CN111027936B - Workflow realization method, device and medium based on intelligent contract in alliance network - Google Patents
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- 230000000977 initiatory effect Effects 0.000 claims description 14
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The application discloses a workflow realization method, equipment and medium based on intelligent contracts in a alliance network, wherein the method is based on an alliance chain scene, a plurality of related parties jointly develop business based on block chains, and the business is organized into a flow form through the intelligent contracts of the block chains; through a distributed network of the block chain, the process flows among all institutions, and related operators check tasks to be handled through the block chain SDK to process the process. The application solves the problem of high cooperation cost of all the parties.
Description
Technical Field
The embodiment of the application relates to the technical field of blockchains, in particular to a workflow realization method, equipment and medium based on intelligent contracts in a alliance network.
Background
The blockchain is used as an emerging application mode, has wide application value in the fields of financial services, supply chain management and the like, and the large-scale application of the blockchain enables distributed application (DApp) to be largely developed, and the distributed application enables two or more application entities in an open interconnection environment to mutually call and complete information processing. In a blockchain network, individual participants build an application chain (Application Chain) for some common business objective and deploy business intelligence contracts on the chain. In such a blockchain-based, distributed application implemented by smart contracts, collaboration of the participants is a challenge. For example, an operator of an application needs to upgrade an intelligent contract, and then needs to cooperate with each party to complete multiple steps of review, deployment, start and the like of the intelligent contract. These steps tend to be interdependent. It is costly to coordinate the steps to be done in a geographically separated, distributed network.
Disclosure of Invention
In view of this, the embodiment of the application provides a workflow realization method, device and medium based on intelligent contracts in a alliance network, which solves the problem of high cooperation cost of all parties.
The technical scheme adopted by the embodiment of the application is as follows:
in a first aspect, an embodiment of the present application provides a workflow implementation method based on intelligent contracts in a federated network, where the method is based on a federated chain scenario, and a plurality of related parties jointly develop services based on blockchains, and the services are organized into a flow form through the intelligent contracts of the blockchains; through a distributed network of the block chain, the process flows among all institutions, and related operators check tasks to be handled through the block chain SDK to process the process. The method comprises the following steps:
constructing a business alliance participation organization, an intra-organization user and a node identity system in an application chain foundation contract (Bootstrap Contract) mode;
the initiating mechanism performs flow design and corresponding flow configuration through the under-chain system, and deploys a flow engine intelligent contract on the application chain;
the initiating mechanism sends an initiating business process through the client SDK, and is connected to a designated mechanism node according to the configuration of the process to-do task of the process for a related process processor in the mechanism;
inquiring and acquiring a flow task to be handled through a client SDK, processing the task to be handled after inquiring the task by a flow processor in an organization, submitting corresponding approval comments, and requiring a signature of a current processor for approval operation; after the task is processed, other nodes in the alliance can receive approval operation information in an event throwing mode by the intelligent contract of the flow engine;
after the current approver processes, when the condition configured by the flow node is met, the flow is transferred to the next node, and correspondingly, a task to be handled is created for the processor of the next flow node; after the node processor executes the approval action, the process engine intelligently closes the appointment and throws out the corresponding event, and each mechanism node can acquire the event and analyze and acquire the processing condition of the current process;
when the processing of the last node of the flow is completed, the flow is terminated.
Furthermore, each party of the alliance builds an application chain based on the developed business, the basic information of the alliance is registered and maintained and is deployed on the application chain in a mode of an application chain basic contract (Bootstrap Contract), the basic contract data can be read by only participating institutions authenticated in the alliance network and users in institutions, and only the appointed alliance business initiator can write in.
Further, the information maintained by the application chain foundation contract comprises intra-federation organization information and certificate information, wherein the intra-federation organization information comprises certificates issued by CA organizations authenticated by the federation, organization-certificate association information, nodes and node certificate information.
Furthermore, the design of the business process is performed through an under-chain system, the system integrates a client SDK, the process data and the business data are distinguished and packaged in the process of process design, the process data are stored in an intelligent contract of an on-chain process engine, and the business data are stored in a business data storage mechanism and indexed in a node identity and data hash mode.
Further, the business process includes determining node design of the process, designating corresponding process node processor and business information.
Furthermore, on-chain/off-chain coordination is required for the design of the business process, the process information is on-chain, business data stored on the intelligent contract of the process engine and carried by the process are stored in a self-organization and indexed in a node identity data hash mode; when the whole process design is completed, the process information is linked.
Further, the process flow transfer relies on information on the application link base contract, certificates of the institutions are issued through PKI, signatures in event messages can be verified, and event messages belonging to the institutions are filtered.
Further, the approver acquires the current flow information, can perform the operation of rejecting, and is refuted to the last flow node, and the last flow node submits the flow after modifying the flow information or the business information.
Further, according to the configuration of the flow, when each node cannot meet the configuration condition, the flow is triggered to terminate.
In a second aspect, an embodiment of the present application provides an apparatus, including:
one or more processors.
And a memory for storing one or more programs.
The one or more programs, when executed by the one or more processors, cause the one or more processors to implement a method of intelligent contract-based workflow implementation in a federated network as described in the first aspect.
In a second aspect, an embodiment of the present application provides a computer readable storage medium having a computer program stored thereon, where the program when executed by a processor implements a workflow implementation method based on intelligent contracts in a federated network as described in the first aspect.
The embodiment of the application can achieve the following beneficial effects by adopting the technical scheme:
by utilizing the distributed and contract whole network execution characteristic of the block chain, the multi-mechanism cooperation network is established by combining the multi-mechanism, the multi-mechanism cooperation network is established, the service cooperation is developed on the network to cope with the growing multi-mechanism cooperation service scene, the geographic position limitation is broken, and the multi-party cooperation service innovation is supported. The developed business is organized into a workflow, a workflow engine based on intelligent contracts is introduced on the constructed collaboration network, the flow flows on a chain, the whole network is operated to execute, and timeliness of flow operation and business propulsion of all parties is ensured. Meanwhile, the process engine operates on a contract chain, so that the problem that one party is interrupted in service and the process cannot be performed is avoided, and the high availability and high reliability of the service are achieved. The traditional process often ignores the security problem of business operation, has the operation that the process operation is tampered and the operation is repudiated, and by introducing a basic link contract, the identity information of each mechanism related to each application chain is registered and uplink the user information in the mechanism, and the operation which is carried out by the related person signature of the subsequent process is carried out, so that the non-repudiation and the non-tampering of operation records are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a diagram showing the overall structure of the method according to embodiment 1 of the present application.
Fig. 2 is a schematic structural diagram of an apparatus according to embodiment 2 of the present application.
Detailed Description
The objects and effects of the present application will become more apparent from the following detailed description of the preferred embodiments and the accompanying drawings, in which the present application is further described in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Example 1:
fig. 1 is an overall architecture diagram of a method provided by an embodiment of the present application, in fig. 1, each participant performs collaborative development of a service based on a blockchain, each participant jointly constructs a service chain, deploys a base contract and a flow engine contract, and the scheme is based on distributed, multiparty consensus, and contract whole-network execution characteristics of the blockchain. The process is designed and initiated according to the business, the transaction is initiated to be executed and agreed on the business chain and the contract event mechanism is adopted, and each mechanism can instantly know the flow and processing conditions of the process. And the on-link/off-link cooperative processing ensures the privacy of the flow service data.
The embodiment of the application provides a workflow realization method based on intelligent contracts in a alliance network, which is based on an alliance chain scene, a plurality of participants jointly develop business based on block chains, and the business is organized into a flow form through the intelligent contracts of the block chains. By using the distributed network of the blockchain, contract whole network execution, consensus and auditable property, deploying a process engine contract on the constructed application chain, enabling business processes to circulate among various institutions, and enabling related operators to inquire tasks to be handled through the blockchain SDK and process the processes. The method will be described in detail below.
S100, constructing a business alliance participation mechanism, users in the mechanism and a node identity system in an application chain foundation contract (Bootstrap Contract) mode;
each party of the alliance builds an application chain (Application Chain) based on the developed business, alliance basic information is deployed on the application chain in a mode of an application chain basic contract (Bootstrap Contract), the initiator registers each party information, users in the institution and node identities on the basic contract, the basic contract data can be read only by authenticated users in the alliance network, and only the appointed initiator can write. The base contract provides the necessary base data for continued operation and flow through a federated network.
The information maintained by the underlying contract includes intra-federation organizations, intra-organization user certificate information, organization-certificate association information, nodes, node certificate information. The workflow engine intelligent contract needs to interact with the base contract to obtain the base information in the federation, such as obtaining the CA root certificate, user certificate, node certificate, etc. of the organization.
After each party builds the business alliance, a base contract (Bootstrap Contract) is deployed, and each party information is registered on the base contract through the blockchain SDK. Subsequent parties and workflow engine intelligence contracts can access the information registered on the underlying chain. The base contract provides the necessary base data for continued operation and flow through a federated network.
With the basic information of each participant, a workflow engine based on intelligent contracts is created, and the workflow engine comprises flow initiation, flow information modification, flow circulation, flow to-do task creation and flow approval.
S200, the initiating mechanism performs flow design and corresponding flow configuration through the under-chain system, and deploys flow engine intelligent contracts on an application chain;
each party confirms that a certain business needs to be carried out cooperatively, firstly, each party determines that the business flow comprises flow nodes, the nodes process people and business information, business data are different according to different business flow requirements, and corresponding flow configuration is also different. This step is determined by the federated service initiator, including determining flow basic information, service information, node information (action buttons, node attributes).
The design of the business process is carried out through an under-chain system, the system integrates a client SDK, the process data and the business data are packaged in the process of process design, the process data can be shared in each way along with the flow of the process, and the business data are stored on own nodes and indexed through Hash. The design of the process requires under-link/under-link coordination, the process information can be shared on the link, and the business data carried by the process can be changed along with the circulation of the process. When the whole process design is completed, the process information is on the chain, and the initiator can inquire the process information from the workflow engine contract through the SDK so as to prepare for the subsequent initiation process.
S300, an initiating mechanism sends an initiating business process through a client SDK, and is connected to a designated mechanism node according to the configuration of the process, and a process task to be handled is created for a related process processor in the mechanism;
in the alliance network, when a participant designs a flow for a certain service, a initiator can initiate a workflow, the flow is generally initiated through the initiator of the service alliance, the initiator sends and initiates a workflow blockchain transaction through a Client SDK at the node, the transaction is sent to a flow engine intelligent contract on an application chain, the initiation action is triggered, the workflow engine contract is connected to a designated node according to the configuration of the flow to generate a to-be-handled task of the flow for the node, and the corresponding node can generate a processing task of a related processor at the same time.
S400, the initiating mechanism sends an initiating business process through the client SDK, and is connected to a designated mechanism node according to the configuration of the process, and a process task to be handled is created for a related process processor in the mechanism;
after the process is initiated, the process starts to circulate, and when the mechanism is positioned at the next process node, a process task to be handled is created for a processor configured by the node. The process engine contract throws out an event to be handled, each node analyzes the received event data, if the current node has a task to be handled, the task data to be handled can be queried through the Client SDK, and at the moment, the nodes of the organization assign the task to related personnel inside.
S500, after the current approver processes, when the condition configured by the flow node is met, the flow is transferred to the next node, and correspondingly, a task to be handled is created for the processor of the next flow node; after the node processor executes the approval action, the process engine intelligently closes the appointment and throws out the corresponding event, and each mechanism node can acquire the event and analyze and acquire the processing condition of the current process;
the flow stream can rely on the information on the basic contract, the certificate of the organization is issued through PKI, the signature in the event message can be verified, and the event message belonging to the organization is filtered.
The flow task to be handled can be inquired and acquired through the SDK. After inquiring the task, the business related personnel can approve the task to be done, submit corresponding approval comments, and the approval operation needs the signature of the current approver. After the task of the corresponding approver is processed, the approval comments are submitted, and other nodes in the alliance can receive approval operation information in a mode of throwing events.
The approver acquires the current flow information, can perform the operation of rejecting, and is connected back to the last flow node, and the last flow node submits the flow after modifying the flow information or the business information.
When the flow is approved, the signature of the operator is needed, and the current operator can be traced later and cannot be repudiated. Other approvers in the flow can sense after the current approval operation, because the flow engine contract can run out of the event after the current processor submits the operation, and the node can know the current flow and the condition of the current operator after acquiring the event, so that the subsequent node processors can conveniently prepare to start to process own tasks.
S600, when the processing of the last node of the flow is completed, the flow is terminated.
When the processing of the last node of the flow is completed, the flow is terminated. Of course, other business rules trigger the flow to terminate, and the termination of the flow is an appointed event, after the flow is terminated, the ending of the flow means that the contract can perform subsequent processing according to different states.
After the process is terminated, the process engine contract throws out a termination event, and all nodes in the current process receive the termination event to prepare for subsequent processing.
May further comprise:
after the flow is finished, S700 means that the related approval is finished, and the predetermined operation can be performed subsequently. For example, the federation network needs to deploy a service contract, and after the operation of approval personnel of all organizations is finished, the contract can be deployed.
Example 2:
fig. 2 is a schematic structural diagram of an apparatus according to embodiment 2 of the present application. Fig. 2 shows a block diagram of an exemplary device 1 suitable for use in implementing embodiments of the present application. The device shown in fig. 2 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the application. Device 1 may typically be a device implementing a workflow implementation method based on smart contracts in a federated network.
As shown in fig. 2, device 1 is in the form of a general purpose computing device. The components of the device 1 may include, but are not limited to: one or more processors or processing units 2, a memory 3, a bus 4 connecting the various system components, including the memory 3 and the processing unit 2.
Bus 4 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
The device 1 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by device 1 and includes both volatile and nonvolatile media, removable and non-removable media.
The memory 3 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 5 and/or cache memory 6. The device 1 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, the storage system 8 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 2, commonly referred to as a "hard disk drive"). Although not shown in fig. 2, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CDROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be coupled to bus 4 via one or more data medium interfaces. The memory 3 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the application.
Having a set (at least one) of program modules 8 may be stored in, for example, memory 3, such program modules 8 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 8 typically carry out the functions and/or methods of the embodiments described herein.
The device 1 may also communicate with one or more external devices 10 (e.g., keyboard, pointing device, display device 9, etc.), one or more devices that enable a user to interact with the device 1, and/or any devices (e.g., network card, modem, etc.) that enable the device 1 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 11. Also, the device 1 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through a network adapter 12. As shown in fig. 2, the network adapter 12 communicates with other modules of the device 1 via the bus 4. It should be appreciated that although not shown in fig. 2, other hardware and/or software modules may be used in connection with the device 1, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit 2 executes various functional applications and data processing by running a program stored in the memory 3, for example, implementing a blockchain-based data blocking acknowledgement method provided by an embodiment of the present application.
Example 3:
embodiment 3 of the present application further provides a computer readable storage medium having stored thereon a computer program (or referred to as computer executable instructions) which, when executed by a processor, is configured to perform a method for implementing a workflow based on smart contracts in a federated network, the method being the solution described in embodiment 1.
The computer storage media of embodiments of the application may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CDROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It will be appreciated by persons skilled in the art that the foregoing description is a preferred embodiment of the application, and is not intended to limit the application, but rather to limit the application to the specific embodiments described, and that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for elements thereof, for the purposes of those skilled in the art. Modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. A workflow implementation method based on intelligent contracts in a federated network, the method comprising:
constructing a business alliance participation organization, an intra-organization user and a node identity system in an application chain foundation contract (Bootstrap Contract) mode;
the initiating mechanism performs flow design and corresponding flow configuration through the under-chain system, and deploys a flow engine intelligent contract on the application chain;
the initiating mechanism sends an initiating business process through the client SDK, and is connected to a designated mechanism node according to the configuration of the process to-do task of the process for a related process processor in the mechanism;
inquiring and acquiring a flow task to be handled through a client SDK, processing the task to be handled after inquiring the task by a flow processor in an organization, submitting corresponding approval comments, and requiring a signature of a current processor for approval operation; after the task is processed, other nodes in the alliance can receive approval operation information in an event throwing mode by the intelligent contract of the flow engine;
after the current approver processes, when the condition configured by the flow node is met, the flow is transferred to the next node, and correspondingly, a task to be handled is created for the processor of the next flow node; after the node processor executes the approval action, the process engine intelligently closes the appointment and throws out the corresponding event, and each mechanism node can acquire the event and analyze and acquire the processing condition of the current process;
when the processing of the last node of the flow is completed, the flow is terminated.
2. The workflow implementing method based on intelligent contract in the alliance network according to claim 1, wherein each party of the alliance builds an application chain based on the developed business, the alliance basic information registration and maintenance are deployed on the application chain by means of an application chain basic contract (Bootstrap Contract), the basic contract data can be read by only the participating institutions authenticated in the alliance network, and only the appointed alliance business initiator can write.
3. The method of claim 1, wherein the information maintained by the application chain base contract includes intra-federation authority information, certificate information, including certificates issued by CA authorities authenticated by the federation, authority-certificate association information, nodes, node certificate information.
4. The workflow implementation method based on intelligent contracts in a federated network of claim 1, wherein the design of the business process is performed by an under-chain system that integrates a client SDK, and during the process design, the process data, the business data, are differentiated and encapsulated, and the process data is stored in an on-chain process engine intelligent contract, and in a business data storage mechanism, indexed by node identity with data hash.
5. The method of claim 1, wherein the business process includes determining node designs of the process, designating corresponding process node handlers, and business information.
6. The workflow implementing method based on intelligent contract in the alliance network according to claim 1, wherein the design of the business process requires the on-chain/off-chain collaboration, the process information is on-chain, the business data stored on the intelligent contract of the process engine and carried by the process are stored in the self-organization and indexed by node identity with data hash mode; when the whole process design is completed, the process information is linked.
7. The workflow implementation method based on intelligent contracts in a federated network of claim 1, wherein the flow transfer relies on information on the application chain base contracts, and the certificates of the institutions are issued by PKI, which can verify the signature in the event message, and filter the event message belonging to the institutions themselves.
8. The workflow implementation method based on intelligent contracts in a federated network of claim 1, wherein an approver obtains current flow information, can perform a reject operation, and is connected back to a previous flow node, which modifies the flow information or business information before submitting the flow.
9. An apparatus, comprising:
one or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the smart contract-based workflow implementation method in a federated network as recited in any of claims 1-8.
10. A computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method of implementing a workflow based on smart contracts in a federated network as claimed in any one of claims 1-8.
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| CN112465448B (en) * | 2020-11-11 | 2023-07-07 | 中国人民大学 | Cross-organization workflow operation method and system based on blockchain |
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