CN112988274B - Microservice gateway plug-in dynamic loading method, device, system and storage medium thereof - Google Patents

Abstract

The present invention relates to the field of network technology, in particular to a method, device, system and storage medium for dynamic loading of microservice gateway plug-ins. When the plug-in file changes, get the current plug-in file; release the currently cached plug-in instance, and then instantiate the current plug-in file to get a new plug-in instance and cache it; cache the new plug-in instance Adapt to a plug-in filter; add the plug-in filter to the filter chain of the gateway to build a new filter chain; in the present invention, the requirements of gateway filtering can be adjusted without restarting the gateway service, and hot swapping is realized functions, which effectively improve the user experience.

Description

Microservice gateway plug-in dynamic loading method, device, system and storage medium thereof

technical field

The present invention relates to the technical field of image processing, in particular to a method for dynamically loading a microservice gateway plug-in, a dynamic loading device for a microservice gateway plug-in, a dynamic loading system for a microservice gateway plug-in, and a readable memory storing the above method medium.

Background technique

With the rapid development of network technology, the utilization rate of microservices is also increasing; among them, microservices is an architectural style, which divides a single application into small service units, and the HTTP API is used between microservices. Resource access and manipulation. There will be a gateway between the client and the server in the existing microservice, and all external requests will first pass through the gateway layer; the function of the gateway is to provide unified entry, authentication verification, Functions of dynamic routing and coupling reduction; and Spring Cloud is a comprehensive suite of components commonly used in the market for microservice architecture solutions. Among them, Spring Cloud Gateway is the gateway in Spring Cloud. Gateway is to provide a simple and effective The way to route the API, and provide some filter functions.

In the existing Spring Cloud Gateway, when users need to adjust the filtering requirements of the gateway, they need to modify and add custom filter classes on the basis of the gateway source code, and then compile and package a series of actions, and finally It is necessary to restart the gateway service to complete the customization requirements; therefore, it does not support dynamic loading and hot swapping of plug-ins, so that users cannot quickly adjust the filtering requirements of the gateway, which greatly affects the user experience.

Contents of the invention

In order to overcome the above-mentioned defects, the object of the present invention is to provide a method, device, system and readable storage medium storing the method for dynamically loading microservice gateway plug-ins that can realize hot swapping.

The purpose of the present invention is achieved through the following technical solutions:

The present invention is a microservice gateway plug-in dynamic loading method, which includes:

Perform real-time monitoring on the storage manager, and obtain the current plug-in file when the plug-in file stored in the storage manager is detected to be changed;

Release the currently cached plug-in instance, and then instantiate the current plug-in file to obtain a new plug-in instance and cache it;

Adapt the cached new plug-in instance to a plug-in filter;

The plug-in filter is added to the filter chain of the gateway to construct a new filter chain.

In the present invention, the monitoring includes:

Make adjustments to the plugin files in the storage manager.

In the present invention, said adjusting the plug-in files in the storage manager includes:

Upload, remove and modify the plug-in files in the storage manager.

In the present invention, adding the plug-in filter to the filter chain of the gateway, and constructing a new filter chain includes:

The built-in filter in the gateway and the plug-in filter are added to the filter chain in a predetermined order to construct a new filter chain.

In the present invention, when it is detected that the plug-in file stored in the storage manager changes, obtaining the current plug-in file includes:

Read the definition identifier of the plug-in file stored in the storage manager, and determine whether the definition identifier has changed, and if so, determine whether the plug-in file in the plug-in instance currently cached by the plug-in file is the same, if not same, get the current plugin file.

In the present invention, the real-time monitoring of the storage manager includes:

Receive the access request from the client, and when the access request matches the route configured by the gateway, perform real-time monitoring on the storage manager.

In the present invention, after the new filter chain is constructed, it includes:

The received access requests are filtered according to the new filtering chain, and the filtered access requests are sent to the server.

Based on the same idea, the present invention also provides a microservice gateway plug-in dynamic loading device, which includes:

A storage management module, the storage management module is used to manage and store plug-in files;

A monitoring management module, the monitoring management module is connected to the storage management module, and is used for real-time monitoring of the storage management module, and when it is detected that the plug-in files stored in the storage management module are changed, the storage management module is obtained. The current plug-in file in the module drives the instance cache module and the monitoring management module; adapts the cached new plug-in instance to a plug-in filter, adds the plug-in filter to the filter chain of the gateway, and builds a new filter chain;

An instance cache module, the instance cache module is connected to the monitoring management module, and is used to release the currently cached plug-in instance or cache a new plug-in instance according to the driver of the monitoring management module;

An instantiation module, the instantiation module is respectively connected with the instance cache module and the monitoring management module, and is used to instantiate the plug-in file obtained by the monitoring management module to obtain a new plug-in instance.

Based on the same idea, the present invention also provides a microservice gateway plug-in dynamic loading system, which includes: a client, a server, and a gateway;

The gateway is set between the client and the server, and the gateway is provided with the above-mentioned microservice gateway plug-in dynamic loading device.

Based on the same idea, the present invention also provides a computer-readable program storage medium, which stores computer program instructions, and when the computer program instructions are executed by a computer, the computer is made to execute the above method.

In the microservice gateway plug-in dynamic loading method of the present invention, it monitors the change of the plug-in file in real time, instantiates the updated plug-in file to form a new plug-in filter, and reads the new plug-in filter to dynamically The loading of the plug-in is completed, so the user can adjust the requirements of the gateway filtering without restarting the gateway service, and realizes the function of hot swapping, which effectively improves the user experience.

Description of drawings

For ease of illustration, the present invention is described in detail by the following preferred embodiments and accompanying drawings.

Fig. 1 is a schematic workflow diagram of an embodiment of the microservice gateway plug-in dynamic loading method of the present invention;

Fig. 2 is a schematic workflow diagram of another embodiment of the microservice gateway plug-in dynamic loading method of the present invention;

Fig. 3 is a schematic diagram of the logical structure of the microservice gateway plug-in dynamic loading device of the present invention;

Fig. 4 is a schematic diagram of the logical structure of the microservice gateway plug-in dynamic loading system of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

A kind of Spring Cloud Gateway gateway plug-in dynamic loading method of the present invention is specifically described below with an embodiment, please refer to Fig. 1, and it comprises:

S101. Real-time monitoring of the storage manager

The storage manager is monitored in real time; wherein, more than one plug-in file is stored in the storage manager, and the plug-in file is packaged as a Jar file package; in this embodiment, it is specifically: real-time monitoring of the Jar in the storage manager Whether the package has changed.

S102. Get the current plug-in file

When it is detected that the plug-in file stored in the storage manager changes, the current plug-in file is obtained; wherein, the plug-in file changes include: a new Jar file package is uploaded, the Jar file package is deleted, the Jar file package The content of is changed; users can adjust the Jar file package according to their specific filtering requirements.

S103. Release the current plug-in instance

Release the currently cached plug-in instance. In this embodiment, the last plug-in instance is cached in the gateway. Since a new plug-in instance needs to be generated in the subsequent steps, the current cached plug-in instance needs to be updated in this step. freed.

S104. Instantiate the new plug-in file

Instantiate the current plug-in file, get a new plug-in instance and cache it; among them, instantiation refers to the process of creating an object with a class in object-oriented programming. It is an abstract concept Class, the process specific to the object of this class.

S105. Adapt the new plug-in instance to a plug-in filter

Adapt the cached new plug-in instance into a plug-in filter, and at the same time, collect all plug-in filters for use when building a filter chain;

S106. Build a new filtering chain

The plug-in filter is added to the filter chain of the gateway to construct a new filter chain; therefore, the gateway can execute the filter request according to its new filter chain without restarting.

A kind of Spring Cloud Gateway gateway plug-in dynamic loading method of the present invention is described in detail with another embodiment below, please refer to Fig. 2, and it comprises:

S201. Receive an access request from the client

Receive the access request from the client, and when the access request matches the route configured by the gateway, perform real-time monitoring on the storage manager.

S202. Adjust the plug-in file

Adjust the plug-in files in the storage manager; specifically, upload, remove, and modify the plug-in files in the storage manager.

S203. Real-time monitoring of the storage manager

The storage manager is monitored in real time; wherein, more than one plug-in file is stored in the storage manager, the plug-in file is packaged as a Jar file package, and the plug-in file is provided with a definition mark; in this embodiment, its specific For: to monitor in real time whether the Jar file package in the storage manager has changed.

S204. Get the current plug-in file

Read the definition identifier of the plug-in file stored in the storage manager, and determine whether the definition identifier has changed, and if so, determine whether the plug-in file in the plug-in instance currently cached by the plug-in file is the same, if not If they are the same, then obtain the current plug-in file; in this embodiment, the definition identifier is used to judge whether the plug-in file has been changed. When the definition identifier changes, it is judged whether the content of the plug-in file is the same. The plug-in instance that has been cached can effectively avoid the problem of frequent initialization of plug-ins with the same content; among them, the change of the plug-in file includes: a new Jar file package is uploaded, the Jar file package is deleted, and the content of the Jar file package is changed; the user can Adjust the Jar file package according to its specific filtering requirements.

S205. Release the current plug-in instance

Release the currently cached plug-in instance. In this embodiment, the last plug-in instance is cached in the gateway. Since a new plug-in instance needs to be generated in the subsequent steps, the current cached plug-in instance needs to be updated in this step. freed.

S206. Instantiate the new plug-in file

Instantiate the current plug-in file, get a new plug-in instance and cache it; among them, instantiation refers to the process of creating an object with a class in object-oriented programming. It is an abstract concept Class, the process specific to the object of this class.

S207. Adapt the new plug-in instance to a plug-in filter

Adapt the cached new plug-in instance into a plug-in filter, and at the same time, collect all plug-in filters for use when building a filter chain;

S208. Build a new filtering chain

sort the built-in filters in the gateway and the plug-in filters according to their sorting numbers from small to large, and then add them to the filter chain to construct a new filter chain; wherein, the built-in filter is a preset filter in the gateway, In this embodiment, a new filtering chain is obtained by integrating the built-in filter and the plug-in filter.

S209. Filter the access request according to the new filtering chain

The received access requests are filtered according to the new filtering chain, and the filtered access requests are sent to the server.

The present invention includes a computer-readable storage medium on which a program product capable of implementing the above-mentioned method in this specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes program code, and when the program product is run on a terminal device, the program code is used to make the The terminal device executes the steps according to various exemplary embodiments of the present invention described in the "Exemplary Method" section above in this specification.

The program product may reside on any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: electrical connection with one or more conductors, portable disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

A computer readable signal medium may include a data signal carrying readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

The program code contained on the above readable medium can be transmitted by any appropriate medium, including but not limited to wireless, cable, optical cable, RF, etc., or any suitable combination of the above.

The following is a specific description of a Spring Cloud Gateway gateway plug-in dynamic loading device of the present invention in an embodiment, please refer to Figure 3, which includes:

The storage management module Plugin Definition Store, the storage management module is used to manage and store the plug-in files; it specifically includes: uploading, removing, modifying and reading the plug-in files, wherein the plug-in files are Jar file packages, Users can adjust the Jar file package according to their specific filtering requirements.

The monitoring management module Plugin Loader, the monitoring management module is connected with the storage management module, and is used for real-time monitoring of the storage management module. When it is detected that the plug-in files stored in the storage management module change, such as: A new plug-in file is uploaded, an existing plug-in file is removed, an existing plug-in file is modified, etc.; the current plug-in file in the storage management module is obtained and the instance cache module and the monitoring management module are driven; and the cached The new plug-in instance is adapted as a plug-in filter, and the plug-in filter is added to the filter chain of the gateway to build a new filter chain; therefore, the gateway can perform filtering requests according to its new filter chain without restarting .

An instance cache module Plugin Class Loader Manager, the instance cache module is connected to the monitoring management module, and is used to release the currently cached plug-in instance or cache a new plug-in instance according to the driver of the monitoring management module .

The instantiation module Plugin Class Loader, the instantiation module is respectively connected with the instance cache module and the monitoring management module, and is used to instantiate the plug-in file obtained by the monitoring management module to obtain a new plug-in instance; wherein, the instantiation is In object-oriented programming, the process of creating an object with a class is called instantiation; it is the process of converting an abstract concept class to a specific object of that class.

A kind of Spring Cloud Gateway gateway plug-in dynamic loading system of the present invention is specifically described below with an embodiment, please refer to Fig. 4, and it comprises:

Client, server, and gateway; where the gateway is Spring Cloud Gateway;

The gateway is set between the client and the server, and the gateway is provided with the above-mentioned microservice gateway plug-in dynamic loading device. The specific process is: the client initiates a request, and when the initiated request matches the configured route, the plug-in dynamic loading device will collect built-in filters and plug-in filters, and rebuild and execute the filter chain; so that the client The initiated request is filtered by the filter chain and then sent to the server to perform corresponding operations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. mean that the embodiments are combined A specific feature, structure, material, or characteristic described or exemplified is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. A method for dynamically loading a microservice gateway plug-in, comprising: Perform real-time monitoring on the storage manager, and obtain the current plug-in file when the plug-in file stored in the storage manager is detected to be changed; Release the currently cached plug-in instance, and then instantiate the current plug-in file to obtain a new plug-in instance and cache it; Adapt the cached new plug-in instance to a plug-in filter; The plug-in filter is added to the filter chain of the gateway to construct a new filter chain. 2. The microservice gateway plug-in dynamic loading method according to claim 1, wherein the monitoring includes before the plug-in file stored in the storage manager is changed: Make adjustments to the plugin files in the storage manager. 3. The microservice gateway plug-in dynamic loading method according to claim 2, wherein said adjusting the plug-in file in the storage manager comprises: Upload, remove and modify the plug-in files in the storage manager. 4. The microservice gateway plug-in dynamic loading method according to claim 3, wherein said adding the plug-in filter to the filter chain of the gateway, and constructing a new filter chain include: The built-in filter in the gateway and the plug-in filter are added to the filter chain in a predetermined order to construct a new filter chain. 5. The microservice gateway plug-in dynamic loading method according to claim 4, characterized in that, when it is detected that the plug-in file stored in the storage manager changes, obtaining the current plug-in file includes: Read the definition identifier of the plug-in file stored in the storage manager, and determine whether the definition identifier has changed, and if so, determine whether the plug-in file in the plug-in instance currently cached by the plug-in file is the same, if not same, get the current plugin file. 6. The microservice gateway plug-in dynamic loading method according to claim 5, characterized in that, before performing real-time monitoring on the storage manager, the method includes: Receive the access request from the client, and when the access request matches the route configured by the gateway, perform real-time monitoring on the storage manager. 7. The microservice gateway plug-in dynamic loading method according to claim 6, characterized in that, after constructing a new filter chain, the method includes: The received access requests are filtered according to the new filtering chain, and the filtered access requests are sent to the server. 8. A microservice gateway plug-in dynamic loading device, characterized in that it comprises: The plug-in monitoring module is used to monitor the storage manager in real time, and obtain the current plug-in file when the plug-in file stored in the storage manager is detected to be changed; The instance cache module is used to release the currently cached plug-in instance, and then instantiate the current plug-in file to obtain a new plug-in instance and cache it; an adaptation module, adapted to adapt the cached new plug-in instance to a plug-in filter; and The filter chain building module is used to add the plug-in filter to the filter chain of the gateway to build a new filter chain. 9. A computer-readable program storage medium, characterized in that it stores computer program instructions, and when the computer program instructions are executed by a computer, the computer is made to perform the method according to any one of claims 1 to 7 .

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