CN115361298B - A Service Governance Method Based on Data Subscription Distribution Network - Google Patents

Abstract

The invention discloses a service treatment method based on a data subscription distribution network, which designs a three-layer service treatment architecture of a configuration layer, a proxy layer and a service layer by analyzing a DDS communication mechanism and a communication mode among simulation experiment network services, and provides a simulation network service configuration file, a network proxy module based on the DDS and a unified service interface protocol, thereby establishing a simulation experiment environment with low time delay, high availability and multi-language support. The invention can be used for assisting the simulation experiment construction of the embedded system, and greatly improves the quality and efficiency of the simulation experiment environment construction.

Description

A Service Governance Method Based on Data Subscription Distribution Network

technical field

The invention belongs to the technical field of computer networks, and in particular relates to a service management method based on a data subscription distribution network.

Background technique

The embedded software of traditional avionics systems is often a large and complex single business software, and each software communicates through the bus. When conducting simulation experiments, it is difficult to construct a simulation experiment environment. At the same time, the software is highly dependent on language and architecture, the cost of replacement is high, and the difficulty and complexity of simulation are very high. It is difficult to realize the integrated configuration of various software in a unified environment.

Different simulation software is deployed on different hosts, and communicates with each other through Ethernet into bus data. It is difficult to ensure reliable invocation and transmission of information, and it is easy to cause service invocation failure. How to realize the cross-language call of the simulation environment and realize the communication between services efficiently and quickly when the simulation environment is dynamic and changeable, and the resources such as communication bandwidth and storage are limited are difficult problems that need to be solved.

Contents of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a service management method based on data subscription distribution network, and designs three layers of configuration layer, proxy layer and service layer by analyzing the DDS communication mechanism and the communication mode between network services in the simulation experiment The service governance framework proposes a simulation network service configuration file, a DDS-based network proxy module and a unified service interface protocol, so as to establish a simulation experiment environment with low latency, high availability, and multi-language support. The invention can be used to assist in the construction of the simulation experiment of the embedded system, and greatly improves the quality and efficiency of the simulation experiment environment construction.

The technical solution adopted by the present invention to solve its technical problems comprises the steps:

Step 1: Define the three-layer architecture of the network service governance of the simulation experiment, including three layers: configuration layer, proxy layer and service layer;

Step 2: Define the simulated network service configuration file;

The simulated network service configuration file uses XML format to describe the information of the entire simulated network service, including the service name, interface, interface data format, and the calling relationship between services;

Step 3: define a DDS-based network proxy module;

The network proxy module runs on the proxy layer. The network proxy module realizes the communication between services based on DDS. By encapsulating it into a unified proxy module, it realizes the decoupling from the service layer, so that the service layer only focuses on its own business logic;

Step 4: Define the unified service interface protocol of the simulation software;

The simulation software unified service interface protocol provides a unified standard business interface and service name interface; the business interface is used as an interface for calling each other between services, and is used for the network agent module to subscribe to and distribute topics; the service name interface is used for the interface module to obtain the service name for Obtain service information from the configuration layer;

Step 5: Divide the monolithic architecture application into a group of services, and each service is refined into a single business function according to its specific business responsibilities; each service instance will have an agent paired with it and deployed on the same host or isolated The communication between space and service is carried out through the network proxy module;

Step 6: The configuration layer reads the simulation experiment network service configuration file;

Step 7: The network proxy module requests the service through HTTP to obtain the corresponding service name; requests the corresponding service configuration file from the configuration layer through the service name, and obtains the interface of the supporting service, the interface data format, and other service interfaces that need to be called;

Step 8: According to the service configuration file, the network proxy module communicates with the proxy modules deployed in other hosts or isolated spaces through the DDS subscription distribution mode with the obtained service interface as the subject.

Preferably, the service can be implemented using any language and tools.

The beneficial effects of the present invention are as follows:

The invention solves the problems of high software business complexity, difficult cross-language calling, high communication time delay between software and the like in the simulation environment construction process. It can decouple the simulation software, reduce the difficulty of cross-language calling, reduce the communication delay between software, and greatly improve the quality and efficiency of the simulation experiment environment construction.

Description of drawings

FIG. 1 is a schematic diagram of a three-layer architecture of the simulation experiment network service management of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The purpose of the present invention is to provide a general method for managing embedded system simulation experiment network services based on data distribution services, form a standard for embedded system simulation service governance, reduce the complexity of setting up the simulation experiment environment, and reduce the cost of each simulation software. Inter-communication delay, improve the efficiency of simulation experiments.

The invention provides a service management method for reducing simulation difficulty, which is used to assist the construction of an embedded system simulation environment.

A service governance method based on a data subscription distribution network, comprising the following steps:

Step 1: Define the three-layer architecture of the network service governance of the simulation experiment, including three layers: configuration layer, proxy layer and service layer;

Step 2: Define the simulated network service configuration file;

The simulated network service configuration file uses XML format to describe the information of the entire simulated network service, including the service name, interface, interface data format, and the calling relationship between services;

Step 3: define a DDS-based network agent module;

The network proxy module runs on the proxy layer. The network proxy module realizes the communication between services based on DDS. By encapsulating it into a unified proxy module, it realizes the decoupling from the service layer, so that the service layer only focuses on its own business logic;

Step 4: Define the unified service interface protocol of the simulation software;

The simulation software service focuses on a single business function and provides a unified standard business interface and service name interface. The business interface is used as the interface for calling each other between services. The interface name will be used for the topics that the network proxy module subscribes to and distributes. For example, A-Start represents the startup interface of service A, and the proxy module DDS distributes the interface data through the A-Start topic. The service name interface is used for the interface module to obtain the service name, which is used to obtain service information from the configuration layer.

Step 5: The service governance architecture divides large and complex single-architecture applications into a group of tiny services, and each service is refined into a single business function according to its specific business responsibilities. For a specific service, any language and tool can be used to implement it. Each service instance will have an agent paired with it and deployed on the same host or in an isolated space. The communication between services is performed through the agent module.

Step 6: The configuration layer reads the simulation experiment network service configuration file;

Step 7: The network proxy module requests the service through HTTP to obtain the corresponding service name; requests the corresponding service configuration file from the configuration layer through the service name, and obtains the interface of the supporting service, the interface data format, and other service interfaces that need to be called;

Step 8: According to the service configuration file, the network proxy module communicates with the proxy modules deployed in other hosts or isolated spaces through the DDS subscription distribution mode with the obtained service interface as the subject.

Specific examples:

The technical solution of the present invention is: by analyzing the DDS communication mechanism and the communication mode between the network services of the simulation experiment, a three-layer service management framework of the configuration layer, the agent layer and the service layer is designed, as shown in Figure 1, and the simulation network service configuration file, Based on the DDS network agent module and unified service interface protocol, a simulation experiment environment with low latency, high availability and multi-language support is established.

The specific embodiment of the present invention is as follows:

1) Select a simulation experiment software, analyze the business scope of the simulation experiment software, and split it into multiple independent services according to the business scope;

2) Encapsulate the divided services according to the unified service interface protocol, expose the service function interface, provide the service name interface, and return the service name;

3) Based on the DDS encapsulation proxy module, it mainly implements interfaces such as client creation, QoS setting, query publishing or subscribers, sending and receiving data, requesting configuration files, and requesting service names;

4) Write the overall service configuration file, and write the name, interface, interface data format, and call relationship between services into the XML file of all services;

5) Deploy each service and agent module to an independent host, and build a local area network through a network cable;

6) Test the network communication between each host in the LAN, and test the DDS communication;

7) Run the configuration center node and deploy the agent modules on each host, and check whether each agent module has obtained the corresponding service configuration file.

8) Run the service software, and check the call output and call time between services.

Claims (2)

1. A service management method based on a data subscription distribution network is characterized by comprising the following steps:

step 1: defining a three-layer architecture of simulation experiment network service management, wherein the three layers comprise a configuration layer, a proxy layer and a service layer;

step 2: defining a simulation network service configuration file;

the simulation network service configuration file adopts XML format to describe the information of the whole simulation network service, including the name of the service, the interface data format and the calling relation between the services;

step 3: defining a network proxy module based on DDS;

the network proxy module operates in the proxy layer, the network proxy module realizes communication between services based on DDS, and the network proxy module is packaged into a unified proxy module to realize decoupling with the service layer, so that the service layer is only focused on own business logic;

step 4: defining a unified service interface protocol of simulation software;

the simulation software unified service interface protocol provides a unified service interface and a service name interface; the service interface is used as an interface for calling each other between services and is used for subscribing the distributed theme by the network proxy module; the service name interface is used for acquiring a service name from the interface module and acquiring service information from the configuration layer;

step 5: dividing the single architecture application into a group of services, and refining each service into a single service function according to the specific service responsibility of the service; each service instance is provided with a proxy matched with the service instance and deployed in the same host or an isolated space, and communication between services is carried out through a network proxy module;

step 6: the configuration layer reads a simulation experiment network service configuration file;

step 7: the network proxy module acquires a corresponding service name from the service request through HTTP; requesting a corresponding service configuration file from a configuration layer through a service name, and acquiring an interface of a matched service, an interface data format and other service interfaces needing to be called;

step 8: and the network proxy module communicates with proxy modules deployed in other hosts or isolated spaces through a DDS subscription distribution mode by taking the acquired service interface as a theme according to the service configuration file.

2. A method of managing services based on a data subscription distribution network according to claim 1, wherein said services can be implemented in any language and tool.

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