示例#1
0
func (client *Client) store(cmd string, item *Item) error {
	client.lock()
	defer client.unlock()

	key := client.addPrefix(item.Key)

	cKey := C.CString(key)
	defer C.free(unsafe.Pointer(cKey))
	cKeyLen := C.size_t(len(key))
	cFlags := C.flags_t(item.Flags)
	cExptime := C.exptime_t(item.Expiration)
	cNoreply := C.bool(client.noreply)
	cValue := C.CString(string(item.Value))
	defer C.free(unsafe.Pointer(cValue))
	cValueSize := C.size_t(len(item.Value))

	var rst **C.message_result_t
	var n C.size_t

	var errCode C.int

	switch cmd {
	case "set":
		errCode = C.client_set(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "add":
		errCode = C.client_add(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "replace":
		errCode = C.client_replace(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "prepend":
		errCode = C.client_prepend(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "append":
		errCode = C.client_append(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "cas":
		cCasUnique := C.cas_unique_t(item.casid)
		errCode = C.client_cas(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, &cCasUnique,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	}
	defer C.client_destroy_message_result(client._imp)

	if errCode == 0 {
		if client.noreply {
			return nil
		} else if int(n) == 1 {
			switch (*rst).type_ {
			case C.MSG_STORED:
				return nil
			case C.MSG_NOT_STORED:
				return ErrNotStored
			case C.MSG_EXISTS:
				return ErrCASConflict
			case C.MSG_NOT_FOUND:
				return ErrCacheMiss
			}
		}
	} else if errCode == C.RET_INVALID_KEY_ERR {
		return ErrMalformedKey
	}

	return networkError(errorMessage[errCode])
}
示例#2
0
文件: golibmc.go 项目: ht101996/libmc
func (client *Client) store(cmd string, item *Item) error {
	client.lock()
	defer client.unlock()

	key := client.addPrefix(item.Key)

	cKey := C.CString(key)
	defer C.free(unsafe.Pointer(cKey))
	cKeyLen := C.size_t(len(key))
	cFlags := C.flags_t(item.Flags)
	cExptime := C.exptime_t(item.Expiration)
	cNoreply := C.bool(client.noreply)
	cValue := C.CString(string(item.Value))
	defer C.free(unsafe.Pointer(cValue))
	cValueSize := C.size_t(len(item.Value))

	var rst **C.message_result_t
	var n C.size_t

	var errCode C.int

	switch cmd {
	case "set":
		errCode = C.client_set(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "add":
		errCode = C.client_add(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "replace":
		errCode = C.client_replace(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "prepend":
		errCode = C.client_prepend(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "append":
		errCode = C.client_append(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, nil,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	case "cas":
		cCasUnique := C.cas_unique_t(item.casid)
		errCode = C.client_cas(
			client._imp, &cKey, &cKeyLen, &cFlags, cExptime, &cCasUnique,
			cNoreply, &cValue, &cValueSize, 1, &rst, &n,
		)
	}
	defer C.client_destroy_message_result(client._imp)

	if errCode == 0 {
		if client.noreply {
			return nil
		} else if int(n) == 1 && (*rst).type_ == C.MSG_STORED {
			return nil
		}
	}

	return errors.New(errorMessage[errCode])
}