CN112015577A

CN112015577A - Calling method and device of intelligent contract

Info

Publication number: CN112015577A
Application number: CN202011128574.9A
Authority: CN
Inventors: 卓海振
Original assignee: Alipay Hangzhou Information Technology Co Ltd
Current assignee: Alipay Hangzhou Information Technology Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2020-12-01
Anticipated expiration: 2040-10-20
Also published as: CN112015577B

Abstract

The specification provides a calling method and a calling device of an intelligent contract, which are applied to a management platform for managing node equipment of a block chain, wherein value anchoring is carried out on system resources and virtual resources carried by the node equipment of the block chain; the method comprises the following steps: acquiring intelligent contract calling transaction triggered by a block chain client, wherein the intelligent contract calling transaction comprises calling parameters of an intelligent contract; calculating a first amount of system resources of a node device of the blockchain consumed for processing the smart contract invocation transaction and determining a second amount of the virtual resources anchored with the first amount of system resource value such that the virtual resource account of the user is deducted by the second amount of virtual resources; and sending the intelligent contract calling transaction to the blockchain so as to enable the node equipment of the blockchain to execute the intelligent contract calling transaction based on the calling parameter.

Description

Calling method and device of intelligent contract

Technical Field

One or more embodiments of the present disclosure relate to the field of blockchain technologies, and in particular, to a method and an apparatus for invoking an intelligent contract.

Background

The block chain technology, also called distributed ledger technology, is an emerging technology in which several computing devices participate in "accounting" together, and a complete distributed database is maintained together. The blockchain technology has been widely used in many fields due to its characteristics of decentralization, transparency, participation of each computing device in database records, and rapid data synchronization between computing devices.

Disclosure of Invention

In view of the above, one or more embodiments of the present specification provide a method, an apparatus, and a computer device for invoking an intelligent contract.

In order to achieve the above purpose, one or more embodiments of the present specification provide the following technical solutions:

according to a first aspect of one or more embodiments of the present specification, a method for calling an intelligent contract is provided, which is applied to a management platform that performs management on a node device of a block chain, where a system resource and a virtual resource carried by the node device of the block chain are subjected to value anchoring; the method comprises the following steps:

acquiring intelligent contract calling transaction triggered by a block chain client, wherein the intelligent contract calling transaction comprises calling parameters of an intelligent contract;

calculating a first amount of system resources of a node device of the blockchain consumed to process the smart contract invocation transaction and determining a second amount of the virtual resources anchored with the first amount of system resource value;

after the virtual resource account of the user is deducted by the second amount of virtual resources, sending the intelligent contract invocation transaction to the blockchain, so that a node device of the blockchain executes the intelligent contract invocation transaction based on the invocation parameter, and storing an execution result of the intelligent contract invocation transaction in the blockchain.

According to a second aspect of one or more embodiments of the present specification, a method for calling an intelligent contract is provided, where the method is applied to a management platform that performs management on a node device of a block chain, and a system resource and a virtual resource carried by the node device of the block chain are subjected to value anchoring; the method comprises the following steps:

sending the intelligent contract calling transaction to the blockchain so that the node equipment of the blockchain executes the intelligent contract calling transaction based on the calling parameter, and storing the execution result of the intelligent contract calling transaction in the blockchain;

calculating a first amount of system resources of a node device of the blockchain consumed for processing the smart contract invocation transaction, and determining a second amount of the virtual resources anchored with the first amount of system resource value, so that the user's virtual resource account is deducted by the second amount of virtual resources.

According to a third aspect of one or more embodiments of the present specification, an intelligent contract invoking apparatus is provided, which is applied to a management platform that performs management on a node device of a block chain, where a system resource and a virtual resource carried by the node device of the block chain are subjected to value anchoring; the device comprises:

the acquisition unit is used for acquiring intelligent contract calling transactions triggered by a block chain client, and the intelligent contract calling transactions comprise calling parameters of intelligent contracts;

a calculating unit, configured to calculate a first amount of system resources of a node device of the blockchain consumed for processing the smart contract invocation transaction, and determine a second amount of the virtual resources anchored with the first amount of system resource values;

and the sending unit is used for sending the intelligent contract calling transaction to the block chain after the second amount of virtual resources are deducted from the virtual resource account of the user, so that the node equipment of the block chain executes the intelligent contract calling transaction based on the calling parameters, and an execution result of the intelligent contract calling transaction is stored in the block chain.

According to a fourth aspect of one or more embodiments of the present specification, a platform is provided, in which a system resource and a virtual resource carried by a node device of a blockchain are value-anchored; the device comprises:

the sending unit is used for sending the intelligent contract calling transaction to the block chain so as to enable the node equipment of the block chain to execute the intelligent contract calling transaction based on the calling parameter, and storing the execution result of the intelligent contract calling transaction in the block chain;

a calculating unit, configured to calculate a first amount of system resources of a node device of the block chain consumed for processing the smart contract invocation transaction after the node device executes the smart contract invocation transaction based on the invocation parameter, and determine a second amount of the virtual resources anchored with the system resource value of the first amount, so that the virtual resource account of the user is deducted by the second amount of the virtual resources.

According to a fifth aspect of one or more embodiments of the present specification, there is provided a computer device comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; when the processor runs the computer program, the method for calling the intelligent contract executed by the management platform according to the embodiment of the first aspect is executed.

According to a sixth aspect of one or more embodiments of the present specification, there is provided a computer apparatus comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; when the processor runs the computer program, the method for calling the intelligent contract executed by the management platform according to the embodiment of the second aspect is executed.

Based on the method, the apparatus, the computer device, and the computer-readable storage medium for invoking an intelligent contract according to one or more embodiments, a system resource hosted by a node device of a block chain may be value-anchored with a virtual resource, so that a first amount of the system resource of the node device of the block chain consumed by processing an intelligent contract invocation transaction based on the node device may be anchored, a second amount of the virtual resource may be anchored, and the second amount of the virtual resource may be deducted from a virtual resource account of a user.

Drawings

FIG. 1 is a schematic diagram of creating an intelligent contract provided by an exemplary embodiment;

FIG. 2 is a schematic diagram of invoking an intelligent contract, provided by an exemplary embodiment;

FIG. 3 is a schematic diagram of creating an intelligent contract and invoking an intelligent contract provided by an exemplary embodiment;

FIG. 4 is a flowchart illustration of a method of invoking an intelligent contract, provided by an exemplary embodiment;

FIG. 5 is a schematic diagram of a calling device applied to a smart contract on a management platform side, provided by an exemplary embodiment;

FIG. 6 is a schematic diagram of a calling device applied to a smart contract on a management platform side, as provided by yet another illustrative embodiment;

fig. 7 is a hardware block diagram of an embodiment of a calling device running a smart contract as provided herein.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of one or more embodiments of the specification, as detailed in the claims which follow.

It should be noted that: in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described herein. In some other embodiments, the method may include more or fewer steps than those described herein. Moreover, a single step described in this specification may be broken down into multiple steps for description in other embodiments; multiple steps described in this specification may be combined into a single step in other embodiments.

The block chain or block chain network described in one or more embodiments of the present specification may specifically refer to a P2P network system having a distributed data storage structure, where each node device achieves through a common recognition mechanism, the book data in the block chain is distributed within temporally consecutive "blocks", and the latter block may include a data digest of the former block, and according to a difference of a specific common recognition mechanism (such as POW, POS, DPOS, PBFT, or the like), a full backup of data of all or part of nodes is achieved.

Blockchains are generally divided into three types: public chain (Public Blockchain), Private chain (Private Blockchain) and alliance chain (Consortium Blockchain). Furthermore, there may be a combination of the above types, such as private chain + federation chain, federation chain + public chain, and so on.

Among them, the most decentralized is the public chain. The public chain is represented by bitcoin and ether house, and participants (also called nodes in the block chain) joining the public chain can read data records on the chain, participate in transactions, compete for accounting rights of new blocks, and the like. Moreover, each node can freely join or leave the network and perform related operations.

Private chains are the opposite, with the network's write rights controlled by an organization or organization and the data read rights specified by the organization. Briefly, a private chain may be a weakly centralized system with strict restrictions on nodes and a small number of nodes. This type of blockchain is more suitable for use within a particular establishment.

A federation chain is a block chain between a public chain and a private chain, and "partial decentralization" can be achieved. Each node in a federation chain typically has a physical organization or organization corresponding to it; the nodes are authorized to join the network and form a benefit-related alliance, and block chain operation is maintained together.

It is contemplated that the embodiments provided herein can be implemented in any suitable type of blockchain network.

The computing device may construct the data into a standard transaction (transaction) format supported by the blockchain, then issue the transaction to the blockchain, perform consensus processing on the received transaction by the node devices in the blockchain, and package the transaction into a block by the node devices serving as accounting nodes in the blockchain after the consensus is achieved, and perform persistent evidence storage in the blockchain.

Regardless of which consensus algorithm is adopted by the block chain, the accounting node can pack the received transaction to generate a latest block and send the latest block to other node devices for consensus verification. If the latest block is received by other node equipment and no problem is proved, the latest block can be added to the tail of the original block chain, so that the accounting process of the block chain is completed. The transactions contained in the block may also be performed during the process of the other nodes verifying the new block sent by the accounting node.

It should be noted that, each time a block chain generates a latest block, after a transaction in the latest block is executed, the corresponding status of the executed transactions in the block chain changes accordingly, for example, in the block chain structured by an account model, the account status of an external account or an intelligent contract account usually changes correspondingly with the execution of the transaction.

For example, when a "transfer transaction" is completed in a block, the balances of the transferring party account and the transferring party account associated with the "transfer transaction" (i.e., the field values of the Balance fields of these accounts) are usually changed.

For another example, the "intelligent contract invocation transaction" in the block is used to invoke an intelligent contract deployed on the blockchain, invoke the intelligent contract in the EVM corresponding to the node device to execute the "intelligent contract invocation transaction", and update the account status of the intelligent contract account in the account of the intelligent contract after the execution of the intelligent contract invocation transaction.

In practical applications, whether public, private, or alliance, it is possible to provide the functionality of a Smart contract (Smart contract). An intelligent contract on a blockchain is a contract on a blockchain that can be executed triggered by a transaction. An intelligent contract may be defined in the form of code.

Taking an Etherhouse as an example, a user is supported to create and call some complex logic in the Etherhouse network. The ethernet workshop is used as a programmable block chain, and the core of the ethernet workshop is an ethernet workshop virtual machine (EVM), and each ethernet workshop node can run the EVM. The EVM is a well-behaved virtual machine through which various complex logic can be implemented. The user issuing and invoking smart contracts in the etherhouse is running on the EVM. In fact, the EVM directly runs virtual machine code (virtual machine bytecode, hereinafter referred to as "bytecode"), so the intelligent contract deployed on the blockchain may be bytecode.

After Bob sends a Transaction (Transaction) containing information to create a smart contract to the ethernet network, each node can execute the Transaction in the EVM, as shown in fig. 1. The From field of the transaction in the figure is used for recording the address of the account initiating the creation of the intelligent contract, the contract code stored in the field value of the Data field of the transaction can be byte code, and the field value of the To field of the transaction is a null account. After the nodes reach the agreement through the consensus mechanism, the intelligent contract is successfully created, and the follow-up user can call the intelligent contract.

After the intelligent contract is established, a contract account corresponding to the intelligent contract appears on the block chain, and the block chain has a specific address; for example, "0 x68e12cf284 …" in each node in fig. 1 represents the address of the contract account created; the contract Code (Code) and account store (Storage) will be maintained in the account store for that contract account. The behavior of the intelligent contract is controlled by the contract code, while the account storage of the intelligent contract preserves the state of the contract. In other words, the intelligent contract causes a virtual account to be generated on the blockchain that contains the contract code and account storage.

As mentioned above, the Data field containing the transaction that created the intelligent contract may hold the byte code of the intelligent contract. A bytecode consists of a series of bytes, each of which can identify an operation. Based on the multiple considerations of development efficiency, readability and the like, a developer can select a high-level language to write intelligent contract codes instead of directly writing byte codes. For example, the high-level language may employ a language such as Solidity, Serpent, LLL, and the like. For intelligent contract code written in a high-level language, the intelligent contract code can be compiled by a compiler to generate byte codes which can be deployed on a blockchain.

Taking the Solidity language as an example, the contract code written by it is very similar to a Class (Class) in the object-oriented programming language, and various members including state variables, functions, function modifiers, events, etc. can be declared in one contract. A state variable is a value permanently stored in an account Storage (Storage) field of an intelligent contract to save the state of the contract.

As shown in FIG. 2, still taking the Etherhouse as an example, after Bob sends a transaction containing the information of the calling intelligent contract to the Etherhouse network, each node can execute the transaction in the EVM. The From field of the transaction in the figure is used for recording the address of the account initiating the intelligent contract calling, the To field is used for recording the address of the intelligent contract called, and the Data field of the transaction is used for recording the method and the parameters for calling the intelligent contract. After invoking the smart contract, the account status of the contract account may change. Subsequently, a client may check the account status of the contract account through the accessed block link points, for example, the account status may be stored in the Storage tree of the intelligent contract in the form of a Key-Value pair. The results of the execution of the transaction that invokes the smart contract, which may be in the form of a transaction receipt (receipt), are stored in the MPT receipt tree.

The intelligent contract can be independently executed at each node in the blockchain network in a specified mode, and all execution records and data are stored on the blockchain, so that after the transaction is executed, transaction certificates which cannot be tampered and lost are stored on the blockchain.

A schematic diagram of creating an intelligent contract and invoking the intelligent contract is shown in fig. 3. An intelligent contract is created in an Ethernet workshop and needs to be subjected to the processes of compiling the intelligent contract, changing the intelligent contract into byte codes, deploying the intelligent contract to a block chain and the like. The intelligent contract is called in the Ethernet workshop, a transaction pointing to the intelligent contract address is initiated, the EVM of each node can respectively execute the transaction, and the intelligent contract code is distributed and operated in the virtual machine of each node in the Ethernet workshop network.

For accounts in a blockchain, the account status of the account is usually maintained through a structure. When a transaction in a block is executed, the status of the account associated with the transaction in the block chain is also typically changed.

Taking etherhouses as an example, the structure of an account usually includes fields such as Balance, Nonce, Code and Storage. Wherein:

a Balance field for maintaining the current account Balance of the account;

a Nonce field for maintaining a number of transactions for the account; the counter is used for guaranteeing that each transaction can be processed only once, and replay attack is effectively avoided;

a Code field for maintaining a contract Code for the account; in practical applications, only the hash value of the contract Code is typically maintained in the Code field; thus, the Code field is also commonly referred to as the Codhash field.

A Storage field for maintaining the Storage contents of the account (default field value is null); for a contract account, a separate storage space is usually allocated to store the storage content of the contract account; this separate storage space is often referred to as the account storage of the contract account. The storage content of the contract account is usually constructed into a data structure of an MPT (Merkle Patricia Trie) tree and stored in the independent storage space; in which, the Storage content based on the contract account is constructed into an MPT tree, which is also commonly referred to as a Storage tree. Whereas the Storage field typically maintains only the root node of the Storage tree; thus, the Storage field is also commonly referred to as the Storage root field.

Wherein, for the external account, the field values of the Code field and the Storage field shown above are both null values.

For most blockchain models, Merkle trees are typically used; alternatively, the data is stored and maintained based on the data structure of the Merkle tree. Taking etherhouses as an example, the etherhouses use MPT tree (a Merkle tree variation) as a data organization form for organizing and managing important data such as account status, transaction information, and the like.

The Etherhouse designs three MPT trees, namely an MPT state tree, an MPT transaction tree and an MPT receipt tree, aiming at data needing to be stored and maintained in a block chain. In addition to the three MPT trees, there is actually a Storage tree constructed based on the Storage content of the contract account.

An MPT state tree, which is an MPT tree organized by account state data of all accounts in a blockchain; an MPT transaction tree, which is an MPT tree organized by transaction (transaction) data in a blockchain; the MPT receipt tree is organized into transaction (receipt) receipts corresponding to each transaction generated after the transactions in the block are executed. The hash values of the root nodes of the MPT state tree, the MPT transaction tree, and the MPT receipt tree shown above are eventually added to the block header of the corresponding block.

The MPT transaction tree and the MPT receipt tree correspond to the blocks, namely each block has the MPT transaction tree and the MPT receipt tree. For the MPT transaction tree, the MPT receipt tree and the MPT state tree which are organized, the MPT transaction tree, the MPT receipt tree and the MPT state tree are finally stored in a Key-Value type database (such as a levelDB) which adopts a multi-level data storage structure.

In the public chain field, the miners are often encouraged to carry out block chaining out through gas, token and other modes, and the miners can select higher-commission-cost transactions such as gas or token to preferentially pack in blocks so as to increase self income; for the non-miner nodes, although the storage and consensus resources are contributed, corresponding benefits are not obtained. In a token-free (token) -based blockchain model, such as a federation chain, especially in an open federation chain environment, how to count blockchain resources provided by node devices and cover corresponding node costs is also an urgent issue to be solved. At present, there is no method for resource management and charging for users of the blockchain based on the use or occupation of blockchain resources.

In view of the above, one or more embodiments of the present specification provide various resource charging approaches in a blockchain system. It is contemplated that the embodiments provided herein can be implemented in a suitable type of blockchain network, such as a public chain, a federation chain, a private chain, and so forth.

The management platform according to one or more embodiments provided in this specification may include a platform that is provided in or connected to each node device of the blockchain, so as to manage each node device of the blockchain. Optionally, the management platform includes a cloud computing management platform, and correspondingly, the node device of the block chain includes a virtual machine created on a physical host managed by the cloud computing management platform.

The blockchain client described in one or more embodiments provided in this specification may be connected to a node device of a blockchain through the management platform, so as to send a transaction to a blockchain network or obtain a transaction execution result in the blockchain network based on communication with the management platform.

In the blockchain provided in this specification, the management platform performs value anchoring on system resources and virtual resources carried by node devices of the blockchain.

The virtual resources may include digitized forms of real assets circulating under the blockchain, such as assets in the form of currency, real estate, stocks, bonds, loan contracts, notes, accounts receivable, and the like; virtual resources circulating over the blockchain may also be included, such as virtual tokens (e.g., bitcoins, ethercoins, etc.) that begin circulating over the blockchain based on a mine excavation reward that is earned by a billing node (or miner node) of the blockchain packing and successfully adding blocks. Virtual tokens generated based on mineworker node mining typically do not have a value-anchoring relationship with real assets outside the chain; thus, in yet another illustrative embodiment, virtual resources published on a blockchain may include blockchain assets having a value-anchoring relationship with off-chain real assets held by a user, and virtual resources anchored to the frozen real assets and capable of circulation on the chain may be published on the chain by freezing real-world real assets (including assets in the form of currency, real property, stocks, loan contracts, tickets, accounts receivable, and the like).

When the method is realized, the user client side can perform an asset freezing exchange process with the management platform, freeze a certain amount of real assets and send a freezing certificate to the management platform; after receiving the frozen voucher, the management platform can instruct the node device to add virtual resources corresponding to the frozen real asset amount value to the balance of the user's blockchain account on the blockchain based on the frozen voucher.

The virtual resource corresponding to the frozen real asset amount value is added into the balance of the user's blockchain account based on the frozen certificate, and the method can be further realized by the interaction between the user and an intelligent contract: the management platform triggers a virtual resource exchange transaction sent to a blockchain network, wherein the virtual resource exchange transaction comprises the asset freezing voucher; responding to the virtual resource exchange transaction, the node equipment of the blockchain calls a virtual resource exchange contract deployed on the blockchain, executes the resource exchange logic declared by the intelligent contract, and adds virtual resources corresponding to the real asset amount value frozen by the asset freezing voucher into the account balance of the blockchain of the user.

Based on the mode, the user can obtain virtual resources which can be anchored with the value of the real assets in the block chain network based on the real assets held by the user, and the virtual resources can be expressed as the balance of the account on the chain of the user.

In the blockchain network system, the system resources provided by the blockchain node devices for the blockchain service can be value-anchored with the virtual resources. For example, the storage resources provided by the node device for the data on the blockchain may perform value anchoring with the virtual resources, and the blockchain data per storage unit capacity may obtain the virtual resources corresponding thereto; for another example, the CPU computational resources provided by the node device for executing any transaction on the blockchain may perform value anchoring with the virtual resources, and each CPU instruction set of the execution unit number may obtain the virtual resources corresponding thereto; for another example, the node device may perform value anchoring with the virtual resource for a network resource provided by broadcast or consensus of any transaction on the block chain, and may obtain the corresponding virtual resource based on network traffic consumed in the broadcast or consensus process of the uplink transaction.

The block chain developer or the management platform may quantify the system resources in the form of the storage resources, the computing resources, the network resources, and the like, and price the number of virtual resources corresponding to each unit of the storage resources, the computing resources, the network resources, or the system resources in other forms in the block chain network. For a federation chain, whose federation members are relatively fixed, the system resource pricing resulting from the anchoring can remain fixed for a longer period of time; for a public link system, nodes enter or exit a blockchain network more frequently, and after a blockchain developer performs unit pricing on the system resources in various forms, the blockchain developer performs real-time virtual resource transfer based on the blockchain scale when a user uses the blockchain, or performs periodic virtual resource transfer according to a shorter period. Those skilled in the art can also deduct virtual resources from the actual cost requirement to the user for the blockchain service provided by the blockchain node device based on any form of system resources having a value anchor relationship with the virtual resources, which is not limited in the present specification.

As shown in fig. 4, the method for invoking an intelligent contract provided in an exemplary embodiment of the present specification, executed by the management platform, may include:

step 402, acquiring an intelligent contract calling transaction triggered by a blockchain client, wherein the intelligent contract calling transaction comprises a calling parameter of an intelligent contract.

The calling parameter of the intelligent contract may include information such as an interface name or an input parameter of the intelligent contract to be called. The embodiment does not limit the builder identity of the intelligent contract invocation transaction described above. In an illustrated embodiment, the intelligent contract invoking transaction may be constructed by the blockchain client, and after construction, the intelligent contract invoking transaction is sent to the management platform based on a trigger operation of a user at the client, so that the management platform may forward the transaction to a blockchain network after acquiring the intelligent contract invoking transaction.

In yet another illustrated embodiment, the blockchain client may send the invocation parameter of the intelligent contract to a management platform to trigger the management platform to construct an intelligent contract invocation transaction based on the invocation parameter of the intelligent contract, and send the constructed intelligent contract invocation transaction to a blockchain network.

Step 404, calculating a first amount of system resources of a node device of the blockchain consumed for processing the intelligent contract invocation transaction, and determining a second amount of the virtual resources anchored with the first amount of system resource values.

The process of processing the intelligent contract calling transaction by the node equipment of the block chain can comprise one or more of receiving, forwarding (broadcasting) the intelligent contract calling transaction, performing consensus verification on the intelligent contract calling transaction, executing the intelligent contract calling transaction based on the calling parameters, storing the calling execution result of the intelligent contract into a state database of the block chain, and collecting the intelligent contract calling transaction in a new block and other processes. Because the value of the system resources carried by the node devices is anchored with the virtual resources, and the node devices of the block chain provide the system resources of the node devices in the whole process of processing the intelligent contract calling transaction, the management platform can calculate and determine a second amount of virtual resources anchored with the value of the first amount of system resources based on the first amount of system resources consumed or provided by the node devices in the process of processing the intelligent contract calling transaction.

Specifically, the processing of the system resource of the node device consumed by the intelligent contract invocation transaction may include one or more of the following:

processing computing resources of the node device consumed by the intelligent contract invocation transaction, wherein the computing resources can comprise instruction numbers in a CPU instruction set consumed by the node device for executing the intelligent contract invocation transaction based on the invocation parameter;

processing network resources of node equipment consumed by the intelligent contract calling transaction, wherein the network resources can comprise network bandwidth of a block chain consumed in the process of transmitting the intelligent contract calling transaction in broadcasting, consensus and the like, and the network resources are positively correlated with the number of nodes of the block chain;

and processing the storage resources of the node equipment consumed by the intelligent contract calling transaction, wherein the storage resources can comprise the storage space required by the node equipment for storing the intelligent contract calling transaction or the storage space newly occupied by the intelligent contract after executing the intelligent contract calling transaction based on the calling parameters.

The present embodiment does not specifically limit the form of the system resource, and the management platform may receive, based on the system resource in another form of the block link point device consumed in the intelligent contract invoking process, the virtual resource anchored to the system resource in the form, in addition to the computing resource, the network resource, and the storage resource.

In an illustrated embodiment, a calculation model may be deployed in the management platform or in a bottom layer protocol of the blockchain, so as to calculate a quantity of virtual resources anchored to a system resource value of a node device consumed for processing the intelligent contract invocation transaction, and after the management platform obtains the intelligent contract invocation transaction triggered by the blockchain client, the management platform may calculate, based on invoking the calculation model, a second quantity of virtual resources corresponding to system resources consumed for processing the intelligent contract invocation transaction.

Or, an intelligent contract (hereinafter referred to as a resource computation contract) for computing virtual resource consumption for the intelligent contract invocation transaction may be further deployed on the block chain, and the execution logic corresponding to the contract code of the resource computation contract includes resource computation logic for computing the amount of virtual resources that are anchored in value with the system resources of the node device consumed for processing the intelligent contract invocation transaction;

accordingly, the above management platform calculating a first amount of system resources of the node device consumed for processing the smart contract invocation transaction and determining a second amount of the virtual resources anchored with the first amount of system resource value includes:

invoking the resource computing contract, executing the billing logic, computing a first amount of system resources of a node device consumed to execute the smart contract invocation transaction, and determining a second amount of the virtual resources anchored to the first amount of system resource values.

It should be noted that, when the management platform invokes the resource calculation intelligent contract to execute the resource calculation logic, a Local Transaction (Local Transaction or Local call) may be constructed in response to the intelligent contract creation Transaction, and the resource calculation intelligent contract deployed on the blockchain is invoked locally to determine the first amount of the virtual resource anchored by the system resource value of the node device consumed for executing the intelligent contract creation Transaction. At this time, the management platform may obtain the call execution result of the resource computation contract locally without recognizing the call execution result of the resource computation contract on the blockchain.

Specifically, when the computing resources, network resources, and storage resources consumed by the node device of the blockchain to process the intelligent contract invocation transaction are all included in the computing process of system resource consumption, the content, included in the resource computing logic deployed by the computing model or the resource computing contract, of calculating a first amount of system resources of the node device consumed by processing the intelligent contract invocation transaction, and determining a second amount of the virtual resources anchored to the first amount of system resource value may include:

calculating a third amount of computing resources of the node device consumed for processing the smart contract invocation transaction and determining a fourth amount of the virtual resources anchored with the third amount of computing resource value; the computing resource may include a number of instructions in the CPU instruction set that are consumed by the node device to execute the smart contract invocation transaction based on the invocation parameter. For example, the blockchain system may price the computing resources provided by the node devices: m (virtual resource units)/instruction, the management platform may first calculate the number N of instructions in the CPU instruction set consumed to execute the intelligent contract creation transaction, and then calculate the number of virtual resources corresponding to the N instructions, anchored to the calculation resource value of the node device consumed to process the intelligent contract creation transaction: m N (virtual resource units).

Calculating a fifth amount of network resources of the node device consumed for processing the smart contract invocation transaction, and determining a sixth amount of the virtual resources anchored with the fifth amount of network resource values; the network resource may include a blockchain network traffic consumed during broadcast, consensus, etc. transmission of the transaction, and the network resource is positively correlated to the number of nodes in the blockchain. For example, the blockchain system may price network resources provided by the node devices: m (virtual resource units)/megaflow, the management platform may first calculate a total network flow N megameters consumed to execute the intelligent contract creation transaction, and then calculate a number of virtual resources corresponding to the N megaflows, anchored to a network resource value of a node device consumed to process the intelligent contract creation transaction: m N (virtual resource units).

Calculating a seventh amount of storage resources of the node device consumed for processing the smart contract invocation transaction and determining an eighth amount of the virtual resources anchored with the seventh amount of storage resource value; the storage resource may include a storage space required for storing the intelligent contract invoking transaction, or a storage resource of a node device newly occupied by the intelligent contract account after executing the intelligent contract invoking transaction based on the invoking parameter. For example, the blockchain system may price the storage resources provided by the node devices: m (virtual resource unit)/Gb, the node device adds storage resources NGb (second) of the node device occupied by the intelligent contract account after executing the intelligent contract invocation transaction based on the invocation parameter, and the eighth quantity of virtual resources that the management platform can calculate and anchor with the storage resource value of the node device consumed for processing the intelligent contract creation transaction includes: m N (virtual resource units).

Based on the fourth quantity, the sixth quantity, and the eighth quantity, a sum of virtual resources anchored to system resource values of node devices consumed to process the smart contract creation transaction may be determined to be a sum of the fourth quantity, the sixth quantity, and the eighth quantity.

Step 406, obtaining a message that the virtual resource account of the user is deducted from the second amount of virtual resources.

The virtual resource account of the user is an account storing the same type of resources as the virtual resources; when the virtual resource is an out-of-chain real resource, the virtual resource account may include a currency account (such as a bank account), or a virtual currency or virtual point account that is established on the management platform by the user and exchanged by using currency; when the virtual resource is a virtual resource issued on a blockchain, the virtual resource account may include a user's blockchain account.

When the virtual resource account of the user is a money account, the entity that deducts the second amount of virtual resources from the virtual resource account of the user may be a financial institution such as a bank, and may transfer the deducted second amount of virtual resources to a money account corresponding to a management platform; when the virtual resource account of the user is a virtual point account established on the management platform, the virtual points in the virtual point account are exchanged by the user using money, and at this time, the entity for deducting the second amount of virtual resources from the virtual resource account of the user may be the management platform; when the virtual resource account of the user is a blockchain account, the entity that performs deduction of the second amount of virtual resources from the virtual resource account of the user may be a node device of a blockchain, and may transfer the deducted second amount of virtual resources to a blockchain account corresponding to a management platform.

The present embodiment does not limit the execution body, the deduction time and the specific manner of deducting the second amount of virtual resources from the virtual resource account of the user.

Step 408, sending the intelligent contract invoking transaction to the blockchain, so that the node device of the blockchain executes the intelligent contract invoking transaction based on the invoking parameter, and storing the execution result of the intelligent contract invoking transaction in the blockchain.

The management platform sends the intelligent contract calling transaction to a blockchain, so that the intelligent contract calling transaction can be broadcasted in the blockchain network, subjected to consensus verification, and executed by node equipment of the blockchain based on the calling parameters after the consensus verification is passed, so that the execution result of the intelligent contract calling transaction is stored in the blockchain.

As previously described, a structure of a smart contract account may generally include fields such as Balance, Nonce, Code, and Storage. A Balance field for maintaining the current account Balance of the account; a Nonce field for maintaining a number of transactions for the account; the counter is used for guaranteeing that each transaction can be processed only once, and replay attack is effectively avoided; a Code field for maintaining a contract Code for the account; in practice, only the hash value of the contract Code is typically maintained in the Code field (the Code of the smart contract is then stored in the block that contains the smart contract invocation transaction).

The node device of the block chain executes the smart contract call transaction in the virtual machine based on the call parameter, and stores the execution result of the smart contract call transaction in the block chain, for example, the node device may include a transaction receipt (receive) including the execution result of the smart contract call transaction in an MPT receipt tree of the block chain, or may store a status result value of each parameter variable in the smart contract in a Storage tree of a smart contract account after the smart contract call transaction is executed, so that the management platform may return the execution result of the smart contract call transaction or a prompt of successful execution to a block chain client that transmits the smart contract call transaction based on the status result of each parameter variable included in the transaction receipt or the smart contract account.

Based on the method for invoking an intelligent contract according to one or more embodiments, the management platform performs value anchoring on the system resources loaded by the node devices of the block chain and the virtual resources published on the block chain, so that a first amount of system resources of the node devices consumed by the intelligent contract invocation transaction processed by the node devices are anchored, a second amount of virtual resources are anchored, and the second amount of virtual resources are charged from the user on behalf of the node devices of the block chain; since the user randomly calls the intelligent contract in the non-charging mode easily causes waste of the blockchain system resources, one or more embodiments described herein reduce the waste of the blockchain system resources.

It should be noted that the execution sequence of

steps

404, 406 and 408 is not limited in the above embodiment.

In an illustrated embodiment, after acquiring an intelligent contract invocation transaction triggered by a blockchain client, a management platform calculates a first quantity of system resources of a node device of a blockchain consumed for processing the intelligent contract invocation transaction, and determines a second quantity of virtual resources anchored with the first quantity of system resource values; after obtaining the message that the virtual resource account of the user is deducted by the second amount of virtual resources, sending the intelligent contract invocation transaction to the blockchain, so that the node equipment of the blockchain executes the intelligent contract invocation transaction based on the invocation parameter, and storing the execution result of the intelligent contract invocation transaction in the blockchain.

After calculating the first amount of the system resources of the node device of the block chain consumed for processing the intelligent contract invocation transaction and determining the second amount of the virtual resources to be transferred by the user, the management platform may send a payment instruction of the second amount of the virtual resources to the user client, for example, push a cash money payment page on a user interface of the client, so as to complete the deduction of the second amount of the virtual resources from a cash money account of the user by a financial institution corresponding to the cash money account of the user in response to payment verification information (such as a digital password and biological identification information) input by the user at the client. For another example, a virtual point payment page circulated on the management platform is pushed on a user interface of the client, where the virtual point is obtained by the user exchanging money and cash on the management platform and is stored in a virtual point account opened by the user on the management platform, so that the management platform completes deduction of the second amount of virtual resources from the virtual point account of the user on the management platform in response to payment verification information (such as a digital password and biometric identification information) input by the user on the client.

When the virtual resource is a virtual resource issued on a blockchain, the management platform may construct a page for the transfer transaction on the blockchain, which is pushed on a user interface of the client, so that the blockchain client may further send the transfer transaction to the blockchain through the management platform, so that after the transfer transaction is verified by the blockchain, the node device of the blockchain deducts the virtual resource of the second quantity from the blockchain account of the user, or deducts the virtual resource of the second quantity from the blockchain account of the user and transfers the virtual resource of the second quantity to the blockchain account corresponding to the management platform. Thereafter, the management platform obtains a message from the node device whether the transfer transaction was successfully executed.

If the deduction process fails due to the fact that the number of the virtual resources held by the virtual resource account of the user is smaller than the second number, or the management platform does not acquire a message that the virtual resource account of the client user is deducted from the second number of the virtual resources within a preset time limit, the management platform can return a prompt that the intelligent contract calls the transaction execution failure to the blockchain client.

It should be noted that, because the system resources consumed by the node device to execute the intelligent contract invoking transaction include various forms such as computing resources, network resources, storage resources, and the like, some resource forms may be calculated based on the code of the intelligent contract invoking transaction before the intelligent contract invoking transaction is executed, and some resource forms may be accurately known only after the intelligent contract invoking transaction is executed. Thus, the deducted second amount of virtual resources in step 406 of this embodiment may be based on an estimate of system resources that may need to be consumed to execute the intelligent contract invocation transaction; the management platform may further monitor, after the intelligent contract call transaction is successfully executed, actual system resource loss of the statistical node device in the process of processing the intelligent contract call transaction, to check whether the storage resource (e.g., storage resource) consumed by the intelligent contract after the call obviously does not conform to the estimated system resource, so as to perform corresponding virtual resource supplement or return operation, which is not limited in this specification.

In another illustrated embodiment, after acquiring an intelligent contract invoking transaction triggered by a blockchain client, a management platform first sends the intelligent contract invoking transaction to a blockchain, so that a node device of the blockchain executes the intelligent contract invoking transaction based on the invoking parameter, and stores an execution result of the intelligent contract invoking transaction in the blockchain; and then calculating a first quantity of system resources of the node equipment of the block chain consumed by processing the intelligent contract calling transaction, and determining a second quantity of the virtual resources anchored with the system resource value of the first quantity, so that the virtual resource account of the user is deducted by the second quantity of the virtual resources.

The process of calculating the first amount of the system resources of the node device of the block chain consumed for processing the intelligent contract invocation transaction and determining the second amount of the virtual resources to be transferred by the user may be performed based on the statistical calculation of the system resources actually consumed for processing the intelligent contract invocation transaction by the node device of the block chain, which is monitored by the management platform or is known by communication with the node device.

When the virtual resource is an entity asset outside the blockchain or the management platform issues circulating credits or tokens anchored to the entity asset, after learning that the node device temporarily stores a transaction receipt (receive) corresponding to the intelligent contract invocation transaction in the memory, the management platform may send a payment instruction of a second amount of virtual resources to the client, for example, pushing a cash currency payment page on a user interface of the client, issuing a circulating virtual point payment page by the management platform, in response to the payment verification information (such as a digital password and biometric identification information) input by the user at the client, the financial institution corresponding to the cash money account of the user performs the deduction of the second amount of virtual resources from the cash money account of the user or from the virtual credit account of the user at the management platform by the management platform. When the virtual resource is currency cash, the second amount of virtual resource can be transferred to a currency cash account corresponding to the management platform.

If the second amount of virtual resources is successfully deducted from the cash money account of the user or the virtual resources held by the virtual points account of the management platform by the user, the node device may save a transaction receipt (receipt) generated after the intelligent contract invocation transaction is executed in an MPT receipt tree of the blockchain; at this time, the management platform may return a prompt indicating that the intelligent contract call transaction is completed to the blockchain client, or return an execution result of the intelligent contract call transaction included in the transaction receipt;

if the amount of the cash money account of the user, or the amount of the virtual resources held by the user in the virtual point account of the management platform is smaller than the second amount, or the second amount of the virtual resources is not successfully deducted within a preset payment term, the management platform may instruct the node device to delete the intelligent contract from the memory to call a transaction receipt (receipt) corresponding to the transaction; at this time, the management platform may return a prompt that the intelligent contract invocation transaction execution fails to the blockchain client.

When the virtual resource is a virtual resource issued on a blockchain, the intelligent contract invocation transaction may further include an account identifier of a blockchain account of the user. The account identifier is an account identifier of a user account for which the transaction payment of the second amount of virtual resources is invoked for the smart contract; the account identification may include the account identification of the intelligent contract invoking transaction publisher, and may also include account identifications of other users specified by the intelligent contract invoking transaction publisher.

In this embodiment, after the node device temporarily stores the account status of the smart contract after executing the smart contract call transaction and a transaction receipt (receive) corresponding to the smart contract call transaction in the memory, the second amount of virtual resources may be deducted from the blockchain account specified by the smart contract call transaction including the account identifier, or the second amount of virtual resources may be deducted from the blockchain account specified by the smart contract call transaction including the account identifier, and the second amount of virtual resources may be added to the blockchain account corresponding to the management platform.

If the second amount of virtual resources are successfully deducted from the virtual resources held by the blockchain account corresponding to the account identifier, the node equipment can update the account state of the intelligent contract in the blockchain, and store a transaction receipt (receive) generated after the intelligent contract is executed to call the transaction in an MPT receipt tree of the blockchain; at this time, the management platform may return a prompt of the execution completion of the intelligent contract calling transaction or the execution result of the intelligent contract calling transaction to the blockchain client;

if the amount of the virtual resources held by the blockchain account corresponding to the account identifier is less than the second amount, the node device cannot deduct the second amount of the virtual resources from the blockchain account corresponding to the account identifier, and at this time, the node device may delete the account status of the intelligent contract stored in the memory and represent that the intelligent contract calls a transaction receipt (receipt) corresponding to the transaction; at this time, the management platform may return a prompt that the execution of the intelligent contract creation transaction fails to the blockchain client.

Or, when the amount of the virtual resources held by the virtual resource account is less than the second amount and the second amount of the virtual resources cannot be deducted in a sufficient amount, the management platform may instruct the node device to temporarily store the transaction receipt and the account status, send a balance supplement reminder to the blockchain client, after the blockchain client completes balance supplement on the user account, perform deduction of the second amount of the virtual resources, update the account status of the intelligent contract in the blockchain after successful deduction, and store the transaction receipt (receipt) in an MPT receipt tree of the blockchain, so that the management platform returns a prompt that the intelligent contract calls transaction execution completion to the blockchain client.

In another embodiment, when the virtual resource is a virtual resource issued on a blockchain, and after the call transaction of the intelligent contract is sent to the blockchain by the management platform, the broadcasting, consensus verification, and execution processes in the blockchain may specifically include:

after receiving the intelligent contract invoking transaction, the node equipment can broadcast and transmit the intelligent contract invoking transaction in a blockchain network;

after receiving the intelligent contract calling transaction, the consensus node in the block chain can carry out consensus verification on the intelligent contract calling transaction;

if the consensus verification for the smart contract invocation transaction passes, deducting, by a node device of a blockchain, the second amount of virtual resources from a user account corresponding to a user identification based on a second amount of the virtual resources anchored to a value of system resources of the node device of the blockchain consumed to process the smart contract invocation transaction; and executing calling logic of the intelligent contract based on the calling parameter, and storing the execution result of the intelligent contract calling transaction in the block chain.

In this embodiment, in order to reduce the waste of system resources of a node device due to a failure of invoking the intelligent contract and a failure of invoking the intelligent contract due to insufficient balance of virtual resources in the blockchain account corresponding to the user identifier to pay for the second amount of virtual resources required to be transferred to process the intelligent contract invocation transaction, the consensus verification process performed by the consensus node of the blockchain may include: verifying whether the quantity of virtual resources held by a blockchain user account corresponding to the identification included in the intelligent contract invoking transaction is not less than a preset threshold value.

The preset threshold may be a fixed virtual resource threshold set by the blockchain developer for the transaction of the intelligent contract invocation type, for example, the preset threshold may be set based on the minimum system resource consumption for executing the transaction of the intelligent contract invocation type or the number of virtual resources anchored by the average system resource consumption; under the condition, in order to enable the intelligent contract to be successfully called and executed, the virtual resource quantity meeting the preset threshold value needs to be held in the block chain account corresponding to the user identifier, so that when the virtual resource quantity in the user account is less than the preset threshold value, a prompt that the consensus verification fails is directly returned, and further consumption of system resources due to processing of the intelligent contract calling transaction after the node equipment is in the consensus verification stage is avoided.

In some embodiments, the intelligent contract invoking transaction passes the consensus verification that the balance of the user account is not less than the preset threshold, but the transaction execution may fail because the newly added storage resource required for the intelligent contract invoking transaction is too large or the logic for invoking the intelligent contract execution is too complex, so that the second amount of the virtual resource determined by the calculation is larger than the balance of the user account.

Optionally, the consensus verification may further include the process of calculating a first amount of system resources of the node device consumed for processing the intelligent contract invocation transaction and determining a second amount of the virtual resources anchored to the first amount of system resource value, as described in step 404, for example, when the underlying protocol of the blockchain deploys a calculation model for calculating the amount of the virtual resources anchored to the system resource value of the node device consumed for processing the intelligent contract invocation transaction, and when the consensus node acquires the intelligent contract invocation transaction, the second amount of the virtual resources anchored to the system resources consumed for processing the intelligent contract by the node device, which is calculated and determined by the underlying protocol of the blockchain, may be acquired, and in this case, the preset threshold may be the second amount of the virtual resources determined by the calculation process, so that the consensus node of the blockchain is in the consensus verification, and executing consensus verification whether the payment is enough or not directly based on the second amount of the virtual resources deducted for processing the intelligent contract calling transaction, thereby providing more accurate consensus verification and improving the execution success rate of the intelligent contract calling transaction passing the consensus verification.

In one or more embodiments, after the virtual resource account of the user is successfully deducted from the second amount of virtual resources, the management platform may hold the second amount of virtual resources received from the virtual resource account of the user, and allocate the second amount of virtual resources to the virtual resource account of the user or the mechanism entity corresponding to the node device of the blockchain based on a preset period (including real-time or periodically), so as to complete allocation of the virtual resources to the user or the mechanism entity providing the system resources in the blockchain system.

The present embodiment does not limit the specific manner in which the virtual resources are allocated. For example, the management platform may allocate the received currency cash or the currency cash corresponding to the deducted virtual credits to a currency cash account of a user or institution entity corresponding to the node device of the blockchain, or the management platform may allocate virtual resources issued on the chain received in the blockchain account to a blockchain account of a user or institution entity corresponding to the node device of the blockchain, and then, in response to a redemption request of the user or institution, redeem the virtual resources allocated in the blockchain account thereof to entity assets outside the chain, and perform logout processing on the redeemed virtual resources on the chain.

The specification does not specifically limit the rule that the management platform allocates the second amount of virtual resources to the blockchain account corresponding to each node device in the blockchain. For example, the management platform may equally allocate the deducted second amount of virtual resources to virtual resource accounts of users or organization entities corresponding to each node device of the block chain to hold the virtual resource accounts respectively.

Or, based on the storage medium performance attribute of the account storage resource allocated to the intelligent contract by each node device of the block chain, the management platform allocates the second number of virtual resources to the virtual resource accounts of the user or the organization entity corresponding to each node device of the block chain to hold the virtual resource accounts respectively. For example, because the storage medium configurations of the node devices are different, the management platform may rank the storage medium of each node device based on the storage medium performance attribute (e.g., hard disk performance attribute such as hdd, ssd, or nvm) of each node device obtained by monitoring each node device, so as to allocate a higher proportion of virtual resources to the node device providing the high-level storage medium and allocate a lower proportion of virtual resources to the node device providing the low-level storage medium.

In a further illustrated embodiment, the intelligent contract creator is invoked by the intelligent contract caller based on the created intelligent contract, and provides the intelligent contract caller with blockchain services, so that the creator of the intelligent contract or the intelligent contract itself can also obtain virtual resources based on the system resources provided by the creator or the intelligent contract itself, and the corresponding logical computing services for executing the intelligent contract are invoked based on the invocation parameters. Specifically, the execution logic corresponding to the contract code of the intelligent contract may include virtual resource transfer logic; the virtual machine of each node device executes the intelligent contract invoking transaction, and the method further comprises the following steps: executing the virtual resource transfer logic, determining a ninth amount of virtual resources corresponding to the calling parameter, and transferring the ninth amount of virtual resources from the virtual resources held by the user account to the intelligent contract account or other user accounts (such as a developer account of the intelligent contract) designated by the intelligent contract.

In this embodiment, the method for determining the ninth amount of virtual resources is not limited, and the ninth amount of virtual resources may be a fixed value of the amount of virtual resources corresponding to the interface function type included in the call parameter; or the ninth quantity of the virtual resources may be calculated by the intelligent contract based on the interface function type and the input parameter value included in the calling parameter when executing the intelligent contract calling transaction. The intelligent contract developer can develop various calculation obtaining methods of virtual resources corresponding to the calling parameters from specific business services provided by the intelligent contract, and all the methods are within the scope included in the embodiment.

Based on the method for invoking an intelligent contract according to one or more embodiments, the system resources hosted by the node devices of the block chain may be value-anchored with the virtual resources, so that a first amount of system resources of the node devices of the block chain consumed by the transaction may be invoked based on the node devices processing the intelligent contract, a second amount of virtual resources may be anchored, and the management platform performing management on the node devices of the block chain charges the second amount of virtual resources, so as to optimize utilization of the block chain resources, thereby effectively preventing waste of the system resources on the block chain.

The management platform can allocate the virtual resources received by the management platform to the node users of the blockchain in real time or regularly based on preset allocation rules, so that each node user providing system resources for the blockchain can obtain corresponding benefits. Therefore, compared with the existing mode that the miner node only charges the transaction commission fee, each node device in the block chain is encouraged to contribute corresponding system resources in a more fair virtual resource allocation mode.

Corresponding to the above flow implementation, the embodiments of the present specification further provide invoking devices 50, 60 of the intelligent contract. The means 50, 60 may be implemented by software, by hardware or by a combination of both. Taking a software implementation as an example, the logical device is formed by reading a corresponding computer program instruction into a memory for running through a Central Processing Unit (CPU) of the device. In terms of hardware, the device in which the apparatus is located generally includes other hardware such as a chip for transmitting and receiving wireless signals and/or other hardware such as a board for implementing a network communication function, in addition to the CPU, the memory, and the storage shown in fig. 7.

As shown in fig. 5, the present specification further provides an intelligent contract invoking apparatus 50, which is applied to a management platform for managing node devices of a block chain, where a system resource and a virtual resource carried by the node devices of the block chain are value-anchored; the apparatus 50 comprises:

the acquiring unit 502 acquires an intelligent contract invoking transaction triggered by a blockchain client, where the intelligent contract invoking transaction includes invoking parameters of an intelligent contract;

a calculating unit 504, configured to calculate a first amount of system resources of a node device of the blockchain consumed for processing the smart contract invocation transaction, and determine a second amount of the virtual resources anchored with the first amount of system resource value;

a sending unit 506, configured to send the smart contract invocation transaction to the blockchain after the virtual resource account of the user is deducted by the second amount of virtual resources, so that a node device of the blockchain executes the smart contract invocation transaction based on the invocation parameter, and store an execution result of the smart contract invocation transaction in the blockchain.

In yet another illustrated embodiment, the apparatus 50 further comprises:

an allocating unit 508, configured to allocate the second amount of virtual resources to a user account corresponding to the node device of the block chain for holding.

In yet another illustrated embodiment, the allocating unit 508 is further configured to:

averagely distributing the second quantity of virtual resources to user accounts corresponding to the node devices of the block chain for holding;

or, based on the storage medium attribute of the account storage resource allocated to the intelligent contract by each node device of the block chain, allocating the second number of virtual resources to the user account corresponding to the node device of the block chain for holding.

In yet another illustrated embodiment, processing system resources of node devices of the blockchain consumed by the intelligent contract invocation transaction includes one or more of the following in combination:

processing the intelligent contract to invoke the computing resources of the node devices of the blockchain actually consumed by the exchange;

processing the intelligent contract to call network resources of the node equipment of the block chain actually consumed by the exchange;

processing the smart contract calls storage resources of node devices of the blockchain actually consumed by the exchange.

In yet another illustrated embodiment, the blockchain deploys a resource computation contract, and execution logic corresponding to contract code of the resource computation contract includes resource computation logic;

the calculating unit 504 is further configured to:

invoking the resource computation contract, executing the resource computation logic, computing a first amount of system resources of a node device of the blockchain consumed to process the smart contract invocation transaction, and determining a second amount of the virtual resources anchored with the second amount of system resource value.

In yet another illustrated embodiment, the apparatus 50 further comprises a return unit 510:

before sending the intelligent contract invocation transaction to the blockchain, if the virtual resource account of the user is not successfully deducted the second amount of virtual resources within a preset time limit, returning a prompt of failure in execution of the intelligent contract invocation transaction to the blockchain client.

In yet another illustrated embodiment, the management platform comprises a cloud computing management platform; the node devices of the blockchain include virtual machines created on physical hosts managed by a cloud computing management platform.

The specific details of the implementation process of the function and the action of each unit in the device 50 are described in the implementation process of the corresponding step in the method for invoking an intelligent contract executed by the management platform, and the relevant points may be referred to the partial description of the method embodiment, which is not described herein again.

As shown in fig. 6, the present specification further provides an intelligent contract invoking apparatus 60, which is applied to a management platform for managing node devices of a block chain, where a system resource and a virtual resource carried by the node devices of the block chain are value-anchored; the apparatus 60 comprises:

the acquiring unit 602 acquires an intelligent contract invoking transaction triggered by a blockchain client, where the intelligent contract invoking transaction includes invoking parameters of an intelligent contract;

a sending unit 604, configured to send the intelligent contract invocation transaction to the blockchain, so that a node device of the blockchain executes the intelligent contract invocation transaction based on the invocation parameter, and store an execution result of the intelligent contract invocation transaction in the blockchain;

a calculating unit 606, configured to calculate a first amount of system resources of the node device of the blockchain consumed for processing the intelligent contract invocation transaction, and determine a second amount of the virtual resources anchored to the first amount of system resource value, so that the virtual resource account of the user is deducted by the second amount of the virtual resources.

In yet another illustrated embodiment, the apparatus 60 further comprises:

an allocating unit 608, configured to allocate the second amount of virtual resources to a user account corresponding to the node device of the block chain for holding.

In yet another illustrated embodiment, the allocating unit 608 is further configured to:

the calculating unit 606 is further configured to:

In yet another illustrated embodiment, the virtual resource is a blockchain asset published on a blockchain anchored as value to an off-chain asset held by a user;

the intelligent contract invocation transaction also comprises an account identification of the user account;

the virtual resource account of the user comprises a blockchain user account corresponding to the account identification.

In yet another illustrated embodiment, the apparatus 60 further comprises a return unit 610,

if the virtual resource account of the user is successfully deducted by the second amount of virtual resources, saving a transaction receipt of the generated intelligent contract calling transaction to a blockchain, and returning an execution result of the intelligent contract calling transaction to the blockchain client based on the transaction receipt;

and if the quantity of the virtual resources held by the virtual resource account of the user is less than the second quantity, deleting the generated transaction receipt of the intelligent contract calling transaction, and returning a prompt of failure of intelligent contract calling to the blockchain client.

The specific details of the implementation process of the function and the action of each unit in the device 60 are described in the implementation process of the corresponding step in the method for invoking an intelligent contract executed by the management platform, and the relevant points may be referred to the partial description of the method embodiment, which is not described herein again.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the units or modules can be selected according to actual needs to achieve the purpose of the solution in the specification. One of ordinary skill in the art can understand and implement it without inventive effort.

The apparatuses, units and modules illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

Corresponding to the above method embodiment, the embodiment of the present specification further provides a computer device, as shown in fig. 7, including a memory and a processor. Wherein the memory has stored thereon a computer program executable by the processor; the processor, when executing the stored computer program, performs the steps of sending a call method of a smart contract executed by the management platform in an embodiment of the smart contract call transaction to the blockchain after the second amount of virtual resources is deducted from the user's virtual resource account. For a detailed description of the steps of the intelligent contract calling method executed by the node device, please refer to the previous contents, which is not repeated.

Corresponding to the above method embodiment, the embodiment of the present specification further provides a computer device, as shown in fig. 7, including a memory and a processor. Wherein the memory has stored thereon a computer program executable by the processor; the processor, when executing the stored computer program, performs the steps of calculating a second amount of virtual resources after sending the smart contract invocation transaction to the blockchain such that the second amount of virtual resources is deducted from the method of invoking the smart contract performed by the management platform of the embodiment. For a detailed description of the steps of the intelligent contract calling method executed by the node device, please refer to the previous contents, which is not repeated.

The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data.

Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

Claims

1. A calling method of an intelligent contract is applied to a management platform for managing node equipment of a block chain, wherein value anchoring is carried out on system resources and virtual resources carried by the node equipment of the block chain; the method comprises the following steps:

after the virtual resource account of the user is deducted by the second amount of virtual resources, sending the intelligent contract invocation transaction to the blockchain, so that the node equipment of the blockchain executes the intelligent contract invocation transaction based on the invocation parameter, and storing the execution result of the intelligent contract invocation transaction in the blockchain.

2. The method of claim 1, further comprising:

and allocating the second amount of virtual resources to a virtual resource account corresponding to the node equipment of the block chain for holding.

3. The method of claim 2, wherein the allocating the second amount of virtual resources to the user account corresponding to the node device of the blockchain for holding comprises:

averagely distributing the second quantity of virtual resources to virtual resource accounts corresponding to the node devices of the block chain for holding;

or, based on the storage medium performance attribute of the account storage resource allocated to the intelligent contract by each node device of the block chain, allocating the second number of virtual resources to the virtual resource account corresponding to the node device of the block chain for holding.

4. The method of claim 1, processing system resources of node devices of the blockchain consumed by the intelligent contract invocation transaction, comprising a combination of one or more of:

processing the computing resources of the node devices of the blockchain consumed by the intelligent contract invocation transaction;

processing network resources of node devices of the blockchain consumed by the intelligent contract invocation transaction;

processing the smart contract calls storage resources of node devices of the blockchain consumed by the transaction.

5. The method of claim 1 or 4, the blockchain deploying a resource computation contract, execution logic corresponding to contract code of the resource computation contract comprising resource computation logic;

the computing processing a first amount of system resources of a node device of the blockchain consumed by the smart contract invocation transaction and determining a second amount of the virtual resources anchored to the first amount of system resource value includes:

6. The method of claim 1, the virtual resource is a blockchain asset published on a blockchain anchored as value to an off-chain asset held by a user.

7. The method of claim 1 or 6, further comprising:

8. The method of claim 1, the management platform comprising a cloud computing management platform; the node devices of the blockchain include virtual machines created on physical hosts managed by a cloud computing management platform.

9. A calling method of an intelligent contract is applied to a management platform for managing node equipment of a block chain, wherein value anchoring is carried out on system resources and virtual resources carried by the node equipment of the block chain; the method comprises the following steps:

calculating a first amount of system resources of a node device of the blockchain consumed for processing the smart contract invocation transaction, and determining a second amount of the virtual resources anchored with the first amount of system resource value, so that the second amount of virtual resources are deducted from a virtual resource account of a user.

10. The method of claim 9, further comprising:

11. The method of claim 10, wherein the allocating the second amount of virtual resources to the user account corresponding to the node device of the blockchain for holding comprises:

or, based on the storage medium attribute of the account storage resource allocated to the intelligent contract by each node device of the block chain, allocating the second number of virtual resources to the virtual resource account corresponding to the node device of the block chain for holding.

12. The method of claim 9, processing system resources of node devices of the blockchain consumed by the intelligent contract invocation transaction, comprising a combination of one or more of:

13. The method of claim 9 or 12, the blockchain deploying a resource computation contract, execution logic corresponding to contract code of the resource computation contract comprising resource computation logic;

14. The method of claim 9, the virtual resource is a blockchain asset published on a blockchain anchored as value to an off-chain asset held by a user;

15. The method of claim 9 or 14, instructing a node device to save a generated transaction receipt for the smart contract invocation transaction to a blockchain and return an execution result of the smart contract invocation transaction to the blockchain client based on the transaction receipt if the virtual resource account of the user is successfully deducted by the second amount of virtual resources;

and if the quantity of the virtual resources held by the virtual resource account of the user is less than the second quantity, indicating the node equipment to delete the generated transaction receipt of the intelligent contract calling transaction, and returning a prompt of failure of intelligent contract calling to the blockchain client.

16. The method of claim 14, prior to a node device executing the smart contract creation transaction, the method further comprising:

the node equipment broadcasts the intelligent contract creation transaction to a blockchain network to carry out consensus verification on the intelligent contract creation transaction; wherein the consensus verification comprises: verifying whether the number of virtual resources held by the user account is not less than a preset threshold value;

if the consensus verification for the intelligent contract creation transaction passes, the node device executes the intelligent contract creation transaction.

17. The method of claim 9, the management platform comprising a cloud computing management platform; the node devices of the blockchain include virtual machines created on physical hosts managed by a cloud computing management platform.

18. A calling device of an intelligent contract is applied to a management platform for managing node equipment of a block chain, wherein system resources and virtual resources carried by the node equipment of the block chain are subjected to value anchoring; the device comprises:

19. The apparatus of claim 18, further comprising:

and the allocation unit allocates the second amount of virtual resources to the virtual resource account corresponding to the node equipment of the block chain for holding.

20. The apparatus of claim 19, the allocation unit, further to:

21. The apparatus of claim 18, the system resources of the node devices of the blockchain consumed to process the smart contract invocation transaction comprising a combination of one or more of:

22. The apparatus of claim 18 or 21, the blockchain deploying a resource computation contract, execution logic corresponding to contract code of the resource computation contract comprising resource computation logic;

the computing unit is further configured to:

23. The apparatus of claim 18, further comprising a return unit:

24. The apparatus of claim 18, the management platform comprising a cloud computing management platform; the node devices of the blockchain include virtual machines created on physical hosts managed by a cloud computing management platform.

25. A calling device of an intelligent contract is applied to a management platform for managing node equipment of a block chain, wherein system resources and virtual resources carried by the node equipment of the block chain are subjected to value anchoring; the device comprises:

26. The apparatus of claim 25, further comprising:

27. The apparatus of claim 26, the allocation unit, further to:

28. The apparatus of claim 25, the system resources of the node devices of the blockchain consumed to process the smart contract invocation transaction comprising a combination of one or more of:

29. The apparatus of claim 25 or 28, the blockchain deploying a resource computation contract, execution logic corresponding to contract code of the resource computation contract comprising resource computation logic;

the computing unit is further configured to:

30. The apparatus of claim 25, the virtual resource is a blockchain asset published on a blockchain anchored as value to an off-chain asset held by a user;

31. The apparatus of claim 25 or 30, further comprising a return unit,

if the virtual resource account of the user is successfully deducted by the second amount of virtual resources, instructing a node device to save a generated transaction receipt of the intelligent contract invocation transaction to a blockchain, and returning an execution result of the intelligent contract invocation transaction to the blockchain client based on the transaction receipt;

32. The apparatus of claim 25, the management platform comprising a cloud computing management platform; the node devices of the blockchain include virtual machines created on physical hosts managed by a cloud computing management platform.

33. A computer device, comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; the processor, when executing the computer program, performs the method of any of claims 1 to 8.

34. A computer device, comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; the processor, when executing the computer program, performs the method of any of claims 9 to 17.