CN113961149B - Polymorphic data storage system and method for electric power information system - Google Patents
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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Abstract
The invention discloses a polymorphic data storage system and a storage method of an electric power information system, wherein polymorphic data files are regarded as large binary files to be sliced, sliced data are stored on a cloud server to generate data slice information description, file abstracts are generated based on slice information and stored in a block chain, so that the storage under a data ontology chain and the storage on a data meta-information chain are realized, the polymorphic data processing complexity of the electric power information system is simplified, and the high efficiency, the real-time performance and the safety of data storage and transmission are improved.
Description
Technical Field
The invention relates to the technical field of computer networks, in particular to the technical field of data storage.
Background
Along with the continuous deepening of the informatization process of the power information system, the data types related to the power business system are more and more, and the total data amount is more and more. The large amount of heterogeneous data brings a series of problems to the data sharing and efficient circulation of the power information system, and the current simple centralized data sharing mode is more and more difficult to meet the requirements of safe, reliable and efficient data sharing and storage.
The existing storage mode mainly comprises centralized storage and blockchain storage:
1. centralized storage defect
The centralized storage is the simplest data storage strategy, and polymorphic data of the traditional power grid business system adopts a centralized storage method such as a database, cloud storage and the like. As traffic expands, centralized storage faces some challenges and problems.
(1) Multi-source isomerism. The heterogeneous environment of centralized storage distributes the various hardware and software components available from suppliers, which can lead to incompatibilities and vulnerabilities in the business system. The power grid business system has heterogeneous data and real-time data, and the processing requirement of the data brings great challenges to cloud computing and the like.
(2) Trust and security issues. Various centrally stored data can be modified by an administrator, a client, an unauthorized user and the like, a large amount of polymorphic data are uploaded every day, privacy leakage risks exist, and technical defects and poor management can cause user information leakage and other problems.
(3) Failure problem. Data stored in the center may be corrupted or altered, potentially resulting in an overall system crash. The user sends the data to the center for storage and processing, which consumes a great deal of network bandwidth and computing resources, and the rapid increase of a great deal of user access may cause problems of service interruption, network delay and the like.
2. Block chain storage defects
A blockchain is a set of linked blocks, which is a chain of blocks that contain information. In blockchains, ledgers are distributed across computer networks. The system is completely transparent and all users can see transactions and changes made on the common blockchain. For such tamper-resistant functionality, many industries are striving to employ blockchains in their processes.
Blockchains are a mixture of computer science mechanisms and cryptographic mechanisms, such as cryptographic hash functions, digital signatures, asymmetric key encryption, scripting and persistent storage, and the like. Essentially, a blockchain is a distributed, redundant, chain-connected, ledger-shared database in which each node in the network is fault tolerant, enabling point-to-point communication. Each block may also include a timestamp, nonce, hash tree named Merkle tree, smart contract script, etc.
Such blockchain techniques are decentralized, i.e., there is no need for a central trusted authority in order to manage the blockchain; instead, multiple entities in the network may create, maintain, and store blockchains themselves. Each entity can verify whether the chain order and data have not been tampered with. Such a decentralized system allows redundancy to any system, resists system failures and network attacks, and solves many of the problems of a centralized system.
Blockchain technology brings with it new trust and collaboration mechanisms. In the field of data storage, the method has great application potential. Blockchain technology also has great potential in the field of data storage. The blockchain may implement decentralised storage, the application of which is similar to distributed storage. However, writing various polymorphic data in the power grid business system directly into the blockchain will cause a lot of problems for the data storage and synchronization of the whole blockchain.
Typically, each node on the blockchain will store all of the transaction/storage data, but it is uneconomical to have each node store all of the data, which would occupy a large amount of storage resources. Over time, the storage space required to store the entire blockchain will be enormous. The full copy data storage mechanism commonly used in existing blockchains is a barrier to system scalability.
Disclosure of Invention
The invention aims to: therefore, the invention provides a polymorphic data storage system and a polymorphic data storage method of an electric power information system, which solve the problem of how to improve the reliability and the high efficiency of data interaction and sharing.
The technical scheme is as follows: in order to achieve the purpose of the invention, the power information system multi-state data storage system provided by the invention can adopt the following technical scheme:
a power information system multi-state data storage system, comprising:
the data conversion module is used for reading the file data in a binary form and converting the file data into a large binary file BBF; dividing the BBF into a plurality of small data slices,
the small data fragment storage module is used for storing the small data fragments and generating small data fragment information, and comprises a HASH value of the small data fragments, a data sequence number of the small data fragments in the file data, the length (in bytes) of the small data fragments and storage addresses of the small data fragments;
the multi-state data information generation module is used for aggregating the file Hash value of the file data, the number of all small data fragments and the information of each small data fragment to form multi-state data information description of the multi-state data file, and storing the multi-state data information to the index server;
the data information uplink module is used for converting the polymorphic data information into uplink storage information, and the uplink storage information comprises a file name, a file Hash value and an address corresponding to the description of the polymorphic data information;
the polymorphic data recovery module is used for acquiring complete polymorphic data information description of the data file from the index server through uplink storage information and addresses of polymorphic data information description, downloading and acquiring data slices from the storage server based on small data slicing information, and aggregating the data slices according to the data sequence numbers to reform the data file.
Determining the length L of the small data fragments according to the maximum multiplexing rate; and dividing the small data fragments with the length L according to the length L of the small data fragments.
Furthermore, in the small data fragment storage module, small data fragments are stored in a distributed cloud storage mode.
Furthermore, in the polymorphic data recovery module, the integrity check is carried out on the small data fragments before aggregation, and the integrity check is carried out on the Hash value of the whole file after aggregation.
The method for storing the polymorphic data of the power information system adopts the following technical scheme that the method comprises the following steps:
(1) Reading in file data in a binary form and converting the file data into a large binary file BBF; dividing the BBF into a plurality of small data slices,
(2) Storing small data fragments, and generating small data fragment information, wherein the small data fragment information comprises a HASH value of the small data fragments, a data sequence number of the small data fragments in the file data, the length (in bytes) of the small data fragments and a storage address of the small data fragments;
(3) Aggregating the file Hash value, the number of all small data fragments and the small data fragment information of the file data to form polymorphic data information description of polymorphic data files, and storing the polymorphic data information to an index server;
(4) Converting the polymorphic data information into uplink storage information, wherein the uplink storage information comprises file names, file Hash values and addresses corresponding to the description of the polymorphic data information;
(5) And acquiring complete polymorphic data information description of the data file from the index server through the uplink storage information and the address of the polymorphic data information description, downloading and acquiring the data slice from the storage server based on the small data slicing information, and aggregating the data slice according to the data sequence number to reform the data file.
Further, in the step (1), determining the length L of the small data fragment according to the maximum multiplexing rate; and dividing the small data fragments with the length L according to the length L of the small data fragments.
In the step (2), the small data fragments are stored in a distributed cloud storage mode.
Furthermore, the integrity of the small data fragments is checked before aggregation, and the integrity of the Hash value of the whole file is checked after aggregation.
The beneficial effects are that: compared with the prior art, in the technical scheme of the polymorphic data storage system and the corresponding storage method of the power information system, the advantages of block chain and cloud storage are combined, the storage under a data body chain is realized, the storage is carried out on a data element information chain, the polymorphic data processing complexity of the power information system is simplified, the polymorphic data storage system is a general storage solution which has the advantages of reliability, reliability and expandability and efficiency, and the reliability and the high efficiency of data interaction and sharing are improved.
Drawings
FIG. 1 is a schematic diagram of a multi-state data storage system of the present invention;
FIG. 2 is a flow chart of the polymorphic data storage method of the present invention up to the time of data information uplink;
FIG. 3 is a flowchart of the polymorphic data recovery step in the polymorphic data storage method of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 3, the present embodiment provides a power information system multi-state data storage system, comprising:
the data conversion module is used for reading the File data in a Binary form and converting the File data into a Binary File (BBF). The BBF is partitioned into small data slices, each of which may be of a different size. Wherein the length L of the small data slices is determined according to the maximum multiplexing rate. Based on the length L of the Small Data fragment, a Small Data fragment (SDS) of L length is partitioned. SDS is stored using distributed cloud storage. For each stored SDS, a HASH value, length and storage address of the fragment is calculated, and small data fragment information (SDSI, small Data Slice Information) is generated therefrom. The data conversion module has the function of collecting polymorphic data such as document type, picture type, audio type, video type, animation type and the like in a power grid service system into a file form. In order to simplify the complexity of data processing, optimize the utilization ratio of storage space, improve the data transmission efficiency, uniformly process according to the form of Big Binary File (BBF), set the size of the fragment as S based on the performance evaluation of the File system, and divide the Big Binary File into a plurality of small data fragments.
And the small data slicing storage module is used for storing the SDS by using distributed cloud storage, calculating HASH values, lengths and storage addresses for each stored SDS, and generating small data slicing information (SDSI, small Data Slice Information). A complete SDSI contains the following information: (1) SdsHash, hash of the data block, store as file name using the name; (2) an SDS seq, a sequence number of the SDS in the file to which it belongs; (3) SdsLength, the length of the data block, in bytes; (4) SDS address, storing an address of the SDS;
the Multi-state data information generation module is used for aggregating the file Hash value of the large file, the number of all small data fragments and the SDSI set of each small data fragment to form Multi-state data information description (MDI, multi-forms Data Information) of the Multi-state data file, and storing the Multi-state data information description in a JSON form to the index server;
the data information uplink module is not suitable for storing a large amount of data on a block chain, and the data on the chain should be as simple as possible, otherwise, the block expansion, the synchronization difficulty and the verification difficulty are caused. Therefore, the invention does not directly store the polymorphic data description information MDI, but further simplifies the data, only comprises the file name, the file Hash value and the address of the corresponding MDI, and forms the uplink storage information (CSI, chain Stored Information). Finally, the CSI information is uplink to finish the storage of the whole polymorphic data file;
and the polymorphic data recovery module is used for recovering polymorphic data. The user firstly reads the CSI information from the blockchain network, then obtains the complete MDI description of the data file from the index server through the MDI address, then obtains the data slice from the storage server based on the SDSI information, carries out integrity check on the SDS before data aggregation, finally aggregates the data slice according to the data sequence number to reform the data file, carries out the integrity check on the Hash value of the whole file, and ensures the integrity of the data.
It should be further noted that, in this embodiment, three types of auxiliary storage information are included: uplink memory information (CSI, chain Stored Information), polymorphic data information (MDI, multi-forms Data Information), small data fragmentation information (SDSI, small Data Slice Information).
CSI is information stored on a blockchain. The blockchain is not suitable for storing a large amount of data, otherwise, the blockiness, the synchronization difficulty and the verification difficulty are caused. Therefore, storing the uplink data is as simple as possible. For this purpose file names, HASH, link addresses etc. are stored in the uplink, which constitute the smallest data set that can be recovered from the extracted source file.
SDSI is information of binary files holding individual small data fragments. It includes the Hash of the small data fragment, the location of the data fragment in the large file, the length of the fragment, and the address where the fragment is stored.
MDI aggregates information about small data fragments. It includes the file Hash value of the large file, the number of all small data fragments, and the SDSI set of each small data fragment.
The three types of auxiliary storage information can be combined with the following table:
an embodiment two, corresponding to the first embodiment, provides a method for storing polymorphic data of a power information system, including the following steps:
(1) For polymorphic data, the polymorphic data are read in a Binary form uniformly and converted into a Binary File (BBF). The BBF is partitioned into data slices, each of which may be of a different size. The length L of the slice is determined according to the maximum multiplexing rate. Based on the length L of the Slice, an L-length Data Slice (SDS, small Data Slice) is divided. SDS is stored using distributed cloud storage. For each stored SDS, the HASH value, length and storage address of the fragment are calculated, and small data fragment information (SDSI, small Data Slice Information) information is generated therefrom.
(2) Small data is stored in pieces. The SDS is stored using distributed cloud storage, HASH values, lengths, and storage addresses are calculated for each of the stored SDS, generating small data fragmentation information (SDSI, small Data Slice Information). A complete SDSI contains the following information: (1) SdsHash, hash of the data block, store as file name using the name; (2) an SDS seq, a sequence number of the SDS in the file to which it belongs; (3) SdsLength, the length of the data block, in bytes; (4) the SDS address stores the address of the SDS.
(3) And generating polymorphic data information. And aggregating the file Hash value of the large file, the number of all small data fragments and the SDSI set of each small data fragment to form a polymorphic data information description (MDI, multi-forms Data Information) of the polymorphic data file, and storing the polymorphic data information description in a JSON form to an index server.
(4) The data information is uplink. The blockchain is not suitable for storing a large amount of data, and the data on the chain should be as simple as possible, otherwise, the blockexpansion, the synchronization difficulty and the verification difficulty are caused. Therefore, the invention does not directly store the polymorphic data description information MDI, but further simplifies the data, only comprises the file name, the file Hash value and the address of the corresponding MDI, and forms the uplink storage information (CSI, chain Stored Information). And finally, the CSI information is uplink to finish the storage of the whole polymorphic data file.
(5) Polymorphic data recovery. The user firstly reads the CSI information from the blockchain network, then obtains the complete MDI description of the data file from the index server through the MDI address, then obtains the data slice from the storage server based on the SDSI information, performs integrity check, finally aggregates the data slice according to the data sequence number to reform the data file, performs the integrity check through the Hash value of the whole file, and ensures the integrity of the data.
Example III
The present embodiment provides a computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor. And the steps of the polymorphic data storage method of the electric power information system in the second embodiment are realized when the processor executes the computer program.
Example IV
The present embodiment provides a computer-readable storage medium having a computer program stored thereon. Wherein the computer program when executed by the processor performs the steps of the method for storing polymorphic data of the power information system in the second embodiment.
Claims (10)
1. A power information system multi-state data storage system, comprising:
the data conversion module is used for reading the file data in a binary form and converting the file data into a large binary file BBF; dividing the BBF into a plurality of small data slices,
the small data fragment storage module is used for storing small data fragments and generating small data fragment information, and comprises a HASH value of the small data fragments, a data sequence number of the small data fragments in the file data, the lengths of the small data fragments and storage addresses of the small data fragments, wherein the lengths of the small data fragments are in units of bytes;
the multi-state data information generation module is used for aggregating the file Hash value of the file data, the number of all small data fragments and the information of each small data fragment to form multi-state data information description of the multi-state data file, and storing the multi-state data information to the index server;
the data information uplink module is used for converting the polymorphic data information into uplink storage information, and the uplink storage information comprises a file name, a file Hash value and an address corresponding to the description of the polymorphic data information;
the polymorphic data recovery module is used for acquiring complete polymorphic data information description of the data file from the index server through uplink storage information and addresses of polymorphic data information description, downloading and acquiring data slices from the storage server based on small data slicing information, and aggregating the data slices according to the data sequence numbers to reform the data file.
2. The power information system multi-state data storage system according to claim 1, wherein the data conversion module determines the length L of the small data fragment according to the maximum multiplexing rate; and dividing the small data fragments with the length L according to the length L of the small data fragments.
3. The power information system multi-state data storage system according to claim 2, wherein in the small data fragment storage module, small data fragments are stored in a distributed cloud storage mode.
4. The polymorphic data storage system of claim 3, wherein in the polymorphic data recovery module, the integrity check is performed on the small data fragments before aggregation, and the integrity check is performed on the Hash value of the entire file after aggregation.
5. A method for storing polymorphic data in an electric power information system, comprising the steps of:
(1) Reading in file data in a binary form and converting the file data into a large binary file BBF; dividing the BBF into a plurality of small data slices,
(2) Storing small data fragments, and generating small data fragment information, wherein the small data fragment information comprises a HASH value of the small data fragment, a data sequence number of the small data fragment in the file data, a length of the small data fragment and a storage address of the small data fragment, and the length of the small data fragment is in bytes;
(3) Aggregating the file Hash value, the number of all small data fragments and the small data fragment information of the file data to form polymorphic data information description of polymorphic data files, and storing the polymorphic data information to an index server;
(4) Converting the polymorphic data information into uplink storage information, wherein the uplink storage information comprises file names, file Hash values and addresses corresponding to the description of the polymorphic data information;
(5) And acquiring complete polymorphic data information description of the data file from the index server through the uplink storage information and the address of the polymorphic data information description, downloading and acquiring the data slice from the storage server based on the small data slicing information, and aggregating the data slice according to the data sequence number to reform the data file.
6. The method for storing polymorphic data in a power information system according to claim 5, wherein in step (1), the length L of the small data fragment is determined according to the maximum multiplexing rate; and dividing the small data fragments with the length L according to the length L of the small data fragments.
7. The method for storing polymorphic data in a power information system according to claim 5, wherein in step (2), the small data fragments are stored by a distributed cloud storage method.
8. The method for storing polymorphic data in a power information system according to claim 5, wherein in step (5), integrity check is performed on small data fragments before aggregation, and integrity check is performed on Hash values of the entire file after aggregation.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 5 to 8 when the computer program is executed by the processor.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 5 to 8.
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