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)
}
}
// pushCommand pushes local objects to a Git LFS server. It takes two
// arguments:
//
// `<remote> <remote ref>`
//
// Both a remote name ("origin") or a remote URL are accepted.
//
// pushCommand calculates the git objects to send by looking comparing the range
// of commits between the local and remote git servers.
func pushCommand(cmd *cobra.Command, args []string) {
var uploadQueue *lfs.TransferQueue
if len(args) == 0 {
Print("Specify a remote and a remote branch name (`git lfs push origin master`)")
os.Exit(1)
}
lfs.Config.CurrentRemote = args[0]
if useStdin {
requireStdin("Run this command from the Git pre-push hook, or leave the --stdin flag off.")
// called from a pre-push hook! Update the existing pre-push hook if it's
// one that git-lfs set.
lfs.InstallHooks(false)
refsData, err := ioutil.ReadAll(os.Stdin)
if err != nil {
Panic(err, "Error reading refs on stdin")
}
if len(refsData) == 0 {
return
}
left, right := decodeRefs(string(refsData))
if left == pushDeleteBranch {
return
}
uploadQueue = uploadsBetweenRefs(left, right)
} else if pushObjectIDs {
if len(args) < 2 {
Print("Usage: git lfs push --object-id <remote> <lfs-object-id> [lfs-object-id] ...")
return
}
uploadQueue = uploadsWithObjectIDs(args[1:])
} else {
if len(args) < 1 {
Print("Usage: git lfs push --dry-run <remote> [ref]")
return
}
uploadQueue = uploadsBetweenRefAndRemote(args[0], args[1:])
}
if !pushDryRun {
uploadQueue.Wait()
for _, err := range uploadQueue.Errors() {
if Debugging || lfs.IsFatalError(err) {
LoggedError(err, err.Error())
} else {
Error(err.Error())
}
}
if len(uploadQueue.Errors()) > 0 {
os.Exit(2)
}
}
}