CN112187913B - Method and system for realizing consensus based on intelligent contract - Google Patents
Method and system for realizing consensus based on intelligent contract Download PDFInfo
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- CN112187913B CN112187913B CN202011016372.5A CN202011016372A CN112187913B CN 112187913 B CN112187913 B CN 112187913B CN 202011016372 A CN202011016372 A CN 202011016372A CN 112187913 B CN112187913 B CN 112187913B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/133—Protocols for remote procedure calls [RPC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a method and a system for realizing consensus based on intelligent contracts. The method for realizing consensus based on intelligent contracts comprises the following steps: writing an intelligent contract, and setting consensus type data in the intelligent contract; setting a consensus algorithm corresponding to the consensus type data in a node program; when the node program is started, calling the intelligent contract to acquire the consensus type data in the intelligent contract; and executing the consensus algorithm after acquiring the consensus algorithm according to the consensus type data. The technical scheme of the invention solves the technical problem of hard bifurcation on the chain caused by consensus upgrading in the related technology.
Description
Technical Field
The invention relates to the technical field of blockchains, in particular to a method and a system for realizing consensus based on intelligent contracts.
Background
After the new consensus rule is issued, part of nodes which are not upgraded cannot verify the blocks produced by the nodes which are already upgraded, and usually hard bifurcation occurs, wherein the hard bifurcation definition is given by authorities, namely at a certain time point, all nodes need to agree to upgrade, nodes which do not agree to upgrade remain on the original chain, the upgraded nodes continue to run in a new chain, and the front chain and the rear chain are incompatible, so that the hard bifurcation of the blockchain is formed.
While some public chains now have applied the consensus hot plug technique, each upgrade is controversial for the decentralised node, and if there is a consensus divergence from one party to the other, that bifurcation is also necessary.
The existing public chain is upgraded in a common mode, a single common mode is upgraded together with the nodes, and even if some common hot plug technologies exist in the prior common mode, the common mode can be replaced flexibly, however, the selected upgrading mode is upgraded according to the height of a block or through configuration, and the hard bifurcation upgrading problem in the mode of upgrading according to personal will is a pain point which cannot be avoided.
Accordingly, there is a need to provide a new method and system for implementing consensus based on smart contracts to solve the above-mentioned technical problems.
Disclosure of Invention
The invention mainly aims to provide a method for realizing consensus based on intelligent contracts, which aims to solve the technical problem of hard bifurcation on a chain caused by consensus upgrading in the related technology.
In order to achieve the above object, the present invention provides a method for implementing consensus based on intelligent contracts, comprising the following steps:
s10, writing an intelligent contract, and setting consensus type data in the intelligent contract;
specifically, the consensus type data is a global variable function of a consensus type, i.e. a global variable function named consensus type is defined in the smart contract. To implement the get consensus type method in invoking the contract method.
S20, setting a consensus algorithm corresponding to the consensus type data in a node program;
specifically, the consensus algorithm is specific consensus algorithm logic.
When the POA consensus is needed to be realized, an algorithm of PoaConsensu Start () is defined, and the algorithm content is the POA consensus calculation algorithm logic code.
When the VRF consensus needs to be realized, an algorithm of VrfConsensu Start () is defined, and the algorithm content is verifiable random number calculation logic of the VRF.
When other consensus needs to be achieved, so on in the manner described above.
S30, when the node program is started, calling the intelligent contract to acquire the consensus type data in the intelligent contract;
it may be understood that the method for calling the smart contract is the method for obtaining the consensus type in the method for calling the contract in the step S10.
And S40, executing the consensus algorithm after acquiring the consensus algorithm according to the consensus type data.
Specifically, a corresponding consensus implementation call is performed according to the consensus type given by the contract, for example, the obtained consensus type is "POA", and then the poaconsensussstart () algorithm set forth in S20 is called to perform consensus calculation.
Preferably, the method further comprises the following steps:
s50, when the consensus needs to be replaced, respectively and correspondingly converting the consensus type data in the step S10 and the consensus algorithm in the step S20;
s60, issuing a new intelligent contract.
In order to solve the technical problems, the invention also provides a method for realizing consensus based on intelligent contracts, which comprises the following steps:
s01, writing an intelligent contract, defining the consensus type data, and executing a consensus algorithm corresponding to the consensus type data;
in this embodiment, the consensus type data is a global consensus type variable.
If the on-chain data is required to be acquired, a contract and on-chain interactive interface can be defined according to the requirement;
if the VRF is realized, random number consensus calculation can be verified, a global type variable is defined as VRF, a contract method vrfConsensu () is defined, and the output result of the method is the current round of block node coordinates.
S02, defining an interactive block header information acquisition interface on the intelligent contract and the chain so as to acquire the previous block data to participate in the calculation of the current result.
Because the VRF consensus algorithm needs to acquire the last block data to participate in the current result calculation, an acquire block header information interface getblock bynumber () for contract and on-chain interaction needs to be defined.
S03, before the node packages the transaction and generates the block, calling the intelligent contract to acquire the node coordinates of the current node to judge whether the current node blocks;
s04, when the node leaves the block, transaction packaging is carried out to generate a block.
Preferably, the method further comprises the following steps:
s05, when the consensus needs to be replaced, respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01;
s06, issuing a new intelligent contract.
In order to solve the technical problem, the invention also provides a system for realizing consensus based on intelligent contracts, which comprises:
the writing module is used for writing intelligent contracts and setting consensus type data in the intelligent contracts;
specifically, the consensus type data is a global variable function of a consensus type, i.e. a global variable function named consensus type is defined in the smart contract. To implement the get consensus type method in invoking the contract method.
The setting module is used for setting a consensus algorithm corresponding to the consensus type data in a node program;
specifically, the consensus algorithm is specific consensus algorithm logic.
When the POA consensus is needed to be realized, an algorithm of PoaConsensu Start () is defined, and the algorithm content is the POA consensus calculation algorithm logic code.
When the VRF consensus needs to be realized, an algorithm of VrfConsensu Start () is defined, and the algorithm content is verifiable random number calculation logic of the VRF.
When other consensus needs to be achieved, so on in the manner described above.
The calling module is used for calling the intelligent contract when the node program is started so as to acquire the consensus type data in the intelligent contract;
it may be understood that the method for calling the smart contract is the method for obtaining the consensus type in the method for calling the contract in the step S10.
And the execution module is used for executing the consensus algorithm after acquiring the consensus algorithm according to the consensus type data.
Specifically, a corresponding consensus implementation call is performed according to the consensus type given by the contract, for example, the obtained consensus type is "POA", and then the poaconsensussstart () algorithm set forth in S20 is called to perform consensus calculation.
Preferably, the method further comprises:
the replacing module is used for respectively and correspondingly converting the consensus type data in the step S10 and the consensus algorithm in the step S20 when the consensus needs to be replaced;
and issuing a new intelligent contract.
In order to solve the technical problem, the invention also provides a system for realizing consensus based on intelligent contracts, which comprises:
the compiling and executing module is used for compiling intelligent contracts, defining the consensus type data and executing a consensus algorithm corresponding to the consensus type data;
in this embodiment, the consensus type data is a global consensus type variable.
If the on-chain data is required to be acquired, a contract and on-chain interactive interface can be defined according to the requirement;
if the VRF is realized, random number consensus calculation can be verified, a global type variable is defined as VRF, a contract method vrfConsensu () is defined, and the output result of the method is the current round of block node coordinates.
And the definition module is used for defining an acquired block header information interface interacted on the intelligent contract and the chain so as to acquire the previous block data to participate in the calculation of the current result.
Because the VRF consensus algorithm needs to acquire the last block data to participate in the current result calculation, an acquire block header information interface getblock bynumber () for contract and on-chain interaction needs to be defined.
The calling module is used for calling the intelligent contract before the node packages the transaction and generates the block so as to acquire the node coordinates of the current node to judge whether the current node is blocked;
and the packing module is used for carrying out transaction packing to generate a block when the node is out of the block.
Preferably, the method further comprises:
the replacing module is used for respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01 when the consensus needs to be replaced;
and issuing a new intelligent contract.
The present invention provides a method and system for implementing a consensus based on smart contracts, which does not require definition of the contract consensus (Consensus Conract). Contract consensus is a method that can integrate the realization of consensus into contracts; and the contracts can be participated in a brand new consensus mode of consensus scheduling.
The method can realize the consensus hot plug technology, can solve the problem of hard bifurcation pain points which cannot be avoided by upgrading the existing consensus technology, and has good consensus efficiency.
Has the following characteristics:
the first contract consensus has the flexibility of a common intelligent contract issuing mechanism, is issued based on a similar issuing transaction form, and takes effect through the whole network broadcasting;
second, the contract must participate in the consensus flow of the node, and the node without calling the contract cannot normally operate.
Through the invention, the common-knowledge hot plug technology can be realized by issuing intelligent contracts; but also can prevent the hard bifurcation problem caused by consensus upgrading, so as to solve the pain point which cannot be avoided by the prior consensus technology.
The invention provides a strategy and a method for realizing consensus based on intelligent contracts, which are designed by combining the consensus and the intelligent contracts to solve the pain points of the prior consensus technology, realize the consensus hot plug technology and prevent the hard bifurcation on the chain caused by the consensus upgrading
By summarizing the implementation characteristics of the existing consensus technology, although the consensus mode is different from the design idea, the common characteristic exists from the aspect of the technical expression, namely the consensus implementation mode depends on the functions on the chain, and exists with the original functions of the nodes, the consensus is that the nodes are realized, each upgrade of the consensus is established on the basis of the node upgrade, and each upgrade has personal willingness of the node mastering party to participate.
If the problem is to be solved, a consensus implementation method capable of realizing consensus hot plug to ensure flexible consensus replacement and preventing the problem of hard bifurcation on a chain is needed, and the technology is the main problem to be solved by the invention.
Drawings
FIG. 1 is a workflow diagram of a first embodiment of a method for implementing consensus based on smart contracts provided by the present invention;
FIG. 2 is an architecture diagram of nodes and consensus contracts in a first embodiment of a method for implementing consensus based on smart contracts;
FIG. 3 is a workflow diagram of a second embodiment of a method for implementing consensus based on smart contracts provided by the present invention;
FIG. 4 is an architecture diagram of nodes and consensus contracts in a second embodiment of a method for implementing consensus based on smart contracts;
FIG. 5 is a block diagram of a first embodiment of a system for implementing consensus based on smart contracts provided by the present invention;
FIG. 6 is a block diagram of a second embodiment of a system for implementing consensus based on smart contracts, provided by the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a method for realizing consensus based on intelligent contracts.
First embodiment
Referring to fig. 1-2 in combination, in order to achieve the above object, a method 100 for implementing consensus based on smart contracts according to a first embodiment of the present invention includes the following steps:
s10, writing an intelligent contract, and setting consensus type data in the intelligent contract;
specifically, the consensus type data is a global variable function of a consensus type, i.e. a global variable function named consensus type is defined in the smart contract. To implement the get consensus type method in invoking the contract method.
S20, setting a consensus algorithm corresponding to the consensus type data in a node program;
specifically, the consensus algorithm is specific consensus algorithm logic.
When the POA consensus is needed to be realized, an algorithm of PoaConsensu Start () is defined, and the algorithm content is the POA consensus calculation algorithm logic code.
When the VRF consensus needs to be realized, an algorithm of VrfConsensu Start () is defined, and the algorithm content is verifiable random number calculation logic of the VRF.
When other consensus needs to be achieved, so on in the manner described above.
S30, when the node program is started, calling the intelligent contract to acquire the consensus type data in the intelligent contract;
it may be understood that the method for calling the smart contract is the method for obtaining the consensus type in the method for calling the contract in the step S10.
And S40, executing the consensus algorithm after acquiring the consensus algorithm according to the consensus type data.
Specifically, a corresponding consensus implementation call is performed according to the consensus type given by the contract, for example, the obtained consensus type is "POA", and then the poaconsensussstart () algorithm set forth in S20 is called to perform consensus calculation.
The method 100 of implementing consensus based on smart contracts further includes the steps of:
s50, when the consensus needs to be replaced, respectively and correspondingly converting the consensus type data in the step S10 and the consensus algorithm in the step S20;
s60, issuing a new intelligent contract.
Because of contract whole network broadcasting, common-knowledge upgrading is not participated by human factors, so that the problem of hard bifurcation is solved.
In the first embodiment, the manner of participation of contracts in the consensus scheduling is described, and the operation flow is an operation mode in which a node starts a step of adding and executing contracts, obtains a consensus type by executing contracts, performs consensus selection according to the consensus type, and then performs consensus calculation.
Second embodiment
Referring to fig. 3-4 in combination, the present invention also provides another method 200 for implementing consensus based on smart contracts, comprising the steps of:
s01, writing an intelligent contract, defining the consensus type data, and executing a consensus algorithm corresponding to the consensus type data;
in this embodiment, the consensus type data is a global consensus type variable.
If the on-chain data is required to be acquired, a contract and on-chain interactive interface can be defined according to the requirement;
if the VRF is realized, random number consensus calculation can be verified, a global type variable is defined as VRF, a contract method vrfConsensu () is defined, and the output result of the method is the current round of block node coordinates.
S02, defining an interactive block header information acquisition interface on the intelligent contract and the chain so as to acquire the previous block data to participate in the calculation of the current result.
Because the VRF consensus algorithm needs to acquire the last block data to participate in the calculation of the current result, a block header information acquisition interface GetBuckByNumber ()' of contract and on-chain interaction needs to be defined;
s03, before the node packages the transaction and generates the block, calling the intelligent contract to acquire the node coordinates of the current node to judge whether the current node blocks;
s04, when the node leaves the block, transaction packaging is carried out to generate a block.
The method 200 of implementing consensus based on smart contracts further includes the steps of:
s05, when the consensus needs to be replaced, respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01;
s06, issuing a new intelligent contract.
Because of contract whole network broadcasting, common-knowledge upgrading is not participated by human factors, so that the problem of hard bifurcation is solved.
In the second embodiment, the method of integrating the consensus into the contract is described, and because the contract code is not too heavy, the method only suggests to implement the consensus method based on some relatively light arithmetic logic, and the node performs the corresponding flow operation according to the contract calculation result by calling the contract to perform the consensus calculation and obtain the consensus calculation result.
The invention also provides a system for realizing consensus based on the intelligent contract.
Referring to fig. 5, to achieve the above object, in a first embodiment of the present invention, a system for implementing consensus based on smart contracts includes:
the writing module is used for writing intelligent contracts and setting consensus type data in the intelligent contracts;
specifically, the consensus type data is a global variable function of a consensus type, i.e. a global variable function named consensus type is defined in the smart contract. To implement the get consensus type method in invoking the contract method.
The setting module is used for setting a consensus algorithm corresponding to the consensus type data in a node program;
specifically, the consensus algorithm is specific consensus algorithm logic.
When the POA consensus is needed to be realized, an algorithm of PoaConsensu Start () is defined, and the algorithm content is the POA consensus calculation algorithm logic code.
When the VRF consensus needs to be realized, an algorithm of VrfConsensu Start () is defined, and the algorithm content is verifiable random number calculation logic of the VRF.
When other consensus needs to be achieved, so on in the manner described above.
The calling module is used for calling the intelligent contract when the node program is started so as to acquire the consensus type data in the intelligent contract;
it may be understood that the method for calling the smart contract is the method for obtaining the consensus type in the method for calling the contract in the step S10.
And the execution module is used for executing the consensus algorithm after acquiring the consensus algorithm according to the consensus type data.
Specifically, a corresponding consensus implementation call is performed according to the consensus type given by the contract, for example, the obtained consensus type is "POA", and then the poaconsensussstart () algorithm set forth in S20 is called to perform consensus calculation.
The system for implementing consensus based on intelligent contracts further comprises:
the replacing module is used for respectively and correspondingly converting the consensus type data in the step S10 and the consensus algorithm in the step S20 when the consensus needs to be replaced;
and issuing a new intelligent contract.
Second embodiment
Referring to fig. 6, a second embodiment of the present invention further provides another system for implementing consensus based on smart contracts, including:
the compiling and executing module is used for compiling intelligent contracts, defining the consensus type data and executing a consensus algorithm corresponding to the consensus type data;
in this embodiment, the consensus type data is a global consensus type variable.
If the on-chain data is required to be acquired, a contract and on-chain interactive interface can be defined according to the requirement;
if the VRF is realized, random number consensus calculation can be verified, a global type variable is defined as VRF, a contract method vrfConsensu () is defined, and the output result of the method is the current round of block node coordinates.
And the definition module is used for defining an acquired block header information interface interacted on the intelligent contract and the chain so as to acquire the previous block data to participate in the calculation of the current result.
Because the VRF consensus algorithm needs to acquire the last block data to participate in the calculation of the current result, a block header information acquisition interface GetBuckByNumber ()' of contract and on-chain interaction needs to be defined;
the calling module is used for calling the intelligent contract before the node packages the transaction and generates the block so as to acquire the node coordinates of the current node to judge whether the current node is blocked;
and the packing module is used for carrying out transaction packing to generate a block when the node is out of the block.
The system for implementing consensus based on intelligent contracts further comprises:
the replacing module is used for respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01 when the consensus needs to be replaced;
and issuing a new intelligent contract.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part in the form of a software product stored in a computer readable storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device to enter the method according to the embodiments of the present invention.
In the description of the present specification, the descriptions of the terms "one embodiment," "another embodiment," "other embodiments," or "first through X-th embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, method steps or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (4)
1. A method for implementing consensus based on intelligent contracts, comprising the steps of:
s01, writing an intelligent contract, defining consensus type data, and executing a consensus algorithm corresponding to the consensus type data;
s02, defining an interactive block header information acquisition interface on the intelligent contract and the chain so as to acquire the previous block data to participate in the calculation of the current result;
s03, before the node packages the transaction and generates the block, calling the intelligent contract to acquire the node coordinates of the current node to judge whether the current node blocks;
s04, when the node leaves the block, transaction packaging is carried out to generate a block.
2. The method for implementing consensus based on smart contracts according to claim 1, further comprising the steps of:
s05, when the consensus needs to be replaced, respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01;
s06, issuing a new intelligent contract.
3. A system for implementing consensus based on smart contracts, comprising:
the programming and executing module is used for programming intelligent contracts, defining consensus type data and executing a consensus algorithm corresponding to the consensus type data;
the definition module is used for defining an acquired block header information interface of the intelligent contract and the on-chain interaction so as to acquire the previous block data to participate in the calculation of the current result;
the calling module is used for calling the intelligent contract before the node packages the transaction and generates the block so as to acquire the node coordinates of the current node to judge whether the current node is blocked;
and the packing module is used for carrying out transaction packing to generate a block when the node is out of the block.
4. The system for implementing a consensus based on smart contracts of claim 3, further comprising:
the replacing module is used for respectively and correspondingly converting the consensus type data and the consensus algorithm in the step S01 when the consensus needs to be replaced;
and issuing a new intelligent contract.
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