CN112015594A - Backup method, device and equipment of rollback file and storage medium - Google Patents

Abstract

The invention relates to the field of research and development management, and discloses a backup method, a backup device, backup equipment and a backup storage medium for a rollback file, which are used for solving the problem of low efficiency of searching the rollback file when a file is rolled back by gray release. The backup method of the rollback file comprises the following steps: acquiring byte data of a file to be backed up, wherein the byte data is the size of a storage space occupied by the file to be backed up; supplementing the byte data by adopting a message digest algorithm to obtain initialized byte data; performing cyclic linear calculation on the initialized byte data by using a preset buffer to obtain a safety information code; acquiring a time stamp of a file to be backed up; and splicing the timestamp and the safety information code by using a combination algorithm to obtain the name of the file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up to obtain a rollback file, and storing the rollback file into a rollback folder. In addition, the invention also relates to a block chain technology, and the files to be backed up can be stored in the block chain.

Description

Backup method, device, device and storage medium for rollback files

technical field

The invention relates to the field of research and development management, and in particular, to a backup method, device, device and storage medium for rolling back files.

Background technique

With the continuous development and progress of computer technology, network projects in computer technology also need to be constantly updated. In the update of network projects, grayscale release is a common update method. Grayscale release refers to selecting some users to access the new version of the project according to specific rules, while some users still access the old version of the project, waiting for the function of the new version of the project. After the verification is successful, all user access is migrated to the new version of the project, and the update of the network project is completed.

When the project is released in Grayscale, once the new version of the project is found to have problems, the old version needs to be switched. In the prior art, when the server performs the file rollback function, it cannot accurately find the file name of the required rollback file, resulting in low efficiency of searching for the rollback file.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to solve the problem of low efficiency in searching for the rollback file when the file rollback is performed in grayscale publishing.

A first aspect of the present invention provides a backup method for rolling back files, including: acquiring byte data of a file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up; using a message digest The algorithm supplements the byte data to obtain initialized byte data; uses a preset buffer to perform cyclic linear calculation on the initialized byte data to obtain a security information code; obtains the timestamp of the file to be backed up, wherein, The time stamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up; the time stamp and the security information code are spliced using a combination algorithm to obtain the name of the file to be backed up, and the name of the file to be backed up is determined to be: Name the file to be backed up, obtain the rollback file, and save the rollback file in the rollback folder.

Optionally, in the first implementation manner of the first aspect of the present invention, the using a message digest algorithm to supplement the byte data to obtain the initialized byte data includes: using a message digest algorithm to determine the byte data. Whether the length of the byte data is equal to the preset byte length; if the length of the byte data is less than the preset byte length, supplement the length of the byte data until the length of the byte data reaches the preset length byte length to obtain supplementary byte data; if the length of the byte data is equal to the preset byte length, the byte data is determined as the byte data to be supplemented; in the byte data to be supplemented Add extended data after the last bit of , to obtain initialized byte data, wherein the extended data is data recording the length of the byte data.

Optionally, in the second implementation manner of the first aspect of the present invention, if the length of the byte data is less than the preset byte length, the length of the byte data is supplemented until the The length of the byte data reaches the preset byte length, and obtaining the supplementary byte data includes: if the length of the byte data is less than the preset byte length, calculating the amount of the byte data that needs to be supplemented according to the preset formula. Length n, the preset formula is: (n+m)mod512=448, where m is the length of the byte data, n is the length of the byte data to be supplemented, and both n and m are positive integers; A supplementary byte of length n is supplemented after the byte data to obtain the byte data to be supplemented.

Optionally, in a third implementation manner of the first aspect of the present invention, the using a preset buffer to perform cyclic linear calculation on the initialization byte data to obtain the security information code includes: initializing the preset buffer. , obtain the initial input value, and input the initial input value into the preset linear function to obtain the first calculation result; divide the initialized byte data into four groups on average to obtain the first grouped byte data, the second grouped byte data, third grouped byte data and fourth grouped byte data; adding the first calculation result and the first grouped byte data and inputting it into the preset linear function to obtain the first Second calculation result; add the second calculation result and the second grouped byte data and input it into the preset linear function to obtain a third calculation result; combine the third calculation result with the first After three groups of byte data are added and input into the preset linear function, a fourth calculation result is obtained; the fourth calculation result and the fourth group of byte data are added and input into the preset linear function In the function, a fifth calculation result is obtained; the second calculation result, the third calculation result, the fourth calculation result and the fifth calculation result are combined to obtain a security information code.

Optionally, in a fourth implementation manner of the first aspect of the present invention, the time stamp of the file to be backed up is obtained, wherein the time stamp is used to indicate that the file to be backed up executes the last modification instruction corresponding to The time includes: extracting the last time and the current time of the file to be backed up, wherein the last time includes the last access time, the last modification time, and the last modification time; respectively calculate the last access time and the current time. The first time interval between the last modification time and the current time, the second time interval between the last modification time and the current time, and the third time interval between the last modification time and the current time respectively; at the first time The target time interval with the smallest value of the screening time interval among the interval, the second time interval and the third time interval, and the last time corresponding to the target time interval is determined as the time stamp of the file to be backed up, wherein the The time stamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up.

Optionally, in a fifth implementation manner of the first aspect of the present invention, the time stamp and the security information code are spliced together using a combination algorithm to obtain the name of the file to be backed up, and the name of the file to be backed up is determined to be the name of the file to be backed up. Describe the naming of the file to be backed up, obtain the rollback file, and save the rollback file in the rollback folder, including: using a combination algorithm to extract the time stamp and security information code of the file to be backed up respectively; After the security information code is spliced into the timestamp, the name of the file to be backed up is obtained, the name of the file to be backed up is determined to be the name of the file to be backed up, the rollback file is obtained, and the rollback file is saved to the back-up file. scroll folder.

Optionally, in a sixth implementation manner of the first aspect of the present invention, the obtaining byte data of the file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up includes: Read the file to be backed up, and obtain a plurality of file data information in the to-be-backed file; according to a statistical algorithm, respectively count the number of bytes of each file data information in the plurality of file data information, and obtain a plurality of basic bytes Summarize the plurality of basic byte numbers to obtain byte data of the file to be backed up, where the byte data is the size of the storage space occupied by the file to be backed up.

A second aspect of the present invention provides a backup device for rolling back files, including: a first obtaining module, configured to obtain byte data of a file to be backed up, wherein the byte data is the storage occupied by the file to be backed up The size of the space; the supplementary module is used to supplement the byte data by using the message digest algorithm to obtain initialized byte data; the calculation module is used to perform circular linear calculation on the initialized byte data by using the preset buffer, obtaining a security information code; a second obtaining module for obtaining the timestamp of the file to be backed up, wherein the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up; determining and saving the module, It is used for splicing the time stamp and the security information code by using a combination algorithm, obtaining the name of the file to be backed up, determining that the name of the file to be backed up is the name of the file to be backed up, obtaining a rollback file, and rolling back the file. The file is saved to the rollback folder.

Optionally, in the first implementation manner of the second aspect of the present invention, the supplementary module includes: a judgment unit, configured to use a message digest algorithm to judge whether the length of the byte data is equal to the preset byte length; a determining unit, if the length of the byte data is less than the preset byte length, it is used to supplement the length of the byte data until the length of the byte data reaches the preset byte length, Obtaining the byte data to be supplemented; the second determining unit, if the length of the byte data is equal to the preset byte length, is used to determine the byte data as the byte data to be supplemented; the adding unit, using Adding extended data after the last bit of the supplementary byte data to obtain initialized byte data, wherein the extended data is data recording the length of the byte data.

Optionally, in the second implementation manner of the second aspect of the present invention, the first determination unit is specifically configured to: if the length of the byte data is less than the preset byte length, then according to the preset formula Calculate the length n of the byte data that needs to be supplemented. The preset formula is: (n+m)mod512=448, where m is the length of the byte data, n is the length of the byte data that needs to be supplemented, and both n and m are is a positive integer; after the byte data, supplementary bytes with a length of n are added to obtain the byte data to be supplemented.

Optionally, in a third implementation manner of the second aspect of the present invention, the computing module is specifically configured to: initialize the preset buffer, obtain an initial input value, and input the initial input value into a preset In the linear function, the first calculation result is obtained; the initialization byte data is equally divided into four groups, and the first grouped byte data, the second grouped byte data, the third grouped byte data and the fourth grouped byte are obtained respectively. data; add the first calculation result and the first grouped byte data and input it into the preset linear function to obtain a second calculation result; combine the second calculation result with the second grouping The byte data is added and input into the preset linear function to obtain a third calculation result; the third calculation result and the third grouped byte data are added and input into the preset linear function , obtain the fourth calculation result; add the fourth calculation result and the fourth grouped byte data and input it into the preset linear function to obtain the fifth calculation result; combine the second calculation result, The third calculation result, the fourth calculation result and the fifth calculation result are combined to obtain a security information code.

Optionally, in a fourth implementation manner of the second aspect of the present invention, the second acquisition module is specifically configured to: extract the last time and the current time of the file to be backed up, wherein the last time includes the last time. Access time, last modification time, and last modification time; respectively calculate the first time interval between the last access time and the current time, the second time interval between the last modification time and the current time, and all The third time interval between the last modification moment and the current moment respectively; in the first time interval, the second time interval and the third time interval, the target time interval with the smallest time interval value is screened, The last time corresponding to the target time interval is determined as the time stamp of the file to be backed up, where the time stamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up.

Optionally, in a fifth implementation manner of the second aspect of the present invention, the determining and saving module is specifically configured to: extract the time stamp and security information code of the file to be backed up by using a combination algorithm; After the security information code is spliced into the timestamp, the name of the file to be backed up is obtained, the name of the file to be backed up is determined to be the name of the file to be backed up, the rollback file is obtained, and the rollback file is saved to the back-up file. scroll folder.

Optionally, in a sixth implementation manner of the second aspect of the present invention, the first obtaining module is specifically configured to: read the file to be backed up, and obtain a plurality of file data information in the file to be backed up; The statistical algorithm separately counts the number of bytes of each file data information in the plurality of file data information to obtain a plurality of basic byte numbers; summarizes the plurality of basic byte numbers to obtain the byte data of the file to be backed up , wherein the byte data is the size of the storage space occupied by the file to be backed up.

A third aspect of the present invention provides a backup device for rolling back files, comprising: a memory and at least one processor, wherein instructions are stored in the memory, and the memory and the at least one processor are interconnected through a line; the At least one processor invokes the instructions in the memory, so that the backup device for rolling back files executes the above-mentioned backup method for rolling back files.

A fourth aspect of the present invention provides a computer-readable storage medium, the computer-usable storage medium may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application required for at least one function Programs, etc.; the storage data area can store data created according to the use of blockchain nodes, etc. The computer-readable storage medium stores instructions, which when run on a computer, cause the computer to execute the above-mentioned backup method for rolling back files.

In the technical solution provided by the present invention, the byte data of the file to be backed up is obtained, wherein the byte data is the size of the storage space occupied by the file to be backed up; the byte data is supplemented by a message digest algorithm, Obtain initialization byte data; perform cyclic linear calculation on the initialization byte data by using a preset buffer to obtain a security information code; obtain the timestamp of the to-be-backed-up file, where the timestamp is used to indicate the to-be-backed-up file The time corresponding to the last modification instruction of the backup file is executed; the time stamp and the security information code are spliced together using a combination algorithm to obtain the name of the file to be backed up, and the name of the file to be backed up is determined to be the name of the file to be backed up, and the return is obtained. rollback file and save the rollback file in the rollback folder. In the embodiment of the present invention, the rollback file is named by combining the timestamp and the security information code, so that the rollback file name is unique, thereby improving the efficiency of the server to find the rollback file.

Description of drawings

1 is a schematic diagram of an embodiment of a backup method for rolling back files in an embodiment of the present invention;

2 is a schematic diagram of another embodiment of a backup method for rolling back files in an embodiment of the present invention;

3 is a schematic diagram of an embodiment of a backup device for rolling back files in an embodiment of the present invention;

4 is a schematic diagram of another embodiment of a backup device for rolling back files according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an embodiment of a backup device for rolling back files in an embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide a backup method, device, device and storage medium for rollback files. By combining a timestamp and a security information code, the rollback file is named, so that the rollback file name is unique, thereby improving the performance of the rollback file. It improves the efficiency of the server to find the rollback file.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed steps or units, but may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

For ease of understanding, the following describes the specific process of the embodiment of the present invention. Referring to FIG. 1, an embodiment of the backup method for rolling back files in the embodiment of the present invention includes:

101. Obtain byte data of the file to be backed up, where the byte data is the size of the storage space occupied by the file to be backed up;

It can be understood that the execution body of the present invention may be a backup device for rolling back files, and may also be a terminal or a server, which is not specifically limited here. The embodiments of the present invention are described by taking a server as an execution subject as an example.

The server obtains the byte data of the storage space occupied by the files to be backed up.

When naming the files to be backed up, the uniqueness of the names of the files to be backed up must be guaranteed. Therefore, the server must first obtain the byte data of the files to be backed up, and the obtained byte data clearly indicates the size of the space occupied by the files to be backed up. The security information code is calculated from the byte data of the file to be backed up, and finally combined with the timestamp of the file to be backed up, as the unique name of the file to be backed up. It should be emphasized that, in order to further ensure the integrity and security of the above-mentioned files to be backed up, the above-mentioned files to be backed up can be stored in a blockchain.

102. Use the message digest algorithm to supplement the byte data to obtain initialized byte data;

The server uses the message digest algorithm to supplement the byte data to obtain the initialized byte data.

When naming the file to be backed up, a message digest algorithm is used, and the message digest algorithm is used to calculate a security information code related to the byte data of the file to be backed up, and the security information code is used as a part of the name of the file to be backed up. The message digest algorithm here is MD5 message-digest algorithm (MD5). MD5 is a widely used cryptographic hash function, which can generate a 128-bit (16-byte) hash function according to the input data. Column value, and this hash value is uniquely determined to ensure complete and consistent information transmission.

It is further explained that the security information code is generated by the MD5 algorithm according to the byte data of the file to be backed up, the MD5 code processes the input byte data in 512-bit groups, and each group is divided into 16 32-bit subgroups, After the processing of complement, expansion and cyclic linear operation, the output value is obtained by four 32-bit groups. After the four 32-bit groups are concatenated, a 128-bit hash value will be generated to obtain the security information code.

103. Use the preset buffer to perform cyclic linear calculation on the initialization byte data to obtain the security information code;

The server uses the preset buffer to perform circular linear calculation on the initialized byte data to obtain the security information code.

After the server obtains the initialized byte data of the file to be backed up, it needs to use the preset buffer to perform cyclic linear calculation on the initialized byte data. The server first initializes the preset buffer to obtain four sets of initial input values, and then uses the four The initial input values of the group are respectively input into the preset linear functions to obtain the first calculation result, and then the first calculation result and the initialized byte data are subjected to circular linear calculation to obtain another four calculation results, and finally the obtained multiple calculation results Combined, the final security information code is obtained.

104. Obtain a timestamp of the file to be backed up, where the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up;

The server obtains the time stamp of the file to be backed up and is used to indicate the time corresponding to the last modification instruction of the file to be backed up.

It can be understood that a timestamp refers to a complete and verifiable data that can indicate that a piece of data has existed before a certain time, usually using a character sequence to indicate a unique time. The timestamp representation format here is: year, month, day, hour, minute, second, and the time when the file to be backed up performs the last operation is used as the time stamp, where the time stamp is used to indicate the time corresponding to the last change instruction of the file to be backed up. Taking a moment as a part of the naming of the files to be backed up reduces the overlapping of the names of the files to be backed up, and at the same time improves the uniqueness of the naming of the files to be backed up.

105. Use a combination algorithm to splice the timestamp and the security information code to obtain the name of the file to be backed up, determine that the name of the file to be backed up is the name of the file to be backed up, obtain the rollback file, and save the rollback file in the rollback folder.

The server uses a combination algorithm to splice the timestamp and the security information code to obtain the name of the file to be backed up, determines that the name of the file to be backed up is the name of the file to be backed up, obtains the rollback file, and saves the rollback file to the rollback folder.

It should be noted that, after the server calculates the time stamp and the security information code of the file to be backed up, the server combines the time stamp and the security information code with a combination algorithm to obtain a unique name of the file to be backed up. The combination algorithm is an algorithm that splices the timestamp and the security information code together according to the sequence of the timestamp first and the security information code last, and then the server determines the spliced timestamp and the security information code as the name of the file to be backed up. When querying the name of the file to be backed up, first query the timestamp, and then determine the unique security information code, so that the file to be backed up can be accurately queried.

In the embodiment of the present invention, the rollback file is named by combining the timestamp and the security information code, so that the rollback file name is unique, thereby improving the efficiency of the server to find the rollback file.

Referring to FIG. 2, another embodiment of the backup method for rolling back files in the embodiment of the present invention includes:

201. Obtain byte data of the file to be backed up, where the byte data is the size of the storage space occupied by the file to be backed up;

The server obtains the byte data of the storage space occupied by the files to be backed up. specific:

First, the server reads the file to be backed up, and obtains multiple file data information in the to-be-backed up file; then the server counts the number of bytes of each file data information in the multiple file data information according to a statistical algorithm, and obtains multiple basic bytes Finally, the server aggregates multiple basic byte numbers to obtain byte data used to indicate the size of the storage space occupied by the files to be backed up.

When naming the files to be backed up, the uniqueness of the names of the files to be backed up must be guaranteed. Therefore, the server must first obtain the byte data of the files to be backed up, and the obtained byte data clearly indicates the size of the space occupied by the files to be backed up. The security information code is calculated from the byte data of the file to be backed up, and finally combined with the timestamp of the file to be backed up, as the unique name of the file to be backed up. It should be emphasized that, in order to further ensure the integrity and security of the above-mentioned files to be backed up, the above-mentioned files to be backed up can be stored in a blockchain.

When obtaining the byte data of the file to be backed up, the server first reads the file to be backed up, queries and obtains multiple file data information in the file to be backed up, and the file to be backed up stores at least one file data information, where the file data information Refers to the file content stored in the file to be backed up, and then the server counts the number of bytes in the data information of multiple files according to the statistical algorithm, and obtains multiple basic bytes, where the number of bytes refers to the file data information The number of bytes occupied by the content in the file. The statistical algorithm is that an English letter, number and punctuation in English format in the file content is 1 byte, and a Chinese character and Chinese punctuation are 2 bytes. The statistical algorithm can be used to calculate the file. The number of bytes occupied by the content in the data information. After the server obtains multiple basic bytes, it summarizes the basic bytes, that is, adds all the basic bytes to get the word of the file to be backed up. Section data, in general, a statistical algorithm can achieve the effect of calculating the number of bytes occupied by the information content of the file data. The statistical algorithm is a common method in the technical field and will not be described in detail in this application.

202. Use a message digest algorithm to supplement the byte data to obtain initialized byte data;

The server uses the message digest algorithm to supplement the byte data to obtain the initialized byte data. specific:

The server first uses the message digest algorithm to determine whether the length of the byte data is equal to the preset byte length; if the length of the byte data is less than the preset byte length, the server supplements the length of the byte data until the length of the byte data reaches the preset length. Set the byte length to get the byte data to be supplemented; if the length of the byte data is equal to the preset byte length, the server determines the byte data as the byte data to be supplemented; finally, the server determines the byte data to be supplemented in the last byte of the byte data to be supplemented. Length extension data for recording byte data is added after the bit to obtain initialized byte data.

If the length of the byte data is less than the preset byte length, the server supplements the length of the byte data until the length of the byte data reaches the preset byte length to obtain supplementary byte data. Specifically: if the length of the byte data is less than the preset byte length, the server calculates the length n of the byte data to be supplemented according to the preset formula. The preset formula is: (n+m)mod512=448, where m is The length of the byte data, n is the length of the byte data to be supplemented, and both n and m are positive integers; the server supplements the byte data with supplementary bytes of length n to obtain the byte data to be supplemented.

When naming the file to be backed up, a message digest algorithm is used, and the message digest algorithm is used to calculate a security information code related to the byte data of the file to be backed up, and the security information code is used as a part of the name of the file to be backed up. The message digest algorithm here is MD5 message-digest algorithm (MD5). MD5 is a widely used cryptographic hash function, which can generate a 128-bit (16-byte) hash function according to the input data. Column value, and this hash value is uniquely determined to ensure complete and consistent information transmission.

It is further explained that if there are two files to be backed up with the same MD5 information code, it means that the two files to be backed up are exactly the same. As long as there is one difference in the files to be backed up, the corresponding generated MD5 codes are completely different, for example: to be backed up The file content in the backup file A has one more space than the file content in the to-be-backed-up file B, and the MD5 generated by the two to-be-backed up files are different.

When using the MD5 algorithm to calculate the security information code, the server first needs to determine whether the byte data length of the file to be backed up is equal to the preset byte length. If the byte data length of the to-be-backed file is equal to the preset byte length, the server can directly download One-step calculation, if the length of the byte data of the file to be backed up is less than the preset byte length, the server needs to supplement the byte data. It should be noted that the length of the preset byte here is much larger than the length of the byte data of the file to be backed up. Therefore, there is no situation where the length of the byte data of the file to be backed up is greater than the length of the preset byte.

In the process of supplementing the byte data, the server first calculates the length n of the byte data that needs to be supplemented according to the preset formula, that is, the byte data is supplemented bit by bit. The preset formula used is: (n+m )mod512=448, in the formula: m is the length of the byte data, n is the length of the byte data that needs to be supplemented, and n, m are both positive integers, the above formula shows that the supplemented byte data needs to meet the final word. The condition that the number of bits of the section data is modulo 512 is 448, that is to say, after the byte data is supplemented, the length of its bits is only 64 bits (bit), which is an integer multiple of 512, even if the number of bytes of the byte data is an integer multiple of 512. The result of modulo 512 is that 448 must also be complemented. When the byte data is supplemented with byte digits, the server first adds a number 1 after the byte data, and then adds n-1 numbers 0 after it, until the number of bits of the entire supplementary byte data is modulo 512. Exactly 448, with at least 1 supplementary byte and a maximum of 512 bits.

After the server completes the operation of supplementing the number of bytes of data, it needs to supplement a 64-bit data representing the original length of the data. After the description of the data, it is obtained that the length of the initialized byte data is an integer multiple of 512, and then the server performs cyclic linear calculation on the initialized byte data to obtain the security information code. It is further explained that if the length of the byte data meets the preset byte length, the server also needs to supplement the byte data, and the 64-bit data that identifies the original length of the data can be supplemented after the byte data to obtain the initialized byte data. .

203. Use the preset buffer to perform cyclic linear calculation on the initialization byte data to obtain a security information code;

The server uses the preset buffer to perform circular linear calculation on the initialized byte data to obtain the security information code. specific:

The server first initializes the preset buffer to obtain the initial input value, and inputs the initial input value into the preset linear function to obtain the first calculation result; secondly, the server divides the initialization byte data into four groups on average to obtain the first grouping word respectively. byte data, the second packet byte data, the third packet byte data, and the fourth packet byte data; then the server adds the first calculation result and the first packet byte data and inputs it into the preset linear function to obtain The second calculation result; the server adds the second calculation result and the second grouped byte data and inputs it into the preset linear function to obtain the third calculation result; the server adds the third calculation result and the third grouped byte data Then input it into the preset linear function to obtain the fourth calculation result; the server adds the fourth calculation result and the fourth packet byte data and inputs it into the preset linear function to obtain the fifth calculation result; The second calculation result, the third calculation result, the fourth calculation result and the fifth calculation result are combined to obtain the security information code.

After the server obtains the initialized byte data of the file to be backed up, it needs to use the preset buffer to perform cyclic linear calculation on the initialized byte data. The server first initializes the preset buffer to obtain four sets of initial input values, and then uses the four The initial input values of the group are respectively input into the preset linear functions to obtain the first calculation result, and then the first calculation result and the initialized byte data are subjected to cyclic linear calculation, and finally the multiple calculation results obtained are combined to obtain the final security. information code.

When the server performs circular linear calculation, the server first initializes the preset buffer, and obtains four sets of initial input values, which are A: 01 23 45 67; B: 89ab cd ef; C: fe dc ba 98; D: 76 54 32 10. Then the server inputs the four groups of initial input values into the preset linear function respectively. The operation here is to process the initial values in units of 512-bit data segments. After processing, the server obtains the first calculation result. After obtaining the first calculation result, the server divides the initialization byte data into four groups equally, and obtains the first group byte data, the second group byte data, the third group byte data and the fourth group byte data respectively. Add the first calculation result and the first grouped byte data and input it into the preset linear function to obtain the second calculation result. The server adds the second calculation result and the second grouped byte data and then inputs it into the preset linear function. In the function, the third calculation result is obtained, the server adds the third calculation result and the third grouped byte data and inputs it into the preset linear function to obtain the fourth calculation result, and the server combines the fourth calculation result with the fourth grouped word. After adding the section data and inputting it into the preset linear function, the fifth calculation result is obtained. After four rounds of linear processing, the server will obtain the second calculation result, the third calculation result, the fourth calculation result and the fifth calculation result. Merge to get the final security information code.

204. Obtain a timestamp of the file to be backed up, where the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up;

The server obtains the time stamp of the file to be backed up and is used to indicate the time corresponding to the last modification instruction of the file to be backed up. specific:

The server first extracts the last time and the current time of the file to be backed up, where the last time includes the last access time, the last modification time, and the last modification time; secondly, the server calculates the first time interval between the last access time and the current time, the last time The second time interval between the modification time and the current time and the third time interval between the last modification time and the current time respectively; finally, the server filters the time interval values in the first time interval, the second time interval and the third time interval For the minimum target time interval, the last time corresponding to the target time interval is determined as the time stamp of the file to be backed up, where the time stamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up executed.

It can be understood that a timestamp refers to a complete and verifiable data that can indicate that a piece of data has existed before a certain time, usually using a character sequence to indicate a unique time. The timestamp representation format here is: year, month, day, hour, minute, second, and the time when the file to be backed up performs the last operation is used as the time stamp, where the time stamp is used to indicate the time corresponding to the last change instruction of the file to be backed up. Taking a moment as a part of the naming of the files to be backed up reduces the overlapping of the names of the files to be backed up, and at the same time improves the uniqueness of the naming of the files to be backed up.

It should be noted that the last operation performed by the server on the backup file may be: access, modification or change, and the corresponding times are the last access time, the last modification time, and the last modification time. The last access time is used to indicate the time when the file to be backed up is last accessed. This refers to reading the content of the file to be backed up, but does not include reading the content on the node of the file to be backed up; the last modification time is used to indicate the time to be backed up. The time when the backup file was last modified, the modification here refers to the content of the file to be backed up being modified by the server; the last modification time is used to indicate the time when the file to be backed up was last modified, and the modification here refers to the file to be backed up The nature of the file is modified by the server, for example, the owner or authority of the file to be backed up is modified. The server obtains the last operation of executing these instructions, compares the last operation time with the current time, and selects the last operation time with the shortest time interval from the current time as the timestamp of the file to be backed up.

For example, the server obtains the last access time at 12:24:30 on May 06, 2019, and the last modification time is at 12:25:30 on May 6, 2019 for the last operation time in the file to be backed up. Second, the last change time is 12:26:30 on May 06, 2019, and the current time is 12:28:30 on May 06, 2019. According to different time information, the current time and The first time interval between the last access time is 4 minutes, the second time interval between the current time and the last modification time is 3 minutes, and the third time interval between the current time and the last modification time is 2 minutes, so choose The data at the last change time is used as the timestamp of the file to be backed up, and the format of the timestamp is 20190506122630.

205. Use a combination algorithm to extract the timestamp and the security information code of the file to be backed up respectively;

The server uses a combination algorithm to extract the time stamp and security information code of the files to be backed up respectively.

It should be noted that, after the server obtains the time stamp and the security information code of the file to be backed up by calculation, the server needs to combine the time stamp and the security information code to obtain a unique name of the file to be backed up. Before using the combined algorithm to splicing the time stamp and the security information code, it is first necessary to obtain the time stamp and security information code of the file to be backed up.

206. Use the preset connector to splice the security information code after the time stamp, obtain the name of the file to be backed up, determine that the name of the file to be backed up is the name of the file to be backed up, obtain the rollback file, and save the rollback file to the rollback file in the folder.

The server uses the preset connector to splicing the security information code after the timestamp, obtains the name of the file to be backed up, determines that the name of the file to be backed up is the name of the file to be backed up, obtains the rollback file, and saves the rollback file to the rollback folder middle.

It can be understood that the combination algorithm is an algorithm that splices the timestamp and the security information code together according to the order of the timestamp and the security information code, and then the server determines the spliced timestamp and the security information code as pending. Backup file name. When querying the name of the file to be backed up, first query the timestamp, and then determine the unique security information code, so that the file to be backed up can be accurately queried. It should be noted that, in order to better distinguish the time stamp and the security information code, when splicing the time stamp and the security information code, a preset connector needs to be added between the two, and the preset connector in this application is "_", the name of the file to be backed up generated in this way is more intuitive and more recognizable.

For example, the timestamp calculated by the server is: 20190910180245, and the security information code is: 3b4ea74b42c390e3dd526ef0c488364e, then the final name of the file to be backed up is: 20190910180245_3b4ea74b42c390e3dd526ef0c488364e.

To further illustrate, rollback refers to the act of restoring a program or data to the last correct version when an error occurs in the program or data. During the rollback process, it is necessary to specify which correct version to roll back to. Generally, the query of the rollback version is screened by the file name, and the unique file name corresponds to the unique version, so that the rollback is executed. During the process, there will be no rollback version errors and rollback failures. If the server encounters a problem in the test after the grayscale release and needs to perform a file rollback operation, the server first obtains the required file rollback request. The file rollback request here is used to indicate that the server needs to roll back to a specific file. A to-be-backed-up file whose content is a name that clearly indicates that the file to be backed up needs to be rolled back. After the server queries the to-be-backed up file corresponding to the rollback file request, the server transfers the to-be-backed up file to each file under the deployment unit. On one server, overwrite the original file, realize the rollback and replacement of the file to be backed up, and complete the file rollback instruction issued by the server.

In the embodiment of the present invention, the rollback file is named by combining the timestamp and the security information code, so that the rollback file name is unique, thereby improving the efficiency of the server to find the rollback file.

The backup method for rolling back files in the embodiment of the present invention has been described above. The following describes the backup device for rolling back files in the embodiment of the present invention. Please refer to FIG. 3 , an embodiment of the backup device for rolling back files in the embodiment of the present invention. include:

The first obtaining module 301 is used to obtain the byte data of the file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up;

A supplementary module 302, configured to supplement the byte data by using a message digest algorithm to obtain initialized byte data;

The calculation module 303 is used to perform circular linear calculation on the initialization byte data by using a preset buffer to obtain a security information code;

The second obtaining module 304 is configured to obtain the timestamp of the file to be backed up, wherein the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up;

The determining and saving module 305 is used for splicing the time stamp and the security information code using a combination algorithm to obtain the name of the file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up, and obtaining the rollback file , and save the rollback file to the rollback folder.

In the embodiment of the present invention, the rollback file is named by combining the timestamp and the security information code, so that the rollback file name is unique, thereby improving the efficiency of the server to find the rollback file.

Referring to FIG. 4 , another embodiment of the backup apparatus for rolling back files according to the embodiment of the present invention includes:

The first obtaining module 301 is used to obtain the byte data of the file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up;

A supplementary module 302, configured to supplement the byte data by using a message digest algorithm to obtain initialized byte data;

The calculation module 303 is used to perform circular linear calculation on the initialization byte data by using a preset buffer to obtain a security information code;

The second obtaining module 304 is configured to obtain the timestamp of the file to be backed up, wherein the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up;

The determining and saving module 305 is used for splicing the time stamp and the security information code using a combination algorithm to obtain the name of the file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up, and obtaining the rollback file , and save the rollback file to the rollback folder.

Optionally, the supplementary module 302 includes:

Judging unit 3021, for using message digest algorithm to judge whether the length of the byte data is equal to the preset byte length;

The first determining unit 3022 is used to supplement the length of the byte data if the length of the byte data is less than the preset byte length until the length of the byte data reaches the preset byte length, get the byte data to be supplemented;

The second determination unit 3023, if the length of the byte data is equal to the preset byte length, is used to determine the byte data as the byte data to be supplemented;

The adding unit 3024 is configured to add extended data after the last bit of the byte data to be supplemented to obtain initialized byte data, where the extended data is data recording the length of the byte data.

Optionally, the first determining unit 3022 may also be specifically used for:

If the length of the byte data is less than the preset byte length, the length n of the byte data to be supplemented is calculated according to the preset formula, and the preset formula is: (n+m)mod512=448, wherein, m is the length of the byte data, n is the length of the byte data to be supplemented, and both n and m are positive integers;

A supplementary byte of length n is supplemented after the byte data to obtain the byte data to be supplemented.

Optionally, the computing module 303 can also be specifically used for:

Initializing the preset buffer to obtain an initial input value, and inputting the initial input value into a preset linear function to obtain a first calculation result;

The initialization byte data is evenly divided into four groups, and the first grouped byte data, the second grouped byte data, the third grouped byte data and the fourth grouped byte data are obtained respectively;

adding the first calculation result to the first grouped byte data and inputting it into the preset linear function to obtain a second calculation result;

adding the second calculation result and the second packet byte data and inputting it into the preset linear function to obtain a third calculation result;

adding the third calculation result to the third packet byte data and inputting it into the preset linear function to obtain a fourth calculation result;

The fourth calculation result is added to the fourth packet byte data and then input into the preset linear function to obtain the fifth calculation result;

The second calculation result, the third calculation result, the fourth calculation result and the fifth calculation result are combined to obtain a security information code.

Optionally, the second obtaining module 304 may also be specifically used for:

Extracting the last time and the current time of the file to be backed up respectively, wherein the last time includes the last access time, the last modification time, and the last modification time;

Calculate the first time interval between the last access time and the current time, the second time interval between the last modification time and the current time, and the difference between the last modification time and the current time, respectively. the third time interval between;

The target time interval with the smallest time interval value among the first time interval, the second time interval and the third time interval is screened, and the last time corresponding to the target time interval is determined as the time interval of the file to be backed up. Timestamp, wherein the timestamp is used to indicate the time corresponding to the last modification instruction of the file to be backed up.

Optionally, the determining and saving module 305 can also be specifically used for:

The time stamp and security information code of the file to be backed up are extracted by a combined algorithm;

The security information code is spliced after the timestamp by using a preset connector to obtain the name of the file to be backed up, determine that the name of the file to be backed up is the name of the file to be backed up, obtain a rollback file, and store the file to be backed up. The rollback file is saved to the rollback folder.

Optionally, the first obtaining module 301 may also be specifically used for:

Read the file to be backed up, and obtain a plurality of file data information in the file to be backed up;

According to a statistical algorithm, the number of bytes of each file data information in the plurality of file data information is separately counted to obtain a plurality of basic byte numbers;

Summarize the plurality of basic byte numbers to obtain byte data of the file to be backed up, where the byte data is the size of the storage space occupied by the file to be backed up.

In the embodiment of the present invention, the rollback file is named by combining the timestamp and the security information code, so that the rollback file name is unique, thereby improving the efficiency of the server to find the rollback file.

3 and 4 above describe in detail the backup device for rolling back files in the embodiment of the present invention from the perspective of modular functional entities, and the following describes the backup device for rolling back files in the embodiment of the present invention in detail from the perspective of hardware processing.

5 is a schematic structural diagram of a backup device for rolling back files according to an embodiment of the present invention. The backup device 500 for rolling back files may vary greatly due to different configurations or performance, and may include one or more processors Central processing units (CPU) 510 (eg, one or more processors) and memory 520 , one or more storage media 530 (eg, one or more mass storage devices) that store application programs 533 or data 532 . Among them, the memory 520 and the storage medium 530 may be short-term storage or persistent storage. The program stored in the storage medium 530 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the backup device 500 for rolling back files. Furthermore, the processor 510 may be configured to communicate with the storage medium 530 to execute a series of instruction operations in the storage medium 530 on the backup device 500 for rolling back files.

The backup device 500 for rolling back files may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input and output interfaces 560, and/or, one or more operating systems 531, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD and many more. Those skilled in the art can understand that the structure of the backup device for the rollback file shown in FIG. 5 does not constitute a limitation on the backup device for the rollback file, and may include more or less components than those shown in the figure, or combine some components , or a different component arrangement.

Further, the computer usable storage medium may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function, and the like; using the created data, etc.

The present invention also provides a computer-readable storage medium. The computer-readable storage medium may be a non-volatile computer-readable storage medium. The computer-readable storage medium may also be a volatile computer-readable storage medium. The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to execute the steps of the method for backing up a rollback file.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A backup method of a rollback file is characterized by comprising the following steps:

acquiring byte data of a file to be backed up, wherein the byte data is the size of a storage space occupied by the file to be backed up;

supplementing the byte data by adopting a message digest algorithm to obtain initialized byte data;

performing cyclic linear calculation on the initialized byte data by using a preset buffer to obtain a safety information code;

acquiring a time stamp of the file to be backed up, wherein the time stamp is used for indicating the time corresponding to the last change instruction executed by the file to be backed up;

and splicing the timestamp and the safety information code by using a combination algorithm to obtain a name of a file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up to obtain a rollback file, and storing the rollback file into a rollback folder.

2. The method for backing up a rollback file according to claim 1, wherein said supplementing said byte data with a message digest algorithm to obtain initialized byte data comprises:

judging whether the length of the byte data is equal to a preset byte length by adopting a message digest algorithm;

if the length of the byte data is smaller than the preset byte length, supplementing the length of the byte data until the length of the byte data reaches the preset byte length to obtain byte data to be supplemented;

if the length of the byte data is equal to the preset byte length, determining the byte data as byte data to be supplemented;

and adding extension data after the last bit of the byte data to be supplemented to obtain initialized byte data, wherein the extension data is data for recording the length of the byte data.

3. The method for backing up a rollback file according to claim 2, wherein if the length of the byte data is smaller than the preset byte length, the length of the byte data is supplemented until the length of the byte data reaches the preset byte length, and obtaining byte data to be supplemented includes:

if the length of the byte data is less than the preset byte length, calculating the length n of the byte data needing to be supplemented according to a preset formula, wherein the preset formula is as follows: (n + m) mod512 ═ 448, where m is the length of byte data, n is the length of byte data to be supplemented, and n and m are both positive integers;

and supplementing the supplementary bytes with the length of n behind the byte data to obtain the byte data to be supplemented.

4. The method for backing up a rollback file according to claim 1, wherein said performing a circular linear calculation on said initialization byte data using a pre-buffer to obtain a security information code comprises:

initializing the preset buffer to obtain an initial input value, and inputting the initial input value into a preset linear function to obtain a first calculation result;

averagely dividing the initialization byte data into four groups to respectively obtain first grouping byte data, second grouping byte data, third grouping byte data and fourth grouping byte data;

adding the first calculation result and the first grouped byte data and inputting the result into the preset linear function to obtain a second calculation result;

adding the second calculation result and the second byte data to be input into the preset linear function to obtain a third calculation result;

adding the third calculation result and the third packet byte data, and inputting the result into the preset linear function to obtain a fourth calculation result;

adding the fourth calculation result and the fourth grouped byte data and inputting the result into the preset linear function to obtain a fifth calculation result;

and combining the second calculation result, the third calculation result, the fourth calculation result and the fifth calculation result to obtain a safety information code.

5. The method for backing up a rollback file according to claim 1, wherein the obtaining a timestamp of the file to be backed up, wherein the timestamp is used to indicate a time corresponding to a last change instruction executed by the file to be backed up, includes:

respectively extracting the last time and the current time of the file to be backed up, wherein the last time comprises the last access time, the last modification time and the last change time;

respectively calculating a first time interval between the last access time and the current time, a second time interval between the last modification time and the current time and a third time interval between the last modification time and the current time;

and screening a target time interval with the smallest time interval value from the first time interval, the second time interval and the third time interval, and determining the last time corresponding to the target time interval as a time stamp of the file to be backed up, wherein the time stamp is used for indicating the time corresponding to the last change instruction executed by the file to be backed up.

6. The method for backing up a rollback file according to claim 1, wherein the splicing the timestamp and the security information code using a binding algorithm to obtain a name of a file to be backed up, determining that the name of the file to be backed up is the name of the file to be backed up, obtaining the rollback file, and storing the rollback file in a rollback folder comprises:

respectively extracting the time stamp and the safety information code of the file to be backed up by adopting a combination algorithm;

splicing the safety information code after the time stamp by using a preset connector to obtain a name of a file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up to obtain a rollback file, and storing the rollback file into a rollback folder.

7. The method for backing up a rollback file according to any one of claims 1-6, wherein the obtaining byte data of the file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up, comprises:

reading a file to be backed up, and acquiring a plurality of file data information in the file to be backed up;

respectively counting the byte number of each file data information in the plurality of file data information according to a counting algorithm to obtain a plurality of basic byte numbers;

summarizing the basic byte numbers to obtain byte data of the file to be backed up, wherein the byte data is the size of the storage space occupied by the file to be backed up.

8. A backup apparatus for a rollback file, comprising:

the device comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring byte data of a file to be backed up, and the byte data is the size of a storage space occupied by the file to be backed up;

the supplement module is used for supplementing the byte data by adopting a message digest algorithm to obtain initialized byte data;

the calculation module is used for performing cyclic linear calculation on the initialized byte data by utilizing a preset buffer to obtain a safety information code;

the second obtaining module is used for obtaining a timestamp of the file to be backed up, wherein the timestamp is used for indicating the moment corresponding to the last change instruction executed by the file to be backed up;

and the determining and storing module is used for splicing the timestamp and the safety information code by using a combination algorithm to obtain a name of the file to be backed up, determining the name of the file to be backed up as the name of the file to be backed up to obtain a rollback file, and storing the rollback file into a rollback folder.

9. A backup device for a rollback file, the backup device comprising: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line;

the at least one processor invokes the instructions in the memory to cause the rollback file backup device to perform the rollback file backup method of any of claims 1-7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of backing up a rollback file according to any one of claims 1-7.

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