https://github.com/dve/spring-boot-plugins-example

An example of building a spring-boot application extendable with plugins
https://github.com/dve/spring-boot-plugins-example

Last synced: 11 months ago
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An example of building a spring-boot application extendable with plugins

• Host: GitHub
• URL: https://github.com/dve/spring-boot-plugins-example
• Owner: dve
• License: apache-2.0
• Created: 2017-01-20T11:14:46.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-01-20T12:38:06.000Z (over 9 years ago)
• Last Synced: 2025-02-02T00:52:11.431Z (over 1 year ago)
• Language: Java
• Size: 14.6 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# spring-boot-plugins-example

An example of building a spring-boot application extendable with plugins.

## Plugins? Why not osgi?

This approach has some weak points:

  * There is not separation between the plugins, its just all on one classpath at runtime. So be careful if you import dependencies in a plugin - they my conflict with the ones from another plugin

  * You can only install plugins before you start the application, not at runtime

  * You can not remove or update plugins at runtime

But if you can live with this, it has some advantages too:

  * No osgi runtime needed  

  * One plugin can totally use the other. An extension of the database like the team plugin is not possible with osgi bundles AFAIK

  * Simply use spring in all parts of your application

  

## Description

This demo uses vaadin for the UI and spring-data-jpa with geodb and hibernate for persistence.

  

## Usage

1. Clone the reopsitory

2. Build the stuff ``mvn install``

3. Start the application: ``cd application/target`` and then: ``java -jar application-0.0.1-SNAPSHOT.jar``

Now the application starts just with the people plugin. To add the team plugin:

1. Stop the application

2. Create a folder called ``lib`` next to ``application-0.0.1-SNAPSHOT.jar`` and place ``plugin-team-0.0.1-SNAPSHOT.jar`` in it.

3. Start the application again

Now the application starts with both plugins.

## Layout



plugin

  
A pom with the dependencies need and common classes for all plugins. In this case just the MenuEntry stuff

  
application

  
This contains the spring-boot application

  
plugin-*

  
This modules contain the implementation of the modules.