// Background task, must call waitg.Done() once at end
func pruneTaskGetRetainedCurrentAndRecentRefs(retainChan chan string, errorChan chan error, waitg *sync.WaitGroup) {
defer waitg.Done()
// We actually increment the waitg in this func since we kick off sub-goroutines
// Make a list of what unique commits to keep, & search backward from
commits := lfs.NewStringSet()
// Do current first
ref, err := git.CurrentRef()
if err != nil {
errorChan <- err
return
}
commits.Add(ref.Sha)
waitg.Add(1)
go pruneTaskGetRetainedAtRef(ref.Sha, retainChan, errorChan, waitg)
// Now recent
fetchconf := lfs.Config.FetchPruneConfig()
if fetchconf.FetchRecentRefsDays > 0 {
pruneRefDays := fetchconf.FetchRecentRefsDays + fetchconf.PruneOffsetDays
tracerx.Printf("PRUNE: Retaining non-HEAD refs within %d (%d+%d) days", pruneRefDays, fetchconf.FetchRecentRefsDays, fetchconf.PruneOffsetDays)
refsSince := time.Now().AddDate(0, 0, -pruneRefDays)
// Keep all recent refs including any recent remote branches
refs, err := git.RecentBranches(refsSince, fetchconf.FetchRecentRefsIncludeRemotes, "")
if err != nil {
Panic(err, "Could not scan for recent refs")
}
for _, ref := range refs {
if commits.Add(ref.Sha) {
// A new commit
waitg.Add(1)
go pruneTaskGetRetainedAtRef(ref.Sha, retainChan, errorChan, waitg)
}
}
}
// For every unique commit we've fetched, check recent commits too
// Only if we're fetching recent commits, otherwise only keep at refs
if fetchconf.FetchRecentCommitsDays > 0 {
pruneCommitDays := fetchconf.FetchRecentCommitsDays + fetchconf.PruneOffsetDays
for commit := range commits.Iter() {
// We measure from the last commit at the ref
summ, err := git.GetCommitSummary(commit)
if err != nil {
errorChan <- fmt.Errorf("Couldn't scan commits at %v: %v", commit, err)
continue
}
commitsSince := summ.CommitDate.AddDate(0, 0, -pruneCommitDays)
waitg.Add(1)
go pruneTaskGetPreviousVersionsOfRef(commit, commitsSince, retainChan, errorChan, waitg)
}
}
}
// Fetch recent objects based on config
func fetchRecent(alreadyFetchedRefs []*git.Ref, include, exclude []string) bool {
fetchconf := lfs.Config.FetchPruneConfig()
if fetchconf.FetchRecentRefsDays == 0 && fetchconf.FetchRecentCommitsDays == 0 {
return true
}
ok := true
// Make a list of what unique commits we've already fetched for to avoid duplicating work
uniqueRefShas := make(map[string]string, len(alreadyFetchedRefs))
for _, ref := range alreadyFetchedRefs {
uniqueRefShas[ref.Sha] = ref.Name
}
// First find any other recent refs
if fetchconf.FetchRecentRefsDays > 0 {
Print("Fetching recent branches within %v days", fetchconf.FetchRecentRefsDays)
refsSince := time.Now().AddDate(0, 0, -fetchconf.FetchRecentRefsDays)
refs, err := git.RecentBranches(refsSince, fetchconf.FetchRecentRefsIncludeRemotes, lfs.Config.CurrentRemote)
if err != nil {
Panic(err, "Could not scan for recent refs")
}
for _, ref := range refs {
// Don't fetch for the same SHA twice
if prevRefName, ok := uniqueRefShas[ref.Sha]; ok {
if ref.Name != prevRefName {
tracerx.Printf("Skipping fetch for %v, already fetched via %v", ref.Name, prevRefName)
}
} else {
uniqueRefShas[ref.Sha] = ref.Name
Print("Fetching %v", ref.Name)
k := fetchRef(ref.Sha, include, exclude)
ok = ok && k
}
}
}
// For every unique commit we've fetched, check recent commits too
if fetchconf.FetchRecentCommitsDays > 0 {
for commit, refName := range uniqueRefShas {
// We measure from the last commit at the ref
summ, err := git.GetCommitSummary(commit)
if err != nil {
Error("Couldn't scan commits at %v: %v", refName, err)
continue
}
Print("Fetching changes within %v days of %v", fetchconf.FetchRecentCommitsDays, refName)
commitsSince := summ.CommitDate.AddDate(0, 0, -fetchconf.FetchRecentCommitsDays)
k := fetchPreviousVersions(commit, commitsSince, include, exclude)
ok = ok && k
}
}
return ok
}