CN107145521A - A kind of data migration method towards block chain multistage intelligent contract - Google Patents
A kind of data migration method towards block chain multistage intelligent contract Download PDFInfo
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- CN107145521A CN107145521A CN201710230002.3A CN201710230002A CN107145521A CN 107145521 A CN107145521 A CN 107145521A CN 201710230002 A CN201710230002 A CN 201710230002A CN 107145521 A CN107145521 A CN 107145521A
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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
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/214—Database migration support
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
- G06Q20/3825—Use of electronic signatures
Abstract
The invention discloses a kind of data migration method towards block chain multistage intelligent contract.Comprise the following steps：1) for the contract system for there are multiple contracts mutually to call, contract tree shaped model is built；2) data of the migration top layer contract in addition to child node contract address；3) whether node where judging current contract is leaf node；4) dispose the new contract of leaf node and migrate the data of the contract, the contract address of store leaf node；5) Data Migration of all child node contracts is finished, and is disposed new contract migration contract data and is stored the new address of all child node contracts；6) step 3 is repeated) arrive step 5), migrate the contract address parameter of all sub- contracts of top layer contract.When the present invention solves on block chain complicated intelligence contract data migration contract address as parameter can not replacement problem, realize the Data Migration towards block chain multistage intelligent contract.
Description
Technical field
Closed the present invention relates to block chain technology, intelligent contract, caching and multithreading, more particularly to a kind of multistage intelligent
Data migration method when about upgrading.
Background technology
Block chain technology, block chain is a kind of new decentralization agreement, can safely store digital cash and merchandise or it
His data, information can not be forged and distorted, and all nodes of the trade confirmation on block chain on block chain are completed jointly, by altogether
Know algorithm to ensure to safeguard a public account book, all users in memory block chain network on its consistency, block chain
Remaining sum, public account book is visible positioned at any node in memory block, so as to ensure that it can not forge and distort.
Intelligent contract on intelligent contract, block chain refer to be write and compiled by solidity and run with block chain
A string of binary codes, we can realize data storage, read-write and some logics on block chain by intelligent contract
Operation, therefore some applications based on block chain utilize intelligent contract completion.
Caching and multithreading, caching refer to, when program needs to read data, in advance put the data for needing to read
In caching, process priority reads data from caching.Because the speed of service of caching is more many than memory block, so caching can pole
Big faster procedure reads data speed.Multithreading refers to program in operation of some calculating of progress than comparatively dense, using multi-thread
Journey is handled, and makes full use of CPU core calculation, improves CPU efficiency.
The content of the invention
The purpose of the present invention be for existing block chain technology it is not enough there is provided one kind towards block chain multistage intelligent contract
Data migration method.
Due to the characteristic of block chain in itself, after the general block chain application using intelligent contract is reached the standard grade, if to apply
Version requirement need update, it is meant that contract must be redeployed, and generate new contract address.System will be used newly afterwards
Contract, because old data can not be abandoned, be now accomplished by moving to old contract data in new contract.
The purpose of the present invention is to be achieved through the following technical solutions：In the case where not changing block chain contract data,
Ensure safely and efficiently to move to old contract data in new contract, more particularly to have the multistage contract number of call relation
According to migration situation, comprise the following steps：
1) for the intelligent contract system for there are multiple contracts mutually to call, contract data is migrated step by step using tree shaped model,
Father node contract calls child node contract in tree shaped model；
2) contract of top mode, data of the migration top layer contract in addition to child node contract address are disposed；
3) whether node where judging current contract is leaf node, if present node is not leaf node, reads and works as
The contract address of the child node of front nodal point, the judgement is repeated to sub- contract；If present node is leaf node, into step
4)；
4) dispose the new contract of leaf node and migrate the data of the contract, the contract address of store leaf node；
5) all contract nodes are traveled through, if the Data Migration of all child nodes of node is finished where contract, start deployment
New current contract, migrates contract data and stores the new address of all child node contracts；Otherwise, read and moved without completion data
The sub- contract address moved, carries out step 3)；
6) step 3 is repeated) arrive step 5), until node where current contract is top mode, migrate top layer contract
All sub- contracts contract address parameter.
Further, described step 1) in for there is multiple contracts for mutually calling to construct tree shaped model, structure is answered first
The call relation between the clear and definite contract of tree shaped model is made, wherein child node contract method is called in father node contract, one of them
Contract can call many sub- contracts, and a sub- contract can be called by multiple contracts.
Further, described step 2) in, contract can dispose new contract when migrating, and each contract has uniquely
Contract address.Old contract address should be removed during migration top layer contract data, only all child node contract datas are all moved
After shifting is finished, father node contract just starts Data Migration, and the migration of contract address should be based on newly deployed contract.
Further, need to cache private key before calling contract method to migrate contract data, based on block chain in itself
Characteristic, is required for private key to be signed when calling intelligent contract method every time, and private key is generally encrypted as a private key file
In the presence of.It therefore, it can that private key file is decrypted to storage in advance in the buffer, the efficient reading speed based on cache file is called
It is more efficient during contract method.
Further, when migrating contract data, the read-write operation of contract can be constantly performed when being migrated due to contract data,
CPU core number can be made full use of using the method for multithreading.So contract data moving method can support block chain
On the big order of magnitude Data Migration, and ensure in new contract system effectively to use the related data of old contract.
The beneficial effects of the invention are as follows：The present invention constructs contract in the Data Migration towards block chain multistage intelligent contract
Call tree shaped model to come safety transfer contract data, and the technology in migrating data using caching and multithreading, realize
The Data Migration of complicated intelligence contract.For the Data Migration of the general intelligent contract without call relation, way is direct
The Get methods of old contract and the Set methods of new contract is called to complete Data Migration, but for there is the multiple of call relation
The Data Migration of contract, Direct Transfer data can destroy original contract call relation.To ensure contract data and its calling to patrol
The complete newly deployed contract system that moves to is collected, the present invention is adjusted in the migration of multistage intelligent contract data using tree shaped model
The selection of order and transferring content when contract is migrated, and enter one using private key caching and the intelligent contract read-write technology of multithreading
Step improves contract data transport efficiency, accordingly even when being that complicated intelligent contract system can also completely move to new contract system
System is without worrying that its calling logic is destroyed.Asked present invention efficiently solves the Data Migration towards multistage intelligent contract
Topic.
Brief description of the drawings
Fig. 1 is the step flow chart of multistage intelligent contract data moving method of the present invention；
Fig. 2 is the tree shaped model figure of the multistage intelligent contract of the embodiment of the present invention；
Fig. 3 is that the contract data of the embodiment of the present invention migrates specific procedure chart.
Embodiment
The present invention is described in detail below according to the drawings and specific embodiments, the purpose of the present invention and effect will become brighter
It is aobvious.
As shown in figure 1, the inventive method, comprises the following steps：
1) for the intelligent contract system for thering are multiple contracts mutually to call, as shown in Fig. 2 being migrated step by step using tree shaped model
Father node contract calls child node contract in contract data, tree shaped model；
2) contract of top mode, data of the migration top layer contract in addition to child node contract address are disposed；
3) whether node where judging current contract is leaf node, if present node is not leaf node, reads and works as
The contract address of the child node of front nodal point, the judgement is repeated to sub- contract；If present node is leaf node, into step
4)；
4) dispose the new contract of leaf node and migrate the data of the contract, the contract address of store leaf node；
5) all contract nodes are traveled through, if the Data Migration of all child nodes of node is finished where contract, start deployment
New current contract, migrates contract data and stores the new address of all child node contracts；Otherwise, read and moved without completion data
The sub- contract address moved, carries out step 3)；
6) step 3 is repeated) arrive step 5), until node where current contract is top mode, migrate top layer contract
All sub- contracts contract address parameter.
Further, described step 1) in for there is multiple contracts for mutually calling to construct tree shaped model, structure is answered first
The call relation between the clear and definite contract of tree shaped model is made, wherein child node contract method is called in father node contract, one of them
Contract can call many sub- contracts, and a sub- contract can be called by multiple contracts.
Further, described step 2) in, contract can dispose new contract when migrating, and each contract has uniquely
Contract address.Therefore, old contract address, and only all child node contract numbers should be removed when migrating top layer contract data
After all migration is finished, father node contract just starts Data Migration, the migration of contract address should using newly deployed contract as
It is main.
Further, as shown in figure 3, needing to cache private key before contract method is called, the spy based on block chain in itself
Property, it is required for private key to be signed when calling intelligent contract method every time, and private key is generally encrypted and deposited for a private key file
.It therefore, it can that private key file is decrypted to storage in advance in the buffer, the efficient reading speed based on cache file calls conjunction
About method when it is more efficient；
Further, as shown in figure 3, performing contract method using the method for multithreading when migrating contract data, due to
Contract data can constantly perform the read-write operation of contract when migrating, and CPU core can be made full use of using the method for multithreading
Calculation.So contract data moving method can support the Data Migration of the big order of magnitude on block chain, and ensure in new conjunction
The related data of old contract is effectively used about in system.
Illustrate specific embodiment with a specific intelligent contract migration example below：
One Data Migration towards the intelligent contract of multistage block chain of simulation, as shown in Fig. 2 and having two variables in about 1
Contract1Addrs [] and contract2Addrs [] store all and about 2 addresses and all and about 3 ground respectively
Location.Also two variable contract3Addrs [] and contract4Addrs [] store respectively in about 2 all and about 4
Address and all and about 5 addresses.Also variable contract5Addrs [] stores all and about 5 addresses in about 3.
First, before formally migration contract data, we judge that the intelligent contract system is one and has mutual call relation
Multistage intelligent contract system.By the tree shaped model (shown in Fig. 2) of contract call relation, it is known that being called and about 2 with about 1
With called with about 3, and about 2 and about 4 and and about 5, and about 3 call and about 5.According to step 2), step 3), step 4) and step
5), dispose first it is new and about 4 and and about 5, and migrate contract data, store the address of new contract.Now, and about 2 and and about 3
All child node contracts migrated and finished, deployment it is new and about 2 and and about 3, migrate all data in addition to contract address,
Finally store it is new and about 4 and and about 5 address.Final step, and all migration is completed about 1 all child node contracts, portion
Administration it is new and about 1, migrate all data in addition to contract address, storage it is new and about 2 and and about 3 address.This is arrived, the multistage
The Data Migration of intelligent contract system is finished.
Claims (5)
1. a kind of data migration method towards block chain multistage intelligent contract, it is characterised in that comprise the following steps：
1) for the intelligent contract system for there are multiple contracts mutually to call, contract data is migrated step by step using tree shaped model, it is tree-shaped
Father node contract calls child node contract in model.
2) contract of top mode, data of the migration top layer contract in addition to child node contract address are disposed.
3) whether node where judging current contract is leaf node, if present node is not leaf node, and prosthomere is worked as in reading
The contract address of the child node of point, the judgement is repeated to sub- contract；If present node is leaf node, into step 4).
4) dispose the new contract of leaf node and migrate the data of the contract, the contract address of store leaf node.
5) all contract nodes are traveled through, if the Data Migration of all child nodes of node is finished where contract, start to dispose newly
Current contract, migrates contract data and stores the new address of all child node contracts；Otherwise, read without completion Data Migration
Sub- contract address, carries out step 3).
6) step 3 is repeated) arrive step 5), until node where current contract is top mode, migrate the institute of top layer contract
There is the contract address parameter of sub- contract.
2. a kind of data migration method towards block chain multistage intelligent contract as claimed in claim 1, it is characterised in that institute
The step 1 stated) in for there is multiple contracts for mutually calling to construct tree shaped model, father node is stored with son wherein in tree shaped model
The contract address of node simultaneously has call relation to child node contract, and a contract can call many sub- contracts, a contract
It can be called by multiple father's contracts.
3. a kind of data migration method towards block chain multistage intelligent contract as claimed in claim 1, it is characterised in that institute
The step 2 stated) in, contract can dispose new contract when migrating, and each contract has unique contract address；Top layer is migrated to close
About data when should remove old contract address, only all child node contract datas are after all migration is finished, father node contract
Just start Data Migration, the migration of contract address should be based on newly deployed contract.
4. a kind of data migration method towards block chain multistage intelligent contract as claimed in claim 1, it is characterised in that
Call before contract method migration contract data, all private key files decrypted to form plaintext private key with its corresponding password,
Plaintext private key is deposited in the buffer using caching mechanism.
5. a kind of data migration method towards block chain multistage intelligent contract as claimed in claim 1, it is characterised in that
When migrating contract data, new contract is write using the old contract data of multithreading acquisition and by old contract data.
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| CN110175844A (en) * | 2019-05-07 | 2019-08-27 | 深圳前海微众银行股份有限公司 | The dissemination method and device of intelligent contract in a kind of block chain |
| WO2020224353A1 (en) * | 2019-05-07 | 2020-11-12 | 深圳前海微众银行股份有限公司 | Method and device for publishing smart contracts in block chain |
| CN111104144A (en) * | 2019-12-27 | 2020-05-05 | 珠海金山网络游戏科技有限公司 | Anchor point updating method and device |
| CN111104144B (en) * | 2019-12-27 | 2023-10-20 | 珠海金山数字网络科技有限公司 | Anchor point updating method and device |
| CN111680317A (en) * | 2020-04-27 | 2020-09-18 | 华东师范大学 | Block chain-oriented optimistic concurrency order-preserving coding method |
| CN111680317B (en) * | 2020-04-27 | 2021-05-25 | 华东师范大学 | Block chain-oriented optimistic concurrency order-preserving coding method |
| CN111679902B (en) * | 2020-08-14 | 2020-11-10 | 支付宝(杭州)信息技术有限公司 | Intelligent contract calling method and device based on block chain and electronic equipment |
| CN111679902A (en) * | 2020-08-14 | 2020-09-18 | 支付宝(杭州)信息技术有限公司 | Intelligent contract calling method and device based on block chain and electronic equipment |
| CN111949297A (en) * | 2020-08-20 | 2020-11-17 | 杭州溪塔科技有限公司 | Block chain intelligent contract upgrading method and device and electronic equipment |
| CN111949297B (en) * | 2020-08-20 | 2023-04-07 | 杭州溪塔科技有限公司 | Block chain intelligent contract upgrading method and device and electronic equipment |
| CN112400182A (en) * | 2020-10-12 | 2021-02-23 | 北京和联共识科技有限公司 | Method and device for executing intelligent contracts in block chain and electronic equipment |
| CN112527781A (en) * | 2020-12-23 | 2021-03-19 | 上海万向区块链股份公司 | Intelligent contract data migration method and system |
| CN112866025A (en) * | 2021-01-14 | 2021-05-28 | 公安部第三研究所 | Intelligent contract fragment processing method |
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