本文整理匯總了Golang中camlistore/org/pkg/sorted.BatchMutation類的典型用法代碼示例。如果您正苦於以下問題：Golang BatchMutation類的具體用法？Golang BatchMutation怎麽用？Golang BatchMutation使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了BatchMutation類的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: reindexOne
func (s *storage) reindexOne(ctx *context.Context, index sorted.KeyValue, overwrite bool, packID int) error {
var batch sorted.BatchMutation
if overwrite {
batch = index.BeginBatch()
}
allOk := true
// TODO(tgulacsi): proper verbose from context
verbose := camliDebug
err := s.walkPack(verbose, packID,
func(packID int, ref blob.Ref, offset int64, size uint32) error {
if !ref.Valid() {
if camliDebug {
log.Printf("found deleted blob in %d at %d with size %d", packID, offset, size)
}
return nil
}
meta := blobMeta{packID, offset, size}.String()
if overwrite && batch != nil {
batch.Set(ref.String(), meta)
} else {
if old, err := index.Get(ref.String()); err != nil {
allOk = false
if err == sorted.ErrNotFound {
log.Println(ref.String() + ": cannot find in index!")
} else {
log.Println(ref.String()+": error getting from index: ", err.Error())
}
} else if old != meta {
allOk = false
log.Printf("%s: index mismatch - index=%s data=%s", ref.String(), old, meta)
}
}
return nil
})
if err != nil {
return err
}
if overwrite && batch != nil {
log.Printf("overwriting %s from %d", index, packID)
if err = index.CommitBatch(batch); err != nil {
return err
}
} else if !allOk {
return fmt.Errorf("index does not match data in %d", packID)
}
return nil
}示例2: CommitBatch
func (kv *KeyValue) CommitBatch(bm sorted.BatchMutation) error {
kv.mu.RLock()
defer kv.mu.RUnlock()
b, ok := bm.(*batch)
if !ok {
return fmt.Errorf("unexpected BatchMutation type %T", bm)
}
var (
// A batch mutation for applying this mutation to the buffer.
bmbuf = kv.buf.BeginBatch()
// A lazily created batch mutation for deleting from the backing
// storage; this should be rare. (See Delete above.)
bmback sorted.BatchMutation
)
for _, m := range b.mods {
if m.isDelete {
bmbuf.Delete(m.key)
if bmback == nil {
bmback = kv.back.BeginBatch()
}
bmback.Delete(m.key)
continue
} else {
if err := sorted.CheckSizes(m.key, m.value); err != nil {
log.Printf("Skipping storing (%q:%q): %v", m.key, m.value, err)
continue
}
}
bmbuf.Set(m.key, m.value)
}
if err := kv.buf.CommitBatch(bmbuf); err != nil {
return err
}
if bmback != nil {
return kv.back.CommitBatch(bmback)
}
return nil
}示例3: reindexOne
func (s *storage) reindexOne(ctx *context.Context, index sorted.KeyValue, overwrite bool, packID int) error {
var batch sorted.BatchMutation
if overwrite {
batch = index.BeginBatch()
}
allOk := true
// TODO(tgulacsi): proper verbose from context
verbose := env.IsDebug()
misses := make(map[blob.Ref]string, 8)
err := s.walkPack(verbose, packID,
func(packID int, ref blob.Ref, offset int64, size uint32) error {
if !ref.Valid() {
if verbose {
log.Printf("found deleted blob in %d at %d with size %d", packID, offset, size)
}
return nil
}
meta := blobMeta{packID, offset, size}.String()
if overwrite && batch != nil {
batch.Set(ref.String(), meta)
return nil
}
if _, ok := misses[ref]; ok { // maybe this is the last of this blob.
delete(misses, ref)
}
if old, err := index.Get(ref.String()); err != nil {
allOk = false
if err == sorted.ErrNotFound {
log.Println(ref.String() + ": cannot find in index!")
} else {
log.Println(ref.String()+": error getting from index: ", err.Error())
}
} else if old != meta {
if old > meta {
misses[ref] = meta
log.Printf("WARN: possible duplicate blob %s", ref.String())
} else {
allOk = false
log.Printf("ERROR: index mismatch for %s - index=%s, meta=%s!", ref.String(), old, meta)
}
}
return nil
})
if err != nil {
return err
}
for ref, meta := range misses {
log.Printf("ERROR: index mismatch for %s (%s)!", ref.String(), meta)
allOk = false
}
if overwrite && batch != nil {
if err := index.CommitBatch(batch); err != nil {
return err
}
} else if !allOk {
return fmt.Errorf("index does not match data in %d", packID)
}
return nil
}示例4: reindexOne
func reindexOne(index sorted.KeyValue, overwrite, verbose bool, r io.ReadSeeker, name string, packId int64) error {
l, err := lock.Lock(name + ".lock")
defer l.Close()
var pos, size int64
errAt := func(prefix, suffix string) error {
if prefix != "" {
prefix = prefix + " "
}
if suffix != "" {
suffix = " " + suffix
}
return fmt.Errorf(prefix+"at %d (0x%x) in %q:"+suffix, pos, pos, name)
}
var batch sorted.BatchMutation
if overwrite {
batch = index.BeginBatch()
}
allOk := true
br := bufio.NewReaderSize(r, 512)
for {
if b, err := br.ReadByte(); err != nil {
if err == io.EOF {
break
}
return errAt("error while reading", err.Error())
} else if b != '[' {
return errAt(fmt.Sprintf("found byte 0x%x", b), "but '[' should be here!")
}
chunk, err := br.ReadSlice(']')
if err != nil {
if err == io.EOF {
break
}
return errAt("error reading blob header", err.Error())
}
m := len(chunk)
chunk = chunk[:m-1]
i := bytes.IndexByte(chunk, byte(' '))
if i <= 0 {
return errAt("", fmt.Sprintf("bad header format (no space in %q)", chunk))
}
if size, err = strconv.ParseInt(string(chunk[i+1:]), 10, 64); err != nil {
return errAt(fmt.Sprintf("cannot parse size %q as int", chunk[i+1:]), err.Error())
}
ref, ok := blob.Parse(string(chunk[:i]))
if !ok {
return errAt("", fmt.Sprintf("cannot parse %q as blobref", chunk[:i]))
}
if verbose {
log.Printf("found %s at %d", ref, pos)
}
meta := blobMeta{packId, pos + 1 + int64(m), size}.String()
if overwrite && batch != nil {
batch.Set(ref.String(), meta)
} else {
if old, err := index.Get(ref.String()); err != nil {
allOk = false
if err == sorted.ErrNotFound {
log.Println(ref.String() + ": cannot find in index!")
} else {
log.Println(ref.String()+": error getting from index: ", err.Error())
}
} else if old != meta {
allOk = false
log.Printf("%s: index mismatch - index=%s data=%s", ref.String(), old, meta)
}
}
pos += 1 + int64(m)
// TODO(tgulacsi78): not just seek, but check the hashes of the files
// maybe with a different command-line flag, only.
if pos, err = r.Seek(pos+size, 0); err != nil {
return errAt("", "cannot seek +"+strconv.FormatInt(size, 10)+" bytes")
}
// drain the buffer after the underlying reader Seeks
io.CopyN(ioutil.Discard, br, int64(br.Buffered()))
}
if overwrite && batch != nil {
log.Printf("overwriting %s from %s", index, name)
if err = index.CommitBatch(batch); err != nil {
return err
}
} else if !allOk {
return fmt.Errorf("index does not match data in %q", name)
}
return nil
}