126 lines
2.7 KiB
Go
Executable File
126 lines
2.7 KiB
Go
Executable File
package jobs
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import (
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"context"
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"slices"
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"sync"
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"sync/atomic"
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"time"
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"ddc/internal/fetch"
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)
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type Status string
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const (
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StatusQueued Status = "queued"
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StatusDownloading Status = "downloading"
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StatusPaused Status = "paused"
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StatusExtracting Status = "extracting"
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StatusReady Status = "ready"
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StatusMoving Status = "moving"
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StatusCompleted Status = "completed"
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StatusFailed Status = "failed"
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StatusCancelled Status = "cancelled"
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)
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type Snapshot struct {
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ID string `json:"id"`
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SourceURL string `json:"sourceUrl"`
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FileName string `json:"fileName"`
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Status Status `json:"status"`
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Message string `json:"message"`
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BytesDone int64 `json:"bytesDone"`
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BytesTotal int64 `json:"bytesTotal"`
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CreatedAt time.Time `json:"createdAt"`
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MoveTarget string `json:"moveTarget,omitempty"`
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QueuePosition int `json:"queuePosition,omitempty"`
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}
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type Job struct {
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id string
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sourceURL string
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displayURL string
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directory string
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requestedName string
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autoExtract bool
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target *moveTarget
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createdAt time.Time
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jobContext context.Context
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cancel context.CancelFunc
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workers sync.WaitGroup
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mutex sync.Mutex
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status Status
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message string
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fileName string
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deleted bool
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downloaded bool
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downloadState *fetch.State
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cancelRun context.CancelCauseFunc
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recordMutex sync.Mutex
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bytesDone atomic.Int64
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bytesTotal atomic.Int64
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}
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func (job *Job) setStatus(status Status, message string) {
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job.mutex.Lock()
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defer job.mutex.Unlock()
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if job.deleted {
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return
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}
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job.status = status
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job.message = message
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}
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func (job *Job) currentStatus() Status {
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job.mutex.Lock()
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defer job.mutex.Unlock()
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return job.status
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}
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func (job *Job) begin(to Status, allowedFrom ...Status) bool {
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job.mutex.Lock()
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defer job.mutex.Unlock()
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if job.deleted || !slices.Contains(allowedFrom, job.status) {
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return false
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}
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job.status = to
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job.message = ""
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job.workers.Add(1)
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return true
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}
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func (job *Job) markDeleted() bool {
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job.mutex.Lock()
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defer job.mutex.Unlock()
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if job.status == StatusMoving {
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return false
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}
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job.deleted = true
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job.status = StatusCancelled
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return true
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}
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func (job *Job) snapshot() Snapshot {
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job.mutex.Lock()
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defer job.mutex.Unlock()
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moveTargetPath := ""
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if job.target != nil {
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moveTargetPath = job.target.displayPath()
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}
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return Snapshot{
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ID: job.id,
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SourceURL: job.displayURL,
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FileName: job.fileName,
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Status: job.status,
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Message: job.message,
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BytesDone: job.bytesDone.Load(),
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BytesTotal: job.bytesTotal.Load(),
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CreatedAt: job.createdAt,
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MoveTarget: moveTargetPath,
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}
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}
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