CN101997924A - Cloud storage file transfer protocol (CFTP) - Google Patents

Cloud storage file transfer protocol (CFTP) Download PDF

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CN101997924A
CN101997924A CN2010105531757A CN201010553175A CN101997924A CN 101997924 A CN101997924 A CN 101997924A CN 2010105531757 A CN2010105531757 A CN 2010105531757A CN 201010553175 A CN201010553175 A CN 201010553175A CN 101997924 A CN101997924 A CN 101997924A
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terminal
cloud
file
node
cloud storage
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杨文军
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杨文军
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Abstract

The invention discloses a novel cloud storage file transfer protocol (CFTP), which is a method for transferring files with a user terminal by using a cloud terminal provided with a cloud computation or storage environment, wherein after a terminal sends a file transfer request, a target file is split into a plurality of data blocks to be sent to a storage node of the cloud terminal for caching, a cloud terminal server is used for calculating out an optimum path and sending the optimum path to the terminal, and the user terminal acquires optimum download and upload speeds.

Description

云存储文件传输协议(CFTP) Cloud Storage File Transfer Protocol (CFTP)

技术领域 FIELD

[0001] 本发明涉及计算机网络领域,尤其涉及云计算、云存储系统中的文件传输。 [0001] The present invention relates to computer networks, and particularly to the cloud, the cloud storage system to transfer files. 背景技术 Background technique

[0002]云计算(Cloud Computing)是分布式计算(Distributed Computing)、并行计算(ParallelComputing)、网格计算(Grid Computing)、网络存储(Network Storage Technologies)、虚拟化(Visualization)、负载均衡(Load Balance)等传统计算机技术和网络技术发展融合的产物。 [0002] Cloud computing (Cloud Computing) is the Distributed Computing (Distributed Computing), Parallel Computing (ParallelComputing), grid computing (Grid Computing), network storage (Network Storage Technologies), virtualization (Visualization), load balancing (Load Balance) and other computer technology and network technology integration of product development tradition. 它通过网络把多个成本相对较低的计算实体整合成一个具有强大计算能力的完美系统,并借助各种应用服务把强大的计算能力分布到终端用户手中。 Over the network to a plurality of relatively low-cost computing entities perfectly integrated into a system having a powerful computing capability, and various application services by means of the computing power distribution to the end-users. 其基本原理是将计算任务通过网络分配给多台计算机执行。 The basic principle is that computing tasks are assigned to multiple computers over a network to perform. 每台计算机称为云计算网络计算节点,执行计算任务的全部计算机整体称为云端,发出任务请求的计算机或者手机等其他设备称为终端。 Each computer network known as the cloud computing node, all of the computer to perform computing tasks collectively referred cloud issuing computer or other mobile phones and other devices is called a task request terminal.

[0003] 云存储是指通过集群应用、网格技术或分布式文件系统等功能,将网络中大量各种不同类型的存储设备通过应用软件集合起来协同工作,共同对外提供数据存储和业务访问功能的一个系统。 [0003] Cloud storage is through clustering applications, grid technology and distributed file systems and other functions, the network in a large variety of different types of storage devices through the set up and application software work together to jointly provide external data storage and business access of a system. 当云计算系统运算和处理的核心是大量数据的存储和管理时,云计算系统中就需要配置大量的存储设备,那么云计算系统就转变成为一个云存储系统,所以云存储是一个以数据存储和管理为核心的云计算系统。 When the cloud core system operations and processes is a mass storage and management of data, the cloud computing system needs to configure a large number of storage devices, the cloud computing system is transformed into a cloud storage system, the cloud storage is a data storage cloud computing systems and management as the core.

[0004] 目前云计算的终端与云端的文件传输一般采用流行的FTP协议和基于TCP/IP的WEBDAV协议。 [0004] The terminal and the current cloud computing cloud generally use a file transfer protocol FTP and the popular TCP / IP based protocol of WEBDAV. FTP协议有速度快、稳定、支持断点续传等优点,缺点是缺乏对分布式存储的支持,不支持协同工作。 FTP protocol is fast, stable, support for HTTP and other advantages, disadvantages is the lack of support for distributed storage is not supported cooperative work. WEBDAV协议可支持协同工作,缺点是传输不稳定、不支持断点续传, 对超过100M的文件支持非常差。 WEBDAV protocol supported cooperative work, the disadvantage is unstable transmission, does not support HTTP, support more than 100M of files are very poor.

[0005] 国内目前网络存在不同运营商之间访问速度慢的问题,因此在传统互联网的文件传输中,还有一种经常使用的协议,点对点传输协议(P2P),该协议优点是速度非常快,支持多服务器同时下载,缺点是独占终端大量网络带宽,导致其他网络服务质量变差,所以云计算和云存储一般不采用此协议。 [0005] existing domestic network problems between different operators access speed slow, so the file transfer protocol tradition of the internet, there is a frequently used point to point transmission protocols (P2P), the advantages of the agreement is very fast, supports multi-server while downloading, the disadvantage is the exclusive terminal network bandwidth and cause other network service quality deterioration, so the cloud computing and cloud storage generally do not use this protocol.

[0006] 本云储存传输协议(CFTP)不仅结合了FTP、TCP/IP、P2P协议的优点,同时加入了云端服务器计算功能,能在快速、稳定的传输,并且支持断点续传,支持云存储设备,支持协同工作,不占用终端其他网络服务带宽。 [0006] The present cloud storage Transfer Protocol (CFTP) not only combines the advantages of FTP, TCP / IP, P2P protocols, cloud server while adding the calculation function can be rapid, stable transmission, and supports HTTP, cloud- storage devices, support collaborative work, do not take up other network terminal service bandwidth. 和P2P协议相比,本协议是利用云端的计算能力和云存储节点及其缓存机制来达到速度最优,传输能得到有效的保障,而P2P协议则利用正在下载的终端来优化速度,速度和稳定性都得不到保障。 P2P protocols and compared using this protocol is a cloud computing power and storage and caching nodes to reach the cloud optimum speed, the transmission can be effectively protected, and P2P protocols are being downloaded using a terminal to optimize speed, speed, and stability can not be guaranteed. 本协议核心工作原理是:终端发送文件传输请求后,目标文件被拆分成很多数据块发送给云端存储节点缓存,云端服务器计算出最优路径,然后发送给终端。 Protocol core of this working principle is: the terminal transmits the file transmission request, the target file is split into many data blocks to a cloud storage node caching, cloud server calculate the optimal path, and then sent to the terminal.

发明内容 SUMMARY

[0007] 使用具有云计算或者云存储环境的云端与用户终端进行文件传输的一种方法,包括计算最优路径,并在路径所包含的计算节点或者云存储节点缓存数据,使用终端获得最佳下载和上传速度。 [0007] Cloud having a cloud or cloud storage environment and the user terminals A method of file transfer is performed, including calculation of the optimal path, and calculate the shortest path contained in the data cache or a cloud storage node, using the best terminal download and upload speeds. 本协议分服务器端和终端。 This Agreement sub-server and the terminal.

[0008] 协议服务器端布署在云计算环境的云端,协议启动后,会主动检测和纪录所在云端的节点,并定时计算这些节点之间的网络速度和网络繁忙程度。 [0008] Protocol server cloud deployment in a cloud computing environment, the protocol starts, will automatically detect and record the node where the cloud, network speed and timing calculation and the network between the nodes busy.

[0009] 协议终端同时布署在终端设备和云端各节点上,在终端发出文件传输请求后,本协议会被启动,首先会测试终端之间、终端通过最优路径节点速度,计算文件大小获得两者的传送时间,如果终端之间的传输时间小于目标终端与终端通过最优路径节点的时间(比如局域网内文件传输),则直接在终端之间传输文件,无需经过云端。 [0009] Protocol terminals simultaneously deployed in the cloud on the terminal device and each node, file transfer request is issued in a terminal, this protocol will be started, will first test between terminals, the terminal velocity through the optimal path node, the file size is calculated to obtain both the transmission time, the transmission time between the terminal and the target terminal is less than the time optimal path through the terminal node (such as the LAN file transfer), the file transfer directly between terminals without going through the cloud. 如果终端之间的传输时间大于终端通过最优路径节点的传输时间,则启动云端缓存,并给文件传输加速。 If the transmission time between the time a terminal is greater than the optimal path through the transmission terminal node, the start Cloud cache, file transfer and to accelerate.

[0010] 当云端节点之间互相传输文件,则把文件源节点和目标节点试为两个终端。 [0010] When each file transfer, files put between the source node and the destination node as the cloud two terminal nodes again.

[0011] 文件传输前,首先文件源终端会通过CRC算法计算文件唯一识别码,并将识别码发送给目标终端,目标终端会在文件传输完成后再次计算唯一识别码,并核对文件是否正确。 [0011] before the file transfer, the terminal will first source file by file CRC algorithm unique identification code and the identification code to a target terminal, the target terminal calculates a unique identification code again after completion of the file transfer, and file check is correct.

[0012] 文件在传输过程中是分块传输,每个文件数据块还会拆分成更多的数据包进行传输,不同的节点和终端均可以同时下载不同的或者相同的文件数据块,而每个节点服务器的文件数据块是根据网络传输速度和网络带宽空闲状况来分配的,目标终端最终获得所有的数据块,并将所有的数据块合并成目标文件。 [0012] In the file transfer process is block transmission, each of the data block will be split into more data packets for transmission, and different nodes can be downloaded different terminals of the same file or data block, and each server node of the data block is allocated according to the network speed and bandwidth idle condition, the final target terminal to obtain all the data blocks, and the combined data block all of the object files.

[0013] 文件数据块中的第一个数据包,包含整个文件唯一识别码,分块文件数据大小,文件数据块的位置编号,上一个文件块的唯一识别码和本文件块唯一识别码,这些信息用于某个节点接收完文件数据块后合成文件缓存文件,并识别这些文件数据块是否被改动,确保文件安全。 [0013] the data block in the first packet, contains the entire unique identification code file, the file size of the data block, the location of the data block number, a unique identification code and a file block of the file blocks present unique identification code, This information is used after a finish node receives the data block composite file cache file, and identifies whether the data block has been changed, to ensure document security.

[0014] 数据包包含协议对数据包的识别信息,数据包的位置信息和加密的数据内容,接收到数据包后会将数据解密并存储到临时文件中,最终合成文件数据块。 [0014] protocol data packet comprises identification information of the packet, the position information and the encrypted content data packets, the received data packet will decrypt the data and stored in the temporary file, the final composite file data blocks.

[0015] 本协议对跨运营商的终端之间文件交换有很大的加速作用。 [0015] The present agreement document between inter-carrier terminal exchange has a great acceleration. 云端数据缓存对大量不同的终端下载同样的文件有极大的速度提升,并节省垮网流量。 Cloud data cache for a number of different terminal to download the same file have great speed improvements, and save network traffic collapse.

[0016] 附图简要说明 [0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 可参考附图更好的理解本发明结构和运行这两方面的细节,其中: [0017] may be better understood with reference to the drawings in detail both structure and operation of the present invention, wherein:

[0018] 图1是本发明云存储文件传输协议(CFTP)的用户使用示意图 [0018] FIG. 1 is a cloud storage file transfer protocol according to the present invention, a user (CFTP) using the schematic

[0019] 图2是本发明CFTP的实现流程图 [0019] FIG. 2 is a flow chart for implementing the present invention CFTP

[0020] 图3是本发明CFTP的云端传输流程图[0021 ] 图4是本发明CFTP的功能框图 [0020] FIG. 3 is a cloud transmission CFTP flowchart of the present invention [0021] FIG. 4 is a functional block diagram of the present invention CFTP

具体实施方式 Detailed ways

[0022] 首先本协议的使用对象是能够使用云存储的系统,因为没有云端的存储节点无法建立文件缓存。 [0022] the first to use the object of this agreement is the ability to use cloud storage system, because there is no cloud storage node can not establish a file cache.

[0023] 参看图1和图2,终端A和终端B可以是用户的PC电脑、智能手机或者平板电脑等其他支持存储的设备,也可是云端的某个节点,当是云端的节点时,我们把该节点试为终端。 [0023] Referring to Figures 1 and 2, the terminals A and B may be the user's PC other support computers, tablet computers, smart phones, or storage devices, may also be a node in the cloud, when the node is a cloud, we the test node to the terminal.

[0024] 假设终端A向目标文件所在的终端B发出文件传输请求,终端B首先会向云端最近同时也是相对空闲的节点发出请求(由于云存储系统的存在,所以该节点一定存在),通知云端有文件需要传送给终端A,该节点接收到请求后开始计算最优路径,并计算终端A通过最优路径接收终端B发出的文件的时间,并反馈给终端B。 [0024] The terminal B is assumed that the terminal A is located to the target document issued file transmission request, the terminal B first sends a request (by the presence of cloud storage system, so that the node must exist) to the cloud recently also relatively free node to notify the cloud there are documents to the terminal a, the node starts computing optimal path after receiving the request, the terminal a receives and calculates the time of the file through the terminal B issues an optimal path, and fed to the terminal B. 在计算最优路径传输时间的时候,云端节点会同时查找最优路径上的文件缓存,如果发现文件缓存会减去相应缓存带来的加速时间。 When calculating the optimal path transmission time, cloud node will also find the file cache on the optimal path, if you find the file cache will speed up the time minus the corresponding cache brings.

[0025] 终端B在等待云端节点反馈的同时计算终端A直接接收终端B的文件的时间,如果在终端A、B之间的传输时间小于通过最优路径的传输时间,则直接将文件传输给终端A, 否则,终端B通知云端节点采用最优路径传输。 Time of the file [0025] terminal B, terminal A is calculated directly receiving terminal B while waiting for the feedback node of the cloud, if the transmission time between terminals A, B is less than the time of transmission through the optimal path, directly to the file transfer terminal A, otherwise, the terminal B notifies the cloud transmission node using the optimal path.

[0026] 一旦启动了最优路径传输,就会利用到云端的强大计算能力和存储能力,如图3 所示,离终端B最近的计算节点会根据最优路径上所有节点的网络速度和空闲情况分配任务,该任务会发送给所有节和终端A,终端A和相关节点会同时开始下载文件。 [0026] Once the optimal path transmission start, will use the computing power and storage capacity of the cloud, shown in Figure 3, the terminal closest to the computing node B based on the optimal path and all the nodes in the network idle speed allocated task, which will be sent to all sections and terminal A, terminal A and the associated node will also start downloading the file.

[0027] 文件传送任务在开始的时候并不一定包括所有文件块。 [0027] file transfer tasks in the beginning does not necessarily include all file blocks. 当部分节点已经完成接收任务时,会自动建立文件缓存,并将结果反馈给离终端B最近的节点,该节点受到反馈后重新计算和分配任务,直至所有文件数据被传送完毕。 When some nodes receive task has been completed, the cache file will be created automatically, and the result is fed back to the closest node to terminals B, the node being recalculated feedback and assign tasks until all file data has been transmitted.

[0028] 根据终端B的实际网络使用情况,也有可能刚开始下载任务只分配给部分数据给离终端B最近的节点,当该节点完成数据块后在通过重新计算由其他节点和终端A同时从该节点接收数据。 [0028] The actual network usage of the terminal B, there may be the beginning of the download task allocated to only part of the data to the closest node to the terminal B, when the node completes data block by recalculating the same time by the other node and the terminal A from the node receives data.

[0029] 如果在整个文件传送过程中负责分配任务的节点出现故障,其他节点会自动接替该节点分配任务。 [0029] If the node is responsible for allocating tasks in the entire file transfer process fails, the other node will automatically take over the node assigned tasks.

[0030] 图4是本协议的功能框图,本协议首先会监听某个计算机设备端口,当有符合本协议的数据包到达后开始处理,数据包包含了协议命令,主要分为图4所示的六种功能。 [0030] FIG. 4 is a functional block diagram of the protocol, this protocol will listen on a first computer device port, when a packet arrives with a protocol consistent with the present process starts, the packet contains protocol commands, divided into 4 shown in FIG. the six functions.

[0031] 计算命令:上文中所说的终端B发送文件传送请求就属于计算命令,终端B会要求节点计算出最优路径,分配传输任务。 [0031] calculation command: above said terminal B sends a file transfer request belongs calculation command, the terminal B requesting node will calculate the optimal path, the allocation of transmission tasks. 而在其他节点则会接收到任务分配节点发出的命令而开始执行任务。 In other node receives the command will be sent by the task distribution node and start the task.

[0032] 寻找缓存:寻找缓存的命令中会包含目标文件的唯一识别码,通过该识别码本节点来判断是否有缓存,如果有会反馈,反馈信息包括是否存在,缓存文件在目标文件中的位置以及缓存文件的识别码。 [0032] Looking buffer: Find the buffered command contains the unique identification code of the target file, through the identification code of the local node to determine whether the cache, if there will be feedback, the feedback information including the existence, the cache file in the target document identification code and the location of the cache file.

[0033] 接收缓存:这个命令要求本节点从某个节点或者终端上接收文件数据,本节点会首先接收识别信息,并判别数据是否有效,然后开始接收数据,当指定数据接收完成后,会合并成文件缓存,并将相关信息反馈给最优路径上的其他节点。 [0033] The reception buffer: This command is required node receives data from a document or a terminal node, the first node receives the identification information, and determines whether the data is valid, and then begins to receive data, when the specified data reception is completed, merged to file caching, and feedback information to other nodes on the optimal path.

[0034] 发送缓存:这个命令要求本节点向其他节点发送缓存数据,同样为了文件的安全性,首先会发送目标文件和缓存文件的相关信息给其他节点,在确认数据正确后开始发送数据,发送完成后反馈给分配任务的节点。 [0034] transmit buffer: This command requests this node sends the cached data to other nodes, also for security documents, will first send the relevant information of the target file and cache files to other nodes begin to transmit data after confirming the data correctly, send after the node is assigned the task to complete feedback.

[0035] 节点变化:本命令是无论在是否有数据任务的时候都会定时执行的,主要是为了记录所有离本节点较近的节点及本节点到这些节点的速度,包括新增加的和被移除的,这样可以最快的计算出最优路径,在每一次监测后更新数据。 [0035] The node changes: mainly to the recording of all the nodes from the present node and the present node close to the speed command to the nodes, whether the present time whether there is data in the task execution timings are, including the newly added are shifted and in addition, this can calculate the optimal quickest route data is updated after each monitoring.

[0036] 终端测速:这个命令是由有文件传输任务的终端发出的,以此获得离终端最近的节点。 [0036] terminal speed: This command is issued by the terminal there are file transfer tasks, in order to obtain the closest node to the terminal.

Claims (3)

  1. 一种云存储环境下的文件传输方法,包括利用云存储设备进行文件拆分缓存,计算节点计算最优路径,并使之达到最快传输速度。 File transfer method in a cloud storage environment, including using a cloud storage buffer split file, calculate the optimal path node calculation, and the fastest transmission speed.
  2. 2.如权利要求1所述的方法,其中每个云存储节点和目标文件所在终端都可以同时向其他云存储节点和请求文件所在的终端发送文件数据,并可以合成为缓存文件。 2. The method according to claim 1, wherein each cloud storage node and a target file is located to other terminals may simultaneously transmit cloud storage nodes and file data file requesting terminal is located, and may be synthesized as a cache file.
  3. 3.如权利要求1所述的方法,由离目标文件所在终端最近的云端节点计算和分配任务,如果在任务实施过程中该节点出现故障,会被其他节点代替。 The method of claim 1 if the task fails in the embodiment of the process node, the other nodes will be replaced as claimed in claim 3, the target file is located away from the nearest terminal node calculation and assign tasks to the cloud.
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