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cloudreve/pkg/task/tranfer.go

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package task
import (
"context"
"encoding/json"
"os"
"path"
"path/filepath"
"strings"
model "github.com/cloudreve/Cloudreve/v3/models"
"github.com/cloudreve/Cloudreve/v3/pkg/cluster"
"github.com/cloudreve/Cloudreve/v3/pkg/filesystem"
"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
"github.com/cloudreve/Cloudreve/v3/pkg/util"
)
// TransferTask 文件中转任务
type TransferTask struct {
User *model.User
TaskModel *model.Task
TaskProps TransferProps
Err *JobError
zipPath string
}
// TransferProps 中转任务属性
type TransferProps struct {
Src []string `json:"src"` // 原始文件
SrcSizes map[string]uint64 `json:"src_size"` // 原始文件的大小信息,从机转存时使用
Parent string `json:"parent"` // 父目录
Dst string `json:"dst"` // 目的目录ID
// 将会保留原始文件的目录结构Src 除去 Parent 开头作为最终路径
TrimPath bool `json:"trim_path"`
// 负责处理中专任务的节点ID
NodeID uint `json:"node_id"`
}
// Props 获取任务属性
func (job *TransferTask) Props() string {
res, _ := json.Marshal(job.TaskProps)
return string(res)
}
// Type 获取任务状态
func (job *TransferTask) Type() int {
return TransferTaskType
}
// Creator 获取创建者ID
func (job *TransferTask) Creator() uint {
return job.User.ID
}
// Model 获取任务的数据库模型
func (job *TransferTask) Model() *model.Task {
return job.TaskModel
}
// SetStatus 设定状态
func (job *TransferTask) SetStatus(status int) {
job.TaskModel.SetStatus(status)
}
// SetError 设定任务失败信息
func (job *TransferTask) SetError(err *JobError) {
job.Err = err
res, _ := json.Marshal(job.Err)
job.TaskModel.SetError(string(res))
}
// SetErrorMsg 设定任务失败信息
func (job *TransferTask) SetErrorMsg(msg string, err error) {
jobErr := &JobError{Msg: msg}
if err != nil {
jobErr.Error = err.Error()
}
job.SetError(jobErr)
}
// GetError 返回任务失败信息
func (job *TransferTask) GetError() *JobError {
return job.Err
}
// Do 开始执行任务
func (job *TransferTask) Do() {
defer job.Recycle()
// 创建文件系统
fs, err := filesystem.NewFileSystem(job.User)
if err != nil {
job.SetErrorMsg(err.Error(), nil)
return
}
for index, file := range job.TaskProps.Src {
job.TaskModel.SetProgress(index)
dst := path.Join(job.TaskProps.Dst, filepath.Base(file))
if job.TaskProps.TrimPath {
// 保留原始目录
trim := util.FormSlash(job.TaskProps.Parent)
src := util.FormSlash(file)
dst = path.Join(job.TaskProps.Dst, strings.TrimPrefix(src, trim))
}
ctx := context.WithValue(context.Background(), fsctx.DisableOverwrite, true)
ctx = context.WithValue(ctx, fsctx.SlaveSrcPath, file)
if job.TaskProps.NodeID > 1 {
// 指定为从机中转
// 获取从机节点
node := cluster.Default.GetNodeByID(job.TaskProps.NodeID)
if node == nil {
job.SetErrorMsg("从机节点不可用", nil)
}
// 切换为从机节点处理上传
fs.SwitchToSlaveHandler(node)
err = fs.UploadFromStream(ctx, nil, dst, job.TaskProps.SrcSizes[file])
} else {
// 主机节点中转
err = fs.UploadFromPath(ctx, file, dst, true)
}
if err != nil {
job.SetErrorMsg("文件转存失败", err)
}
}
}
// Recycle 回收临时文件
func (job *TransferTask) Recycle() {
if job.TaskProps.NodeID == 1 {
err := os.RemoveAll(job.TaskProps.Parent)
if err != nil {
util.Log().Warning("无法删除中转临时目录[%s], %s", job.TaskProps.Parent, err)
}
}
}
// NewTransferTask 新建中转任务
func NewTransferTask(user uint, src []string, dst, parent string, trim bool, node uint, sizes map[string]uint64) (Job, error) {
creator, err := model.GetActiveUserByID(user)
if err != nil {
return nil, err
}
newTask := &TransferTask{
User: &creator,
TaskProps: TransferProps{
Src: src,
Parent: parent,
Dst: dst,
TrimPath: trim,
NodeID: node,
SrcSizes: sizes,
},
}
record, err := Record(newTask)
if err != nil {
return nil, err
}
newTask.TaskModel = record
return newTask, nil
}
// NewTransferTaskFromModel 从数据库记录中恢复中转任务
func NewTransferTaskFromModel(task *model.Task) (Job, error) {
user, err := model.GetActiveUserByID(task.UserID)
if err != nil {
return nil, err
}
newTask := &TransferTask{
User: &user,
TaskModel: task,
}
err = json.Unmarshal([]byte(task.Props), &newTask.TaskProps)
if err != nil {
return nil, err
}
return newTask, nil
}