Include endpoints for getting active downloads for a server
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f8282c56cb
commit
184013b652
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@ -3,6 +3,7 @@ package downloader
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import (
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"context"
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"emperror.dev/errors"
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"encoding/json"
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"github.com/google/uuid"
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"github.com/pterodactyl/wings/server"
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"io"
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@ -28,7 +29,7 @@ func (c *Counter) Write(p []byte) (int, error) {
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type Downloader struct {
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mu sync.RWMutex
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downloadCache map[string]Download
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downloadCache map[string]*Download
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serverCache map[string][]string
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}
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@ -39,6 +40,7 @@ type DownloadRequest struct {
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type Download struct {
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Identifier string
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mu sync.RWMutex
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req DownloadRequest
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server *server.Server
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progress float64
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@ -48,7 +50,7 @@ type Download struct {
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var client = &http.Client{Timeout: time.Hour * 12}
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var instance = &Downloader{
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// Tracks all of the active downloads.
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downloadCache: make(map[string]Download),
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downloadCache: make(map[string]*Download),
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// Tracks all of the downloads active for a given server instance. This is
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// primarily used to make things quicker and keep the code a little more
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// legible throughout here.
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@ -63,13 +65,15 @@ func New(s *server.Server, r DownloadRequest) *Download {
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req: r,
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server: s,
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}
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instance.track(dl)
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instance.track(&dl)
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return &dl
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}
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// Returns all of the tracked downloads for a given server instance.
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func ByServer(sid string) []Download {
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var downloads []Download
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func ByServer(sid string) []*Download {
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instance.mu.Lock()
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defer instance.mu.Unlock()
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var downloads []*Download
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if v, ok := instance.serverCache[sid]; ok {
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for _, id := range v {
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if dl, dlok := instance.downloadCache[id]; dlok {
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@ -82,11 +86,19 @@ func ByServer(sid string) []Download {
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// Returns a single Download matching a given identifier. If no download is found
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// the second argument in the response will be false.
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func ByID(dlid string) (Download, bool) {
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if v, ok := instance.downloadCache[dlid]; ok {
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return v, true
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}
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return Download{}, false
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func ByID(dlid string) *Download {
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return instance.find(dlid)
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}
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//goland:noinspection GoVetCopyLock
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func (dl Download) MarshalJSON() ([]byte, error) {
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return json.Marshal(struct {
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Identifier string
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Progress float64
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}{
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Identifier: dl.Identifier,
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Progress: dl.Progress(),
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})
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}
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// Executes a given download for the server and begins writing the file to the disk. Once
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@ -140,20 +152,29 @@ func (dl *Download) BelongsTo(s *server.Server) bool {
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return dl.server.Id() == s.Id()
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}
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// Returns the current progress of the download as a float value between 0 and 1 where
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// 1 indicates that the download is completed.
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func (dl *Download) Progress() float64 {
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dl.mu.RLock()
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defer dl.mu.RUnlock()
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return dl.progress
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}
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// Handles a write event by updating the progress completed percentage and firing off
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// events to the server websocket as needed.
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func (dl *Download) counter(contentLength int64) *Counter {
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onWrite := func(t int) {
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dl.mu.Lock()
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defer dl.mu.Unlock()
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dl.progress = float64(t) / float64(contentLength)
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}
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return &Counter{
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onWrite: onWrite,
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}
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}
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// Tracks a download in the internal cache for this instance.
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func (d *Downloader) track(dl Download) {
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func (d *Downloader) track(dl *Download) {
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d.mu.Lock()
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defer d.mu.Unlock()
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sid := dl.server.Id()
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@ -167,13 +188,13 @@ func (d *Downloader) track(dl Download) {
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}
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// Finds a given download entry using the provided ID and returns it.
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func (d *Downloader) find(dlid string) (Download, bool) {
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func (d *Downloader) find(dlid string) *Download {
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d.mu.RLock()
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defer d.mu.RUnlock()
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if entry, ok := d.downloadCache[dlid]; ok {
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return entry, true
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return entry
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}
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return Download{}, false
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return nil
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}
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// Remove the given download reference from the cache storing them. This also updates
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@ -82,13 +82,15 @@ func Configure() *gin.Engine {
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files.PUT("/rename", putServerRenameFiles)
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files.POST("/copy", postServerCopyFile)
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files.POST("/write", postServerWriteFile)
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files.POST("/pull", postServerPullRemoteFile)
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files.DELETE("/pull/:download", deleteServerPullRemoteFile)
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files.POST("/create-directory", postServerCreateDirectory)
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files.POST("/delete", postServerDeleteFiles)
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files.POST("/compress", postServerCompressFiles)
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files.POST("/decompress", postServerDecompressFiles)
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files.POST("/chmod", postServerChmodFile)
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files.GET("/pull", getServerPullingFiles)
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files.POST("/pull", postServerPullRemoteFile)
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files.DELETE("/pull/:download", deleteServerPullRemoteFile)
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}
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backup := server.Group("/backup")
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@ -233,6 +233,17 @@ func postServerWriteFile(c *gin.Context) {
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c.Status(http.StatusNoContent)
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}
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// Returns all of the currently in-progress file downloads and their current download
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// progress. The progress is also pushed out via a websocket event allowing you to just
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// call this once to get current downloads, and then listen to targeted websocket events
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// with the current progress for everything.
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func getServerPullingFiles(c *gin.Context) {
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s := ExtractServer(c)
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c.JSON(http.StatusOK, gin.H{
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"downloads": downloader.ByServer(s.Id()),
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})
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}
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// Writes the contents of the remote URL to a file on a server.
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func postServerPullRemoteFile(c *gin.Context) {
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s := ExtractServer(c)
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@ -284,7 +295,7 @@ func postServerPullRemoteFile(c *gin.Context) {
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// Stops a remote file download if it exists and belongs to this server.
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func deleteServerPullRemoteFile(c *gin.Context) {
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s := ExtractServer(c)
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if dl, ok := downloader.ByID(c.Param("download")); ok && dl.BelongsTo(s) {
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if dl := downloader.ByID(c.Param("download")); dl != nil && dl.BelongsTo(s) {
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dl.Cancel()
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}
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c.Status(http.StatusNoContent)
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