| Note |
|---|
This is a draft of possible migration to OSGi |
Manifest attributes
Sonar Plugin - https://github.com/SonarSource/sonar-update-center/blob/master/sonar-update-center-common/src/main/java/org/sonar/updatecenter/common/PluginManifest.java
OSGi Bundle - http://www.osgi.org/javadoc/r4v42/index.html?org/osgi/framework/Constants.html
Sonar Plugin | OSGi Bundle | Notes |
|---|---|---|
Plugin-Key | Bundle-SymbolicName | |
Plugin-Version | Bundle-Version | |
Plugin-Class | Bundle-Activator ? | |
Plugin-Name | Bundle-Name | |
Plugin-Description | Bundle-Description | |
Plugin-Homepage | Bundle-DocURL | |
Plugin-Dependencies | Bundle-ClassPath | |
Plugin-ChildFirstClassLoader | not needed | |
Plugin-Base | Fragment-Host | Fragment bundle can't be referenced from another manifest. Fragment bundle cannot load classes. Fragment treated as optional bundle. |
Sonar-Version | Require-Bundle | |
"org.sonar.plugin.<key>.api.*" | Export-Package | |
Plugin-License | Bundle-Copyright | |
Plugin-BuildDate |
| |
Plugin-IssueTrackerUrl | Bundle-ContactAddress | |
Plugin-Organization | Bundle-Vendor | |
Plugin-TermsConditionsUrl |
| |
| Bundle-UpdateLocation |
Usage
We have a lot of routines for installation and uninstallation of plugins and for creation of classloaders.
Here is example how to launch embedded Equinox ( org.eclipse.osgi:org.eclipse.osgi:3.6.0.v20100517 - no additional dependencies, size about 1 Mb ) :
| Code Block | ||
|---|---|---|
| ||
EquinoxFactory factory = new EquinoxFactory();
Map<String, Object> config = new HashMap<String, Object>();
config.put("osgi.configuration.area", "/tmp/osgi-dir/");
Framework framework = factory.newFramework(config);
framework.start();
BundleContext context = framework.getBundleContext();
Bundle bundle = context.installBundle("file:/..."); // Jar file or directory, seems that "http://" supported too
...
Class<?> cls = bundle.loadClass("...");
...
framework.stop();
|
OSGi also provides routines to correctly compare versions - see http://www.osgi.org/javadoc/r4v42/index.html?org/osgi/framework/Version.html.
