CN116610634A - File synchronization system and method for network disk terminal - Google Patents
File synchronization system and method for network disk terminal Download PDFInfo
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000003607 modifier Substances 0.000 claims description 8
- 238000013507 mapping Methods 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/11—File system administration, e.g. details of archiving or snapshots
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
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Abstract
The invention provides a file synchronization system and method of a network disk terminal, and belongs to the technical field of computers. The system comprises: the network disk terminal comprises a file change detection component, an operation recording component, a permission management and control component and an uploading and downloading capability component. The file change detection component is used for detecting whether the synchronous file catalogue of the network disk terminal is changed or not; the right management and control component is used for managing and controlling the information of the right synchronized by the network disk server; the operation recording component is used for recording unprocessed file change events; the uploading and downloading capability component is used for uploading the local change file and downloading the change file of the network disk server, so that the files of the network disk terminal and the network disk server are kept synchronous. The network disk server is used for transmitting the authority management and control information to the corresponding network disk terminal through the notification server so as to update the local authority management and control information. The invention can improve the efficiency and success rate of network disk terminal file synchronization.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a file synchronization system and method of a network disk terminal.
Background
The network disk, also called network hard disk, network U disk and cloud disk, is an online storage service based on a network. The network disk provides the document management functions of storing, sharing, accessing, backing up and the like of the files for the user. The user can manage and edit the files in the network disk through the Internet.
In order to facilitate the user to directly access the latest files on the server from the local, the terminal synchronization function is provided for both the public network cloud disk (such as Dropbox, mega, iCloud, hundred-degree network disk and the like) and the private cloud disk (NextCloud, seafile and the like), and the function can timely submit local changes of the user to the remote server (called uploading), and timely synchronize the changes of the remote server to the local (called downloading), so that the efficiency of the user to access the network disk is greatly improved.
The cloud disk is particularly suitable for centralized storage and sharing of files, so that the cloud disk is widely applied to enterprises. However, because the enterprise has more severe document authority management and more frequent multi-user cooperation scenes compared with the personal network disk, when the network disk terminal synchronization technology is applied to the enterprise-level environment, synchronization failure caused by authority change or concurrent access file locking is easy to occur, particularly uploading process, at this time, manual intervention is required to be performed at a high probability or abnormality waiting to disappear automatically (for example, the target file is locked and then waiting for other people to unlock) is required, the efficiency of using the network disk by a user is influenced, and bad use experience is brought.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a file synchronization system and method of a network disk terminal, which can improve the efficiency and success rate of the file synchronization of the network disk terminal.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
a file synchronization system for a network disk terminal, comprising: the network disk terminal is connected with the network disk server and the notification server respectively, and the notification server is connected with the network disk server through a network.
The network disk terminal comprises a file change detection component, an operation recording component, a permission management and control component and an uploading and downloading capability component. The file change detection component is used for detecting whether the synchronous file catalogue of the network disk terminal is changed or not by comparing the version numbers of the synchronous file catalogues of the network disk terminal and the network disk server; the right management and control component is used for managing and controlling the information of the right synchronized by the network disk server; the operation recording component is used for recording unprocessed file change events;
the uploading and downloading capability component is used for uploading the local change file and downloading the change file of the network disk server, so that the files of the network disk terminal and the network disk server are kept synchronous.
The network disk server is used for distributing file synchronization rights to the network disk terminal, generating corresponding rights management and control information and sending the corresponding rights management and control information to the notification server.
The notification server is used for transmitting the authority management and control information to the corresponding network disk terminal so as to update the local authority management and control information.
Further, the rights management information includes: readable rights, writable rights, downloadable rights and file locking identification information.
Correspondingly, the invention also discloses a file synchronization method of the network disk terminal, which comprises the following steps:
distributing file synchronization rights to a network disk terminal through a network disk server, generating corresponding rights management and control information and sending the corresponding rights management and control information to a notification server;
issuing authority management and control information to a corresponding network disk terminal through a notification server;
after receiving the authority control information, the network disk terminal updates the authority control information;
when a user operates the synchronous directory file on the network disk terminal, the network disk terminal performs operation identification and authority checking, and generates and stores an operation record of the synchronous directory file after the authority checking is passed;
extracting an operation record of the synchronous directory file, and calculating a version number of the synchronous directory file according to a preset algorithm;
confirming whether the directory file is changed according to the version number of the synchronous directory file;
when the directory file is changed, uploading the changed directory file and related data to a network disk server for file synchronization updating.
Further, the network disk terminal performs operation identification and authority check, including:
monitoring and operation identification are carried out through a file change detection component;
judging whether the current file operation is allowed to be executed or not by combining the authority control information according to the user name, the file path and the file operation through the authority control component;
if the file operation authority is provided, corresponding file operation is carried out, and after the operation is finished, the operation record of the synchronous directory file is recorded in the database in an additional mode by the operation record component.
Further, the extracting the operation record of the synchronous directory file, calculating the version number of the synchronous directory file according to a preset algorithm, includes:
reading an operation record of a synchronous directory file which is not processed currently from a database through an uploading and downloading component;
acquiring the changed synchronous directory file and the structure information thereof according to the operation record of the synchronous directory file;
and calculating the checksum of the changed synchronous directory file by using a preset algorithm according to the changed synchronous directory file and the structural information thereof, and marking the checksum as the changed version number.
Further, the determining whether the directory file is changed according to the version number of the synchronous directory file includes:
comparing the basic version number of the synchronous directory file with the changed version number;
if the directory files are consistent, the directory files are not changed, and the operation is ended;
if not, the directory file sends the change.
Further, the uploading the changed directory file and related data to the network disk server to perform file synchronization update includes:
submitting the changed version number and the structure information of the changed synchronous directory file to a network disk server;
the network disk server performs authority checking according to the submitted information, and returns a checking result to the network disk terminal after the authority checking is passed;
and uploading the changed synchronous directory file to the network disk server by the network disk terminal, submitting the change confirmation information to the network disk server after the uploading is finished, and updating the corresponding basic version number.
Further, the calculating the checksum of the changed synchronous directory file according to the changed synchronous directory file and the structure information thereof by using a preset algorithm includes:
mapping the changed synchronous directory file into a characteristic file, and calculating a checksum based on the content of the characteristic file by using an SHA-1 algorithm or an MD5 algorithm.
Further, the mapping the changed synchronous directory file to a feature file includes:
generating a file or a directory entry according to the changed synchronous directory file and the structure information thereof;
storing a set of entries of a file or directory in a feature file;
the entry is used for recording the checksum calculated based on the subdirectory or file content under the current directory using SHA-1 algorithm or MD5 algorithm as its ID information, and also for recording the relevant data information.
Further, the related data information includes:
name of subdirectory or file, entry type, file modification time, file modifier and file size;
wherein, the entry type takes a value of 0 or 1,1 represents a subdirectory, and 0 represents a file.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a file synchronization system and method of a network disk terminal, which utilizes a network disk server to distribute file synchronization rights to the network disk terminal through a notification server, so that the network disk terminal firstly performs rights check when operating a synchronous directory file, and after the checking is passed, a synchronous uploading process is started, thereby effectively avoiding synchronization failure caused by rights. In the synchronous uploading process, the changed version number is calculated by utilizing the synchronous directory file, and the change of the directory file is confirmed by adopting a version number comparison mode, so that the change identification efficiency and accuracy of the synchronous directory file are improved, and further, the efficiency and success rate of network disk terminal file synchronization can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a system configuration diagram of an embodiment of the present invention.
Fig. 2 is a flow chart of a method of an embodiment of the present invention.
Fig. 3 is a schematic view of a directory structure of a modified synchronized directory file according to an embodiment of the present invention.
In the figure, 1, a network disk terminal; 2. a network disk server; 3. notifying a server; 4. a document change detection assembly; 5. an operation recording assembly; 6. a rights management and control component; 7. uploading and downloading the capability component.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
The file synchronization system of the network disk terminal shown in fig. 1 includes: the network disk terminal 1, the network disk server 2 and the notification server 3, wherein the network disk terminal 1 is respectively connected with the network disk server 2 and the notification server 3 in a network manner, and the notification server 3 is connected with the network disk server 2 in a network manner.
The network disk terminal 1 comprises a file change detection component 4, an operation recording component 5, a right management and control component 6 and an uploading and downloading capability component 7.
The file change detection component 4 is used for detecting whether the synchronous file catalogue of the network disk terminal is changed or not by comparing the version numbers of the synchronous file catalogues of the network disk terminal and the network disk server; the authority control component 6 is used for controlling the authority information synchronized by the network disk server 2; the operation recording component 5 is used for recording unprocessed file change events;
the upload/download capability component 7 is used for uploading the local change file and downloading the change file of the network disk server 2, so that the files of the network disk terminal 1 and the network disk server 2 are kept synchronous.
The network disk server 2 is configured to allocate a file synchronization authority to the network disk terminal, generate corresponding authority management and control information, and send the information to the notification server 3. The authority management and control information comprises readable, writable, downloadable, whether the file is locked or not and the like.
The notification server 3 is configured to send the rights management information to the corresponding network disk terminal 1, so as to update the local rights management information.
Correspondingly, as shown in fig. 2, the invention also discloses a file synchronization method of the network disk terminal, which comprises the following steps:
s1: and distributing file synchronization rights to the network disk terminal through the network disk server, generating corresponding rights management and control information and sending the corresponding rights management and control information to the notification server.
S2: and issuing the authority management and control information to the corresponding network disk terminal through the notification server.
S3: and after the network disk terminal receives the authority control information, updating the authority control information.
By way of example, the above steps may be implemented using the following procedure:
firstly, the network disk server transmits updated authority management and control information to the notification server, and the notification server transmits the authority management and control information to an authority management and control component of the network disk terminal to update local authority management and control information. The authority management and control component performs local authority checking, and updates the local authority after the checking is passed.
S4: when the user operates the synchronous directory file on the network disk terminal, the network disk terminal performs operation identification and authority checking, and generates and stores an operation record of the synchronous directory file after the authority checking is passed.
In the specific embodiment, firstly, monitoring and operation identification are carried out through a file change detection component; then, judging whether the current file operation is allowed to be executed or not by combining the authority management and control information according to the user name, the file path and the file operation through the authority management and control component; if the file operation authority is provided, corresponding file operation is carried out, and after the operation is finished, the operation record of the synchronous directory file is recorded in the database in an additional mode by the operation record component.
S5, extracting operation records of the synchronous directory file, and calculating the version number of the synchronous directory file according to a preset algorithm.
In the specific embodiment, firstly, an operation record of a synchronous directory file which is not processed currently is read from a database through an uploading and downloading component; then, acquiring the changed synchronous directory file and the structure information thereof according to the operation record of the synchronous directory file; and finally, calculating the checksum of the changed synchronous directory file by using a preset algorithm according to the changed synchronous directory file and the structural information thereof, and marking the checksum as the changed version number.
S6, confirming whether the directory file is changed according to the version number of the synchronous directory file.
Specifically, the basic version number of the synchronous directory file is compared with the version number after the change; if the directory files are consistent, the directory files are not changed, and the operation is ended. If not, the directory file sends the change.
And S7, when the directory file is changed, uploading the changed directory file and related data to the network disk server to perform file synchronization updating.
In a specific embodiment, first, the version number after the change and the structure information of the synchronized directory file after the change are submitted to the network disk server. At this time, the network disk server performs authority check according to the submitted information, and returns the check result to the network disk terminal after the authority check is passed. And finally, uploading the changed synchronous directory file to a network disk server by the network disk terminal, submitting change confirmation information to the network disk server after uploading is finished, and updating the corresponding basic version number.
As an example, in step S5, the calculating, according to the changed synchronous directory file and the structure information thereof, the checksum of the changed synchronous directory file using a preset algorithm includes:
mapping the changed synchronous directory file into a characteristic file, and calculating a checksum based on the content of the characteristic file by using an SHA-1 algorithm or an MD5 algorithm.
The mapping method of the feature file comprises the following steps:
generating a file or a directory entry according to the changed synchronous directory file and the structure information thereof;
storing a set of entries of a file or directory in a feature file;
the entry is used for recording the checksum calculated based on the subdirectory or file content under the current directory using SHA-1 algorithm or MD5 algorithm as its ID information, and also for recording the relevant data information.
Related data information, comprising: name of subdirectory or file, entry type, file modification time, file modifier and file size; wherein, the entry type takes a value of 0 or 1,1 represents a subdirectory, and 0 represents a file.
By way of example, the mapping process of the profile is described as follows:
FIG. 3 provides a directory structure of a changed synchronized directory file, based on which the files in the signature file are described in the following manner:
{
"file_id" is a checksum generated by SHA-1 calculation based on file content
}
The directories in the profile are described as follows:
{
"entries" set of entries
}
The entries under the directory are a collection of subdirectories or files, each described using the following approach:
{
"id": file-id or dir-id,
"name": directory or file name,
"mode" 0 or 1,0 means that file 1 means a directory
"mtime" means file modification time, directory not filled
"modifier" means the file modifier,
size of file, unit bytes
}
Assume that the checksums for 1.Pdf, 2.Pdf, and 3.Pdf are: e40fd308802149c55693ea34642bda6ba4144e96, 8112803b7a72ba8fcbe7de3a2a3f3cec00fa9e80, 193f789ff7aba633d469ea8260c6a39b39099482.
The corresponding content of the catalog plan is as follows, with the corresponding sizes being 1296955, 320716 and 247968:
{
"entries": [
{
"id": "8112803b7a72ba8fcbe7de3a2a3f3cec00fa9e80",
"name": "2.pdf",
"mode": 0,
"mtime": 1669881082,
"modifier": "tester",
"size": 320716
},
{
"id": "193f789ff7aba633d469ea8260c6a39b39099482",
"name": "3.pdf",
"mode": 0,
"mtime": 1669882082,
"modifier": "tester",
"size": 247968
}
]
}
the checksum is generated for this content using the SHA-1 algorithm as:
c10b156363e0bd4dab797c2652bc93e27448f627。
it is taken as dir-id of directory plan.
According to the same algorithm, the content of the root directory is obtained as follows:
{
"entries": [
{
"id": "0000000000000000000000000000000000000000",
"name": "empty",
"mode": 1
},
{
"id": "e40fd308802149c55693ea34642bda6ba4144e96",
"name": "1.pdf",
"mode": 0,
"mtime": 1669881082,
"modifier": "tester",
"size": 320716
},
{
"id": "61dd4df6fb2bb4745f95cadda5b3471142d91719",
"name": "plan",
"mode": 1
}
]
}
the corresponding dir-id is 5ff7a9515f99cc227a7132b6c3b7a4e872e682e7, and the id of this root directory can be used as the version number of the changed synchronized directory file.
From the above, it can be seen that a version number represents a snapshot of the file system at a certain point in time. The server end combines the version number and the file and directory structure information to judge whether the terminal has update and which update is made, and then the update is combined and changed to the network disk server to complete one-time synchronization of the network disk terminal.
The file synchronization system and method of the network disk terminal provided by the invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. A file synchronization system for a network disk terminal, comprising: the network disk terminal is connected with the network disk server and the notification server through the network respectively, and the notification server is connected with the network disk server through the network;
the network disk terminal comprises a file change detection component, an operation recording component, a right management and control component and an uploading and downloading capability component;
the file change detection component is used for detecting whether the synchronous file catalogue of the network disk terminal is changed or not by comparing the version numbers of the synchronous file catalogues of the network disk terminal and the network disk server;
the right management and control component is used for managing and controlling the information of the right synchronized by the network disk server;
the operation recording component is used for recording unprocessed file change events;
the uploading and downloading capability component is used for uploading the local change file and downloading the change file of the network disk server so that the files of the network disk terminal and the network disk server are kept synchronous;
the network disk server is used for distributing file synchronization rights to the network disk terminal, generating corresponding rights management and control information and sending the corresponding rights management and control information to the notification server;
the notification server is used for transmitting the authority management and control information to the corresponding network disk terminal so as to update the local authority management and control information.
2. The file synchronization system of a network disk terminal according to claim 1, wherein the rights management information includes: readable rights, writable rights, downloadable rights and file locking identification information.
3. The file synchronization method of the network disk terminal is characterized by comprising the following steps of:
distributing file synchronization rights to a network disk terminal through a network disk server, generating corresponding rights management and control information and sending the corresponding rights management and control information to a notification server;
issuing authority management and control information to a corresponding network disk terminal through a notification server;
after receiving the authority control information, the network disk terminal updates the authority control information;
when a user operates the synchronous directory file on the network disk terminal, the network disk terminal performs operation identification and authority checking, and generates and stores an operation record of the synchronous directory file after the authority checking is passed;
extracting an operation record of the synchronous directory file, and calculating a version number of the synchronous directory file according to a preset algorithm;
confirming whether the directory file is changed according to the version number of the synchronous directory file;
when the directory file is changed, uploading the changed directory file and related data to a network disk server for file synchronization updating.
4. A method for synchronizing files of a network disk terminal according to claim 3, wherein the network disk terminal performs operation identification and authority check, comprising:
monitoring and operation identification are carried out through a file change detection component;
judging whether the current file operation is allowed to be executed or not by combining the authority control information according to the user name, the file path and the file operation through the authority control component;
if the file operation authority is provided, corresponding file operation is carried out, and after the operation is finished, the operation record of the synchronous directory file is recorded in the database in an additional mode by the operation record component.
5. The file synchronization method of the network disk terminal according to claim 3, wherein the extracting the operation record of the synchronization directory file, calculating the version number of the synchronization directory file according to a preset algorithm, comprises:
reading an operation record of a synchronous directory file which is not processed currently from a database through an uploading and downloading component;
acquiring the changed synchronous directory file and the structure information thereof according to the operation record of the synchronous directory file;
and calculating the checksum of the changed synchronous directory file by using a preset algorithm according to the changed synchronous directory file and the structural information thereof, and marking the checksum as the changed version number.
6. The file synchronization method of the network disk terminal according to claim 5, wherein said determining whether the directory file is changed according to the version number of the synchronized directory file comprises:
comparing the basic version number of the synchronous directory file with the changed version number;
if the directory files are consistent, the directory files are not changed, and the operation is ended;
if not, the directory file sends the change.
7. The method for synchronizing files of a network disk terminal according to claim 6, wherein uploading the changed directory file and related data to a network disk server for file synchronization update comprises:
submitting the changed version number and the structure information of the changed synchronous directory file to a network disk server;
the network disk server performs authority checking according to the submitted information, and returns a checking result to the network disk terminal after the authority checking is passed;
and uploading the changed synchronous directory file to the network disk server by the network disk terminal, submitting the change confirmation information to the network disk server after the uploading is finished, and updating the corresponding basic version number.
8. The file synchronization method of the network disk terminal according to claim 5, wherein the calculating the checksum of the changed synchronous directory file using a preset algorithm according to the changed synchronous directory file and the structure information thereof comprises:
mapping the changed synchronous directory file into a characteristic file, and calculating a checksum based on the content of the characteristic file by using an SHA-1 algorithm or an MD5 algorithm.
9. The method for synchronizing files of a network disk terminal according to claim 8, wherein mapping the changed synchronized directory file into a profile comprises:
generating a file or a directory entry according to the changed synchronous directory file and the structure information thereof;
storing a set of entries of a file or directory in a feature file;
the entry is used for recording the checksum calculated based on the subdirectory or file content under the current directory using SHA-1 algorithm or MD5 algorithm as its ID information, and also for recording the relevant data information.
10. The file synchronization method of a network disk terminal according to claim 9, wherein the related data information includes:
name of subdirectory or file, entry type, file modification time, file modifier and file size;
wherein, the entry type takes a value of 0 or 1,1 represents a subdirectory, and 0 represents a file.
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