// Run git command
func (g *Git) Run(sub string, arg ...string) (res string, err error) {
logx.Tracef("executing `git %s`", strings.Join(
append([]string{"-C", g.Root, "--no-pager", sub}, arg...), " "))
c := execCommand("git",
append([]string{"-C", g.Root, "--no-pager", sub}, arg...)...)
var out, stderr bytes.Buffer
c.Stdout = &out
c.Stderr = &stderr
err = c.Run()
if err != nil {
err = fmt.Errorf("%s %s", err, stderr.String())
}
res = out.String()
logx.Tracef("git >>> %s", res)
return
}
func (m *Mapper) remap(from, to string, arg ...string) (res []string, err error) {
logx.Tracef("remapping from %s to %s %s", from, to, arg)
if filepath.ToSlash(from) == filepath.ToSlash(to) {
res = arg
return
}
var one string
for _, p := range arg {
if one, err = filepath.Rel(OSFromSlash(to), OSFromSlash(OSJoin(from, p))); err != nil {
logx.Errorf(">>> %s %s %s", err, OSJoin(from, p), to)
return
}
res = append(res, one)
}
logx.Tracef("remapped %s", res)
return
}
func (m *Model) SquashBlobs(blobs lists.BlobMap) (err error) {
logx.Tracef("squashing blobs %s", blobs.IDMap())
var req, res []interface{}
for _, v := range blobs.ToSlice() {
req = append(req, v)
}
err = m.BatchPool.Do(
func(ctx context.Context, in interface{}) (out interface{}, err error) {
r := in.(lists.BlobLink)
lock, err := m.FdLocks.Take()
if err != nil {
return
}
defer lock.Release()
absname := filepath.Join(m.WD, r.Name)
backName := absname + ".bar-backup"
os.Rename(absname, absname+".bar-backup")
os.MkdirAll(filepath.Dir(absname), 0755)
w, err := os.Create(absname)
if err != nil {
return
}
err = r.Manifest.Serialize(w)
if err != nil {
os.Remove(absname)
os.Rename(backName, absname)
return
}
defer os.Remove(backName)
logx.Debugf("squashed %s", r.Name)
return
},
&req, &res, concurrency.DefaultBatchOptions().AllowErrors(),
)
if err != nil {
return
}
logx.Infof("blob %s squashed successfully", blobs.Names())
return
}
// Assemble target files from stored chunks
func (a *Assembler) Done(what lists.BlobMap) (err error) {
logx.Tracef("assembling %s", what.Names())
var req, res []interface{}
for k, v := range what {
req = append(req, lists.BlobLink{v, k})
}
err = a.model.BatchPool.Do(
func(ctx context.Context, in interface{}) (out interface{}, err error) {
r := in.(lists.BlobLink)
lock, err := a.model.FdLocks.Take()
if err != nil {
return
}
defer lock.Release()
w, err := os.Create(filepath.Join(a.model.WD,
r.Name+r.Manifest.ID.String()))
if err != nil {
return
}
defer w.Close()
for _, chunk := range r.Manifest.Chunks {
if err = a.writeChunkTo(w, chunk.ID); err != nil {
return
}
}
err = a.commitBlob(r.Name, r.Manifest.ID)
return
}, &req, &res, concurrency.DefaultBatchOptions().AllowErrors(),
)
if err != nil {
return
}
defer a.Close()
return
}
func (m *Model) getManifest(name string, blobs, manifests bool) (res *proto.Manifest, err error) {
lock, err := m.FdLocks.Take()
if err != nil {
return
}
defer lock.Release()
logx.Tracef("feeding manifest from %s",
lists.OSFromSlash(lists.OSJoin(m.WD, name)))
f, err := os.Open(lists.OSFromSlash(lists.OSJoin(m.WD, name)))
if err != nil {
logx.Errorf("!!! %s", err)
return
}
defer f.Close()
var r io.Reader
var isManifest bool
if r, isManifest, err = proto.PeekManifest(f); err != nil {
return
}
if (isManifest && !manifests) || (!isManifest && !blobs) {
return
}
if isManifest {
res, err = proto.NewFromManifest(r)
return
}
// Hard way. First - try git
var sideR io.Reader
if m.Git != nil {
if sideR = m.getGitReader(name); sideR != nil {
res, err = proto.NewFromAny(sideR, m.chunkSize)
return
}
}
// No git - make from blob
res, err = proto.NewFromBLOB(r, m.chunkSize)
return
}
