WO2015085764A1

WO2015085764A1 - Method of file access and cloud gateway

Info

Publication number: WO2015085764A1
Application number: PCT/CN2014/081978
Authority: WO
Inventors: 施大年; 徐晓旸
Original assignee: 华为技术有限公司
Priority date: 2013-12-12
Filing date: 2014-07-10
Publication date: 2015-06-18
Also published as: CN104717254A; CN104717254B

Abstract

Provided are a method of file access and a cloud gateway. The method comprises: a cloud gateway receiving a first file access command sent by a client, wherein the first file access command comprises a file identifier of a target file; based on the first file access command, the cloud gateway downloading additional information of the target file from a cloud server, and sending the additional information of the target file to the client; and if the cloud gateway receives a second file access command sent by the client, the cloud gateway downloading file content of the target file from the cloud server based on the second file access command, and sending the file content of the target file to the client, thus reducing a waste of network bandwidth resources and a cloud gateway buffer, and improving feedback efficiency to the client.

Description

Method for accessing files and cloud gateway This application claims priority to Chinese Patent Application No. 201310687488. 5, entitled "File Access Method and Cloud Gateway", which is filed on December 12, 2013. The entire contents are incorporated herein by reference.

The present invention relates to a cloud computing technology, and in particular, to a file access method and a cloud gateway. BACKGROUND In the cloud storage technology, a cloud storage gateway, also called a cloud gateway, introduces technology, so that users do not need to change the interface design, and use the original access method, for example, a network file system (FS) or a universal Internet system. The Common Internet File System (CIFS) can access cloud services provided by cloud service providers. Usually, the cloud gateway needs to specify a database built-in or externally to save the directory structure and record file attributes such as file size, creator, creation/modification time, etc., and where the file is stored in the cloud server.

Currently, when a user performs an open directory operation on the cloud gateway through the client, if the corresponding file is not stored on the cloud gateway, the cloud gateway downloads the complete file from the cloud server, and basic information of the file, for example: file size, creation , creation/modification time, and other additional information, such as: "artist", "album", "title", etc. are sent to the client, but in reality the user does not necessarily access the file that the cloud gateway will download from the cloud server. As a result, the network bandwidth resources are wasted, and even the feedback delay to the client is caused. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method for accessing a cloud gateway file and a cloud gateway, so as to reduce network bandwidth resources and cloud gateway cache waste, and improve feedback efficiency to the client.

A first aspect of the present invention provides a method for accessing a file in a cloud gateway, including:

Receiving, by the cloud gateway, a first file access command sent by the client, where the first file access command includes a file identifier of the target file;

The cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file to the client; If the cloud gateway receives the second file access command sent by the client, the second file access command includes a file identifier of the target file, and the second file access command is used to obtain the file of the target file. And the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and sends the file content of the target file to the client.

In a first possible implementation manner of the first aspect, before the cloud gateway receives the first file access command sent by the client, the method further includes:

The cloud gateway acquires two parts of the additional information and the file content of the target file according to the file type of the target file;

The cloud gateway allocates a first storage location to the additional information in the cloud server, and allocates a second storage location to the file content in the cloud server;

Recording, in a block record table of the cloud gateway, a file identifier of the target file, an identifier of the additional information, the first storage location, an identifier of the file content, and the second storage location;

The cloud gateway stores the additional information in the cloud server according to the first storage location, and stores the file content in the cloud server according to the second storage location.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the cloud gateway downloads the addition of the target file from the cloud server according to the first file access command. And sending the additional information of the target file to the client, specifically:

The cloud gateway queries the block record table according to the file identifier of the target file, and obtains the first storage location of the additional information;

The cloud gateway downloads the additional information according to the first storage location, and sends the additional information to the client in combination with the first or second possible implementation manner of the first aspect, in the third aspect of the first aspect In a possible implementation, the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and sends the file content of the target file to the client, which specifically includes:

The cloud gateway queries the block record table according to the identifier of the target file, and obtains the second storage location of the file content;

The cloud gateway downloads the file content according to the second storage location, and sends the file content to the client in combination with the second possible implementation manner of the first aspect, the fourth possible implementation in the first aspect In the mode, the additional information includes a plurality of sub-information, and the first storage location includes a corresponding to each of the plurality of sub-information a starting position and a size; the block record table further includes a priority corresponding to each sub-information; and the downloading, by the cloud gateway, the additional information according to the first storage location includes:

The plurality of sub-information are sequentially downloaded according to the priority, the starting position, and the size corresponding to each sub-information, to obtain the additional information.

A second aspect of the present invention provides a cloud gateway, including:

a receiving module, configured to receive a first file access command sent by the client, where the first file access command includes a file identifier of the target file;

a first processing module, configured to download, according to the first file access command, additional information of the target file from a cloud server, and send the additional information of the target file to the client;

a second processing module, configured to: when receiving the second file access command sent by the client, the second file access command includes a file identifier of the target file, where the second file access command is used to obtain the target The file content of the file is downloaded from the cloud server according to the second file access command, and the file content of the target file is sent to the client.

In a first possible implementation manner of the second aspect, the file storage module is further configured to:

Obtaining additional information and file content of the target file according to the file type of the target file;

Allocating, by the cloud server, the first storage location for the additional information, and assigning, by the cloud server, a second storage location to the file content;

Recording, in the block record table, a file identifier of the target file, an identifier of the additional information, and the first storage location, and an identifier of the file content and the second storage location;

The additional information is stored in the cloud server according to the first storage location, and the file content is stored in the cloud server according to the second storage location.

In conjunction with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the first processing module is specifically configured to:

Querying the block record table according to the file identifier of the target file to obtain the first storage location of the additional information;

Downloading the additional information according to the first storage location, and transmitting the additional information to the client.

In conjunction with the first or second possible implementation of the second aspect, in a third possible implementation of the second aspect, the second processing module is specifically configured to:

Querying the block record table according to the identifier of the target file, and obtaining the second storage location of the file content; Downloading the file content according to the second storage location, and transmitting the file content to the client.

With reference to the second possible implementation of the second aspect, in a fourth possible implementation manner of the second aspect, the additional information includes multiple sub-informations, where the first storage location is included in the multiple sub-information a starting position and a size corresponding to each sub-information; wherein the block record table further includes a priority corresponding to each sub-information;

The first processing module is specifically configured to sequentially download the plurality of sub-information according to a priority, a starting position, and a size corresponding to each sub-information to obtain the additional information.

The file access method and the cloud gateway provided by the embodiment of the present invention, when the client accesses the target file, the additional information of the cloud gateway download target file is returned to the client, and if the client further needs to obtain the content of the target file, the cloud gateway The file content of the download target file is returned to the client, which reduces network bandwidth resources and cloud gateway cache waste, and improves feedback efficiency to the client. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

FIG. 1 is a flowchart of a file access method according to an embodiment of the present invention;

2 is an information interaction diagram of a file access method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an MP3 file encapsulation format according to an embodiment of the present invention;

4 is a schematic structural diagram of a cloud gateway according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a router according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of a method for accessing a file according to an embodiment of the present invention. As shown in FIG. 1 , the method may include: S101. A cloud gateway receives a first file access command sent by a client, where the first file access command is used. Including the file identifier of the target file; The first file access command includes at least a file identifier of the target file, where the file identifier may be a file name or a file icon. The first file access command is a command for the client to access file additional information, for example, the client clicks an access command issued by a file link on the Internet.

The cloud gateway may be a network device such as a switch or a router.

S102. The cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file to the client.

The cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file to the client.

The additional information may include: description information of the entire file, statistical information, icons, and the like.

S103. If the cloud gateway receives the second file access command sent by the client, the second file access command includes a file identifier of the target file, where the second file access command is used to obtain the target file. And the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and sends the file content of the target file to the client.

The second file access command is an instruction for the client to access the file content of the target file.

If the cloud gateway receives the second file access command sent by the client, indicating that the client needs to obtain the file content of the target file, the cloud gateway downloads the file content of the target file from the cloud server and sends the file content to the client. If the cloud gateway does not receive the second file access command sent by the client, it is not necessary to download the file content of the target file from the cloud server.

The file content of the target file may include a file data portion, such as: a data frame of the music file, a document content of the text file, a bitmap content of the image file, and the like.

Optionally, in order to facilitate the cloud gateway to download additional information and file content of the target file from the cloud server, the additional information and the file content may be separately stored. The cloud gateway may allocate a first storage location for the additional information in advance, and allocate a second storage location for the file content. In the storage process, the cloud gateway stores the additional information of the target file in the first storage in the cloud server. The location stores the file content of the target file in a second storage location in the cloud server, so that the cloud gateway downloads the required data from the corresponding storage area of the cloud server as needed.

Optionally, the additional information of the target file stored in the first storage location may include a plurality of sub-information, where the sub-information may be continuously stored in the cloud server, or may be distributed and stored.

The cloud gateway further includes a block record table, which may include information such as a file identifier storage area attribute, a data storage location, a start location, and a size, and the cloud gateway may access the server by searching the block record table to obtain a corresponding storage location. Download attachment information or file content. Wherein, if the additional information includes a plurality of sub-information, the first storage location a start location and a size corresponding to each of the plurality of sub-informations; the block record table further includes a priority corresponding to each sub-information; the cloud gateway according to a priority corresponding to each sub-information, The starting position and size, and the plurality of sub-information are sequentially downloaded to obtain the additional information.

In the file access method provided by the embodiment of the present invention, when the client accesses the target file, the cloud gateway first downloads the additional information of the target file and returns the information to the client, and only downloads the target file when the client further requests to obtain the file content of the target file. The content of the file is returned to the client, which can reduce the waste of network bandwidth resources and cloud gateway cache, and improve the feedback efficiency to the client.

2 is an information interaction diagram of a file access method according to an embodiment of the present invention. The specific processes of the client, the cloud gateway, and the cloud server are:

S201. The cloud gateway receives a first file access command sent by the client, where the first file access command includes a file identifier of the target file.

Before the cloud gateway receives the first access command sent by a client, it also needs to store the target file on the cloud server through other clients. The specific file storage process is as follows:

S201 K, the cloud gateway acquires the additional information of the target file and the content of the file according to the file type of the target file;

52012, the cloud gateway allocates a first storage location for the additional information in the cloud server, and allocates a second storage location to the file content in the cloud server;

52013, the cloud gateway records, in a block record table, a file identifier of the target file, an identifier of the additional information, and a first storage location, and an identifier of the file content and a second storage location; When the target file specifies a part, the storage location is accurately found.

52014. The cloud gateway stores the additional information in the cloud server according to the first storage location, and stores the file content in the cloud server according to the second storage location.

The additional information portion of the object file may contain a plurality of sub-information.

The example of the file format of the MP3 file provided by the embodiment of the present invention is as shown in FIG. 3 is a file format of the MP3 file, which includes the file content. (usually represented by Frame), additional information 1 (usually represented by ID3V1), additional information 2 (usually denoted by ID3V2), wherein the additional information 1 and the additional information 2 together constitute an additional information part of the MP3 file. Information about songs, such as song names, singers, etc., is recorded in ID3V1 and ID3V2.

In some cases, the MP3 file may not have the ID3V2. In the embodiment of the present invention, the MP3 file includes the ID3V2 as an example to illustrate the technical solution of the present invention, and is not intended to limit the present invention. As shown in FIG. 3, the additional information ID3V1 and ID3V2 of the MP3 file are stored in the first storage location of the cloud server, and the file content Frame is stored in the second storage location of the cloud server.

The client accesses the MP3 file as an example to describe the specific process of the file access method provided by the embodiment. The client sends the first file access command to the cloud gateway, where the file identifier of the MP3 file is included.

S202. The cloud gateway queries the block record table according to the file identifier of the target file according to the first file access command, and obtains the first storage location of the additional information.

The cloud gateway queries, according to the file identifier of the target file carried in the received first access command, the additional information of the MP3 file in the block record table, that is, the first storage location of ID3V1 and ID3V2, because the additional information part of the MP3 file includes two In addition, it is also necessary to query the priority of ID3V1 and ID3V2 of the sub-information and the like.

S203. The cloud gateway downloads the additional information according to the first storage location.

Specifically, the cloud gateway downloads the additional information from the first storage location of the cloud server according to the first storage location in the block record table, for example, may be obtained by means of a breakpoint download.

In addition, the additional information part of the MP3 file is two sub-informations of D3V1 and ID3V2, and the cloud gateway may sequentially download the plurality of sub-information according to the priority, the starting position and the size of each sub-information to obtain the additional information. The amount of sub-information for specific additional information is variable, and the download method can be determined according to the actual situation.

S204: The cloud gateway sends the downloaded additional information of the target file to the client.

The cloud gateway returns the additional information of the MP3 file downloaded from the first storage location to the client, so that the client accesses the additional information of the MP3 file, and selects whether to obtain the file content portion of the MP3 file.

5205. The second file access command sent by the client, where the second file access command includes a file identifier of the target file, where the second file access command is used to obtain the file content of the target file.

The client receives the additional information of the MP3 file returned by the cloud gateway. By reading the additional information, if the content of the MP3 file needs to be obtained, the client sends a second file access command to the cloud gateway to obtain the file content of the MP3 file. The file identifier of the MP3 file is included in the second file access command.

5206. The cloud gateway queries the block record table according to the identifier of the target file, and obtains the second storage location of the file content.

The cloud gateway queries the file content of the MP3 file in the block record table, that is, the second storage location of the Frame portion, according to the second file access command.

S207. The cloud gateway downloads the file content according to the second storage location.

The cloud gateway downloads the file content portion from the cloud server according to the second storage location of the stored file content in the block record table, that is, downloads the file content portion of the MP3 file. The specific downloading method is not limited in the present invention. S208. The cloud gateway sends the downloaded file content of the target file to the client.

The cloud gateway returns the file content of the MP3 file downloaded from the second storage location to the client, so that the client accesses the file content of the MP3 file.

In this embodiment, the first storage location stores additional information of the target file, including overall description information, statistical information, icons, and the like, and the additional information may be multiple sub-information, and the sub-information is not necessarily in the target file. It is continuous, and the storage location is not necessarily continuous. The second storage location stores the file content of the target file.

In the cloud gateway file access method provided by the embodiment of the present invention, the cloud gateway stores the additional information and the file content part of the target file in the first storage location and the second storage location of the cloud server, respectively, so that the client accesses the target file. The additional information of the cloud gateway download target file is returned to the client, and only when the client further requests to obtain the file content of the target file, the file content of the download target file is returned to the client, which can reduce the network bandwidth resource and the cloud gateway cache. Waste, improve feedback efficiency on the client.

FIG. 4 is a schematic structural diagram of a cloud gateway according to an embodiment of the present invention, for implementing the method shown in any of FIG. 1 and FIG. 2 of the present invention. The cloud gateway shown in Figure 4 includes:

The receiving module 41 is configured to receive a first file access command sent by the client, where the first file access command includes a file identifier of the target file;

The first processing module 42 is configured to download, according to the first file access command, additional information of the target file from a cloud server, and send the additional information of the target file to the client;

The second processing module 43 is configured to: if the receiving module 41 receives the second file access command sent by the client, where the second file access command includes a file identifier of the target file, where the second file access command is used Obtaining the file content of the target file, downloading the file content of the target file from the cloud server according to the second file access command, and sending the file content of the target file to the client.

Further, the cloud gateway further includes a file storage module 44, configured to:

Further, the first processing module 42 is specifically configured to: Querying the block record table according to the identifier of the target file, obtaining the first storage location of the additional information;

Further, the second processing module 43 is specifically configured to:

Querying the block record table according to the identifier of the target file to obtain the second storage location of the file content;

Downloading the file content according to the second storage location, and transmitting the file content to the client.

Further, the additional information includes a plurality of sub-information, where the first storage location includes a starting location and a size corresponding to each of the plurality of sub-informments; and the block record table further includes each sub-information Corresponding priority

The first processing module 42 is specifically configured to download the multiple pieces of sub-information according to the priority, the starting position, and the size corresponding to each sub-information to obtain the additional information.

The cloud gateway provided by this embodiment corresponds to the method embodiment provided by FIG. 1 of the present invention. The specific execution process refers to FIG. 2, and the cloud gateway stores the additional information of the target file and the file content part in the first storage of the cloud server. The location and the second storage location, when the client accesses the target file, the additional information of the cloud gateway download target file is returned to the client, and only when the client further requests to obtain the file content of the target file, the file content of the downloaded target file is returned to The client can reduce the waste of network bandwidth resources and cloud gateway cache, and improve the feedback efficiency to the client.

FIG. 5 is a schematic structural diagram of a cloud gateway according to an embodiment of the present invention. As shown in FIG. 5, the cloud gateway includes: a processor 51, a memory 52, and at least one communication interface 53.

The processor 51, the memory 52, and the communication interface 53 are connected to each other by a bus or the like; for example, the connection through the bus 54 is taken as an example.

The bus 54 can be divided into an address bus, a data bus, a control bus, and the like. The bus 54 can be an Aeripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. For ease of representation, only thick black lines are used in Figure 5, but it does not mean that there is only one bus or one type of bus.

The memory 52 is configured to store computer program instructions. The memory 52 may include a high speed random access memory (RAM) memory, and may also include a non-volatile memory (NVRAM), such as a disk memory.

The communication interface 53 is for communicating with the client; and is also for communicating with the cloud server.

The processor 51 is configured to invoke the computer program instructions stored in the memory 52 to implement the text provided by the embodiment of the present invention. Access methods, including:

The cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file to the client;

If the cloud gateway receives the second file access command sent by the client, the second file access command includes a file identifier of the target file, and the second file access command is used to obtain the file of the target file. And the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and sends the file content of the target file to the client.

Further, before the cloud gateway receives the first file access command sent by the client, the method further includes: the cloud gateway acquiring the additional information and the file content of the target file according to the file type of the target file. section;

Further, the cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file to the client, which specifically includes:

The cloud gateway downloads the additional information according to the first storage location, and sends the additional information to the client. The cloud gateway downloads the target file from the cloud server according to the second file access command. And sending the file content of the target file to the client, specifically:

The cloud gateway downloads the file content according to the second storage location, and sends the file content to the client. Further, the additional information includes a plurality of sub-information, the first storage location includes a starting location and a size corresponding to each of the plurality of sub-informations; and the block record table further includes a sub-information corresponding to each sub-information. Priority

The downloading, by the cloud gateway, the additional information according to the first storage location includes:

The processor 51 may be a general-purpose processor, including a central processing unit (CPU), a network processor (P), etc., or a digital signal processor (DSP). ), Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

One of ordinary skill in the art will appreciate that all or part of the steps of implementing the various method embodiments described above may be accomplished by the associated instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium such as a ROM, a RAM, a magnetic disk, or an optical disk that can store program codes.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Rights request

1. A file access method, characterized by including:

The cloud gateway receives the first file access command sent by the client, where the first file access command includes the file identifier of the target file;

If the cloud gateway receives the second file access command sent by the client, the second file access command includes the file identification of the target file, and the second file access command is used to obtain the target file. the file content of the target file, the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and sends the file content of the target file to the client.

2. The method according to claim 1, characterized in that before the cloud gateway receives the first file access command sent by the client, it further includes:

The cloud gateway obtains the additional information and file content of the target file according to the file type of the target file;

The cloud gateway allocates a first storage location for the additional information on the cloud server, and allocates a second storage location for the file content on the cloud server;

Record the file identifier of the target file, the identifier of the additional information and the first storage location, the identifier of the file content and the second storage location in the block record table of the cloud gateway;

3. The method according to claim 2, characterized in that, the cloud gateway downloads the additional information of the target file from the cloud server according to the first file access command, and sends the additional information of the target file. To the client, specifically include:

The cloud gateway queries the block record table according to the file identifier of the target file to obtain the first storage location of the additional information;

The cloud gateway downloads the additional information according to the first storage location and sends the additional information to the customer

4. The method according to claim 2 or 3, characterized in that, the cloud gateway downloads the file content of the target file from the cloud server according to the second file access command, and transfers the file content of the target file to Sent to the client, specifically including: The cloud gateway queries the block record table according to the identification of the target file to obtain the second storage location of the file content;

The cloud gateway downloads the file content according to the second storage location and sends the file content to the customer

5. The method according to claim 3, wherein the additional information includes a plurality of sub-information, and the first storage location includes a starting position and size corresponding to each sub-information in the plurality of sub-information; The block record table also includes the priority corresponding to each sub-information;

The cloud gateway downloading the additional information according to the first storage location includes:

According to the priority, starting position and size corresponding to each sub-information, the multiple sub-information is downloaded in sequence to obtain the additional information.

6. A cloud gateway, characterized by including:

A receiving module, configured to receive a first file access command sent by the client, where the first file access command includes the file identifier of the target file;

The first processing module is configured to download the additional information of the target file from the cloud server according to the first file access command, and send the additional information of the target file to the client;

The second processing module is configured to receive a second file access command sent by the client. The second file access command includes the file identifier of the target file. The second file access command is used to obtain the target file. The file content of the file is downloaded from the cloud server according to the second file access command, and the file content of the target file is sent to the client.

7. The cloud gateway according to claim 6, further comprising a file storage module configured to: obtain the additional information and file content of the target file according to the file type of the target file;

Allocate a first storage location for the additional information on the cloud server, and allocate a second storage location for the file content on the cloud server;

Record the file identifier of the target file, the identifier of the additional information and the first storage location, as well as the identifier of the file content and the second storage location in the block record table;

8. The cloud gateway according to claim 7, wherein the first processing module is specifically configured to: query the block record table according to the file identifier of the target file, and obtain the additional information of the first storage location; Download the additional information according to the first storage location, and send the additional information to the client.

9. The cloud gateway according to claim 7 or 8, characterized in that the second processing module is specifically configured to: query the block record table according to the identification of the target file, and obtain all the contents of the file. The second storage location;

Download the file content according to the second storage location, and send the file content to the client.

10. The cloud gateway according to claim 8, wherein the additional information includes a plurality of sub-information, and the first storage location includes a starting position and size corresponding to each sub-information in the plurality of sub-information; Then the block record table also includes the priority corresponding to each sub-information;

The first processing module is specifically configured to sequentially download the plurality of sub-information according to the priority, starting position and size corresponding to each sub-information, and obtain the additional information.