Pull common queue code into a TransferQueue, reduce duplicated code
This commit is contained in:
parent
f8f4ad230a
commit
a3bb997567
@ -36,7 +36,7 @@ func getCommand(cmd *cobra.Command, args []string) {
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q := lfs.NewDownloadQueue(lfs.Config.ConcurrentTransfers(), len(pointers))
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for _, p := range pointers {
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q.Add(p)
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q.Add(lfs.NewDownloadable(p))
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}
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q.Process()
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@ -1,197 +1,45 @@
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package lfs
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import (
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"fmt"
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"github.com/cheggaaa/pb"
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"sync"
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"sync/atomic"
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)
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type Downloadable struct {
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Pointer *wrappedPointer
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Object *objectResource
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object *objectResource
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}
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// DownloadQueue provides a queue that will allow concurrent uploads.
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type DownloadQueue struct {
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downloadc chan *Downloadable
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errorc chan *WrappedError
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errors []*WrappedError
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wg sync.WaitGroup
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workers int
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files int
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finished int64
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size int64
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authCond *sync.Cond
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downloadables map[string]*Downloadable
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bar *pb.ProgressBar
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clientAuthorized int32
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func NewDownloadable(p *wrappedPointer) *Downloadable {
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return &Downloadable{Pointer: p}
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}
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func (d *Downloadable) Check() (*objectResource, *WrappedError) {
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return DownloadCheck(d.Pointer.Oid)
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}
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func (d *Downloadable) Transfer(cb CopyCallback) *WrappedError {
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err := PointerSmudgeObject(d.Pointer.Pointer, d.object, cb)
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if err != nil {
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return Error(err)
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}
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return nil
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}
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func (d *Downloadable) Object() *objectResource {
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return d.object
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}
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func (d *Downloadable) Oid() string {
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return d.Pointer.Oid
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}
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func (d *Downloadable) Size() int64 {
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return d.Pointer.Size
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}
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func (d *Downloadable) SetObject(o *objectResource) {
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d.object = o
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}
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// NewDownloadQueue builds a DownloadQueue, allowing `workers` concurrent downloads.
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func NewDownloadQueue(workers, files int) *DownloadQueue {
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return &DownloadQueue{
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downloadc: make(chan *Downloadable, files),
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errorc: make(chan *WrappedError),
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workers: workers,
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files: files,
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authCond: sync.NewCond(&sync.Mutex{}),
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downloadables: make(map[string]*Downloadable),
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}
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}
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// Add adds an object to the download queue.
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func (q *DownloadQueue) Add(p *wrappedPointer) {
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q.downloadables[p.Oid] = &Downloadable{Pointer: p}
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}
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func (q *DownloadQueue) processBatch() {
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q.files = 0
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downloads := make([]*objectResource, 0, len(q.downloadables))
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for _, d := range q.downloadables {
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downloads = append(downloads, &objectResource{Oid: d.Pointer.Oid, Size: d.Pointer.Size})
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}
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objects, err := Batch(downloads)
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if err != nil {
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q.errorc <- err
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sendApiEvent(apiEventFail)
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return
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}
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for _, o := range objects {
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if _, ok := o.Links["download"]; ok {
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// This object can be downloaded
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if downloadable, ok := q.downloadables[o.Oid]; ok {
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q.files++
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q.wg.Add(1)
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downloadable.Object = o
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q.downloadc <- downloadable
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}
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}
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}
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close(q.downloadc)
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, q.files))
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q.bar.Start()
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sendApiEvent(apiEventSuccess) // Wake up upload workers
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}
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// apiWorker processes the queue, making the POST calls and
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// feeding the results to uploadWorkers
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func (q *DownloadQueue) processIndividual() {
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apic := make(chan *Downloadable, q.files)
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workersReady := make(chan int, q.workers)
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var wg sync.WaitGroup
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for i := 0; i < q.workers; i++ {
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go func() {
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workersReady <- 1
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for d := range apic {
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// If an API authorization has not occured, we wait until we're woken up.
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q.authCond.L.Lock()
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if atomic.LoadInt32(&q.clientAuthorized) == 0 {
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q.authCond.Wait()
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}
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q.authCond.L.Unlock()
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obj, err := DownloadCheck(d.Pointer.Oid)
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if err != nil {
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q.errorc <- err
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wg.Done()
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continue
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}
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q.wg.Add(1)
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d.Object = obj
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q.downloadc <- d
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wg.Done()
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}
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}()
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}
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, len(q.downloadables)))
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q.bar.Start()
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for _, d := range q.downloadables {
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wg.Add(1)
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apic <- d
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}
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<-workersReady
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q.authCond.Signal() // Signal the first goroutine to run
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close(apic)
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wg.Wait()
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close(q.downloadc)
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}
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// Process starts the download queue and displays a progress bar.
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func (q *DownloadQueue) Process() {
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q.bar = pb.New64(q.size)
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q.bar.SetUnits(pb.U_BYTES)
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q.bar.ShowBar = false
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// This goroutine collects errors returned from downloads
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go func() {
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for err := range q.errorc {
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q.errors = append(q.errors, err)
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}
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}()
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// This goroutine watches for apiEvents. In order to prevent multiple
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// credential requests from happening, the queue is processed sequentially
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// until an API request succeeds (meaning authenication has happened successfully).
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// Once the an API request succeeds, all worker goroutines are woken up and allowed
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// to process downloads. Once a success happens, this goroutine exits.
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go func() {
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for {
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event := <-apiEvent
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switch event {
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case apiEventSuccess:
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atomic.StoreInt32(&q.clientAuthorized, 1)
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q.authCond.Broadcast() // Wake all remaining goroutines
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return
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case apiEventFail:
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q.authCond.Signal() // Wake the next goroutine
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}
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}
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}()
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for i := 0; i < q.workers; i++ {
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// These are the worker goroutines that process uploads
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go func(n int) {
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for d := range q.downloadc {
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cb := func(total, read int64, current int) error {
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q.bar.Add(current)
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return nil
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}
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if err := PointerSmudgeObject(d.Pointer.Pointer, d.Object, cb); err != nil {
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q.errorc <- Error(err)
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}
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f := atomic.AddInt64(&q.finished, 1)
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", f, q.files))
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q.wg.Done()
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}
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}(i)
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}
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if Config.BatchTransfer() {
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q.processBatch()
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} else {
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q.processIndividual()
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}
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q.wg.Wait()
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close(q.errorc)
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q.bar.Finish()
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}
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// Errors returns any errors encountered during uploading.
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func (q *DownloadQueue) Errors() []*WrappedError {
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return q.errors
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func NewDownloadQueue(workers, files int) *TransferQueue {
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q := newTransferQueue(workers, files)
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q.transferKind = "download"
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return q
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}
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205
lfs/transfer_queue.go
Normal file
205
lfs/transfer_queue.go
Normal file
@ -0,0 +1,205 @@
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package lfs
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import (
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"fmt"
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"github.com/cheggaaa/pb"
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"sync"
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"sync/atomic"
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)
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type Transferable interface {
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Check() (*objectResource, *WrappedError)
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Transfer(CopyCallback) *WrappedError
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Object() *objectResource
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Oid() string
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Size() int64
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SetObject(*objectResource)
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}
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// TransferQueue provides a queue that will allow concurrent transfers.
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type TransferQueue struct {
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transferc chan Transferable
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errorc chan *WrappedError
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errors []*WrappedError
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wg sync.WaitGroup
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workers int
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files int
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finished int64
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size int64
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authCond *sync.Cond
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transferables map[string]Transferable
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bar *pb.ProgressBar
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clientAuthorized int32
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transferKind string
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}
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// newTransferQueue builds a TransferQueue, allowing `workers` concurrent transfers.
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func newTransferQueue(workers, files int) *TransferQueue {
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return &TransferQueue{
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transferc: make(chan Transferable, files),
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errorc: make(chan *WrappedError),
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workers: workers,
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files: files,
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authCond: sync.NewCond(&sync.Mutex{}),
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transferables: make(map[string]Transferable),
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}
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}
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// Add adds an Uploadable to the upload queue.
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func (q *TransferQueue) Add(t Transferable) {
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q.transferables[t.Oid()] = t
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}
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// apiWorker processes the queue, making the POST calls and
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// feeding the results to uploadWorkers
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func (q *TransferQueue) processIndividual() {
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apic := make(chan Transferable, q.files)
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workersReady := make(chan int, q.workers)
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var wg sync.WaitGroup
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for i := 0; i < q.workers; i++ {
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go func() {
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workersReady <- 1
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for t := range apic {
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// If an API authorization has not occured, we wait until we're woken up.
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q.authCond.L.Lock()
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if atomic.LoadInt32(&q.clientAuthorized) == 0 {
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q.authCond.Wait()
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}
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q.authCond.L.Unlock()
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obj, err := t.Check()
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if err != nil {
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q.errorc <- err
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wg.Done()
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continue
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}
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if obj != nil {
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q.wg.Add(1)
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t.SetObject(obj)
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q.transferc <- t
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}
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wg.Done()
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}
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}()
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}
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, len(q.transferables)))
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q.bar.Start()
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for _, t := range q.transferables {
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wg.Add(1)
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apic <- t
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}
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<-workersReady
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q.authCond.Signal() // Signal the first goroutine to run
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close(apic)
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wg.Wait()
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close(q.transferc)
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}
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// batchWorker makes the batch POST call, feeding the results
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// to the transfer workers
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func (q *TransferQueue) processBatch() {
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q.files = 0
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transfers := make([]*objectResource, 0, len(q.transferables))
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for _, t := range q.transferables {
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transfers = append(transfers, &objectResource{Oid: t.Oid(), Size: t.Size()})
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}
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objects, err := Batch(transfers)
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if err != nil {
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q.errorc <- err
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sendApiEvent(apiEventFail)
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return
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}
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for _, o := range objects {
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if _, ok := o.Links[q.transferKind]; ok {
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// This object needs to be transfered
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if transfer, ok := q.transferables[o.Oid]; ok {
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q.files++
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q.wg.Add(1)
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transfer.SetObject(o)
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q.transferc <- transfer
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}
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}
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}
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close(q.transferc)
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, q.files))
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q.bar.Start()
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sendApiEvent(apiEventSuccess) // Wake up upload workers
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}
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// Process starts the upload queue and displays a progress bar.
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func (q *TransferQueue) Process() {
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q.bar = pb.New64(q.size)
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q.bar.SetUnits(pb.U_BYTES)
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q.bar.ShowBar = false
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// This goroutine collects errors returned from uploads
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go func() {
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for err := range q.errorc {
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q.errors = append(q.errors, err)
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}
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}()
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// This goroutine watches for apiEvents. In order to prevent multiple
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// credential requests from happening, the queue is processed sequentially
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// until an API request succeeds (meaning authenication has happened successfully).
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// Once the an API request succeeds, all worker goroutines are woken up and allowed
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// to process uploads. Once a success happens, this goroutine exits.
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go func() {
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for {
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event := <-apiEvent
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switch event {
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case apiEventSuccess:
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atomic.StoreInt32(&q.clientAuthorized, 1)
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q.authCond.Broadcast() // Wake all remaining goroutines
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return
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case apiEventFail:
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q.authCond.Signal() // Wake the next goroutine
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}
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}
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}()
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for i := 0; i < q.workers; i++ {
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// These are the worker goroutines that process uploads
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go func(n int) {
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for transfer := range q.transferc {
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cb := func(total, read int64, current int) error {
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q.bar.Add(current)
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return nil
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}
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if err := transfer.Transfer(cb); err != nil {
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q.errorc <- err
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}
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f := atomic.AddInt64(&q.finished, 1)
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q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", f, q.files))
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q.wg.Done()
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}
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}(i)
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}
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if Config.BatchTransfer() {
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q.processBatch()
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} else {
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q.processIndividual()
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}
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q.wg.Wait()
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close(q.errorc)
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q.bar.Finish()
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}
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// Errors returns any errors encountered during uploading.
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func (q *TransferQueue) Errors() []*WrappedError {
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return q.errors
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}
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@ -2,20 +2,17 @@ package lfs
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import (
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"fmt"
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"github.com/cheggaaa/pb"
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"os"
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"path/filepath"
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"sync"
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"sync/atomic"
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)
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// Uploadable describes a file that can be uploaded.
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type Uploadable struct {
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OID string
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OIDPath string
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oid string
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OidPath string
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Filename string
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CB CopyCallback
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Size int64
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size int64
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object *objectResource
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}
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@ -44,198 +41,46 @@ func NewUploadable(oid, filename string, index, totalFiles int) (*Uploadable, *W
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defer file.Close()
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}
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return &Uploadable{OID: oid, OIDPath: path, Filename: filename, CB: cb, Size: fi.Size()}, nil
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return &Uploadable{oid: oid, OidPath: path, Filename: filename, CB: cb, size: fi.Size()}, nil
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}
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// UploadQueue provides a queue that will allow concurrent uploads.
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type UploadQueue struct {
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uploadc chan *Uploadable
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errorc chan *WrappedError
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errors []*WrappedError
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wg sync.WaitGroup
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workers int
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files int
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finished int64
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size int64
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authCond *sync.Cond
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uploadables map[string]*Uploadable
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bar *pb.ProgressBar
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clientAuthorized int32
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func (u *Uploadable) Check() (*objectResource, *WrappedError) {
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return UploadCheck(u.OidPath)
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}
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func (u *Uploadable) Transfer(cb CopyCallback) *WrappedError {
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wcb := func(total, read int64, current int) error {
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cb(total, read, current)
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if u.CB != nil {
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return u.CB(total, read, current)
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}
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return nil
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}
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return UploadObject(u.object, wcb)
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}
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func (u *Uploadable) Object() *objectResource {
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return u.object
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}
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func (u *Uploadable) Oid() string {
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return u.oid
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}
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func (u *Uploadable) Size() int64 {
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return u.size
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}
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func (u *Uploadable) SetObject(o *objectResource) {
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u.object = o
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}
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// NewUploadQueue builds an UploadQueue, allowing `workers` concurrent uploads.
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func NewUploadQueue(workers, files int) *UploadQueue {
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return &UploadQueue{
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uploadc: make(chan *Uploadable, files),
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errorc: make(chan *WrappedError),
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workers: workers,
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files: files,
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authCond: sync.NewCond(&sync.Mutex{}),
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uploadables: make(map[string]*Uploadable),
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}
|
||||
}
|
||||
|
||||
// Add adds an Uploadable to the upload queue.
|
||||
func (q *UploadQueue) Add(u *Uploadable) {
|
||||
q.uploadables[u.OID] = u
|
||||
}
|
||||
|
||||
// apiWorker processes the queue, making the POST calls and
|
||||
// feeding the results to uploadWorkers
|
||||
func (q *UploadQueue) processIndividual() {
|
||||
apic := make(chan *Uploadable, q.files)
|
||||
workersReady := make(chan int, q.workers)
|
||||
var wg sync.WaitGroup
|
||||
|
||||
for i := 0; i < q.workers; i++ {
|
||||
go func() {
|
||||
workersReady <- 1
|
||||
for u := range apic {
|
||||
// If an API authorization has not occured, we wait until we're woken up.
|
||||
q.authCond.L.Lock()
|
||||
if atomic.LoadInt32(&q.clientAuthorized) == 0 {
|
||||
q.authCond.Wait()
|
||||
}
|
||||
q.authCond.L.Unlock()
|
||||
|
||||
obj, err := UploadCheck(u.OIDPath)
|
||||
if err != nil {
|
||||
q.errorc <- err
|
||||
wg.Done()
|
||||
continue
|
||||
}
|
||||
if obj != nil {
|
||||
q.wg.Add(1)
|
||||
u.object = obj
|
||||
q.uploadc <- u
|
||||
}
|
||||
wg.Done()
|
||||
}
|
||||
}()
|
||||
}
|
||||
|
||||
q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, len(q.uploadables)))
|
||||
q.bar.Start()
|
||||
|
||||
for _, u := range q.uploadables {
|
||||
wg.Add(1)
|
||||
apic <- u
|
||||
}
|
||||
|
||||
<-workersReady
|
||||
q.authCond.Signal() // Signal the first goroutine to run
|
||||
close(apic)
|
||||
wg.Wait()
|
||||
|
||||
close(q.uploadc)
|
||||
}
|
||||
|
||||
// batchWorker makes the batch POST call, feeding the results
|
||||
// to the uploadWorkers
|
||||
func (q *UploadQueue) processBatch() {
|
||||
q.files = 0
|
||||
uploads := make([]*objectResource, 0, len(q.uploadables))
|
||||
for _, u := range q.uploadables {
|
||||
uploads = append(uploads, &objectResource{Oid: u.OID, Size: u.Size})
|
||||
}
|
||||
|
||||
objects, err := Batch(uploads)
|
||||
if err != nil {
|
||||
q.errorc <- err
|
||||
sendApiEvent(apiEventFail)
|
||||
return
|
||||
}
|
||||
|
||||
for _, o := range objects {
|
||||
if _, ok := o.Links["upload"]; ok {
|
||||
// This object needs to be uploaded
|
||||
if uploadable, ok := q.uploadables[o.Oid]; ok {
|
||||
q.files++
|
||||
q.wg.Add(1)
|
||||
uploadable.object = o
|
||||
q.uploadc <- uploadable
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
close(q.uploadc)
|
||||
q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", q.finished, q.files))
|
||||
q.bar.Start()
|
||||
sendApiEvent(apiEventSuccess) // Wake up upload workers
|
||||
}
|
||||
|
||||
// Process starts the upload queue and displays a progress bar.
|
||||
func (q *UploadQueue) Process() {
|
||||
q.bar = pb.New64(q.size)
|
||||
q.bar.SetUnits(pb.U_BYTES)
|
||||
q.bar.ShowBar = false
|
||||
|
||||
// This goroutine collects errors returned from uploads
|
||||
go func() {
|
||||
for err := range q.errorc {
|
||||
q.errors = append(q.errors, err)
|
||||
}
|
||||
}()
|
||||
|
||||
// This goroutine watches for apiEvents. In order to prevent multiple
|
||||
// credential requests from happening, the queue is processed sequentially
|
||||
// until an API request succeeds (meaning authenication has happened successfully).
|
||||
// Once the an API request succeeds, all worker goroutines are woken up and allowed
|
||||
// to process uploads. Once a success happens, this goroutine exits.
|
||||
go func() {
|
||||
for {
|
||||
event := <-apiEvent
|
||||
switch event {
|
||||
case apiEventSuccess:
|
||||
atomic.StoreInt32(&q.clientAuthorized, 1)
|
||||
q.authCond.Broadcast() // Wake all remaining goroutines
|
||||
return
|
||||
case apiEventFail:
|
||||
q.authCond.Signal() // Wake the next goroutine
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
for i := 0; i < q.workers; i++ {
|
||||
// These are the worker goroutines that process uploads
|
||||
go func(n int) {
|
||||
|
||||
for upload := range q.uploadc {
|
||||
cb := func(total, read int64, current int) error {
|
||||
q.bar.Add(current)
|
||||
if upload.CB != nil {
|
||||
return upload.CB(total, read, current)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
err := UploadObject(upload.object, cb)
|
||||
if err != nil {
|
||||
q.errorc <- err
|
||||
}
|
||||
|
||||
f := atomic.AddInt64(&q.finished, 1)
|
||||
q.bar.Prefix(fmt.Sprintf("(%d of %d files) ", f, q.files))
|
||||
q.wg.Done()
|
||||
}
|
||||
}(i)
|
||||
}
|
||||
|
||||
if Config.BatchTransfer() {
|
||||
q.processBatch()
|
||||
} else {
|
||||
q.processIndividual()
|
||||
}
|
||||
|
||||
q.wg.Wait()
|
||||
close(q.errorc)
|
||||
|
||||
q.bar.Finish()
|
||||
}
|
||||
|
||||
// Errors returns any errors encountered during uploading.
|
||||
func (q *UploadQueue) Errors() []*WrappedError {
|
||||
return q.errors
|
||||
func NewUploadQueue(workers, files int) *TransferQueue {
|
||||
q := newTransferQueue(workers, files)
|
||||
q.transferKind = "upload"
|
||||
return q
|
||||
}
|
||||
|
||||
// ensureFile makes sure that the cleanPath exists before pushing it. If it
|
||||
|
Loading…
Reference in New Issue
Block a user