CN114416883A - Block chain light node data synchronization method, device, equipment and readable storage medium - Google Patents
Block chain light node data synchronization method, device, equipment and readable storage medium Download PDFInfo
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- CN114416883A CN114416883A CN202210100553.9A CN202210100553A CN114416883A CN 114416883 A CN114416883 A CN 114416883A CN 202210100553 A CN202210100553 A CN 202210100553A CN 114416883 A CN114416883 A CN 114416883A
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- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
Abstract
The invention relates to the technical field of block chains, in particular to a block chain light node data synchronization method, a device and equipment and a readable storage medium, wherein the method comprises the following steps: acquiring a block height list sent by a main node; judging whether the local node block height is the same as the main node block height according to the block height table, if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, screening out a plurality of second nodes and sending a data synchronization request to any one of the second nodes; receiving the corresponding second local block data sent by the selected second node, and regularly publishing a block height list through a main node in the domain to enable each node in the domain to automatically update the local block height, thereby achieving the effect of synchronizing the block data of each node in the domain; and the light nodes randomly select the node synchronization data meeting the conditions.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a block chain light node data synchronization method, a block chain light node data synchronization device, a block chain light node data synchronization equipment and a readable storage medium.
Background
In order to speed up the blockchain network, nodes in the network are divided into a plurality of domains, each domain comprises a plurality of light nodes and a master node, the master node represents the domain to participate in consensus and voting of the blockchain network, and the plurality of light nodes in the domain do not participate in the consensus of the blockchain network, so that how to ensure the consistency of the local block data of the plurality of light nodes and the master node becomes an urgent problem to be solved.
Disclosure of Invention
The present invention is directed to a method, an apparatus, a device and a readable storage medium for data synchronization of a blockchain light node, so as to improve the above-mentioned problems.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
in one aspect, an embodiment of the present application provides a data synchronization method for a blockchain light node, where the method is applied to any one light node in a blockchain network, and the method includes: acquiring a block height list sent by a main node, wherein the block height list records the block heights of all nodes in a corresponding domain; judging whether the local node block height is the same as the main node block height according to the block height table, if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, screening out a plurality of second nodes and sending a data synchronization request to any one of the second nodes, wherein the data synchronization request is used for triggering the selected second node to send corresponding second local block data to a corresponding request node, and the second node is a node with the same height as the main node block in the domain; and receiving the corresponding second local block data sent by the selected second node.
Optionally, after receiving the corresponding second local block data sent by the selected second node, the method further includes:
generating second local account book data according to the local block data and the second local block data;
sending a check request to the master node, wherein the check request comprises a block height value and a corresponding check hash;
and comparing whether the check hash value is the same as the hash value corresponding to the second local account book data, if so, taking the second local account book data as new local block data, and sending the current local block height to the main node so that the main node updates the block height list.
Optionally, sending a data synchronization request to any one of the second nodes, where the data synchronization request is used to trigger the selected second node to send corresponding local block data to a corresponding requesting node, including:
calculating to obtain the height of a block to be supplemented according to the height of a local node block and the height of the main node block;
and generating a data synchronization request according to the height of the block to be supplemented, and sending the data synchronization request to the selected second node so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
In a second aspect, the present embodiment discloses a data synchronization apparatus for a blockchain light node, where the data synchronization apparatus is applied to any one light node in a blockchain network, and the apparatus includes:
the first acquisition module is used for acquiring a block height list sent by the main node, wherein the block height list is recorded with the block heights of all nodes in a corresponding domain;
the first calculation module is used for judging whether the local node block height is the same as the main node block height according to the block height table, screening a plurality of second nodes and sending a data synchronization request to any one of the second nodes if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, wherein the data synchronization request is used for triggering the selected second node to send corresponding second local block data to a corresponding request node, and the second node is a node with the same height as the main node block in the domain;
a first receiving module, configured to receive the corresponding second local block data sent by the selected second node.
Optionally, the first receiving module further includes:
the first calculation unit is used for generating second local account book data according to the local block data and the second local block data;
the second computing unit is used for sending a check request to the main node, wherein the check request comprises a block height value and a corresponding check hash;
and the third calculating unit is used for comparing whether the check hash value is the same as the hash value corresponding to the second local account book data, if so, taking the second local account book data as new local block data, and sending the current local block height to the main node so that the main node updates the block height list.
Optionally, the first computing module includes:
the fourth calculation unit is used for calculating the height of the block to be supplemented according to the height of the local node block and the height of the main node block;
and the fifth calculation unit is used for generating a data synchronization request according to the height of the block to be supplemented and sending the data synchronization request to the selected second node so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
In a third aspect, an embodiment of the present application provides a device for data synchronization of a blockchain light node, where the device includes a memory and a processor.
The memory is used for storing a computer program; the processor is used for implementing the steps of the block chain light node data synchronization method when executing the computer program.
In a fourth aspect, the present application provides a readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above block chain light node data synchronization method.
The invention has the beneficial effects that:
the invention discloses the block height list at regular time through the main node in the domain, so that each node in the domain automatically updates the local block height, and further achieves the effect of synchronizing the block data of each node in the domain;
secondly, when the data of the synchronization area is synchronized, the data nodes to be synchronized can be randomly searched in the nodes meeting the conditions in the domain, instead of always searching the synchronization data of the main node, and further the load of each node server in the domain is uniform.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of a method for synchronizing data of a blockchain light node according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a data synchronization apparatus for a blockchain light node according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a data synchronization apparatus for a blockchain light node according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers or letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1, the present embodiment provides a data synchronization method for a blockchain light node, which is applied to any one light node in a blockchain network, and the method includes step S1, step S2 and step S3.
Step S1, obtaining a block height list sent by a main node, wherein the block height list is recorded with block heights of all nodes in a corresponding domain, one domain can be understood as a minimum unit participating in consensus, a plurality of domains are arranged in a block chain network, each domain comprises a main node and a plurality of light nodes, the transaction in the block chain only needs the main node in the domain to participate in consensus, the rest light nodes can initiate the transaction or synchronize the transaction execution result of the main node, and the execution result is block data;
step S2, judging whether the local node block height is the same as the main node block height according to the block height table, if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, screening a plurality of second nodes, and sending a data synchronization request to any one of the second nodes, wherein the data synchronization request is used for triggering the selected second nodes to send corresponding request nodes to corresponding second local block data, the second nodes are the nodes with the same block height as the main node block in the domain, in the embodiment, the main node in each domain maintains and updates one height list, the light node firstly receives the latest current block height list when synchronizing data, and each block judges whether the local block height is the same as the block height of the main node according to the table, if the data synchronization operation is different, the data synchronization operation is triggered;
secondly, when the synchronization operation is executed, the light node of the data to be synchronized randomly sends a synchronization request to any node (including the light node and the main node) in the domain, the height of which is the same as that of any block of the main node, so that the condition that the main node equipment is overloaded when a plurality of light nodes synchronize data to the main node at the same time is avoided.
In step S2, the data synchronization operation of the light node does not directly copy the entire public ledger data (including multiple block data) of the second node, but adopts partial extraction, and specifically operates as:
s21, calculating to-be-supplemented block height according to the local node block height and the main node block height, wherein the to-be-supplemented block height is a height value corresponding to a plurality of block data lacking in a local account book of the light node;
and S22, generating a data synchronization request according to the height of the block to be supplemented, and sending the data synchronization request to the selected second node so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
And S3, receiving the corresponding second local block data sent by the selected second node.
After step S3, after the light node of the block data to be supplemented receives the second local block data, the authenticity of the data needs to be checked, and the specific checking step includes:
s4, generating second local account book data according to the local block data and the second local block data;
s5, sending a verification request to the main node, wherein the verification request comprises a block height value and a corresponding verification hash, and the verification hash is a hash value corresponding to local account book data corresponding to the block height value;
and S6, comparing whether the hash value corresponding to the verification hash and the second local account book data is the same or not, if so, taking the second local account book data as new local block data, and sending the current local block height to the main node so that the main node updates the block height list.
In this embodiment, the light node of the block data to be supplemented has a verification mode after receiving the second local block data, in which the second local block data is combined with the local block data to generate second local account book data, and the authenticity of the second local block data is determined by verifying whether the hash value of the second local account book data is the same as the verification hash.
Example 2
As shown in fig. 2, the present embodiment provides a data synchronization apparatus for a blockchain light node, which is applied to any one light node in a blockchain network, and the apparatus includes a first obtaining module 71, a first calculating module 72, and a first receiving module 73.
A first obtaining module 71, configured to obtain a block height list sent by a master node, where the block height list records block heights of all nodes in a corresponding domain;
a first calculating module 72, configured to determine whether a local node block height is the same as a master node block height according to the block height table, if the local node block height is different from the master node block height and at least one light node with the same height as the master node block exists in the block height list, screen out multiple second nodes, and send a data synchronization request to any one of the second nodes, where the data synchronization request is used to trigger the selected second node to send corresponding second local block data to a corresponding request node, and the second node is a node with the same height as the master node block in the domain;
a first receiving module 73, configured to receive the corresponding second local block data sent by the selected second node.
In this embodiment, the first receiving module 73 further includes:
a first calculation unit 731 for generating second local ledger data from local block data and the second local block data;
a second calculating unit 732, configured to send a check request to the master node, where the check request includes a block height value and a corresponding check hash;
the third calculating unit 733, configured to compare whether the check hash is the same as a hash value corresponding to the second local ledger data, if so, take the second local ledger data as new local block data, and send the current local block height to the master node, so that the master node updates the block height list.
In this embodiment, the first calculating module 72 includes:
a fourth calculating unit 721, configured to calculate a height of a block to be supplemented according to a local node block height and the master node block height;
the fifth calculating unit 722 is configured to generate a data synchronization request according to the height of the block to be supplemented, and send the data synchronization request to the selected second node, so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
It should be noted that, regarding the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated herein.
Example 3
Corresponding to the above method embodiment, the present disclosure further provides a device for synchronizing data of a blockchain light node, where a device for synchronizing data of a blockchain light node described below and a method for synchronizing data of a blockchain light node described above may be referred to correspondingly.
Fig. 3 is a block diagram illustrating a blockchain light node data synchronization apparatus 800 according to an example embodiment. As shown in fig. 3, the electronic device 800 may include: a processor 801, a memory 802. The electronic device 800 may also include one or more of a multimedia component 803, an input/output (I/O) interface 804, and a communications component 805.
The processor 801 is configured to control the overall operation of the electronic device 800, so as to complete all or part of the steps in the above block chain light node data synchronization method. The memory 402 is used to store various types of data to support operation at the electronic device 800, such as instructions for any application or method operating on the electronic device 800 and application-related data, such as contact data, transmitted and received messages, pictures, audio, video, and so forth. The Memory 802 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 803 may include screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 802 or transmitted through the communication component 805. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 804 provides an interface between the processor 801 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the electronic device 800 and other devices. Wireless communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination of one or more of them, so that the corresponding communication component 805 may include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the electronic Device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-mentioned block chain light node data synchronization method.
In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the blockchain light node data synchronization method described above is also provided. For example, the computer readable storage medium may be the memory 802 described above that includes program instructions executable by the processor 801 of the electronic device 800 to perform the blockchain light node data synchronization method described above.
Example 4
Corresponding to the above method embodiment, the present disclosure further provides a readable storage medium, and a readable storage medium described below and a block chain light node data synchronization method described above may be referred to correspondingly.
A readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the block chain light node data synchronization method of the above-mentioned method embodiment.
The readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various other readable storage media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A data synchronization method for a blockchain light node is applied to any one light node in a blockchain network, and the method comprises the following steps:
acquiring a block height list sent by a main node, wherein the block height list records the block heights of all nodes in a corresponding domain;
judging whether the local node block height is the same as the main node block height according to the block height table, if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, screening out a plurality of second nodes and sending a data synchronization request to any one of the second nodes, wherein the data synchronization request is used for triggering the selected second node to send corresponding second local block data to a corresponding request node, and the second node is a node with the same height as the main node block in the domain;
and receiving the corresponding second local block data sent by the selected second node.
2. The method of block chain light node data synchronization of claim 1, wherein after receiving the corresponding second local block data sent by the selected second node, further comprising:
generating second local account book data according to the local block data and the second local block data;
sending a check request to the master node, wherein the check request comprises a block height value and a corresponding check hash;
and comparing whether the check hash value is the same as the hash value corresponding to the second local account book data, if so, taking the second local account book data as new local block data, and sending the current local block height to the main node so that the main node updates the block height list.
3. The method of block chain light node data synchronization of claim 1, wherein sending a data synchronization request to any one of the second nodes, the data synchronization request for triggering the selected second node to send corresponding local block data to a corresponding requesting node, comprises:
calculating to obtain the height of a block to be supplemented according to the height of a local node block and the height of the main node block;
and generating a data synchronization request according to the height of the block to be supplemented, and sending the data synchronization request to the selected second node so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
4. A device for data synchronization of a blockchain light node, the device being applied to any one light node in a blockchain network, the device comprising:
the first acquisition module is used for acquiring a block height list sent by the main node, wherein the block height list is recorded with the block heights of all nodes in a corresponding domain;
the first calculation module is used for judging whether the local node block height is the same as the main node block height according to the block height table, screening a plurality of second nodes and sending a data synchronization request to any one of the second nodes if the local node block height is different from the main node block height and at least one light node with the same height as the main node block exists in the block height list, wherein the data synchronization request is used for triggering the selected second node to send corresponding second local block data to a corresponding request node, and the second node is a node with the same height as the main node block in the domain;
a first receiving module, configured to receive the corresponding second local block data sent by the selected second node.
5. The blockchain light node data synchronization apparatus according to claim 4, wherein the first receiving module further includes:
the first calculation unit is used for generating second local account book data according to the local block data and the second local block data;
the second computing unit is used for sending a check request to the main node, wherein the check request comprises a block height value and a corresponding check hash;
and the third calculating unit is used for comparing whether the check hash value is the same as the hash value corresponding to the second local account book data, if so, taking the second local account book data as new local block data, and sending the current local block height to the main node so that the main node updates the block height list.
6. The blockchain light node data synchronization apparatus according to claim 4, wherein the first calculation module includes:
the fourth calculation unit is used for calculating the height of the block to be supplemented according to the height of the local node block and the height of the main node block;
and the fifth calculation unit is used for generating a data synchronization request according to the height of the block to be supplemented and sending the data synchronization request to the selected second node so that the selected second node sends the block data corresponding to the height of the block to be supplemented to the corresponding request node.
7. A device for synchronizing data of a blockchain light node, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the blockchain light node data synchronization method according to any one of claims 1 to 3 when executing the computer program.
8. A readable storage medium, characterized by: the readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the blockchain light node data synchronization method according to any one of claims 1 to 3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115086350A (en) * | 2022-06-13 | 2022-09-20 | 杭州复杂美科技有限公司 | Block link point data synchronization method, equipment and storage medium |
| CN115860742A (en) * | 2023-02-27 | 2023-03-28 | 北京溪塔科技有限公司 | Data synchronization method, node, storage medium and equipment for light node in block chain |
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2022
- 2022-01-27 CN CN202210100553.9A patent/CN114416883A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115086350A (en) * | 2022-06-13 | 2022-09-20 | 杭州复杂美科技有限公司 | Block link point data synchronization method, equipment and storage medium |
| CN115086350B (en) * | 2022-06-13 | 2024-01-19 | 亿度科创(深圳)有限公司 | Block chain node data synchronization method, equipment and storage medium |
| CN115860742A (en) * | 2023-02-27 | 2023-03-28 | 北京溪塔科技有限公司 | Data synchronization method, node, storage medium and equipment for light node in block chain |
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