private Class<? extends Event> getRegistrationClass(Class<? extends Event> clazz) {
try {
clazz.getDeclaredMethod("getHandlerList");
return clazz;
} catch (NoSuchMethodException e) {
if ((clazz.getSuperclass() != null)
&& (!clazz.getSuperclass().equals(Event.class))
&& (Event.class.isAssignableFrom(clazz.getSuperclass()))) {
return getRegistrationClass(clazz.getSuperclass().asSubclass(Event.class));
}
}
throw new IllegalPluginAccessException(
"Unable to find handler list for event " + clazz.getName());
}
public Plugin loadPlugin(File file, boolean ignoreSoftDependencies)
throws InvalidPluginException, InvalidDescriptionException, UnknownDependencyException {
JavaPlugin result = null;
PluginDescriptionFile description = null;
if (!file.exists()) {
throw new InvalidPluginException(
new FileNotFoundException(String.format("%s does not exist", file.getPath())));
}
try {
JarFile jar = new JarFile(file);
JarEntry entry = jar.getJarEntry("plugin.yml");
if (entry == null) {
throw new InvalidPluginException(
new FileNotFoundException("Jar does not contain plugin.yml"));
}
InputStream stream = jar.getInputStream(entry);
description = new PluginDescriptionFile(stream);
stream.close();
jar.close();
} catch (IOException ex) {
throw new InvalidPluginException(ex);
} catch (YAMLException ex) {
throw new InvalidPluginException(ex);
}
File dataFolder = new File(file.getParentFile(), description.getName());
File oldDataFolder = getDataFolder(file);
// Found old data folder
if (dataFolder.equals(oldDataFolder)) {
// They are equal -- nothing needs to be done!
} else if (dataFolder.isDirectory() && oldDataFolder.isDirectory()) {
server
.getLogger()
.log(
Level.INFO,
String.format(
"While loading %s (%s) found old-data folder: %s next to the new one: %s",
description.getName(), file, oldDataFolder, dataFolder));
} else if (oldDataFolder.isDirectory() && !dataFolder.exists()) {
if (!oldDataFolder.renameTo(dataFolder)) {
throw new InvalidPluginException(
new Exception(
"Unable to rename old data folder: '"
+ oldDataFolder
+ "' to: '"
+ dataFolder
+ "'"));
}
server
.getLogger()
.log(
Level.INFO,
String.format(
"While loading %s (%s) renamed data folder: '%s' to '%s'",
description.getName(), file, oldDataFolder, dataFolder));
}
if (dataFolder.exists() && !dataFolder.isDirectory()) {
throw new InvalidPluginException(
new Exception(
String.format(
"Projected datafolder: '%s' for %s (%s) exists and is not a directory",
dataFolder, description.getName(), file)));
}
ArrayList<String> depend;
try {
depend = (ArrayList) description.getDepend();
if (depend == null) {
depend = new ArrayList<String>();
}
} catch (ClassCastException ex) {
throw new InvalidPluginException(ex);
}
for (String pluginName : depend) {
if (loaders == null) {
throw new UnknownDependencyException(pluginName);
}
PluginClassLoader current = loaders.get(pluginName);
if (current == null) {
throw new UnknownDependencyException(pluginName);
}
}
if (!ignoreSoftDependencies) {
ArrayList<String> softDepend;
try {
softDepend = (ArrayList) description.getSoftDepend();
if (softDepend == null) {
softDepend = new ArrayList<String>();
}
} catch (ClassCastException ex) {
throw new InvalidPluginException(ex);
}
for (String pluginName : softDepend) {
if (loaders == null) {
throw new UnknownSoftDependencyException(pluginName);
}
PluginClassLoader current = loaders.get(pluginName);
if (current == null) {
throw new UnknownSoftDependencyException(pluginName);
}
}
}
PluginClassLoader loader = null;
try {
URL[] urls = new URL[1];
urls[0] = file.toURI().toURL();
loader = new PluginClassLoader(this, urls, getClass().getClassLoader());
Class<?> jarClass = Class.forName(description.getMain(), true, loader);
Class<? extends JavaPlugin> plugin = jarClass.asSubclass(JavaPlugin.class);
Constructor<? extends JavaPlugin> constructor = plugin.getConstructor();
result = constructor.newInstance();
result.initialize(this, server, description, dataFolder, file, loader);
} catch (Throwable ex) {
throw new InvalidPluginException(ex);
}
loaders.put(description.getName(), loader);
return result;
}