// This checks the given slice of pointers that don't exist in .git/lfs/objects
// against the server. Anything the server already has does not need to be
// uploaded again.
func (c *uploadContext) checkMissing(missing []*lfs.WrappedPointer, missingSize int64) {
numMissing := len(missing)
if numMissing == 0 {
return
}
checkQueue := lfs.NewDownloadCheckQueue(numMissing, missingSize)
for _, p := range missing {
checkQueue.Add(lfs.NewDownloadable(p))
}
// this channel is filled with oids for which Check() succeeded & Transfer() was called
transferc := checkQueue.Watch()
done := make(chan int)
go func() {
for oid := range transferc {
c.SetUploaded(oid)
}
done <- 1
}()
// Currently this is needed to flush the batch but is not enough to sync transferc completely
checkQueue.Wait()
<-done
}
func prePushCheckForMissingObjects(pointers []*lfs.WrappedPointer) (objectsOnServer map[string]struct{}) {
var missingLocalObjects []*lfs.WrappedPointer
var missingSize int64
var skipObjects = make(map[string]struct{}, len(pointers))
for _, pointer := range pointers {
if !lfs.ObjectExistsOfSize(pointer.Oid, pointer.Size) {
// We think we need to push this but we don't have it
// Store for server checking later
missingLocalObjects = append(missingLocalObjects, pointer)
missingSize += pointer.Size
}
}
if len(missingLocalObjects) == 0 {
return nil
}
checkQueue := lfs.NewDownloadCheckQueue(len(missingLocalObjects), missingSize, false)
for _, p := range missingLocalObjects {
checkQueue.Add(lfs.NewDownloadCheckable(p))
}
// this channel is filled with oids for which Check() succeeded & Transfer() was called
transferc := checkQueue.Watch()
go func() {
for oid := range transferc {
skipObjects[oid] = struct{}{}
}
}()
checkQueue.Wait()
return skipObjects
}
func prePushCheckForMissingObjects(pointers []*lfs.WrappedPointer) (objectsOnServer lfs.StringSet) {
var missingLocalObjects []*lfs.WrappedPointer
var missingSize int64
var skipObjects = lfs.NewStringSetWithCapacity(len(pointers))
for _, pointer := range pointers {
if !lfs.ObjectExistsOfSize(pointer.Oid, pointer.Size) {
// We think we need to push this but we don't have it
// Store for server checking later
missingLocalObjects = append(missingLocalObjects, pointer)
missingSize += pointer.Size
}
}
if len(missingLocalObjects) == 0 {
return nil
}
checkQueue := lfs.NewDownloadCheckQueue(len(missingLocalObjects), missingSize, true)
for _, p := range missingLocalObjects {
checkQueue.Add(lfs.NewDownloadCheckable(p))
}
// this channel is filled with oids for which Check() succeeded & Transfer() was called
transferc := checkQueue.Watch()
done := make(chan int)
go func() {
for oid := range transferc {
skipObjects.Add(oid)
}
done <- 1
}()
// Currently this is needed to flush the batch but is not enough to sync transferc completely
checkQueue.Wait()
<-done
return skipObjects
}
func prune(verifyRemote, dryRun, verbose bool) {
localObjects := make([]localstorage.Object, 0, 100)
retainedObjects := lfs.NewStringSetWithCapacity(100)
var reachableObjects lfs.StringSet
var taskwait sync.WaitGroup
// Add all the base funcs to the waitgroup before starting them, in case
// one completes really fast & hits 0 unexpectedly
// each main process can Add() to the wg itself if it subdivides the task
taskwait.Add(4) // 1..4: localObjects, current & recent refs, unpushed, worktree
if verifyRemote {
taskwait.Add(1) // 5
}
progressChan := make(PruneProgressChan, 100)
// Collect errors
errorChan := make(chan error, 10)
var errorwait sync.WaitGroup
errorwait.Add(1)
var taskErrors []error
go pruneTaskCollectErrors(&taskErrors, errorChan, &errorwait)
// Populate the single list of local objects
go pruneTaskGetLocalObjects(&localObjects, progressChan, &taskwait)
// Now find files to be retained from many sources
retainChan := make(chan string, 100)
go pruneTaskGetRetainedCurrentAndRecentRefs(retainChan, errorChan, &taskwait)
go pruneTaskGetRetainedUnpushed(retainChan, errorChan, &taskwait)
go pruneTaskGetRetainedWorktree(retainChan, errorChan, &taskwait)
if verifyRemote {
reachableObjects = lfs.NewStringSetWithCapacity(100)
go pruneTaskGetReachableObjects(&reachableObjects, errorChan, &taskwait)
}
// Now collect all the retained objects, on separate wait
var retainwait sync.WaitGroup
retainwait.Add(1)
go pruneTaskCollectRetained(&retainedObjects, retainChan, progressChan, &retainwait)
// Report progress
var progresswait sync.WaitGroup
progresswait.Add(1)
go pruneTaskDisplayProgress(progressChan, &progresswait)
taskwait.Wait() // wait for subtasks
close(retainChan) // triggers retain collector to end now all tasks have
retainwait.Wait() // make sure all retained objects added
close(errorChan) // triggers error collector to end now all tasks have
errorwait.Wait() // make sure all errors have been processed
pruneCheckErrors(taskErrors)
prunableObjects := make([]string, 0, len(localObjects)/2)
// Build list of prunables (also queue for verify at same time if applicable)
var verifyQueue *lfs.TransferQueue
var verifiedObjects lfs.StringSet
var totalSize int64
var verboseOutput bytes.Buffer
if verifyRemote {
lfs.Config.CurrentRemote = lfs.Config.FetchPruneConfig().PruneRemoteName
// build queue now, no estimates or progress output
verifyQueue = lfs.NewDownloadCheckQueue(0, 0, true)
verifiedObjects = lfs.NewStringSetWithCapacity(len(localObjects) / 2)
}
for _, file := range localObjects {
if !retainedObjects.Contains(file.Oid) {
prunableObjects = append(prunableObjects, file.Oid)
totalSize += file.Size
if verbose {
// Save up verbose output for the end, spinner still going
verboseOutput.WriteString(fmt.Sprintf(" * %v (%v)\n", file.Oid, humanizeBytes(file.Size)))
}
if verifyRemote {
tracerx.Printf("VERIFYING: %v", file.Oid)
pointer := lfs.NewPointer(file.Oid, file.Size, nil)
verifyQueue.Add(lfs.NewDownloadCheckable(&lfs.WrappedPointer{Pointer: pointer}))
}
}
}
if verifyRemote {
// this channel is filled with oids for which Check() succeeded & Transfer() was called
verifyc := verifyQueue.Watch()
var verifywait sync.WaitGroup
verifywait.Add(1)
go func() {
for oid := range verifyc {
verifiedObjects.Add(oid)
tracerx.Printf("VERIFIED: %v", oid)
progressChan <- PruneProgress{PruneProgressTypeVerify, 1}
}
verifywait.Done()
}()
verifyQueue.Wait()
verifywait.Wait()
close(progressChan) // after verify (uses spinner) but before check
progresswait.Wait()
pruneCheckVerified(prunableObjects, reachableObjects, verifiedObjects)
} else {
close(progressChan)
progresswait.Wait()
}
if len(prunableObjects) == 0 {
Print("Nothing to prune")
return
}
if dryRun {
Print("%d files would be pruned (%v)", len(prunableObjects), humanizeBytes(totalSize))
if verbose {
Print(verboseOutput.String())
}
} else {
Print("Pruning %d files, (%v)", len(prunableObjects), humanizeBytes(totalSize))
if verbose {
Print(verboseOutput.String())
}
pruneDeleteFiles(prunableObjects)
}
}