CN109063109A - A kind of data query system based on ether mill - Google Patents
A kind of data query system based on ether mill Download PDFInfo
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Abstract
The invention discloses a kind of data query systems based on ether mill, comprising: Sync Manager module, processing routine chain module, persistent data frame module and developer's interface module.Through the above way, the present invention is based on the data query systems in ether mill to solve the problems, such as efficiently to inquire block chain data by increasing an inquiry layer to existing block catenary system, wherein support a series of useful analysis querying methods such as polymerization and top-k inquiry, in view of ether mill abundant application and the ecosystem, the way of thinking of this system can be applied in other block platform chains, have extensive market prospects in popularizing for the data query system based on ether mill.
Description
Technical field
The present invention relates to data query fields, more particularly to a kind of data query system based on ether mill.
Background technique
After bit coin, various encryption currency emerge in large numbers like the mushrooms after rain, and encryption currency has become a kind of novel
Money-form, makes it possible point-to-point direct dealing.Floor layer Technology of the block chain as encryption currency, can be considered as
One distributed general ledger, has recorded the All Activity and account status in whole network.Block chain is referred to as by a series of
The data concatenating of block forms, and the latter block, which retains, quotes the Hash of previous block.Block is mainly by the area block Tou He
Block composition, block head save the timestamp of current block, the metadata such as cryptographic Hash, and block main body includes corresponding transaction record
List.Each complete node in network keeps the copy of a general ledger, and by knowing together, algorithm reaches data consistency, common
Common recognition algorithm include that proof of work (POW), equity prove (POS) and Byzantium's general's PBFT algorithm etc..
The block chain software architecture novel as one, there are many implementations.Most typical two block chains at this stage
Platform is bit coin and ether mill.Bit coin makes invocation point pair as first distributed digital transaction in assets platform for the first time
The direct dealing of point is possibly realized, and the extension as bit coin, and it is complete that ether mill attempts the realization one on block chain technology
Standby Turing computing model provides platform support for the decentralization application on upper layer.Such as digital assets transfer, copyright is proved, public
Transparent ballot system is opened, the even application such as encryption cat game, is all to realize on the platform of ether mill.
Block chain data are stored in a simple key-value pair data library the (database that official supports at present by ether mill
It is LevelDB).LevelDB be one developed by team of Google, increase income, number in process that possess splendid write performance
According to library, it has the ability of processing mass data, and makes the realization of block chain independent of any third-party commercial number
According to library.And block data can be automatically compressed in two steps before being synchronized to hard disk, so that LevelDB stores energy compared to other data
Enough save a large amount of disk spaces.
But the original intention of LevelDB design is to realize an efficient, simple key-value pair data library, has abandoned such as affairs
(Transactions), the sophisticated functions that the Common databases such as storing process are supported.The result is that the data-interface that LevelDB is provided
It is extremely limited, only supports 14 kinds of interfaces by the end of current latest edition v1.2, wherein remove except the operations such as File Open closing,
Interface relevant with data query is even more few pitiful.And data query operation is generally also only limitted to through a keyword
(cryptographic Hash) removes the simple record of additions and deletions verification certificate.Further, since LevelDB is for storing to the record on disk, it is basis
The lexicographic order tissue of keyword, the support of random data access is more many slowly than sequential access efficiency, and block chain is usual
Keyword be all random Hash result, more reduce the efficiency of LevelDB.
Since bottom LevelDB only supports limited inquiry, retrieval block chain data are extremely limited.At present
There are some systems to provide the basic interface of inquiry block chain data.For example, Blockchain.info encapsulates the area of bit coin
Block, transaction and address interface provide RESTful service, developer are facilitated to use.Toshi project realizes bit coin agreement, after
End uses PostgreSQL database purchase block chain data, provides basic query operation and limited data page function.
Etherscan is that the foundation of ether mill provides the block chain Data Analysis Platform of technical support, which has a revision
Ether mill virtual machine, more useful informations can be extracted from block chain data, such as insider transaction that some transaction generates.
Etherchain extends the basic development interface in ether mill and provides simple statistical information, for example block time and transaction are always
Number etc..
These systems possess information more abundant and provide basic developer's interface, so that exploring the area in block chain
The information such as block, transaction and account are more convenient.However, these systems do not support more complicated block chain data query.It lifts a
Example does not support figure inquiry and top-k inquiry in those systems.In addition to this, as third party's interface, the frequency used is also received
To many restrictions.By taking Etherscan as an example, request rate limitation at 5 times per second.In short, these systems join block catenary system
It is helpful with person, but it is not suitable for the application program of data analysis classes.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of data query systems based on ether mill, by using same
The block monitor in manager module is walked to continuously listen for newest block, once obtain newest block data, block
Monitor puts it into buffering queue to handle provisional bifurcated present in block chain technology, and processing routine chain module is postponed
Block chain data are constantly obtained in depositing and block chain data are resolved into three kinds of data structures using three kinds of different resolvers:
Block data, transaction record and account status, the additions and deletions of persistent data frame module definition, which change, looks into module, and data are stored in
In the database for supporting SQL query, the foundation of developer's interface module changes in additions and deletions and looks on module, conceals wherein complicated
Data manipulation logic simultaneously provides data access operation interface easy to use, and wherein api interface module can be used to directly and bottom
Layer data interaction, REST interface module have more flexibilities in program maintenance and application section management side face, are being based on ether mill
Data query system it is universal on have extensive market prospects.
In order to solve the above technical problems, the present invention provides a kind of data query system based on ether mill, comprising: lock-in tube
Device module, processing routine chain module, persistent data frame module and developer's interface module are managed,
The Sync Manager module includes block monitor and buffer, and the block monitor is synchronous from ether mill in real time
Block chain data, wherein block chain is several blocks by cryptographic Hash formation chain structure, and block chain data are described to be stored in
The data of block chain, the buffer detect the potential bifurcated in the block chain data, and when bifurcated generates, the buffer is then weighed
Main split is built to continuously listen for newest block, when the newest block chain data of acquisition, the area block monitor Ze Jianggai
Block chain data are put into buffering queue to handle provisional bifurcated present in block chain data,
The processing routine chain module includes block processes device, transaction processor, account processor, and the block processes device will pass
The block chain data entered are regarded as an entirety and create new block entity, and the transaction processor tracking is included in current block
In transaction List Table and increase corresponding transaction entity, the account processor updates account entity to reflect that account status becomes
Change,
The persistent data frame module includes data memory module and additions and deletions change and look into module, the data memory module storage
For original block chain data to guarantee scalability, the additions and deletions, which change, looks into the external MongoDB database of module to save the processing
Program chain module transmission output as a result,
Developer's interface module includes api interface module and Rest interface module, and the api interface module is ether mill
Account, transaction and block provide query interface, and the Rest interface module is developer before holding whole block chain data
It puts and block chain data service is provided, to support more analytic type application programs.
In a preferred embodiment of the present invention, the block includes block head and block body, the data of the block head
Including cryptographic Hash, block number, miner address, gasoline, receipts of transactions, dig mine disaster degree, random number, account root vertex, transaction tree
Root node and receipt root vertex.
In a preferred embodiment of the present invention, the cryptographic Hash that each block is stored is the previous area of the block
The cryptographic Hash of block.
In a preferred embodiment of the present invention, the account root vertex includes account balance and other information.
In a preferred embodiment of the present invention, the transaction root vertex is the data packet signed by sender, is used
It is stored in the Transaction Information that an account in block chain network is sent to another account, the Transaction Information includes transaction
Originator address, the recipient address of transaction, sender are sent to the turnover of recipient, the message of transmission.
In a preferred embodiment of the present invention, the receipt root vertex includes all accounts after transaction record, transaction
The block uses a series of log generated in tranaction costs and transaction implementation procedures in total after family state, transaction execute.
In a preferred embodiment of the present invention, the account root vertex, the transaction root vertex, the receipt tree
Root node is Merkel's tree construction.
In a preferred embodiment of the present invention, the buffering queue includes Block Queue queue and To Flush team
Column, wherein the Block Queue queue is for storing the block data received and removing repetition block, the To Flush
Queue without the block data of bifurcated risk from the Block Queue queue for will take out.
In a preferred embodiment of the present invention, the api interface module, the Rest interface module include ether mill
Query interface, scalability query interface, range query interface, the top-K query interface of support.
The beneficial effects of the present invention are: the present invention is based on the data query systems in ether mill by using Sync Manager mould
Block monitor in block continuously listens for newest block, once obtain newest block data, block monitor by its
Buffering queue is put into handle provisional bifurcated present in block chain technology, processing routine chain module from caching constantly
It obtains block chain data and block chain data is resolved into three kinds of data structures: block data using three kinds of different resolvers,
Transaction record and account status, the additions and deletions of persistent data frame module definition, which change, looks into module, and data, which are stored in, supports SQL to look into
In the database of inquiry, the foundation of developer's interface module changes in additions and deletions is looked on module, conceals wherein complicated data manipulation
Logic simultaneously provides data access operation interface easy to use, and wherein api interface module can be used to directly hand over bottom data
Mutually, REST interface module has more flexibilities in program maintenance and application section management side face, looks into the data based on ether mill
Popularizing for inquiry system has extensive market prospects.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the structural representation of the block chain data of data query system one preferred embodiment of the invention based on ether mill
Figure；
Fig. 2 is the structural schematic diagram of data query system one preferred embodiment of the invention based on ether mill；
Fig. 3 is that the transmitting path of the block chain data of data query system one preferred embodiment of the invention based on ether mill is shown
It is intended to.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Fig. 1-Fig. 3 is please referred to, the embodiment of the present invention includes:
A kind of data query system based on ether mill, comprising: Sync Manager module, processing routine chain module, lasting data
Property frame module and developer's interface module.
The Sync Manager module includes block monitor and buffer, and the block monitor is in real time from ether mill
Synchronous block chain data, wherein block chain is several blocks by cryptographic Hash formation chain structure, and block chain data are to be stored in
The data of the block chain, the buffer detect the potential bifurcated in the block chain data, when bifurcated generation, the buffer
Rebuild main split then to continuously listen for newest block, when obtaining newest block chain data, the block monitor then will
The block chain data are put into buffering queue to handle provisional bifurcated present in block chain data,
The processing routine chain module includes block processes device, transaction processor, account processor, and the block processes device will pass
The block chain data entered are regarded as an entirety and create new block entity, and the transaction processor tracking is included in current block
In transaction List Table and increase corresponding transaction entity, the account processor updates account entity to reflect that account status becomes
Change,
The persistent data frame module includes data memory module and additions and deletions change and look into module, the data memory module storage
For original block chain data to guarantee scalability, the additions and deletions, which change, looks into the external MongoDB database of module to save the processing
Program chain module transmission output as a result,
Developer's interface module includes api interface module and Rest interface module, and the api interface module is ether mill
Account, transaction and block provide query interface, and the Rest interface module is developer before holding whole block chain data
It puts and block chain data service is provided, to support more analytic type application programs.
Preferably, the block includes block head and block body.Initial data of the invention is ether mill block chain
Block data, the data are binary data, using the lightweight client (EthereumJ) of bottom, by binary block
Data become BlockSummary object, BlockSummary packet according to ether mill data structure standard agreement, by data decoding
It includes cryptographic Hash, block number, miner address, gasoline, receipts of transactions, dig mine disaster degree, random number, account root vertex, transaction tree root
Node and receipt root vertex.
Preferably, the cryptographic Hash that each block is stored is the cryptographic Hash of the previous block of the block.
Preferably, the account root vertex includes account balance and other information.
Preferably, the transaction root vertex is the data packet signed by sender, for being stored in block chain network
In an account be sent to the Transaction Information of another account, the Transaction Information includes the originator address of transaction, transaction
Recipient address, sender are sent to the turnover of recipient, the message of transmission.
Preferably, the receipt root vertex includes after all account status after transaction record, transaction, transaction execute
The block uses a series of log generated in tranaction costs and transaction implementation procedures in total.
Preferably, the account root vertex, the transaction root vertex, the receipt root vertex are Merkel tree
Structure.
Preferably, the buffering queue includes Block Queue queue and To Flush queue, wherein the Block
Queue queue is for storing the block data received and removing repetition block (in distributed network, different miners is almost
Digging simultaneously arrives the block of sustained height and to other node broadcasts of network, causes same node that may receive multiple repetition blocks
Data), the To Flush queue without the block data of bifurcated risk from the Block Queue queue for will take
Out.Default 5 blocks in realization of the invention, in Block Queue queue and do not have bifurcated risk, the setting and it is current most
Popular ether mill client Go-Ethereum is identical.
Processing routine chain module is registered as the component for buffer, obtains in the slave buffering queue of circulation to be treated
Block then successively calls three kinds of processors in processing routine chain module: block processes device once getting block data
(Block Handler), transaction processor (Transaction Handler) and account processor (Account Handler).
Three kinds of processors input (Block Summary) having the same.
Wherein, block processes device disassembles block for following information: block height, block Hash, father's block Hash, block
Nonce, the root for tree of trading, the root of State Tree, miner dig mine disaster degree, block additional information, block maximum gasoline value (Gas
Limit), the gasoline (Gas Used) of block actual use, block timestamp, the serializing result of transaction List Table.
Transaction is resolved to following information by transaction processor: transaction Hash, trade Nonce, block Hash, transaction initiator
Address, reciever address of trading, ether (Ether) quantity of transaction, gas price (Gas Price), trade maximum gasoline
(Gas Limit), additional data of trading, the gasoline (Gas Used) of actual consumption, it is more to return to transaction initiator for transactional overhead
Remaining gasoline (Gas Refund), few quantity can not return to transaction sender gasoline (less than agreement gasoline default not
Return to transaction initiator), and the result after transaction execution.
Account information is simultaneously stored in block data, but is needed successively to execute All Activity and considered other special circumstances
(as dug mine reward, account destruction etc.).Account is conceptualized as data structure below: account address in the present invention, account balance,
Account Nonce, if be contract account identification, the code of contract account.Account processor is simulated at ether mill virtual machine (EVM)
The mode for managing transaction determines that account changes by successively executing transaction.Therefore account processor input be transaction data and
The additional data of block handles account variation by following 6 steps:
(1) increase the Nonce value of transaction initiator,
(2) tranaction costs of transaction initiator are deducted,
(3) if the transaction purpose is to create intelligent contract, corresponding contract account is created,
(4) money transfer transactions are executed,
(5) insider transaction in contract transaction is executed,
(6) processing account destroys logic.
The processing of above-mentioned three kinds of processors complete after as a result, can be by persistent data frame module to structured database
In.
In order to maintain inquiry flexibility while support persistent data, this system uses MongoDB database as outside
Data storage saves the output result of processing routine chain module.MongoDB is the open source with very big flexibility across flat
Platform NoSQL database, and can be by simply configuring realization scalability.This system is MongoDB example setting default
Connection attribute, but these attributes can carry out personalized configuration according to specific environment.
Another innovation of this system is, abstract to providing one layer on different database realizings, to connect
Support of the addition to other databases in the version got off.The core of persistent data frame module is that additions and deletions change and look into module
(library CRUD), this is one group of SQL query template.Query template encapsulates the data access interface of bottom data storage, and converts
Function call is to actual data operations.For example, account template can be used for creating an account, the presence of account is verified, updates account
Family remaining sum and deletion existing account.
Preferably, the api interface module, the Rest interface module include query interface, the expansion that ether mill is supported
Malleability query interface, range query interface, top-K query interface.
Beneficial effect the present invention is based on the data query system in ether mill is:
Newest block is continuously listened for by using the block monitor in Sync Manager module, guarantees data query
Real-time and accuracy, support the efficient analysis inquiry of block chain data, once newest block data is obtained, block monitor
Buffering queue is put it into handle provisional bifurcated present in block chain technology, processing routine chain module from caching not
Block chain data are obtained disconnectedly and block chain data are resolved into three kinds of data structures: block counts using three kinds of different resolvers
According to transaction record and account status, the additions and deletions of persistent data frame module definition, which change, looks into module, and data are stored in support
In the database of SQL query, the foundation of developer's interface module changes in additions and deletions is looked on module, conceals wherein complicated data
Operation logic simultaneously provides data access operation interface easy to use, wherein api interface module can be used to directly with bottom number
According to interaction, REST interface module has more flexibilities in program maintenance and application section management side face.
The present invention solves asking for efficient inquiry block chain data by increasing an inquiry layer to existing block catenary system
A series of topic, wherein supporting useful analysis querying methods such as polymerization and top-k inquiry.In view of ether mill abundant application and ecology
System, the way of thinking of this system can be applied in other block platform chains.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (9)
1. a kind of data query system based on ether mill characterized by comprising Sync Manager module, processing routine chain
Module, persistent data frame module and developer's interface module,
The Sync Manager module includes block monitor and buffer, and the block monitor is synchronous from ether mill in real time
Block chain data, wherein block chain is several blocks by cryptographic Hash formation chain structure, and block chain data are described to be stored in
The data of block chain, the buffer detect the potential bifurcated in the block chain data, and when bifurcated generates, the buffer is then weighed
Main split is built to continuously listen for newest block, when the newest block chain data of acquisition, the area block monitor Ze Jianggai
Block chain data are put into buffering queue to handle provisional bifurcated present in block chain data,
The processing routine chain module includes block processes device, transaction processor, account processor, and the block processes device will pass
The block chain data entered are regarded as an entirety and create new block entity, and the transaction processor tracking is included in current block
In transaction List Table and increase corresponding transaction entity, the account processor updates account entity to reflect that account status becomes
Change,
The persistent data frame module includes data memory module and additions and deletions change and look into module, the data memory module storage
For original block chain data to guarantee scalability, the additions and deletions, which change, looks into the external MongoDB database of module to save the processing
Program chain module transmission output as a result,
Developer's interface module includes api interface module and Rest interface module, and the api interface module is ether mill
Account, transaction and block provide query interface, and the Rest interface module is developer before holding whole block chain data
It puts and block chain data service is provided, to support more analytic type application programs.
2. the data query system according to claim 1 based on ether mill, which is characterized in that the block includes block
Head and block body, the data of the block head include cryptographic Hash, block number, miner address, gasoline, receipts of transactions, dig mine disaster degree,
Random number, account root vertex, transaction root vertex and receipt root vertex.
3. the data query system according to claim 2 based on ether mill, which is characterized in that each block is deposited
The cryptographic Hash of storage is the cryptographic Hash of the previous block of the block.
4. the data query system according to claim 2 based on ether mill, which is characterized in that the account root vertex
Including account balance and other information.
5. the data query system according to claim 2 based on ether mill, which is characterized in that the transaction root vertex
To pass through the data packet that sender signs, for being stored in the transaction that an account in block chain network is sent to another account
Information, the Transaction Information include that the originator address of transaction, the recipient address of transaction, sender are sent to the friendship of recipient
Easy volume, transmission message.
6. the data query system according to claim 2 based on ether mill, which is characterized in that the receipt root vertex
The block later, which is executed, including all account status, transaction after transaction record, transaction uses tranaction costs and a system in total
The log generated in column transaction implementation procedure.
7. the data query system according to claim 2 based on ether mill, which is characterized in that the account tree root section
Point, the transaction root vertex, the receipt root vertex are Merkel's tree construction.
8. the data query system according to claim 1 based on ether mill, which is characterized in that the buffering queue includes
Block Queue queue and To Flush queue, wherein the Block Queue queue is for storing the block data received
And remove repetition block, the To Flush queue for will without bifurcated risk block data from the Block Queue
It is taken out in queue.
9. the data query system according to claim 1 based on ether mill, which is characterized in that the api interface module,
The Rest interface module includes query interface, the scalability query interface, range query interface, top-K that ether mill is supported
Query interface.
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