CN107562513A - A kind of management method of the intelligent contract life cycle based on JAVA - Google Patents
A kind of management method of the intelligent contract life cycle based on JAVA Download PDFInfo
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- CN107562513A CN107562513A CN201710585455.8A CN201710585455A CN107562513A CN 107562513 A CN107562513 A CN 107562513A CN 201710585455 A CN201710585455 A CN 201710585455A CN 107562513 A CN107562513 A CN 107562513A
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Abstract
The invention discloses a kind of management method of the intelligent contract life cycle based on JAVA, this method handles the deployment of client by realizing a JCEE server, call, upgrading, freeze, the request of defrosting contract, a unique contract address is generated to each contract and instantiates a contract object, the object is used to handle all requests being sent on corresponding contract address, JCEE servers can carry out security inspection to each contract request, check the legitimacy of its bytecode, the request processing of contract can just be carried out by checking after passing through, and return result to client.Because this product is developed based on JAVA language, therefore user can be deployed to the management that contract life cycle is carried out in any block platform chain, improve the scalability of block platform chain.
Description
Technical field
The present invention relates to block chain technology, more particularly to a kind of manager of the intelligent contract life cycle based on JAVA
Method.
Background technology
Block chain technology, block chain are a kind of new decentralization agreements, can safely store digital cash transaction or its
His data, information can not be forged and distorted, and the trade confirmation on block chain is completed jointly by all nodes on block chain, by altogether
Know algorithm and ensure its consistency, safeguard a public account book on block chain, public account book is located at any node in memory block
It can be seen that so as to ensure that it can not forge and distort.
Intelligent contract is the assembler language being programmed on block chain, and the term is that cross-cutting jurisprudent Ni Kesabo is carried
Out, his definition to intelligent contract is that " an intelligent contract is a set of promise defined in digital form, including contract ginseng
With side can be performed above these promise agreement ", in other words, intelligent contract be exactly one on the computer systems, when
After certain condition is satisfied, the contract that can be performed automatically.Usual people oneself will not write bytecode, but can be from higher level
Language compile it, such as with similar Solidity etc. specific language.
The decentralization of block chain provides a good development environment with the characteristic that can not be distorted to intelligent contract, because
This in recent years, a series of block chain communities such as bit coin network, ether mill network all start to provide disclosed intelligence and closed successively
The interface about programmed.But in the development process of intelligent contract, lack the management method of a perfect life cycle always,
Especially lack a kind of intelligent contract administration method based on current main-stream programming language.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes a kind of intelligent contract administration method based on JAVA, from intelligence
The management of whole intelligent contract life cycle, tool are realized in the deployment of contract, calling, the management that upgrades, freeze, thawing etc.
Body technique scheme is as follows：
A kind of management method of the intelligent contract life cycle based on JAVA, comprises the following steps：
Step 1：Contract is disposed；
Intelligent contract enforcement engine (JAVA based Contract Execution based on JAVA virtual machine
Engine, hereinafter referred to as JCEE) client receive user input compressed class file, then decompress class file simultaneously it is lasting
After change, generate the unique mark contract address ContractAddress of contract, together with class file address to JCEE server ends
Send deployment request；JCEE server ends by monitor designated port receive contract deployment that JCEE clients send over please
Ask, security inspection is carried out to contract first, pass through if checked, contract is persisted in metadatabase, then
Class file is loaded into the deployment that contract is carried out in internal memory；If check not by, directly exit this contract deployment, and to
JCEE clients return to error message；
Step 2：Operation corresponding to being performed according to user's request to contract：
(1) when needing to call contract：JCEE clients receive the calling invoke requests of user's input, parse calling
The method name and parameter that unique mark ContractAddress, the contract of contract call, send contract to JCEE server ends and adjust
Asked with invoke；JCEE server ends by monitor designated port receive that the contract that JCEE clients send over calls please
Ask, security inspection is carried out to contract first, pass through if checked, call the designation method for specifying contract address and synchronous account
This information arrives JCEE clients, realizes the calling of contract, if check not by, terminate this contract call, and to
JCEE clients return to error message；
(2) when needing to upgrade contract：JCEE clients receive the upgrading update requests of user's input, parse old conjunction
Unique mark ContractAddress about, the class file address together with new contract sends update to JCEE server ends please
Ask；The contract upgrade request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, first pairing
Security inspection is about carried out, if checked not by directly exiting this contract upgrading, and return to error message to JCEE
Client；If inspection passes through, the inquiry of old contract is carried out, if it is possible to inquire old contract, then first destroy old contract, so
The new contract of persistence and load the class file of new contract afterwards the upgrading of contract is completed into internal memory, if old contract can not be found,
The persistence and loading of new contract are then directly carried out, completes the upgrading of contract；
(3) when needing to freeze contract：The frozen that freezes that JCEE clients receive user's input is asked, and is parsed and is wanted
Freeze contract unique mark ContractAddress, together with contract new state position to JCEE server ends send freeze please
Ask；The contract freeze request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, first pairing
Security inspection is about carried out, is passed through if checked, the mode bit of renewal contract is frozen states, realizes freezing for contract；
If check not by the way that the contract for exiting this freezes, and returns to error message to JCEE clients；
(4) when needing defrosting contract：JCEE clients receive the defrosting unfrozen requests of user's input, parse institute
Thaw contract unique mark ContractAddress, together with contract new state position to JCEE server ends send thaw
Request；The contract defrosting request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, it is right first
Contract carries out security inspection, passes through if checked, the mode bit of renewal contract is unfrozen states, realizes the solution of contract
Freeze；If check not by exiting this contract and thawing, and error message is returned to JCEE clients；
Further, in described step one, JCEE servers are managed collectively all intelligent contracts, contract portion each time
Administration goes to safeguard all simply once to the calling of JCEE servers without playing a thread for each intelligent contract sheet, convenient
The contract administration of whole platform, decreases the waste of system resource.
Further, in described step one, JCEE servers pass through remote procedure call protocol RPC and JCEE clients
Communicated, the security inspection of described contract include checking whether contract bytecode legal and check in contract information whether
Include contract address.
Beneficial effects of the present invention：The present invention is applied on block platform chain, there is provided a set of brand-new intelligent contract life
The management in cycle is ordered, the deployment of contract, calling is realized, upgrades, freezes, thawing, the contract administration for block platform chain provides
It is convenient.Meanwhile security inspection can be all carried out in each stage of contract life cycle, this product, improve contract life
Order the security in cycle.
Brief description of the drawings
Fig. 1 is deployment contract state diagram；
Fig. 2 is upgrading contract state diagram.
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.
The present invention is a kind of intelligent contract life cycle management method based on JAVA, is comprised the following steps：
Step 1：Contract is disposed；
The client of intelligent contract enforcement engine JCEE based on JAVA virtual machine receives the compressed class of user's input
File, after then decompressing class file and persistence, the unique mark contract address ContractAddress of contract is generated, together with
The address of class file sends deployment request to JCEE server ends；JCEE server ends receive JCEE visitors by monitoring designated port
The contract deployment request that family end sends over, carries out security inspection to contract first, passes through if checked, contract is lasting
Change into metadatabase, class file can be then loaded into the deployment that contract is carried out in internal memory；If check not by directly
This contract deployment is exited, and error message is returned to JCEE clients；
Step 2：Operation corresponding to being performed according to user's request to contract：
(1) when needing to call contract：JCEE clients receive the calling invoke requests of user's input, parse calling
The method name and parameter that unique mark ContractAddress, the contract of contract call, send contract to JCEE server ends and adjust
Asked with invoke；JCEE server ends by monitor designated port receive that the contract that JCEE clients send over calls please
Ask, security inspection is carried out to contract first, pass through if checked, call the designation method for specifying contract address and synchronous account
This information arrives JCEE clients, realizes the calling of contract, if check not by, terminate this contract call, and to
JCEE clients return to error message；
(2) when needing to upgrade contract：JCEE clients receive the upgrading update requests of user's input, parse old conjunction
Unique mark ContractAddress about, the class file address together with new contract sends update to JCEE server ends please
Ask；The contract upgrade request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, first pairing
Security inspection is about carried out, if checked not by directly exiting this contract upgrading, and return to error message to JCEE
Client；If inspection passes through, the inquiry of old contract is carried out, if it is possible to inquire old contract, then first destroy old contract, so
The new contract of persistence and load the class file of new contract afterwards the upgrading of contract is completed into internal memory, if old contract can not be found,
The persistence and loading of new contract are then directly carried out, completes the upgrading of contract；
(3) when needing to freeze contract：The frozen that freezes that JCEE clients receive user's input is asked, and is parsed and is wanted
Freeze contract unique mark ContractAddress, together with contract new state position to JCEE server ends send freeze please
Ask；The contract freeze request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, first pairing
Security inspection is about carried out, is passed through if checked, the mode bit of renewal contract is frozen states, realizes freezing for contract；
If check not by the way that the contract for exiting this freezes, and returns to error message to JCEE clients；
(4) when needing defrosting contract：JCEE clients receive the defrosting unfrozen requests of user's input, parse institute
Thaw contract unique mark ContractAddress, together with contract new state position to JCEE server ends send thaw
Request；The contract defrosting request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, it is right first
Contract carries out security inspection, passes through if checked, the mode bit of renewal contract is unfrozen states, realizes the solution of contract
Freeze；If check not by exiting this contract and thawing, and error message is returned to JCEE clients.
In described step one, JCEE servers are managed collectively all intelligent contracts, and contract deployment each time is all
Once to the calling of JCEE servers, and go to safeguard without playing a thread for each intelligent contract sheet.
Some attributes letter of the contract is it is also required to provide in described step one, while the class file that user terminal is specified
Breath, facilitates the position of JCEE client location class files, and JCEE clients generate unique contract address by block platform chain
Afterwards, the request of contract can be affixed one's name to JCEE server sending departments, needs to take contract address in the request related to contract
The position of information, such as contract class file, JCEE servers can be can be set with JCEE clients on same main frame, can also
It is arranged on different main frames, JCEE server ends are communicated by remote procedure call protocol RPC with JCEE clients, are obtained
After having arrived the request of JCEE clients, the inspection of contract security can be carried out, check that whether contract bytecode is legal etc., checks logical
Later, the inspection of contract completeness can be also carried out, specifically includes and checks in contract information whether contain contract address etc., is completed
After two check, can just carry out the persistence of contract, by the storage of new contract into metadatabase, after the completion of just can really enter
Contract, i.e., be loaded into internal memory by the deployment of row contract.
In described step two, the calling of contract is that user is most intuitively experienced using intelligent contract, and user passes through input
Method name, the parameter of contract, and after specifying and being called the address of contract, send JSON-RPC to JCEE clients and ask,
Can is transmitted to JCEE server ends after JCEE clients only encapsulate relevant parameter, and JCEE servers can equally be pacified
The inspection of full property and completeness, inspection can just enter corresponding execution flow after passing through.
In described step two, the upgrading of contract needs user to provide new contract class file and old contract address,
Old contract address, which is used to position, destroys original contract, and a newly-built new contract on the address, therefore after contract upgrading,
Contract address is constant.
In described step two, contract freezes simply to be modified contract mode bit, and the contract after freezing can not
The operation such as it is called, updates again.
In described step two, the defrosting of contract needs to provide the contract address of frozen contract, likewise, contract thaws
Also simply contract mode bit is modified, the contract after defrosting, which can continue to call, update, etc. operates.
Claims (3)
1. a kind of management method of the intelligent contract life cycle based on JAVA, it is characterised in that comprise the following steps：
Step 1：Contract is disposed：
The client of intelligent contract enforcement engine JCEE based on JAVA virtual machine receives the compressed class file of user's input,
After then decompressing class file and persistence, the unique mark contract address ContractAddress of contract is generated, together with class file
Address to JCEE server ends send deployment request；JCEE server ends receive JCEE clients hair by monitoring designated port
The contract deployment request brought, carries out security inspection to contract first, passes through if checked, contract is persisted into member
In database, class file can be then loaded into the deployment that contract is carried out in internal memory；If check not by directly exiting this
Secondary contract deployment, and return to error message to JCEE clients.
Step 2：Operation corresponding to being performed according to user's request to contract：
(1) when needing to call contract：JCEE clients receive the calling invoke requests of user's input, parse calling contract
Unique mark ContractAddress, contract call method name and parameter, to JCEE server ends send contract call
Invoke is asked；JCEE server ends please by monitoring designated port receives that JCEE clients send over and about invoke
Ask, security inspection is carried out to contract first, pass through if checked, call the designation method for specifying contract address and synchronous account
This information arrives JCEE clients, realizes the calling of contract, if check not by, terminate this contract call, and to
JCEE clients return to error message；
(2) when needing to upgrade contract：JCEE clients receive the upgrading update requests of user's input, parse old contract
Unique mark ContractAddress, the class file address together with new contract send update requests to JCEE server ends；
The contract upgrade request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, enters to contract first
Row security inspection, if checked not by directly exiting this contract upgrading, and return to error message to JCEE client
End；If inspection passes through, the inquiry of old contract is carried out, if it is possible to inquire old contract, then first destroy old contract, Ran Houchi
Change new contract long and load the class file of new contract and the upgrading of contract is completed into internal memory, if old contract can not be found, directly
The persistence and loading of the new contract of row are tapped into, completes the upgrading of contract；
(3) when needing to freeze contract：The frozen that freezes that JCEE clients receive user's input is asked, and parses to be freezed
The unique mark ContractAddress of contract, the new state position together with contract send freeze request to JCEE server ends；
The contract freeze request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, enters to contract first
Row security inspection, pass through if checked, the mode bit of renewal contract is frozen states, realizes freezing for contract；If
Check not by the way that the contract for then exiting this freezes, and returns to error message to JCEE clients；
(4) when needing defrosting contract：JCEE clients receive the defrosting unfrozen requests of user's input, parse to be solved
The unique mark ContractAddress of jelly contract, the new state position together with contract send request of thawing to JCEE server ends；
The contract defrosting request that JCEE server ends receive JCEE clients and sended over by monitoring designated port, enters to contract first
Row security inspection, pass through if checked, the mode bit of renewal contract is unfrozen states, realizes the defrosting of contract；Such as
Fruit is checked not by then exiting this contract and thawing, and return to error message to JCEE clients.
2. the management method of the intelligent contract life cycle based on JAVA as claimed in claim 1, it is characterised in that described
In step 1, JCEE servers are managed collectively all intelligent contracts, and contract deployment each time all simply once services to JCEE
The calling of device, and go to safeguard without playing a thread for each intelligent contract sheet.
3. the management method of the intelligent contract life cycle based on JAVA as claimed in claim 1, in described step one,
JCEE servers are communicated by remote procedure call protocol RPC with JCEE clients, the security inspection of described contract
Including checking whether contract bytecode is legal and checks in contract information whether include contract address.
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| CN110535928B (en) * | 2019-08-22 | 2022-04-01 | 杭州趣链科技有限公司 | Event pushing method for JAVA intelligent contract of block chain |
| CN111062060A (en) * | 2019-11-28 | 2020-04-24 | 杭州趣链科技有限公司 | Voting proposal life cycle management method based on intelligent contract |
| CN111062060B (en) * | 2019-11-28 | 2022-04-26 | 杭州趣链科技有限公司 | Voting proposal life cycle management method based on intelligent contract |
| CN111245910A (en) * | 2019-12-31 | 2020-06-05 | 杭州趣链科技有限公司 | Block chain light node multi-copy deployment method |
| CN111221568A (en) * | 2020-01-10 | 2020-06-02 | 杭州趣链科技有限公司 | Fabric chain code life cycle management system based on physical machine deployment |
| CN111221568B (en) * | 2020-01-10 | 2023-05-26 | 杭州趣链科技有限公司 | Fabric chain code life cycle management system based on physical machine deployment |
| CN111651169A (en) * | 2020-05-19 | 2020-09-11 | 鼎链数字科技(深圳)有限公司 | Block chain intelligent contract operation method and system based on web container |
| CN111651169B (en) * | 2020-05-19 | 2023-07-04 | 鼎链数字科技(深圳)有限公司 | Block chain intelligent contract operation method and system based on web container |
| CN112037055A (en) * | 2020-08-17 | 2020-12-04 | 成都质数斯达克科技有限公司 | Transaction processing method and device, electronic equipment and readable storage medium |
| CN112037055B (en) * | 2020-08-17 | 2023-05-05 | 成都质数斯达克科技有限公司 | Transaction processing method, device, electronic equipment and readable storage medium |
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