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package commands
import (
"fmt"
"os"
"sync"
"time"
"github.com/git-lfs/git-lfs/v3/filepathfilter"
"github.com/git-lfs/git-lfs/v3/git"
"github.com/git-lfs/git-lfs/v3/lfs"
"github.com/git-lfs/git-lfs/v3/tasklog"
"github.com/git-lfs/git-lfs/v3/tq"
"github.com/git-lfs/git-lfs/v3/tr"
"github.com/rubyist/tracerx"
"github.com/spf13/cobra"
)
func pullCommand(cmd *cobra.Command, args []string) {
requireGitVersion()
setupRepository()
if len(args) > 0 {
// Remote is first arg
if err := cfg.SetValidRemote(args[0]); err != nil {
Exit(tr.Tr.Get("Invalid remote name %q: %s", args[0], err))
}
}
includeArg, excludeArg := getIncludeExcludeArgs(cmd)
filter := buildFilepathFilter(cfg, includeArg, excludeArg, true)
pull(filter)
}
func pull(filter *filepathfilter.Filter) {
ref, err := git.CurrentRef()
if err != nil {
Panic(err, tr.Tr.Get("Could not pull"))
}
pointers := newPointerMap()
logger := tasklog.NewLogger(os.Stdout,
tasklog.ForceProgress(cfg.ForceProgress()),
)
meter := tq.NewMeter(cfg)
meter.Logger = meter.LoggerFromEnv(cfg.Os)
logger.Enqueue(meter)
remote := cfg.Remote()
singleCheckout := newSingleCheckout(cfg.Git, remote)
q := newDownloadQueue(singleCheckout.Manifest(), remote, tq.WithProgress(meter))
gitscanner := lfs.NewGitScanner(cfg, func(p *lfs.WrappedPointer, err error) {
if err != nil {
LoggedError(err, tr.Tr.Get("Scanner error: %s", err))
return
}
if pointers.Seen(p) {
return
}
// no need to download objects that exist locally already
lfs.LinkOrCopyFromReference(cfg, p.Oid, p.Size)
if cfg.LFSObjectExists(p.Oid, p.Size) {
singleCheckout.Run(p)
return
}
meter.Add(p.Size)
tracerx.Printf("fetch %v [%v]", p.Name, p.Oid)
pointers.Add(p)
q.Add(downloadTransfer(p))
})
gitscanner.Filter = filter
dlwatch := q.Watch()
var wg sync.WaitGroup
wg.Add(1)
go func() {
for t := range dlwatch {
for _, p := range pointers.All(t.Oid) {
singleCheckout.Run(p)
}
}
wg.Done()
}()
processQueue := time.Now()
if err := gitscanner.ScanLFSFiles(ref.Sha, nil); err != nil {
singleCheckout.Close()
ExitWithError(err)
}
meter.Start()
q.Wait()
wg.Wait()
tracerx.PerformanceSince("process queue", processQueue)
singleCheckout.Close()
success := true
for _, err := range q.Errors() {
success = false
FullError(err)
}
if !success {
c := getAPIClient()
e := c.Endpoints.Endpoint("download", remote)
Exit(tr.Tr.Get("Failed to fetch some objects from '%s'", e.Url))
}
if singleCheckout.Skip() {
fmt.Println(tr.Tr.Get("Skipping object checkout, Git LFS is not installed for this repository.\nConsider installing it with 'git lfs install'."))
}
}
// tracks LFS objects being downloaded, according to their unique OIDs.
type pointerMap struct {
pointers map[string][]*lfs.WrappedPointer
mu sync.Mutex
}
func newPointerMap() *pointerMap {
return &pointerMap{pointers: make(map[string][]*lfs.WrappedPointer)}
}
func (m *pointerMap) Seen(p *lfs.WrappedPointer) bool {
m.mu.Lock()
defer m.mu.Unlock()
if existing, ok := m.pointers[p.Oid]; ok {
m.pointers[p.Oid] = append(existing, p)
return true
}
return false
}
func (m *pointerMap) Add(p *lfs.WrappedPointer) {
m.mu.Lock()
defer m.mu.Unlock()
m.pointers[p.Oid] = append(m.pointers[p.Oid], p)
}
func (m *pointerMap) All(oid string) []*lfs.WrappedPointer {
m.mu.Lock()
defer m.mu.Unlock()
pointers := m.pointers[oid]
delete(m.pointers, oid)
return pointers
}
func init() {
RegisterCommand("pull", pullCommand, func(cmd *cobra.Command) {
cmd.Flags().StringVarP(&includeArg, "include", "I", "", "Include a list of paths")
cmd.Flags().StringVarP(&excludeArg, "exclude", "X", "", "Exclude a list of paths")
})
}
|
