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cloudreve/pkg/filesystem/driver/onedrive/handler.go

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package onedrive
import (
"context"
"errors"
"fmt"
"net/url"
"path"
"path/filepath"
"strings"
"time"
model "github.com/cloudreve/Cloudreve/v3/models"
"github.com/cloudreve/Cloudreve/v3/pkg/auth"
"github.com/cloudreve/Cloudreve/v3/pkg/cache"
"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/driver"
"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response"
"github.com/cloudreve/Cloudreve/v3/pkg/request"
"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
)
// Driver OneDrive 适配器
type Driver struct {
Policy *model.Policy
Client *Client
HTTPClient request.Client
}
// NewDriver 从存储策略初始化新的Driver实例
func NewDriver(policy *model.Policy) (driver.Handler, error) {
client, err := NewClient(policy)
if policy.OptionsSerialized.ChunkSize == 0 {
policy.OptionsSerialized.ChunkSize = 50 << 20 // 50MB
}
return Driver{
Policy: policy,
Client: client,
HTTPClient: request.NewClient(),
}, err
}
// List 列取项目
func (handler Driver) List(ctx context.Context, base string, recursive bool) ([]response.Object, error) {
base = strings.TrimPrefix(base, "/")
// 列取子项目
objects, _ := handler.Client.ListChildren(ctx, base)
// 获取真实的列取起始根目录
rootPath := base
if realBase, ok := ctx.Value(fsctx.PathCtx).(string); ok {
rootPath = realBase
} else {
ctx = context.WithValue(ctx, fsctx.PathCtx, base)
}
// 整理结果
res := make([]response.Object, 0, len(objects))
for _, object := range objects {
source := path.Join(base, object.Name)
rel, err := filepath.Rel(rootPath, source)
if err != nil {
continue
}
res = append(res, response.Object{
Name: object.Name,
RelativePath: filepath.ToSlash(rel),
Source: source,
Size: object.Size,
IsDir: object.Folder != nil,
LastModify: time.Now(),
})
}
// 递归列取子目录
if recursive {
for _, object := range objects {
if object.Folder != nil {
sub, _ := handler.List(ctx, path.Join(base, object.Name), recursive)
res = append(res, sub...)
}
}
}
return res, nil
}
// Get 获取文件
func (handler Driver) Get(ctx context.Context, path string) (response.RSCloser, error) {
// 获取文件源地址
downloadURL, err := handler.Source(
ctx,
path,
url.URL{},
60,
false,
0,
)
if err != nil {
return nil, err
}
// 获取文件数据流
resp, err := handler.HTTPClient.Request(
"GET",
downloadURL,
nil,
request.WithContext(ctx),
request.WithTimeout(time.Duration(0)),
).CheckHTTPResponse(200).GetRSCloser()
if err != nil {
return nil, err
}
resp.SetFirstFakeChunk()
// 尝试自主获取文件大小
if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
resp.SetContentLength(int64(file.Size))
}
return resp, nil
}
// Put 将文件流保存到指定目录
func (handler Driver) Put(ctx context.Context, file fsctx.FileHeader) error {
defer file.Close()
return handler.Client.Upload(ctx, file)
}
// Delete 删除一个或多个文件,
// 返回未删除的文件,及遇到的最后一个错误
func (handler Driver) Delete(ctx context.Context, files []string) ([]string, error) {
return handler.Client.BatchDelete(ctx, files)
}
// Thumb 获取文件缩略图
func (handler Driver) Thumb(ctx context.Context, path string) (*response.ContentResponse, error) {
var (
thumbSize = [2]uint{400, 300}
ok = false
)
if thumbSize, ok = ctx.Value(fsctx.ThumbSizeCtx).([2]uint); !ok {
return nil, errors.New("无法获取缩略图尺寸设置")
}
res, err := handler.Client.GetThumbURL(ctx, path, thumbSize[0], thumbSize[1])
if err != nil {
// 如果出现异常就清空文件的pic_info
if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
file.UpdatePicInfo("")
}
}
return &response.ContentResponse{
Redirect: true,
URL: res,
}, err
}
// Source 获取外链URL
func (handler Driver) Source(
ctx context.Context,
path string,
baseURL url.URL,
ttl int64,
isDownload bool,
speed int,
) (string, error) {
cacheKey := fmt.Sprintf("onedrive_source_%d_%s", handler.Policy.ID, path)
if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
cacheKey = fmt.Sprintf("onedrive_source_file_%d_%d", file.UpdatedAt.Unix(), file.ID)
// 如果是永久链接,则返回签名后的中转外链
if ttl == 0 {
signedURI, err := auth.SignURI(
auth.General,
fmt.Sprintf("/api/v3/file/source/%d/%s", file.ID, file.Name),
ttl,
)
if err != nil {
return "", err
}
return baseURL.ResolveReference(signedURI).String(), nil
}
}
// 尝试从缓存中查找
if cachedURL, ok := cache.Get(cacheKey); ok {
return handler.replaceSourceHost(cachedURL.(string))
}
// 缓存不存在,重新获取
res, err := handler.Client.Meta(ctx, "", path)
if err == nil {
// 写入新的缓存
cache.Set(
cacheKey,
res.DownloadURL,
model.GetIntSetting("onedrive_source_timeout", 1800),
)
return handler.replaceSourceHost(res.DownloadURL)
}
return "", err
}
func (handler Driver) replaceSourceHost(origin string) (string, error) {
if handler.Policy.OptionsSerialized.OdProxy != "" {
source, err := url.Parse(origin)
if err != nil {
return "", err
}
cdn, err := url.Parse(handler.Policy.OptionsSerialized.OdProxy)
if err != nil {
return "", err
}
// 替换反代地址
source.Scheme = cdn.Scheme
source.Host = cdn.Host
return source.String(), nil
}
return origin, nil
}
// Token 获取上传会话URL
func (handler Driver) Token(ctx context.Context, ttl int64, uploadSession *serializer.UploadSession, file fsctx.FileHeader) (*serializer.UploadCredential, error) {
fileInfo := file.Info()
uploadURL, err := handler.Client.CreateUploadSession(ctx, fileInfo.SavePath, WithConflictBehavior("fail"))
if err != nil {
return nil, err
}
// 监控回调及上传
go handler.Client.MonitorUpload(uploadURL, uploadSession.Key, fileInfo.SavePath, fileInfo.Size, ttl)
uploadSession.UploadURL = uploadURL
return &serializer.UploadCredential{
SessionID: uploadSession.Key,
ChunkSize: handler.Policy.OptionsSerialized.ChunkSize,
UploadURLs: []string{uploadURL},
}, nil
}
// 取消上传凭证
func (handler Driver) CancelToken(ctx context.Context, uploadSession *serializer.UploadSession) error {
return handler.Client.DeleteUploadSession(ctx, uploadSession.UploadURL)
}