public synchronized <T> Iterable<T> getPlugins(Class<T> wantedType) {
//
Iterable<CRaSHPlugin<?>> plugins = getPlugins();
//
List<T> tmp = Collections.emptyList();
//
for (CRaSHPlugin<?> plugin : plugins) {
Class<?> pluginType = plugin.getType();
if (wantedType.isAssignableFrom(pluginType)) {
switch (plugin.status) {
default:
case CRaSHPlugin.FAILED:
case CRaSHPlugin.INITIALIZED:
// Do nothing
break;
case CRaSHPlugin.CONSTRUCTED:
int status = CRaSHPlugin.FAILED;
try {
plugin.status = CRaSHPlugin.INITIALIZING;
plugin.init();
log.info("Initialized plugin " + plugin);
status = CRaSHPlugin.INITIALIZED;
} catch (Exception e) {
log.error("Could not initialize plugin " + plugin, e);
} finally {
plugin.status = status;
}
break;
case CRaSHPlugin.INITIALIZING:
throw new RuntimeException("Circular dependency");
}
//
if (plugin.status == CRaSHPlugin.INITIALIZED) {
if (tmp.isEmpty()) {
tmp = new ArrayList<T>();
}
T t = wantedType.cast(plugin);
tmp.add(t);
}
}
}
//
return tmp;
}
public synchronized Iterable<CRaSHPlugin<?>> getPlugins() {
if (plugins == null) {
List<CRaSHPlugin<?>> plugins = Utils.list(discovery.getPlugins());
for (CRaSHPlugin<?> plugin : plugins) {
plugin.context = context;
plugin.status = CRaSHPlugin.CONSTRUCTED;
}
this.plugins = plugins;
}
return plugins;
}