CN117112254A - Message passing method and device between heterogeneous systems and computer equipment - Google Patents
Message passing method and device between heterogeneous systems and computer equipment Download PDFInfo
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
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Abstract
The invention discloses a message transfer method, a device and computer equipment between heterogeneous systems. The method comprises the following steps: at the message producer side, the generated message enters a local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting way through a message storage service, and the message in the unified format is synchronized to a consumer through a message synchronization module; at the message consumer side, the message synchronization module performs persistence storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then the message is transmitted to the local message system after the message format conversion, and the message subscribing module acquires the message from the local message system after subscribing the system message; in the message transmission process, the current node information of the transmitted message is written into the message, and the path of the message transmission is recorded. The invention realizes message sharing among heterogeneous systems.
Description
Technical Field
The present invention relates to an electric power automation system, and in particular, to a method, an apparatus, and a computer device for message transmission between heterogeneous systems.
Background
A plurality of systems exist inside and outside the existing regulation center, and different systems often adopt different message frameworks. For example, open source message buses represented by Kafka and dockmq in the internet field are widely used in power grid company information management service systems and real-time monitoring service systems, respectively, along with self-developed message buses.
With the rapid development of computer communication technologies represented by "cloud objective intelligent chain", there is often a strong demand for information sharing among these heterogeneous systems. According to the traditional mode, two ends of a heterogeneous system are respectively familiar with message middleware of an opposite end or a familiar third party message middleware is additionally found to be used as a bridge for solving the problem of message among the systems, so that the information sharing among the heterogeneous systems is high in information interaction requirement, more in coordination work, limited in information sharing capacity among the heterogeneous systems, and difficult to integrate various information resources of a power grid, and the full sharing of the power grid data is difficult to realize. The development of business is urgent to propose a message technology for breaking open ecology of heterogeneous systems, so that messages of the opposite-end systems can be acquired by using a local message bus framework under the condition that different systems do not need to know about the knowledge of the opposite-end message bus.
In addition, the information exchange among the existing heterogeneous systems is less in general consideration, the problem of reliable operation of interaction among a plurality of systems exists, a unified redundancy deployment method and a cluster management mechanism are lacked, meanwhile, faults are difficult to diagnose, and the operation and maintenance complexity is high. Firstly, a long-time persistence mechanism of a large number of messages is lacking, short-time message caching can be realized in a push mode, and a large number of differentiated network conditions of clients in a wide area environment are difficult to deal with; secondly, the messages are usually processed sequentially, the grouping batch management is not carried out, and the message caching mode cannot meet the requirement of high-speed transmission; thirdly, as the data volume increases and the clients increase, single-point forwarding has a bottleneck in performance, and an expansion mechanism needs to be researched; meanwhile, the message sharing is carried out across the center, the chain of message circulation is long, faults are difficult to diagnose, and a message transmission fault positioning method is required to be provided.
Disclosure of Invention
The invention aims to: the invention provides a message transfer method, a message transfer device and computer equipment between heterogeneous systems, which solve the problems that message sharing is difficult, message transmission faults are difficult to locate when message circulation chains are longer.
The technical scheme is as follows: in a first aspect, a method for transferring messages between heterogeneous systems is provided, where a message is transferred between a producer and a consumer, where each of the producer and the consumer includes a local message system, a message subscription module, and a message synchronization module, and each of the producer and the consumer is configured with a message storage service, and the consumer further includes a message publishing module; the method comprises the following steps:
at the message producer side, the generated message enters a local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting way through a message storage service, and the message in the unified format is synchronized to a consumer through a message synchronization module;
at the message consumer end, the message synchronization module carries out lasting storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then the message with unified format is sent to the local message system after carrying out local message format conversion, and after subscribing the system message, the message consumer acquires the message from the local message system;
in the message transmission process, the current node information of the transmitted message is written into the message, and each node information carried by the message forms a message transmission path.
According to certain embodiments of the first aspect, the message subscription module, the message synchronization module, the message subscription service provided by the message publishing module, the message synchronization service and the message publishing service are managed based on an election mechanism of a distributed coordination service, wherein the election mechanism of the distributed coordination service refers to that a plurality of servers select service nodes of a designated message group through the election mechanism, the service nodes provide services, and when the service nodes providing services fail, tasks borne by the failed nodes can reselect the service nodes from the rest servers to process.
According to certain embodiments of the first aspect, based on an election mechanism of the distributed coordination service, the message subscription service divides message topics in the system into a plurality of groups, each group comprises a series of topics, and different groups can select respective message subscription service nodes to complete message subscription and reception of the message topics of the group.
According to certain embodiments of the first aspect, based on an election mechanism of the distributed coordination service, a server of a specific associated message topic set forwarding task is selected, and a unified format message is synchronized to the inside of a designated heterogeneous system, so that message forwarding between systems is realized.
According to certain embodiments of the first aspect, based on an election mechanism of the distributed coordination service, reading configuration through configuration management, obtaining message publishing subject grouping information, then selecting a service node for a message publishing task of each associated message subject set, and providing a message publishing service by the selected node.
According to certain embodiments of the first aspect, the current node information writing message of the transmission message comprises: the transmitted information carries link information, the link information comprises a link global ID, a father ID and a current ID, the link global ID and the current ID are generated when the information is forwarded for the first time and are transmitted along with the information, each transmission node generates a brand new current ID when receiving the information, the current ID of the upper stage carried by the information is used as the father ID of the information of the node, the global link ID is not modified in the process of transmitting the information, and the path for forwarding the information is determined according to the ID information.
According to certain embodiments of the first aspect, subscription information of message consumers is updated synchronously and periodically between systems.
According to certain embodiments of the first aspect, the message synchronization service is deployed on a gateway machine server, and when the gateway machine server includes a plurality of servers, the message synchronization service is deployed on each server.
In a second aspect, there is provided a messaging appliance between heterogeneous systems, comprising: the system comprises a local message system, a message subscription module, a message synchronization module and a message publishing module, and is configured with a message storage service;
when the message transmission device is used as a message producer, the generated message enters a local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting way through a message storage service, and the message in the unified format is synchronized to a consumer through a message synchronization module;
when the message transmission device is used as a message consumer, the message synchronization module carries out persistence storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then carries out local message format conversion on the unified format message and sends the unified format message to a local message system, and after the message subscription module subscribes the system message, the message consumer acquires the message from the local message system;
in the process of transmitting the message, the current node information of the transmitted message is written into the message, and each node information carried by the message forms a message transmission path.
In a third aspect, the present invention also provides a computer device comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs when executed by the processors implement the steps of the inter-heterogeneous system message transfer method according to the first aspect of the present invention.
The beneficial effects are that: the invention realizes the sharing of messages between heterogeneous systems, and through the message subscription and release technology between heterogeneous systems, the application of cross-system interactive messages only needs to use the message client of the local system to produce or consume the messages, does not need to perceive the message middleware actually used by the opposite terminal system, and shields the difference of the heterogeneous systems. Through a multi-machine coordination service mechanism, single-point faults of the service can be avoided, and the reliability of the service is ensured. A diagnostic method is provided that facilitates message link failure based on a message link ID.
Drawings
FIG. 1 is a schematic diagram of a multi-machine coordination service in an embodiment of the invention.
Fig. 2 is a diagram illustrating message sharing among heterogeneous systems in accordance with an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Example 1:
in the power grid dispatching system, message sharing among heterogeneous systems is divided into a message subscription service, a message publishing service and a message cross-system synchronization service, wherein the three services are based on distributed multi-machine coordination, and a plurality of service nodes are uniformly managed, as shown in fig. 1, and the message subscription service is taken as an example.
The message subscription service divides the message topics in the system into a plurality of groups, each group comprises a series of topics, and different groups can select respective message subscription service nodes to complete message subscription and receiving of the message topics in the group, so as to achieve the effect of load distribution. The message subscription service of each group operates in a multi-machine mode in the system, configuration information is read through configuration management, a plurality of nodes apply for occupation tasks to the distributed coordination service, and only nodes with successful application can actually subscribe the message of the group.
For example, a group is configured in a configuration file, a group contains a plurality of thematic messages, and all service nodes (servers) in the system select service hosts for the group according to a distributed coordination mechanism, wherein the selection principle is that the servers in the group are locked first to be selected as the hosts of the service. When a group is locked by a server, other servers cannot be locked. If the serving host fails, the other servers will again lock the group by election. Referring to fig. 1, a plurality of message subscription service nodes (a to N) deploying subscription services request to occupy subscription task 1 and subscription task 2 from a distributed coordination service, task 1 and task 2 respectively correspond to one group, and due to different transmission orders or network transmission conditions, node a preferentially locks task 1, and node B preferentially locks task 2, the distributed coordination service returns a response of successful subscription task 1 and a response of failed subscription task 2 to node a, returns a response of failed subscription task 1 and a response of successful subscription task 2 to node B, and transmits a response of failed subscription task 1 and a response of failed subscription task 2 to node N. At this time, the node a serves as a selected service node to provide the subscription service corresponding to the task 1, and the node B serves as a selected service node to provide the subscription service corresponding to the task 2.
It can be seen that the subscription service of the message is coordinated by a plurality of service nodes, when one of the service nodes fails, the service node is reselected from the rest machines by the message subscription task which is responsible for the failure node, so that the reliability of the service is ensured.
Similarly, the message cross-system synchronization service and the message release service realize the management of multi-machine coordination by the same mechanism. It should be noted that, in the system, an external proxy server for interacting with other systems is generally deployed, which is also called a gateway server, while other services use an internal network and do not directly communicate with the external system, so that a message cross-system synchronization service is only deployed on the proxy server/gateway server, that is, a server capable of communicating between the two systems.
Example 2:
as shown in fig. 2, a message passing implementation method based on multi-machine coordination includes the following steps:
step 1, a message consumer in a system B subscribes a required message to a local message system and informs a message subscription module of a required message theme, and the message subscription module synchronizes subscription theme information to a message subscription module of the system A through configuration provided by a configuration management module;
step 2, the message subscription module in the system A maps the subscription information topic of the system B to the message topic of the local system according to the topic mapping relation in the configuration management, and then subscribes to the system message, wherein the topic mapping relation is configured in the configuration file, for example, the topic 1 of the system B is the topic 1 of the unified format of the topic 1 of the system A;
step 3, the system A message producer sends the message to the local message system through the local message client interface;
step 4, the system A message subscription module receives subscribed messages, and after the received messages are subjected to message format conversion (converted into a unified format), the messages are stored in a lasting mode through a message storage service;
step 5, the system A message synchronization module pulls the message from the message storage service and synchronizes the message to the system B;
step 6, the message synchronization module of the system B durably stores the received message through the message storage service;
and 7, the message publishing module of the system B pulls the message through the message storage service, then converts the message into a message format (converts the format into a local message format) and sends the message to a local message system, and a message consumer acquires the message from the local message system by using a message client.
From the above steps, it can be seen that the message passing between heterogeneous systems is divided into three steps, the first step is that the subscription and receiving of the messages in the system are stored as unified format messages; the second step is that the gateway unified format information stored in the system is synchronized to the heterogeneous system; and thirdly, the heterogeneous system receives the unified format information outside the system, and reissues the unified format information inside the system after format conversion. As the message subscription, the message release and the message synchronization service use the multi-machine coordination mechanism, the message distribution is effectively carried out and the single point failure of the system is avoided.
Through the message subscription and release technology among heterogeneous systems, the application of cross-system interactive messages only needs to use the message client of the local system to produce or consume the messages, does not need to perceive the message middleware actually used by the opposite-end system, and shields the difference of the heterogeneous systems. The application can share the messages produced to the heterogeneous system according to the need and can also receive the messages produced by the heterogeneous system. It can be seen that the message subscription and publishing technology between heterogeneous systems is equivalent to the establishment of a gateway link in the form of software, so that the message transmission and sharing between heterogeneous systems can be realized.
The invention realizes the non-perception sharing of the messages among the systems through the subscription, the release and the synchronous service of the messages, and realizes the transmission of the messages through the coordination of multiple servers on the basis of the coordination service of the distributed multiple computers, thereby avoiding the single-point of service faults to the greatest extent and meeting the requirement of message sharing among heterogeneous systems.
The invention provides a message transmission device between heterogeneous systems, which comprises: the message transmission device can be used as a message producer or a message consumer, when the message is used as the message producer, the generated message enters the local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting mode through the message storage service, and the message in the unified format is synchronized to the consumer through the message synchronization module;
when the message transmitting device is used as a message consumer, the message synchronizing module performs lasting storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then the message is transmitted to the local message system after the message is subjected to message format conversion, and after the message subscribing module subscribes the system message, the message consumer acquires the message from the local message system.
Aiming at the subscription service, the subscription service provides the subscription service for the message consumer at the same time, and synchronizes the subscription information among the systems to inform other systems of which subscription information is active, thereby effectively preventing the resource waste of the subscription service. The subscription information of the message consumers can be synchronously updated among the systems at regular time.
Aiming at message synchronization, a server of a forwarding task of a specific 'related message theme set' is selected based on an election mechanism of a distributed coordination service, and unified format messages are synchronized into a designated heterogeneous system, so that message forwarding among the systems is realized. The synchronous service is deployed on the gateway machine server, meanwhile, the gateway machine server can be provided with a plurality of servers, and the message synchronous service can be deployed on each server.
Aiming at the information release, based on the distributed coordination service, reading configuration through configuration management to obtain information release subject grouping information, then selecting service nodes for the information release task of each associated information subject set, and providing the release service of the information by the selected nodes. The message publishing service converts the acquired unified format message into an internal message of the system through the message format, namely, the function of converting the local message format of the unified format message is realized. When the application of the system needs to receive the forwarded message, only a message receiving mechanism in the system is called, and the system from which the message is received is not needed to be perceived.
In the message transmission process, message link information including a link global ID, a parent ID and a current ID is carried, and when the message is forwarded for the first time, a global link ID and a current ID are generated and are transmitted along with the message. For example, when a message in the system is collected by the server for the first time, a unique identifier (such as the identifier of uuid) is automatically generated, and then the identifier is stored in a message header in a uniform format, and then the message is transmitted to the next forwarding node. Each transmission node generates a brand new current ID, and the current ID of the previous stage carried by the message is used as the father ID of the node message. The global link IDs are not modified during the message passing process, from which the path of message forwarding can be determined. When the message is lost, which part of forwarding information is lost can be checked according to the forwarding path information, so that the link information provides a reliable basis for diagnosing the failure of the message link.
The present invention also provides a computer device comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, which when executed by the processors implement the steps of the inter-heterogeneous system message passing method according to the present invention.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow of the flowcharts, and combinations of flows in the flowcharts, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows.
Claims (10)
1. A message transmission method between heterogeneous systems, which is characterized in that messages are transmitted between a producer and a consumer, wherein the producer and the consumer respectively comprise a local message system, a message subscription module and a message synchronization module, and are respectively provided with a message storage service, and the consumer also comprises a message release module; the method comprises the following steps:
at the message producer side, the generated message enters a local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting way through a message storage service, and the message in the unified format is synchronized to a consumer through a message synchronization module;
at the message consumer end, the message synchronization module carries out lasting storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then the message with the unified format is sent to the local message system after carrying out local message format conversion, and after subscribing the system message, the message consumer acquires the message from the local message system;
in the message transmission process, the current node information of the transmitted message is written into the message, and each node information carried by the message forms a message transmission path.
2. The method of claim 1, wherein the message subscription service, the message synchronization service, the message publishing service and the message subscribing service provided by the message subscribing module, the message synchronizing module and the message publishing module are managed based on an election mechanism of a distributed coordination service, wherein the election mechanism of the distributed coordination service refers to that a plurality of servers select service nodes of a designated message group through the election mechanism, the service nodes provide services, and when the service nodes providing the services fail, tasks borne by the failed nodes re-select the service nodes from the rest of servers for processing.
3. The method of claim 2, wherein the message subscription service groups message topics in the system into groups, each group comprising a series of topics, and wherein different groups select respective message subscription service nodes to complete message subscription and reception for the group of message topics based on an election mechanism of the distributed coordination service.
4. The method of claim 2, wherein the server for forwarding tasks of the set of specific associated message topics is selected based on an election mechanism of the distributed coordination service, and the unified format message is synchronized within the designated heterogeneous system to enable message forwarding between the systems.
5. The method according to claim 2, wherein based on an election mechanism of the distributed coordination service, reading configuration through configuration management to obtain message distribution topic grouping information, and then selecting service nodes for message distribution tasks of each associated message topic set, and providing message distribution services by the selected nodes.
6. The method of claim 1, wherein transmitting the current node information write message of the message comprises: the transmitted information carries link information, the link information comprises a link global ID, a father ID and a current ID, the link global ID and the current ID are generated when the information is forwarded for the first time and are transmitted along with the information, each transmission node generates a brand new current ID when receiving the information, the current ID of the upper stage carried by the information is used as the father ID of the information of the node, the global link ID is not modified in the process of transmitting the information, and the path for forwarding the information is determined according to the ID information.
7. The method of claim 1, wherein subscription information for message consumers is updated synchronously and periodically between systems.
8. The method of claim 1, wherein the message synchronization service is deployed on a gateway server, and wherein when the gateway server comprises a plurality of servers, the message synchronization service is deployed on each server.
9. A messaging apparatus between heterogeneous systems, comprising: the system comprises a local message system, a message subscription module, a message synchronization module and a message publishing module, and is configured with a message storage service;
when the message transmission device is used as a message producer, the generated message enters a local message system, after subscribing the system message, the message subscription module carries out unified format conversion on the received message, the message is stored in a lasting way through a message storage service, and the message in the unified format is synchronized to a consumer through a message synchronization module;
when the message transmission device is used as a message consumer, the message synchronization module carries out persistence storage on the received message through the message storage service, the message publishing module pulls the message through the message storage service, then carries out local message format conversion on the message with uniform format and sends the message to a local message system, and the message subscription module subscribes the system message and then the message consumer acquires the message from the local message system;
in the process of transmitting the message, the current node information of the transmitted message is written into the message, and each node information carried by the message forms a message transmission path.
10. A computer device, comprising:
one or more processors;
a memory;
and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, which when executed by the processors implement the steps of the inter-heterogeneous system messaging method of any of claims 1-8.
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