Golang ybc.Cacher类代码示例

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本文整理汇总了Golang中github.com/valyala/ybc/bindings/go/ybc.Cacher类的典型用法代码示例。如果您正苦于以下问题：Golang Cacher类的具体用法？Golang Cacher怎么用？Golang Cacher使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Cacher类的19个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: cGetDeFromCache

func cGetDeFromCache(cache ybc.Cacher, key []byte, etag *uint64, graceDuration time.Duration) (item *ybc.Item, err error) {
	item, err = cache.GetDeAsyncItem(key, graceDuration)
	if err == ybc.ErrCacheMiss || err == ybc.ErrWouldBlock {
		return
	}
	if err != nil {
		log.Fatalf("Unexpected error returned from Cache.GetItem() for key=[%s]: [%s]", key, err)
	}
	defer func() {
		if err != nil {
			item.Close()
		}
	}()

	etagOld := *etag
	if err = binaryRead(item, etag, "etag"); err != nil {
		return
	}
	if etagOld == *etag {
		item.Close()
		item = nil
		return
	}
	return
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:25，代码来源:server.go

示例2: processGetDeCmd

func processGetDeCmd(c *bufio.ReadWriter, cache ybc.Cacher, line []byte, scratchBuf *[]byte) bool {
	n := -1

	key := nextToken(line, &n, "key")
	if key == nil {
		return false
	}
	graceDuration, ok := parseMillisecondsToken(line, &n, "graceDuration")
	if !ok {
		return false
	}
	if !expectEof(line, n) {
		return false
	}

	item, err := cache.GetDeAsyncItem(key, graceDuration)
	if err != nil {
		if err == ybc.ErrWouldBlock {
			return writeStr(c.Writer, strWouldBlockCrLf)
		}
		if err == ybc.ErrCacheMiss {
			return writeEndCrLf(c.Writer)
		}
		log.Fatalf("Unexpected error returned by Cache.GetDeAsyncItem(): [%s]", err)
	}
	// do not use defer item.Close() for performance reasons

	ok = writeGetResponseWithEof(c.Writer, key, item, scratchBuf)
	item.Close()
	return ok
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:31，代码来源:server.go

示例3: processDeleteCmd

func processDeleteCmd(c *bufio.ReadWriter, cache ybc.Cacher, line []byte, scratchBuf *[]byte) bool {
	n := -1

	key := nextToken(line, &n, "key")
	if key == nil {
		return false
	}

	noreply := false
	if n < len(line) {
		if !expectNoreply(line, &n) {
			return false
		}
		noreply = true
	}
	if !expectEof(line, n) {
		return false
	}

	ok := cache.Delete(key)
	if noreply {
		return true
	}

	response := strDeleted
	if !ok {
		response = strNotFound
	}
	return writeStr(c.Writer, response) && writeCrLf(c.Writer)
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:30，代码来源:server.go

示例4: cGetFromCache

func cGetFromCache(cache ybc.Cacher, key []byte, etag *uint64) (item *ybc.Item, err error) {
	item, err = cache.GetItem(key)
	if err == ybc.ErrCacheMiss {
		return
	}
	if err != nil {
		log.Fatalf("Unexpected error returned from Cache.GetItem() for key=[%s]: [%s]", key, err)
	}
	defer func() {
		if err != nil {
			item.Close()
		}
	}()

	etagOld := *etag
	if err = binaryRead(item, etag, "etag"); err != nil {
		return
	}
	if etagOld == *etag {
		item.Close()
		item = nil
		return
	}
	return
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:25，代码来源:server.go

示例5: getCasidForCachedItem

func getCasidForCachedItem(cache ybc.Cacher, key []byte) (casid uint64, cacheMiss, ok bool) {
	item, err := cache.GetItem(key)
	if err != nil {
		if err == ybc.ErrCacheMiss {
			cacheMiss = true
			return
		}
		log.Fatalf("Unexpected error returned from Cache.GetItem() for key=[%s]: [%s]", key, err)
	}
	// do not use defer item.Close() for performance reasons

	var buf [casidSize]byte
	n, err := item.Read(buf[:])
	item.Close()
	if err != nil {
		log.Printf("Error when reading casid for the item: [%s]", err)
		return
	}
	if n != len(buf) {
		log.Printf("Unexpected result returned from ybc.Item.Read(): %d. Expected %d", n, len(buf))
		return
	}
	casid = binary.LittleEndian.Uint64(buf[:])
	ok = true
	return
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:26，代码来源:server.go

示例6: setToCache

func setToCache(cache ybc.Cacher, key []byte, flags uint32, expiration time.Duration, size int) *ybc.SetTxn {
	size += binary.Size(&flags)
	txn, err := cache.NewSetTxn(key, size, expiration)
	if err != nil {
		log.Printf("Error in Cache.NewSetTxn() for key=[%s], size=[%d], expiration=[%s]: [%s]", key, size, expiration, err)
		return nil
	}
	binaryWrite(txn, &flags, "flags")
	return txn
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:10，代码来源:server.go

示例7: cachedItemExists

func cachedItemExists(cache ybc.Cacher, key []byte) bool {
	item, err := cache.GetItem(key)
	if err == ybc.ErrCacheMiss {
		return false
	}
	if err != nil {
		log.Fatalf("Unexpected error returned from Cacher.GetItem(): [%s]", err)
	}
	item.Close()
	return true
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:11，代码来源:server.go

示例8: getItemAndWriteResponse

func getItemAndWriteResponse(w *bufio.Writer, cache ybc.Cacher, key []byte, cas bool, scratchBuf *[]byte) bool {
	item, err := cache.GetItem(key)
	if err != nil {
		if err == ybc.ErrCacheMiss {
			return true
		}
		log.Fatalf("Unexpected error returned by cache.GetItem(key=[%s]): [%s]", key, err)
	}
	defer item.Close()

	return writeGetResponse(w, key, item, cas, scratchBuf)
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:12，代码来源:server.go

示例9: cSetToCache

func cSetToCache(cache ybc.Cacher, key []byte, size int, flags uint32, expiration time.Duration, etag uint64, validateTtl uint32) *ybc.SetTxn {
	size += binary.Size(&etag) + binary.Size(&validateTtl) + binary.Size(&flags)
	txn, err := cache.NewSetTxn(key, size, expiration)
	if err != nil {
		log.Printf("Error in Cache.NewSetTxn() for key=[%s], size=[%d], expiration=[%s]: [%s]", key, size, expiration, err)
		return nil
	}
	binaryWrite(txn, &etag, "etag")
	binaryWrite(txn, &validateTtl, "validateTtl")
	binaryWrite(txn, &flags, "flags")
	return txn
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:12，代码来源:server.go

示例10: getItemAndWriteResponse

func getItemAndWriteResponse(w *bufio.Writer, cache ybc.Cacher, key []byte, shouldWriteCasid bool, scratchBuf *[]byte) bool {
	item, err := cache.GetItem(key)
	if err != nil {
		if err == ybc.ErrCacheMiss {
			return true
		}
		log.Fatalf("Unexpected error returned by cache.GetItem(key=[%s]): [%s]", key, err)
	}
	// do not use defer item.Close() for performance reasons

	ok := writeGetResponse(w, key, item, shouldWriteCasid, scratchBuf)
	item.Close()
	return ok
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:14，代码来源:server.go

示例11: revalidateAndSetItemValueInternal

func revalidateAndSetItemValueInternal(client Ccacher, cache ybc.Cacher, it *ybc.Item, item *Item, casid uint64, flags, validateTtl uint32, getFunc func() error) error {
	if err := getFunc(); err != nil {
		if err == ErrNotModified {
			if validateTtl > 0 {
				updateLocalItem(cache, it, item.Key, casid, flags, validateTtl)
			}
			return setItemValue(it, item)
		}
		if err == ErrCacheMiss {
			cache.Delete(item.Key)
		}
		return err
	}
	return cacheItem(cache, item)
}

开发者ID:kangkot，项目名称:ybc，代码行数:15，代码来源:caching_client.go

示例12: processFlushAllCmd

func processFlushAllCmd(c *bufio.ReadWriter, cache ybc.Cacher, line []byte, flushAllTimer **time.Timer) bool {
	expiration, noreply, ok := parseFlushAllCmd(line)
	if !ok {
		return false
	}
	(*flushAllTimer).Stop()
	if expiration <= 0 {
		cache.Clear()
	} else {
		*flushAllTimer = time.AfterFunc(expiration, cacheClearFunc(cache))
	}
	if noreply {
		return true
	}
	return writeStr(c.Writer, strOkCrLf)
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:16，代码来源:server.go

示例13: writeItemMetadata

func writeItemMetadata(cache ybc.Cacher, key []byte, size int, ttl time.Duration, etag uint64, validateTtl uint32, flags uint32) *ybc.SetTxn {
	validateExpiration64 := uint64(time.Now().Add(time.Duration(validateTtl) * time.Millisecond).UnixNano())

	size += binary.Size(&etag) + binary.Size(&validateTtl) + binary.Size(flags) + binary.Size(&validateExpiration64)
	txn, err := cache.NewSetTxn(key, size, ttl)
	if err != nil {
		log.Printf("Unexpected error in Cache.NewSetTxn(size=%d): [%s]", size, err)
		return nil
	}

	binaryWrite(txn, &etag, "etag")
	binaryWrite(txn, &validateTtl, "validateTtl")
	binaryWrite(txn, &flags, "flags")
	binaryWrite(txn, &validateExpiration64, "validateExpiration")

	return txn
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:17，代码来源:caching_client.go

示例14: processCgetDeCmd

func processCgetDeCmd(c *bufio.ReadWriter, cache ybc.Cacher, line []byte, scratchBuf *[]byte) bool {
	n := -1

	key := nextToken(line, &n, "key")
	if key == nil {
		return false
	}
	casid, ok := parseUint64Token(line, &n, "casid")
	if !ok {
		return false
	}
	graceDuration, ok := parseMillisecondsToken(line, &n, "graceDuration")
	if !ok {
		return false
	}
	if !expectEof(line, n) {
		return false
	}

	item, err := cache.GetDeAsyncItem(key, graceDuration)
	if err == ybc.ErrWouldBlock {
		return writeStr(c.Writer, strWouldBlockCrLf)
	}
	if err == ybc.ErrCacheMiss {
		return writeStr(c.Writer, strEndCrLf)
	}
	if err != nil {
		log.Fatalf("Unexpected error returned: [%s]", err)
	}
	// do not use defer item.Close() for performance reasons

	isModified, ok := checkAndUpdateCasid(item, &casid)
	if !ok {
		item.Close()
		return false
	}
	if !isModified {
		item.Close()
		return writeStr(c.Writer, strNotModifiedCrLf)
	}

	ok = writeGetResponseWithEof(c.Writer, key, item, scratchBuf)
	item.Close()
	return ok
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:45，代码来源:server.go

示例15: processDeleteCmd

func processDeleteCmd(c *bufio.ReadWriter, cache ybc.Cacher, line []byte, scratchBuf *[]byte) bool {
	n := -1

	key := nextToken(line, &n, "key")
	if key == nil {
		return false
	}

	noreply := false
	if n < len(line) {
		s := nextToken(line, &n, "noreply_or_exptime")
		if s == nil {
			return false
		}
		if !bytes.Equal(s, strNoreply) {
			if _, ok := parseUint32(s); !ok {
				return false
			}
			if n < len(line) {
				if !expectNoreply(line, &n) {
					return false
				}
				noreply = true
			}
		} else {
			noreply = true
		}
	}
	if !expectEof(line, n) {
		return false
	}

	ok := cache.Delete(key)
	if noreply {
		return true
	}

	response := strDeletedCrLf
	if !ok {
		response = strNotFoundCrLf
	}
	return writeStr(c.Writer, response)
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:43，代码来源:server.go

示例16: startSetTxn

func startSetTxn(cache ybc.Cacher, key []byte, flags uint32, expiration time.Duration, size int) *ybc.SetTxn {
	casid := getCasid()
	size += casidSize + flagsSize
	txn, err := cache.NewSetTxn(key, size, expiration)
	if err != nil {
		log.Printf("Error in Cache.NewSetTxn() for key=[%s], size=[%d], expiration=[%s]: [%s]", key, size, expiration, err)
		return nil
	}

	var buf [casidSize + flagsSize]byte
	binary.LittleEndian.PutUint64(buf[:casidSize], casid)
	binary.LittleEndian.PutUint32(buf[casidSize:], flags)
	n, err := txn.Write(buf[:])
	if err != nil {
		log.Fatalf("Error in SetTxn.Write(): [%s]", err)
	}
	if n != len(buf) {
		log.Fatalf("Unexpected result returned from SetTxn.Write(): %d. Expected %d", n, len(buf))
	}
	return txn
}

开发者ID:rjmcguire，项目名称:ybc，代码行数:21，代码来源:server.go

示例17: revalidateAndSetItemValueInternal

func revalidateAndSetItemValueInternal(client Ccacher, cache ybc.Cacher, it *ybc.Item, item *Item, etag uint64, validateTtl uint32, getFunc func(*Citem) error) error {
	citem := Citem{
		Item: Item{
			Key: item.Key,
		},
		Etag: etag,
	}
	if err := getFunc(&citem); err != nil {
		if err == ErrNotModified {
			if validateTtl > 0 {
				updateLocalItem(cache, it, item, etag, validateTtl)
			}
			return setItemValue(it, item)
		}
		if err == ErrCacheMiss {
			cache.Delete(item.Key)
		}
		return err
	}
	cacheCitem(cache, &citem)
	item.Value = citem.Value
	return nil
}

开发者ID:inthecloud247，项目名称:ybc，代码行数:23，代码来源:caching_client.go

示例18: writeItemMetadata

func writeItemMetadata(cache ybc.Cacher, key []byte, size int, casid uint64, flags, validateTtl uint32) *ybc.SetTxn {
	validateExpiration64 := uint64(time.Now().Add(time.Duration(validateTtl) * time.Millisecond).UnixNano())

	size += metadataSize
	txn, err := cache.NewSetTxn(key, size, ybc.MaxTtl)
	if err != nil {
		log.Printf("Unexpected error in Cache.NewSetTxn(size=%d): [%s]", size, err)
		return nil
	}

	var buf [metadataSize]byte
	binary.LittleEndian.PutUint64(buf[:casidSize], casid)
	binary.LittleEndian.PutUint32(buf[casidSize:], flags)
	binary.LittleEndian.PutUint32(buf[casidSize+flagsSize:], validateTtl)
	binary.LittleEndian.PutUint64(buf[casidSize+flagsSize+validateTtlSize:], validateExpiration64)
	n, err := txn.Write(buf[:])
	if err != nil {
		log.Fatalf("Error in SetTxn.Write(): [%s]", err)
	}
	if n != len(buf) {
		log.Fatalf("Unexpected result returned from SetTxn.Write(): %d. Expected %d", n, len(buf))
	}
	return txn
}

开发者ID:kangkot，项目名称:ybc，代码行数:24，代码来源:caching_client.go

示例19: main

func main() {
	iniflags.Parse()

	runtime.GOMAXPROCS(*goMaxProcs)

	syncInterval_ := *syncInterval
	if syncInterval_ <= 0 {
		syncInterval_ = ybc.ConfigDisableSync
	}
	config := ybc.Config{
		MaxItemsCount:   ybc.SizeT(*maxItemsCount),
		DataFileSize:    ybc.SizeT(*cacheSize) * ybc.SizeT(1024*1024),
		HotItemsCount:   ybc.SizeT(*hotItemsCount),
		HotDataSize:     ybc.SizeT(*hotDataSize),
		DeHashtableSize: *deHashtableSize,
		SyncInterval:    syncInterval_,
	}

	var cache ybc.Cacher
	var err error

	cacheFilesPath_ := strings.Split(*cacheFilesPath, ",")
	cacheFilesCount := len(cacheFilesPath_)
	log.Printf("Opening data files. This can take a while for the first time if files are big\n")
	if cacheFilesCount < 2 {
		if cacheFilesPath_[0] != "" {
			config.DataFile = cacheFilesPath_[0] + ".go-memcached.data"
			config.IndexFile = cacheFilesPath_[0] + ".go-memcached.index"
		}
		cache, err = config.OpenCache(true)
		if err != nil {
			log.Fatalf("Cannot open cache: [%s]", err)
		}
	} else if cacheFilesCount > 1 {
		config.MaxItemsCount /= ybc.SizeT(cacheFilesCount)
		config.DataFileSize /= ybc.SizeT(cacheFilesCount)
		var configs ybc.ClusterConfig
		configs = make([]*ybc.Config, cacheFilesCount)
		for i := 0; i < cacheFilesCount; i++ {
			cfg := config
			cfg.DataFile = cacheFilesPath_[i] + ".go-memcached.data"
			cfg.IndexFile = cacheFilesPath_[i] + ".go-memcached.index"
			configs[i] = &cfg
		}
		cache, err = configs.OpenCluster(true)
		if err != nil {
			log.Fatalf("Cannot open cache cluster: [%s]", err)
		}
	}
	defer cache.Close()
	log.Printf("Data files have been opened\n")

	s := memcache.Server{
		Cache:             cache,
		ListenAddr:        *listenAddr,
		ReadBufferSize:    *readBufferSize,
		WriteBufferSize:   *writeBufferSize,
		OSReadBufferSize:  *osReadBufferSize,
		OSWriteBufferSize: *osWriteBufferSize,
	}
	log.Printf("Starting the server")
	if err := s.Serve(); err != nil {
		log.Fatalf("Cannot serve traffic: [%s]", err)
	}
}

开发者ID:kangkot，项目名称:ybc，代码行数:65，代码来源:main.go

注：本文中的github.com/valyala/ybc/bindings/go/ybc.Cacher类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。