Getting List of active user plugins from custom content provider

[Alexej Geldt]

Hello dear friends.

I need to access a list of active user plugins from our own plugin. Is it actually possible?

Background:

We have two custom plugins.

Plugin A provides a web panel on issue view. Along with its primary features, it is supposed to render additional information under condition that another custom Plugin B is installed and active. But we dont want to have a dependency between A and B because B is completely optional and A should work without B.

Is there a possibility to find out wether plugin B is installed and active from plugin A content provider?

[Alexej Geldt · Accepted solution]

looks like i have found a solution.

public class APluginContentProvider extends AbstractJiraContextProvider {

	private final static String PLUGIN_B_KEY = "com.vendor.group.pluginB";
	private final PluginAccessor plugins;
	private boolean bPluginActive = false;	// false by default

	public APluginContentProvider(final PluginAccessor plugins) {
		// inject plugin accessor
		this.plugins = plugins;	
	}

	public Map getContextMap(final User user, final JiraHelper jiraHelper) {

		// check if plugin B is installed and enabled using plugin accessor
		final Plugin pluginB = plugins.getEnabledPlugin(PLUGIN_B_KEY);
		if (pluginB != null) {
			log.debug("found plugin B" + pluginB.getKey());
			bPluginActive = true;
		}
		contextMap.put("bPluginActive", bPluginActive);
		return contextMap;
	}
}

[Alexej Geldt]

my first guess would be to use com.atlassian.plugin.manager.DefaultPluginManager

this seems to be the right component to control plugins. However it does not implement any interface and cannot be constructor injectted. Any ideas?