WO2022021768A1

WO2022021768A1 - Parallel chain transaction group execution method, and device and storage medium

Info

Publication number: WO2022021768A1
Application number: PCT/CN2020/138872
Authority: WO
Inventors: 马登极; 王志文; 吴思进
Original assignee: 江苏复杂美科技有限公司
Priority date: 2020-07-30
Filing date: 2020-12-24
Publication date: 2022-02-03
Also published as: CN111858772A

Abstract

A parallel chain transaction group execution method, and a device and a storage medium. The method comprises: during the execution of a first transaction group, determining whether the first transaction group comprises both a main chain-parallel chain cross-chain transaction and a non-main chain-parallel chain common transaction (S12); and if so, marking the first transaction group with an execution failure identifier (S14), such that when each parallel chain node of a first parallel chain is synchronized to the first transaction group marked with the identifier, the execution of the first transaction group fails. By means of the method, the successful execution of a cross-chain transaction can be ensured.

Description

Parachain transaction group execution method, device and storage medium

technical field

The present application relates to the field of blockchain technology, and in particular to a method, device and storage medium for executing a parallel chain transaction group.

Background technique

In the prior art, user A has opened account A on the main chain, opened account a on the first parallel chain, user B has opened account b on the first parallel chain, and user C opened an account on the first parallel chain There is account c; user A wants to transfer 10coins on the main chain to user B, and two transactions will be generated, tx1 (transfer 10coins in A to a), tx2 (transfer 10coins in a to b), the user A also wants to transfer 10coins on the first parachain to user C, which will generate transaction tx3 (transfer 10coins in a to c); user A wants to put 3 transactions into a transaction group to execute, and generate transactions Group txgroup1{tx1, tx2, tx3}; in the existing main chain-parachain mechanism, the main chain node executes tx1 in txgroup1{tx1, tx2, tx3}, if tx1 is successfully executed in the main chain, then the main chain A freezes 10 coins; after the parachain node synchronizes txgroup1, executes tx2 and tx3; tx2 executes successfully, if tx3 fails to execute due to insufficient balance or other reasons, then due to the atomicity of the transaction group, txgroup1 fails to execute (that is, tx2 also fails to execute ); but the 10coin of account A has been frozen on the main chain and cannot be transferred back and released through the parachain, that is to say, the 10coin of account A cannot be retrieved.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a parachain transaction group execution method, device and storage medium for successfully executing cross-chain transactions.

In a first aspect, the present invention provides a parachain transaction group execution method suitable for main chain nodes, the method comprising:

When executing the first transaction group, determine whether the first transaction group includes both main chain-first parachain cross-chain transactions and non-main chain-parachain ordinary transactions:

If yes, mark the first transaction group with an execution failure flag, so that when each parachain node of the first parachain synchronizes to the marked first transaction group, the execution of the first transaction group fails.

In a second aspect, the present invention provides a parachain transaction group execution method applicable to a parachain node, the method comprising:

Synchronize the first transaction group from the main chain;

When executing the first transaction group, if the first transaction group is marked with the flag of execution failure, the execution of the first transaction group fails;

Wherein, when the main chain node executes the first transaction, it is marked on the first transaction group when it is identified that the first transaction group includes both main chain-current parallel chain cross-chain transactions and ordinary transactions.

In a third aspect, the present invention also provides an apparatus comprising one or more processors and a memory, wherein the memory contains instructions executable by the one or more processors to cause the one or more processors to perform various functions according to the present invention. The parachain transaction group execution method provided by the embodiment.

In a fourth aspect, the present invention further provides a storage medium storing a computer program, the computer program causing a computer to execute the parachain transaction group execution method provided according to each embodiment of the present invention.

The parachain transaction group execution method, device and storage medium provided by various embodiments of the present invention determine whether the first transaction group includes both main chain-parachain cross-chain transactions and non-main chain- Ordinary transactions of parachains: if yes, mark the first transaction group with the flag of execution failure, so that when each parachain node of the first parachain synchronizes to the first transaction group marked with the flag, the execution of the first transaction group fails. method to ensure the successful execution of the main chain-parallel chain cross-chain transaction.

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a flowchart of a method for executing a parachain transaction group according to an embodiment of the present invention.

FIG. 2 is a flowchart of another parachain transaction group execution method provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a device according to an embodiment of the present invention.

detailed description

The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In the prior art, user A has opened account A on the main chain, opened account a on the first parallel chain, user B has opened account b on the first parallel chain, and user C opened an account on the first parallel chain have account c. Suppose there are parachain nodes PN1~PN4 on the first parachain; if user A wants to transfer 10coins on the main chain to user B, two transactions will be generated, tx1 (transferring 10coins in A to a), tx2 (transferring 10coins from A to a), Transfer 10coin in a to b), user A also wants to transfer 10coin on the first parachain to user C, a transaction tx3 will be generated (transfer 10coin in a to c); user A wants to transfer 3 transactions Put it into a transaction group for execution to generate transaction group txgroup1{tx1, tx2, tx3}.

In the existing main chain-parachain mechanism, the main chain node executes tx1 in txgroup1{tx1, tx2, tx3}. If tx1 is successfully executed in the main chain, A freezes 10 coins on the main chain; after PN1~PN4 synchronize txgroup1 , execute tx2 and tx3; if the execution of tx3 is unsuccessful, the execution of txgroup1 fails due to the atomicity of the transaction group; the consensus transactions tx(consensus_PN1), tx(consensus_PN2), tx(consensus_PN3), tx(consensus_PN3), tx(consensus_PN4); tx(consensus_PN1), tx(consensus_PN2), tx(consensus_PN3), tx(consensus_PN4), the execution status of txgroup1 is false; the main chain node finds that “the execution status of txgroup1 is false”, the consensus is successful, Then, A's 10coin will be deducted from the main chain to complete the cross-chain transaction, but B has not actually received the corresponding 10coin, that is to say, A's 10coin cannot be retrieved.

FIG. 1 is a flowchart of a method for executing a parachain transaction group according to an embodiment of the present invention. As shown in Figure 1, in this embodiment, the present invention provides a parachain transaction group execution method applicable to a main chain node, and the above method includes:

S12: When executing the first transaction group, determine whether the first transaction group includes both main chain-first parachain cross-chain transactions and ordinary transactions:

If yes, then go to step S14: marking the first transaction group with an execution failure flag, so that when each parachain node of the first parachain synchronizes to the marked first transaction group, the execution of the first transaction group fails.

Specifically, it is assumed that user A has an account A on the main chain, an account a on the first parachain, user B has an account b on the first parachain, and user C has an account on the first parachain c. Suppose there are parachain nodes PN1~PN4 on the first parachain; if user A wants to transfer 10coins on the main chain to user B, two transactions will be generated, tx1 (transferring 10coins in A to a), tx2 (transferring 10coins from A to a), Transfer 10coin in a to b), user A also wants to transfer 10coin on the first parachain to user C, a transaction tx3 will be generated (transfer 10coin in a to c); user A wants to transfer 3 transactions Put it into a transaction group for execution, and generate a transaction group txgroup1{tx1, tx2, tx3};

The main chain node executes step S12, and when executing txgroup1{tx1, tx2, tx3}, judges whether txgroup1{tx1, tx2, tx3} includes both main chain-first parallel chain cross-chain transactions and ordinary transactions:

Since tx1 is a cross-chain transaction between the main chain and the first parachain, and tx2 and tx3 are ordinary transactions, the main chain node executes step S14, and marks txgroup1 with an execution failure flag.

PN1~PN4 synchronize txgroup1 from the main chain;

PN1 to PN4 execute txgroup1: Since txgroup1 has the flag of execution failure, the execution of txgroup1 fails.

The above-described embodiments guarantee successful execution of cross-chain transactions.

The transaction group received by the blockchain node is generated by the user's client. When generating a transaction group, the client determines whether the generated transaction group includes both the main chain-first parachain cross-chain transaction and ordinary transaction:

If yes, return a warning message.

The above embodiment will prompt the user to obtain the warning information earlier by prompting the failure. If the user modifies the transaction group in time due to the warning information, the wrong transaction group will not be sent to the blockchain and the wrongly executed transaction will not be deducted. Group fee.

Alternatively, when the transaction pool of the blockchain node receives the first transaction group, it determines whether the received transaction group includes both the main chain-first parachain cross-chain transaction and the ordinary transaction:

If yes, delete the first transaction group from the transaction pool, and return a warning message to the client that sent the first transaction group.

FIG. 2 is a flowchart of another parachain transaction group execution method provided by an embodiment of the present invention. As shown in FIG. 2 , in this embodiment, the present invention provides a parachain transaction group execution method suitable for parachain nodes, and the above method includes:

S22: Synchronize the first transaction group from the main chain;

S24: When executing the first transaction group, if the first transaction group is marked with an execution failure flag, the execution of the first transaction group fails;

For the execution principle of the parachain transaction group in the above embodiment, reference may be made to the method shown in FIG. 1 , which will not be repeated here.

The present invention also provides a parachain transaction group execution method suitable for main chain nodes, the method comprising:

S32: When executing the first transaction group, determine whether the first transaction group includes both main chain-first parachain cross-chain transactions and ordinary transactions:

If yes, go to step S34: discard the first transaction group.

The difference between the above embodiment and the method shown in FIG. 1 is that the main chain in the above embodiment does not store the first transaction group that fails to execute the certificate. If the first transaction group is not reached, the first transaction group will not be deposited. The advantage of the method shown in FIG. 1 compared with the above-mentioned embodiment is that the user can clearly know that the first transaction group is acquired and executed by the main chain node and the parachain node of the first parachain, not that it is not sent to the blockchain In the network, the user experience is better.

As shown in FIG. 3 , as another aspect, the present application also provides a device 300 including one or more central processing units (CPUs) 301 , which can operate according to a program stored in a read only memory (ROM) 302 or Various appropriate actions and processes are executed from the program loaded into the random access memory (RAM) 303 from the storage section 308 . In the RAM 303, various programs and data necessary for the operation of the device 300 are also stored. The CPU 301 , the ROM 302 , and the RAM 303 are connected to each other through a bus 304 . An input/output (I/O) interface 305 is also connected to bus 304 .

The following components are connected to the I/O interface 305: an input section 306 including a keyboard, a mouse, etc.; an output section 307 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 308 including a hard disk, etc. ; and a communication section 309 including a network interface card such as a LAN card, a modem, and the like. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I/O interface 305 as needed. A removable medium 311, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 310 as needed so that a computer program read therefrom is installed into the storage section 308 as needed.

In particular, according to an embodiment of the present disclosure, the method described in any of the above embodiments may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing any of the methods described above. In such an embodiment, the computer program may be downloaded and installed from the network via the communication portion 309 and/or installed from the removable medium 311 .

As yet another aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium may be a computer-readable storage medium included in the apparatus of the foregoing embodiment; A computer-readable storage medium in a device. The computer-readable storage medium stores one or more programs that are used by one or more processors to perform the methods described in the present application.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more logical functions for implementing the specified functions executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by dedicated hardware-based systems that perform the specified functions or operations , or can be implemented by a combination of dedicated hardware and computer instructions.

The units or modules involved in the embodiments of the present application may be implemented in a software manner, and may also be implemented in a hardware manner. The described units or modules may also be provided in the processor, for example, each of the units may be a software program provided in a computer or a mobile smart device, or may be a separately configured hardware device. Wherein, the names of these units or modules do not constitute limitations on the units or modules themselves under certain circumstances.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the concept of the present application, the above-mentioned technical features or Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims

A method for executing a parallel chain transaction group, characterized in that it is applicable to a main chain node, and the method includes:

When executing the first transaction group, determine whether the first transaction group includes both main chain-first parallel chain cross-chain transactions and ordinary transactions:

If yes, then mark the first transaction group with the flag of execution failure, so that when each parachain node of the first parachain is synchronized to the first transaction group marked with the flag, the first transaction group executes Fail.
A parachain transaction group execution method, characterized in that it is suitable for parachain nodes, the method comprising:

Synchronize the first transaction group from the main chain;

When executing the first transaction group, if the first transaction group is marked with an execution failure flag, the execution of the first transaction group fails;

Wherein, when the main chain node executes the first transaction, the identification is marked on the first transaction group when it is identified that the first transaction group includes both main chain-current parallel chain cross-chain transactions and ordinary transactions .
A device, characterized in that the device comprises:

one or more processors;

memory for storing one or more programs,

The one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of claims 1-2.
A storage medium storing a computer program, characterized in that, when the program is executed by a processor, the method according to any one of claims 1-2 is implemented.