CN104572964A - A method and device for decompressing compressed files - Google Patents

Abstract

Embodiments of the present invention provide a method and device for decompressing compressed files, the method comprising: receiving a client's decompression request for a compressed file; requesting the compressed file from a file cluster according to the decompression request; When decompressing the compressed file, the decompressed data of the compressed file is sent to the client. The embodiment of the present invention realizes real-time and streaming decompression, and the required file can be obtained without waiting for the entire compressed file to be downloaded, which improves the convenience of operation and supports online operation of the compressed file.

Description

A method and device for decompressing compressed files

technical field

The invention relates to the technical field of computers, in particular to a method for decompressing compressed files and a device for decompressing compressed files.

Background technique

With the development of network technology, especially cloud technology, network applications have widely entered all aspects of people's lives.

People are used to storing files in network storage tools, such as cloud disk, which is also a product of Internet cloud technology, which provides enterprises and individuals with services such as file storage, reading, and downloading through the Internet.

For traditional physical disks, it is more convenient, and users do not need to carry physical disks for storing important data with them. But it is also possible to easily read the files stored by oneself from the network storage tool through the Internet, so the network storage tool is widely popular.

If the user stores a compressed file in the network storage tool, it is generally necessary to download the entire file to the local, and then decompress it before taking out the required file. The operation is troublesome. This problem occurs when the compressed file is large (such as 10G) The situation is particularly prominent, and this decompression method cannot support some online operations.

Contents of the invention

In view of the above problems, the present invention is proposed to provide a compressed file decompression method and a corresponding compressed file decompression device that overcome the above problems or at least partially solve the above problems.

According to one aspect of the present invention, a method for decompressing compressed files is provided, including:

Receive the client's decompression request for the compressed file;

requesting the compressed file from a file cluster according to the decompression request; and

When decompressing the compressed file, the decompressed data of the compressed file is sent to the client.

Optionally, the step of receiving the client's decompression request for the compressed file includes:

Receive the client's decompression request for compressed files forwarded by load balancing.

Optionally, the step of requesting the compressed file from the file cluster according to the decompression request includes:

extracting the file identifier of the compressed file from the download request; and

A compressed file corresponding to the file identifier is requested from the file cluster.

Optionally, when the decompression operation is performed on the compressed file, the step of sending the decompressed data of the compressed file to the client includes:

performing a decompression operation on the compressed file to obtain at least some data of the file; and

Send at least part of the currently decompressed data to the client until the decompression is complete.

Optionally, the step of decompressing the compressed file to obtain at least part of the data of the file includes:

detecting the file type of the compressed file; and

Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file.

Optionally, the step of sending at least part of the currently decompressed data to the client until the decompression is completed includes:

performing a video transcoding operation on at least a portion of the currently decompressed data; and

At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed.

Optionally, one or more compressed data blocks of the compressed file are stored in the file cluster, and each compressed data block is associated with the file identifier.

According to another aspect of the present invention, a device for decompressing compressed files is provided, including:

The request receiving module is suitable for receiving the decompression request of the client for the compressed file;

a compressed file request module, adapted to request the compressed file from a file cluster according to the decompression request; and

The file decompression module is adapted to send the decompressed data of the compressed file to the client when decompressing the compressed file.

Optionally, the request receiving module is also adapted to:

Receive the client's decompression request for compressed files forwarded by load balancing.

Optionally, the compressed file request module is also suitable for:

extracting the file identifier of the compressed file from the download request; and

A compressed file corresponding to the file identifier is requested from the file cluster.

Optionally, the file decompression module is also suitable for:

performing a decompression operation on the compressed file to obtain at least some data of the file; and

Send at least part of the currently decompressed data to the client until the decompression is complete.

Optionally, the file decompression module is also suitable for:

detecting the file type of the compressed file; and

Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file.

Optionally, the file decompression module is also suitable for:

performing a video transcoding operation on at least a portion of the currently decompressed data; and

At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed.

Optionally, one or more compressed data blocks of the compressed file are stored in the file cluster, and each compressed data block is associated with the file identifier.

For the decompression request of the compressed file, the embodiment of the present invention requests the compressed file from the file cluster, sends the decompressed data to the client while decompressing the compressed file, and realizes real-time, streaming decompression Compression, there is no need to wait for the entire compressed file to be downloaded to obtain the desired file, which improves the ease of operation and supports online operation of compressed files.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same parts. In the attached picture:

Fig. 1 shows a schematic flow chart of steps of an embodiment of a method for decompressing a compressed file according to an embodiment of the present invention; and

Fig. 2 shows a schematic structural diagram of an embodiment of an apparatus for decompressing compressed files according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

Referring to FIG. 1 , it shows an example diagram of the steps of a method for decompressing a compressed file according to an embodiment of the present invention, which may specifically include the following steps:

Step 101, receiving the decompression request from the client for the compressed file;

In a specific implementation, a user can access a server (such as a server cluster of a network storage tool) from any electronic device, such as a mobile phone, a PDA (Personal Digital Assistant, a personal digital assistant), a laptop computer, a computer, etc., the present invention The embodiments do not limit this.

These electronic devices can support operating systems including Android (Android), IOS, WindowsPhone or windows, etc., and can usually run a client accessing the network. The client can be an independent application program or a non-independent application program, such as The browser and the like are not limited in this embodiment of the present invention.

Usually, in order to save storage space and other requirements, the user compresses one or more files, generates a compressed file, and uploads it to the network storage tool.

Simply put, a compressed file can refer to a file that has been compressed. The principle of compression is generally to compress the binary code of the file and reduce the adjacent 0 and 1 codes. For example, if there is 000000, it can be written as six 0s. 60, to reduce the space of the file.

According to different compression operations (such as compression algorithms), compressed files can include RAR, ZIP, ARJ, CAB, LZH, ACE, TAR, GZ, UUE, BZ2, JAR, ISO and other types of decompressed files.

When the user needs one or more files in the compressed file, he can trigger a download request of the compressed file by clicking a specified control, clicking on the compressed file, etc. in the client.

For example, the client can display the compressed file in the UI (User Interface, user interface), and provide a download control near the compressed file. When the user clicks the download control, a download request for the compressed file can be triggered.

The download request may refer to an instruction to download a file in a certain compressed file, and the download request may include a file identifier of the compressed file.

Wherein, the file identifier may be information that can represent a uniquely determined compressed file, such as Hash (hash) value, MD5 (Message Digest Algorithm, message digest algorithm fifth edition) value and the like.

In an optional embodiment of the present invention, step 101 may include the following substeps:

Sub-step S11, receiving the client's decompression request for the compressed file forwarded by load balancing.

When storing a large number of files, server clusters can be deployed to apply possible large-scale client access.

In the embodiment of the present invention, the client download request can be allocated to the servers of the server cluster through load balancing (Load Balance), so that the load balance can evenly share the load, so as to avoid the downtime caused by the high load of a certain server, and the failure of a certain server Situations where the server is idle.

Step 102, requesting the compressed file from the file cluster according to the decompression request;

In practical applications, the file cluster may be a cluster device that stores files (including compressed files) uploaded by users.

One or more compressed data blocks of the compressed file may be stored in the file cluster, and each compressed data block is associated with the file identifier.

For example, the file identifier can be set as Key (key), and one or more compressed data can be set as Value (value), Key (key) and each Value (value) can form a Key/Value (key-value pair), Stored in the file cluster.

In an optional embodiment of the present invention, step 102 may include the following substeps:

Sub-step S21, extracting the file identifier of the compressed file from the download request; and

Sub-step S22, requesting the compressed file corresponding to the file identifier from the file cluster.

In practical applications, when the file cluster receives a request for a compressed file, it can return the data of the corresponding compressed file.

Specifically, the Key matching the file identifier can be found, and the Value associated with the Key can be returned to the server.

Step 103, when decompressing the compressed file, sending the decompressed data of the compressed file to the client;

The embodiment of the present invention provides real-time, streaming online decompression, which can send the decompressed data to the client while decompressing the compressed file while the decompression has not been completed.

In an optional embodiment of the present invention, step 103 may include the following substeps:

Sub-step S31, decompressing the compressed file to obtain at least part of the data of the file;

The server may decompress at least part of the data of the requested compressed file, and decompress the desired file therefrom.

In an optional embodiment of the present invention, substep S31 may include the following substeps:

Sub-step S311, detecting the file type of the compressed file;

In a specific implementation, a compressed file generally has a file header (Main_Header), and the type of the compressed file is usually recorded in the file header (Main_Header), for example, RAR, ZIP, and the like.

Taking the compressed file in ZIP format as an example, the format description of the file header (Main_Header) can be as follows:

Sub-step S312, using the decompression method corresponding to the file type to decompress the compressed file to obtain at least part of the data of the file.

Each compressed file in a different format usually adopts a different compression method (such as a compression algorithm). In the embodiment of the present invention, a corresponding decompression method (such as a decompression algorithm) can be used for decompression.

Sub-step S32, sending at least part of the currently decompressed data to the client until the decompression is completed.

If part of the data of the file has been decompressed, the server can return the part of the data of the currently decompressed file to the client until the decompression is complete, and then send all the data of the file to the client.

In the client, the received files can be stored, and operations can also be performed online (such as displaying pictures, loading documents, playing audio/video, etc.), which is not limited in the embodiment of the present invention.

In an optional embodiment of the present invention, substep S32 may include the following substeps:

Sub-step S321, performing video transcoding operation on at least part of the currently decompressed data; and

In sub-step S322, at least part of the data after the current video transcoding is sent to the client for playback until the decompression is completed.

When the compressed file is video data, video transcoding operation (VideoTranscoding) can be performed on the video data to convert the compressed and coded video code stream into another video code stream to adapt to different network bandwidths, different terminal processing capabilities and Different user needs.

Transcoding is essentially a process of first decoding and then encoding, so the code stream before and after conversion may or may not follow the same video coding standard.

For example, most movies are stored in DVD discs in MPEG-2 format at present. In order to ensure the quality of the movie, the user directly compresses the movie in MPEG-2 format and uploads the compressed file to the network storage tool. The current user needs to play the movie in the MPEG-2 format in the compressed file online, but the network (especially the Internet) usually limits the bandwidth of the video transmission, causing the video to be played online.

In the embodiment of the present invention, the video data can be converted into a format with higher bandwidth efficiency, such as FLV format, through video transcoding operation before the movie is transmitted, so as to reduce the limitation of bandwidth, speed up the online playback response of the movie, and reduce the Stopping phenomenon and improving user experience.

For the decompression request of the compressed file, the embodiment of the present invention requests the compressed file from the file cluster, sends the decompressed data to the client while decompressing the compressed file, and realizes real-time and streaming Unzip, you don't need to wait to download the entire compressed file to get the desired file, which improves the simplicity of operation and supports online operation of compressed files.

For the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present invention is not limited by the described action order, because according to the embodiment of the present invention , certain steps may be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

Referring to FIG. 2 , it shows a schematic structural diagram of an embodiment of a device for decompressing compressed files according to an embodiment of the present invention, which may specifically include the following modules:

The request receiving module 201 is adapted to receive the decompression request of the client for the compressed file;

A compressed file request module 202, adapted to request the compressed file from the file cluster according to the decompression request; and

The file decompression module 203 is adapted to send the decompressed data of the compressed file to the client when decompressing the compressed file.

In an optional embodiment of the present invention, the request receiving module 201 may also be adapted to:

Receive the client's decompression request for compressed files forwarded by load balancing.

In an optional embodiment of the present invention, the compressed file request module 202 may also be adapted to:

extracting the file identifier of the compressed file from the download request; and

A compressed file corresponding to the file identifier is requested from the file cluster.

In an optional embodiment of the present invention, the file decompression module 203 may also be adapted to:

performing a decompression operation on the compressed file to obtain at least part of the data of the file;

Send at least part of the currently decompressed data to the client until the decompression is complete.

In an optional embodiment of the present invention, the file decompression module 203 may also be adapted to:

detecting the file type of the compressed file; and

Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file.

In an optional embodiment of the present invention, the file decompression module 203 may also be adapted to:

performing a video transcoding operation on at least a portion of the currently decompressed data; and

At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed.

In a specific implementation, one or more compressed data blocks of the compressed file may be stored in the file cluster, and each compressed data block may be associated with the file identifier.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other device. Various generic systems can also be used with the teachings based on this. The structure required to construct such a system is apparent from the above description. Furthermore, the present invention is not specific to any particular programming language. It should be understood that various programming languages can be used to implement the content of the present invention described herein, and the above description of specific languages is for disclosing the best mode of the present invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, in order to streamline this disclosure and to facilitate an understanding of one or more of the various inventive aspects, various features of the invention are sometimes grouped together in a single embodiment, figure, or its description. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. Modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore may be divided into a plurality of sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method or method so disclosed may be used in any combination, except that at least some of such features and/or processes or units are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will understand that although some embodiments described herein include some features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention. and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all functions of some or all components in the compressed file decompression device according to the embodiment of the present invention. The present invention can also be implemented as an apparatus or an apparatus program (for example, a computer program and a computer program product) for performing a part or all of the methods described herein. Such a program for realizing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

The embodiment of the present invention discloses A1, a method for decompressing compressed files, comprising:

Receive the client's decompression request for the compressed file;

requesting the compressed file from a file cluster according to the decompression request; and

When decompressing the compressed file, the decompressed data of the compressed file is sent to the client.

A2. The method as described in A1, the step of receiving the client's decompression request for the compressed file comprises:

Receive the client's decompression request for compressed files forwarded by load balancing.

A3, the method as described in A1, the step of requesting the compressed file from the file cluster according to the decompression request includes:

extracting the file identifier of the compressed file from the download request; and

A compressed file corresponding to the file identifier is requested from the file cluster.

A4. The method as described in A1 or A2 or A3, when the decompression operation is performed on the compressed file, the step of sending the decompressed data of the compressed file to the client includes:

performing a decompression operation on the compressed file to obtain at least some data of the file; and

Send at least part of the currently decompressed data to the client until the decompression is complete.

A5. The method as described in A4, the step of decompressing the compressed file to obtain at least part of the data of the file includes:

detecting the file type of the compressed file; and

Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file.

A6. The method as described in A4, the step of sending at least part of the currently decompressed data to the client until the decompression is completed includes:

performing a video transcoding operation on at least a portion of the currently decompressed data; and

At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed.

A7. The method according to any one of A1-A6, wherein one or more compressed data blocks of the compressed file are stored in the file cluster, and each compressed data block is associated with the file identifier.

The embodiment of the present invention also discloses B8, a device for decompressing compressed files, comprising:

The request receiving module is suitable for receiving the decompression request of the client for the compressed file;

a compressed file request module, adapted to request the compressed file from a file cluster according to the decompression request; and

The file decompression module is adapted to send the decompressed data of the compressed file to the client when decompressing the compressed file.

B9, the device as described in B8, the request receiving module is also suitable for:

Receive the client's decompression request for compressed files forwarded by load balancing.

B10, the device as described in B8, the compressed file request module is also suitable for:

extracting the file identifier of the compressed file from the download request; and

A compressed file corresponding to the file identifier is requested from the file cluster.

B11, the device as described in B8 or B9 or B10, the file decompression module is also suitable for:

performing a decompression operation on the compressed file to obtain at least some data of the file; and

Send at least part of the currently decompressed data to the client until the decompression is complete.

B12, the device as described in B11, the file decompression module is also suitable for:

detecting the file type of the compressed file; and

Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file.

B13, the device as described in B11, the file decompression module is also suitable for:

performing a video transcoding operation on at least a portion of the currently decompressed data; and

At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed.

B14. The device according to any one of B8-B13, wherein one or more compressed data blocks of the compressed file are stored in the file cluster, and each compressed data block is associated with the file identifier.

Claims (10)

1. A method for decompressing compressed files, comprising: Receive the client's decompression request for the compressed file; requesting the compressed file from a file cluster according to the decompression request; and When decompressing the compressed file, the decompressed data of the compressed file is sent to the client. 2. The method according to claim 1, wherein the step of receiving the client's decompression request for the compressed file comprises: Receive the client's decompression request for compressed files forwarded by load balancing. 3. The method according to claim 1, wherein the step of requesting the compressed file from the file cluster according to the decompression request comprises: extracting the file identifier of the compressed file from the download request; and A compressed file corresponding to the file identifier is requested from the file cluster. 4. The method according to claim 1, 2 or 3, wherein when the compressed file is decompressed, the decompressed data of the compressed file is sent to the The steps described above for the client include: performing a decompression operation on the compressed file to obtain at least some data of the file; and Send at least part of the currently decompressed data to the client until the decompression is complete. 5. The method according to claim 4, wherein the step of decompressing the compressed file to obtain at least part of the data of the file comprises: detecting the file type of the compressed file; and Decompressing the compressed file by using a decompression method corresponding to the file type to obtain at least part of the data of the file. 6. The method according to claim 4, wherein the step of sending at least part of the currently decompressed data to the client until the decompression is completed comprises: performing a video transcoding operation on at least a portion of the currently decompressed data; and At least part of the data after the current video transcoding is sent to the client for playing until the decompression is completed. 7. The method according to any one of claims 1-6, wherein one or more compressed data blocks of the compressed file are stored in the file cluster, and each compressed data block is associated with the file identifier associated. 8. A device for decompressing compressed files, comprising: The request receiving module is suitable for receiving the decompression request of the client for the compressed file; a compressed file request module, adapted to request the compressed file from a file cluster according to the decompression request; and The file decompression module is adapted to send the decompressed data of the compressed file to the client when decompressing the compressed file. 9. The device according to claim 8, wherein the request receiving module is further adapted to: Receive the client's decompression request for compressed files forwarded by load balancing. 10. The device according to claim 8, wherein the compressed file request module is further adapted to: extracting the file identifier of the compressed file from the download request; and A compressed file corresponding to the file identifier is requested from the file cluster.