, upToken, key, localFile string, extra *RputExtra) error {
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return p.rputFile(ctx, ret, upToken, key, true, localFile, extra)
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}
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// PutFileWithoutKey 上传一个文件，支持断点续传和分块上传。文件命名方式首先看看
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// upToken 中是否设置了 saveKey，如果设置了 saveKey，那么按 saveKey 要求的规则生成 key，否则自动以文件的 hash 做 key。
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// 和 PutWithoutKey 不同的只是一个通过提供文件路径来访问文件内容，一个通过 io.ReaderAt 来访问。
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//
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// ctx 是请求的上下文。
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// ret 是上传成功后返回的数据。如果 upToken 中没有设置 CallbackUrl 或 ReturnBody，那么返回的数据结构是 PutRet 结构。
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// upToken 是由业务服务器颁发的上传凭证。
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// localFile 是要上传的文件的本地路径。
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// extra 是上传的一些可选项。详细见 RputExtra 结构的描述。
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//
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func (p *ResumeUploader) PutFileWithoutKey(ctx context.Context, ret interface{}, upToken, localFile string, extra *RputExtra) error {
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return p.rputFile(ctx, ret, upToken, "", false, localFile, extra)
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}
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type fileDetailsInfo struct {
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fileFullPath string
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fileInfo os.FileInfo
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}
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func (p *ResumeUploader) rput(ctx context.Context, ret interface{}, upToken string, key string, hasKey bool, f io.ReaderAt, fsize int64, fileDetails *fileDetailsInfo, extra *RputExtra) (err error) {
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if extra == nil {
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extra = &RputExtra{}
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}
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extra.init()
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var (
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upHost, accessKey, bucket, recorderKey string
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fileInfo os.FileInfo = nil
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)
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if accessKey, bucket, err = getAkBucketFromUploadToken(upToken); err != nil {
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return
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}
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if extra.UpHost != "" {
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upHost = extra.getUpHost(p.Cfg.UseHTTPS)
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} else {
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upHost, err = p.resumeUploaderAPIs().upHost(accessKey, bucket)
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if err != nil {
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return
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}
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}
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if extra.Recorder != nil && fileDetails != nil {
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recorderKey = extra.Recorder.GenerateRecorderKey(
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[]string{accessKey, bucket, key, "v1", fileDetails.fileFullPath, strconv.FormatInt(1<<blockBits, 10)},
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fileDetails.fileInfo)
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fileInfo = fileDetails.fileInfo
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}
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return uploadByWorkers(
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newResumeUploaderImpl(p, key, hasKey, upToken, upHost, fileInfo, extra, ret, recorderKey),
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ctx, newSizedChunkReader(f, fsize, 1<<blockBits), extra.TryTimes)
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}
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func (p *ResumeUploader) rputWithoutSize(ctx context.Context, ret interface{}, upToken string, key string, hasKey bool, r io.Reader, extra *RputExtra) (err error) {
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if extra == nil {
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extra = &RputExtra{}
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}
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extra.init()
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var upHost, accessKey, bucket string
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if accessKey, bucket, err = getAkBucketFromUploadToken(upToken); err != nil {
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return
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}
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if extra.UpHost != "" {
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upHost = extra.getUpHost(p.Cfg.UseHTTPS)
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} else {
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upHost, err = p.resumeUploaderAPIs().upHost(accessKey, bucket)
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if err != nil {
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return
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}
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}
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return uploadByWorkers(
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newResumeUploaderImpl(p, key, hasKey, upToken, upHost, nil, extra, ret, ""),
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ctx, newUnsizedChunkReader(r, 1<<blockBits), extra.TryTimes)
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}
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func (p *ResumeUploader) rputFile(ctx context.Context, ret interface{}, upToken string, key string, hasKey bool, localFile string, extra *RputExtra) (err error) {
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var (
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file *os.File
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fileInfo os.FileInfo
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fileDetails *fileDetailsInfo
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)
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if file, err = os.Open(localFile); err != nil {
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return
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}
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defer file.Close()
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if fileInfo, err = file.Stat(); err != nil {
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return
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}
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if fullPath, absErr := filepath.Abs(file.Name()); absErr == nil {
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fileDetails = &fileDetailsInfo{fileFullPath: fullPath, fileInfo: fileInfo}
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}
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return p.rput(ctx, ret, upToken, key, hasKey, file, fileInfo.Size(), fileDetails, extra)
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}
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// 创建块请求
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func (p *ResumeUploader) Mkblk(ctx context.Context, upToken string, upHost string, ret *BlkputRet, blockSize int, body io.Reader, size int) error {
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return p.resumeUploaderAPIs().mkBlk(ctx, upToken, upHost, ret, int64(blockSize), body, int64(size))
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}
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// 发送bput请求
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func (p *ResumeUploader) Bput(ctx context.Context, upToken string, ret *BlkputRet, body io.Reader, size int) error {
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return p.resumeUploaderAPIs().bput(ctx, upToken, ret, body, int64(size))
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}
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// 创建文件请求
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func (p *ResumeUploader) Mkfile(ctx context.Context, upToken string, upHost string, ret interface{}, key string, hasKey bool, fsize int64, extra *RputExtra) (err error) {
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return p.resumeUploaderAPIs().mkfile(ctx, upToken, upHost, ret, key, hasKey, fsize, extra)
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}
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func (p *ResumeUploader) UpHost(ak, bucket string) (upHost string, err error) {
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return p.resumeUploaderAPIs().upHost(ak, bucket)
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}
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func (p *ResumeUploader) resumeUploaderAPIs() *resumeUploaderAPIs {
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return &resumeUploaderAPIs{Client: p.Client, Cfg: p.Cfg}
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}
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type (
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// 用于实现 resumeUploaderBase 的 V1 分片接口
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resumeUploaderImpl struct {
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client *client.Client
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cfg *Config
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key string
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hasKey bool
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upToken string
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upHost string
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bufPool *sync.Pool
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extra *RputExtra
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ret interface{}
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fileSize int64
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fileInfo os.FileInfo
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recorderKey string
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lock sync.Mutex
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}
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resumeUploaderRecoveryInfoContext struct {
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Ctx string `json:"c"`
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Idx int `json:"i"`
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ChunkSize int `json:"s"`
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Offset int64 `json:"o"`
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ExpiredAt int64 `json:"e"`
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
resumeUploaderRecoveryInfo struct {
|
|
|
|
|
|
FileSize int64 `json:"s"`
|
|
|
|
|
|
ModTimeStamp int64 `json:"m"`
|
|
|
|
|
|
Contexts []resumeUploaderRecoveryInfoContext `json:"c"`
|
|
|
|
|
|
}
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
func newResumeUploaderImpl(resumeUploader *ResumeUploader, key string, hasKey bool, upToken string, upHost string, fileInfo os.FileInfo, extra *RputExtra, ret interface{}, recorderKey string) *resumeUploaderImpl {
|
|
|
|
|
|
return &resumeUploaderImpl{
|
|
|
|
|
|
client: resumeUploader.Client,
|
|
|
|
|
|
cfg: resumeUploader.Cfg,
|
|
|
|
|
|
key: key,
|
|
|
|
|
|
hasKey: hasKey,
|
|
|
|
|
|
upToken: upToken,
|
|
|
|
|
|
upHost: upHost,
|
|
|
|
|
|
bufPool: &sync.Pool{
|
|
|
|
|
|
New: func() interface{} {
|
|
|
|
|
|
return bytes.NewBuffer(make([]byte, 0, extra.ChunkSize))
|
|
|
|
|
|
},
|
|
|
|
|
|
},
|
|
|
|
|
|
extra: extra,
|
|
|
|
|
|
ret: ret,
|
|
|
|
|
|
fileSize: 0,
|
|
|
|
|
|
fileInfo: fileInfo,
|
|
|
|
|
|
recorderKey: recorderKey,
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) initUploader(ctx context.Context) ([]int64, error) {
|
|
|
|
|
|
var recovered []int64
|
|
|
|
|
|
if impl.extra.Recorder != nil {
|
|
|
|
|
|
if recorderData, err := impl.extra.Recorder.Get(impl.recorderKey); err == nil {
|
|
|
|
|
|
recovered = impl.recover(ctx, recorderData)
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
return recovered, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) uploadChunk(ctx context.Context, c chunk) error {
|
|
|
|
|
|
type ChunkRange struct {
|
|
|
|
|
|
From int64
|
|
|
|
|
|
Size int64
|
|
|
|
|
|
}
|
|
|
|
|
|
var (
|
|
|
|
|
|
chunkSize = int64(impl.extra.ChunkSize)
|
|
|
|
|
|
apis = impl.resumeUploaderAPIs()
|
|
|
|
|
|
chunkRange ChunkRange
|
|
|
|
|
|
blkPutRet BlkputRet
|
|
|
|
|
|
err error
|
|
|
|
|
|
realChunkSize int64
|
|
|
|
|
|
totalChunkSize = int64(0)
|
|
|
|
|
|
buffer = impl.bufPool.Get().(*bytes.Buffer)
|
|
|
|
|
|
)
|
|
|
|
|
|
defer impl.bufPool.Put(buffer)
|
|
|
|
|
|
|
|
|
|
|
|
for chunkOffset := int64(0); chunkOffset < c.size; chunkOffset += chunkRange.Size {
|
|
|
|
|
|
chunkRange = ChunkRange{From: chunkOffset, Size: c.size - chunkOffset}
|
|
|
|
|
|
if chunkRange.Size > chunkSize {
|
|
|
|
|
|
chunkRange.Size = chunkSize
|
|
|
|
|
|
}
|
|
|
|
|
|
hasher := crc32.NewIEEE()
|
|
|
|
|
|
buffer.Reset()
|
|
|
|
|
|
realChunkSize, err = io.Copy(hasher, io.TeeReader(io.NewSectionReader(c.reader, chunkRange.From, chunkRange.Size), buffer))
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
impl.extra.NotifyErr(int(c.id), int(c.size), err)
|
|
|
|
|
|
return err
|
|
|
|
|
|
} else if realChunkSize == 0 {
|
|
|
|
|
|
break
|
|
|
|
|
|
} else {
|
|
|
|
|
|
totalChunkSize += realChunkSize
|
|
|
|
|
|
}
|
|
|
|
|
|
crc32Value := hasher.Sum32()
|
|
|
|
|
|
UploadSingleChunk:
|
|
|
|
|
|
for retried := 0; retried < impl.extra.TryTimes; retried += 1 {
|
|
|
|
|
|
if chunkOffset == 0 {
|
|
|
|
|
|
err = apis.mkBlk(ctx, impl.upToken, impl.upHost, &blkPutRet, c.size, buffer, realChunkSize)
|
|
|
|
|
|
} else {
|
|
|
|
|
|
err = apis.bput(ctx, impl.upToken, &blkPutRet, buffer, realChunkSize)
|
|
|
|
|
|
}
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
if err == context.Canceled {
|
|
|
|
|
|
break UploadSingleChunk
|
|
|
|
|
|
}
|
|
|
|
|
|
continue UploadSingleChunk
|
|
|
|
|
|
}
|
|
|
|
|
|
if blkPutRet.Crc32 != crc32Value || int64(blkPutRet.Offset) != chunkOffset+realChunkSize {
|
|
|
|
|
|
err = ErrUnmatchedChecksum
|
|
|
|
|
|
continue UploadSingleChunk
|
|
|
|
|
|
}
|
|
|
|
|
|
break UploadSingleChunk
|
|
|
|
|
|
}
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
impl.extra.NotifyErr(int(c.id), int(realChunkSize), err)
|
|
|
|
|
|
return err
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
blkPutRet.blkIdx = int(c.id)
|
|
|
|
|
|
blkPutRet.fileOffset = c.offset
|
|
|
|
|
|
blkPutRet.chunkSize = int(totalChunkSize)
|
|
|
|
|
|
impl.extra.Notify(blkPutRet.blkIdx, int(totalChunkSize), &blkPutRet)
|
|
|
|
|
|
|
|
|
|
|
|
select {
|
|
|
|
|
|
case <-ctx.Done():
|
|
|
|
|
|
return ctx.Err()
|
|
|
|
|
|
default:
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func() {
|
|
|
|
|
|
impl.lock.Lock()
|
|
|
|
|
|
defer impl.lock.Unlock()
|
|
|
|
|
|
impl.extra.Progresses = append(impl.extra.Progresses, blkPutRet)
|
|
|
|
|
|
impl.fileSize += c.size
|
|
|
|
|
|
impl.save(ctx)
|
|
|
|
|
|
}()
|
|
|
|
|
|
|
|
|
|
|
|
return nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) final(ctx context.Context) error {
|
|
|
|
|
|
if impl.extra.Recorder != nil {
|
|
|
|
|
|
impl.extra.Recorder.Delete(impl.recorderKey)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
sort.Sort(blkputRets(impl.extra.Progresses))
|
|
|
|
|
|
return impl.resumeUploaderAPIs().mkfile(ctx, impl.upToken, impl.upHost, impl.ret, impl.key, impl.hasKey, impl.fileSize, impl.extra)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) recover(ctx context.Context, recoverData []byte) (recovered []int64) {
|
|
|
|
|
|
var recoveryInfo resumeUploaderRecoveryInfo
|
|
|
|
|
|
if err := json.Unmarshal(recoverData, &recoveryInfo); err != nil {
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
if impl.fileInfo == nil || recoveryInfo.FileSize != impl.fileInfo.Size() || recoveryInfo.ModTimeStamp != impl.fileInfo.ModTime().UnixNano() {
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
for _, c := range recoveryInfo.Contexts {
|
|
|
|
|
|
if time.Now().Before(time.Unix(c.ExpiredAt, 0)) {
|
|
|
|
|
|
impl.fileSize += int64(c.ChunkSize)
|
|
|
|
|
|
impl.extra.Progresses = append(impl.extra.Progresses, BlkputRet{
|
|
|
|
|
|
blkIdx: c.Idx, fileOffset: c.Offset, chunkSize: c.ChunkSize, Ctx: c.Ctx, ExpiredAt: c.ExpiredAt,
|
|
|
|
|
|
})
|
|
|
|
|
|
recovered = append(recovered, int64(c.Offset))
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) save(ctx context.Context) {
|
|
|
|
|
|
var (
|
|
|
|
|
|
recoveryInfo resumeUploaderRecoveryInfo
|
|
|
|
|
|
recoveredData []byte
|
|
|
|
|
|
err error
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
if impl.fileInfo == nil || impl.extra.Recorder == nil {
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
recoveryInfo.FileSize = impl.fileInfo.Size()
|
|
|
|
|
|
recoveryInfo.ModTimeStamp = impl.fileInfo.ModTime().UnixNano()
|
|
|
|
|
|
recoveryInfo.Contexts = make([]resumeUploaderRecoveryInfoContext, 0, len(impl.extra.Progresses))
|
|
|
|
|
|
|
|
|
|
|
|
for _, progress := range impl.extra.Progresses {
|
|
|
|
|
|
recoveryInfo.Contexts = append(recoveryInfo.Contexts, resumeUploaderRecoveryInfoContext{
|
|
|
|
|
|
Ctx: progress.Ctx, Idx: progress.blkIdx, Offset: progress.fileOffset, ChunkSize: progress.chunkSize, ExpiredAt: progress.ExpiredAt,
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if recoveredData, err = json.Marshal(recoveryInfo); err != nil {
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
err = impl.extra.Recorder.Set(impl.recorderKey, recoveredData)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (impl *resumeUploaderImpl) resumeUploaderAPIs() *resumeUploaderAPIs {
|
|
|
|
|
|
return &resumeUploaderAPIs{Client: impl.client, Cfg: impl.cfg}
|
|
|
|
|
|
}
|
