protected List<PluginInfo<T>> scan(
LogSource logger,
String hosterpath,
final List<? extends LazyPlugin<T>> pluginCache,
final AtomicLong lastFolderModification)
throws Exception {
DirectoryStream<Path> stream = null;
final ArrayList<PluginInfo<T>> ret = new ArrayList<PluginInfo<T>>();
final long timeStamp = System.currentTimeMillis();
try {
long lastModified = lastFolderModification != null ? lastFolderModification.get() : -1;
final Path folder =
Application.getRootByClass(jd.SecondLevelLaunch.class, hosterpath).toPath();
final long lastFolderModified =
Files.readAttributes(folder, BasicFileAttributes.class).lastModifiedTime().toMillis();
if (lastModified > 0
&& lastFolderModified == lastModified
&& pluginCache != null
&& pluginCache.size() > 0) {
for (final LazyPlugin<T> lazyPlugin : pluginCache) {
final PluginInfo<T> pluginInfo = new PluginInfo<T>(lazyPlugin.getLazyPluginClass(), null);
pluginInfo.setLazyPlugin(lazyPlugin);
ret.add(pluginInfo);
}
return ret;
}
PluginClassLoaderChild cl = null;
MessageDigest md = null;
final String pkg = hosterpath.replace("/", ".");
final byte[] mdCache = new byte[32767];
final HashMap<String, List<LazyPlugin<T>>> lazyPluginClassMap;
if (pluginCache != null && pluginCache.size() > 0) {
lazyPluginClassMap = new HashMap<String, List<LazyPlugin<T>>>();
for (final LazyPlugin<T> lazyPlugin : pluginCache) {
List<LazyPlugin<T>> list =
lazyPluginClassMap.get(lazyPlugin.getLazyPluginClass().getClassName());
if (list == null) {
list = new ArrayList<LazyPlugin<T>>();
lazyPluginClassMap.put(lazyPlugin.getLazyPluginClass().getClassName(), list);
}
list.add(lazyPlugin);
}
} else {
lazyPluginClassMap = null;
}
if (lastFolderModification != null) {
lastFolderModification.set(lastFolderModified);
}
stream = Files.newDirectoryStream(folder, "*.class");
for (final Path path : stream) {
try {
final String pathFileName = path.getFileName().toString();
final String className = pathFileName.substring(0, pathFileName.length() - 6);
if (className.indexOf("$") < 0 && !PluginController.IGNORELIST.contains(className)) {
byte[] sha256 = null;
final BasicFileAttributes pathAttr =
Files.readAttributes(path, BasicFileAttributes.class);
if (lazyPluginClassMap != null) {
final List<LazyPlugin<T>> lazyPlugins = lazyPluginClassMap.get(className);
if (lazyPlugins != null && lazyPlugins.size() > 0) {
final LazyPluginClass lazyPluginClass = lazyPlugins.get(0).getLazyPluginClass();
if (lazyPluginClass != null
&& (lazyPluginClass.getLastModified() == pathAttr.lastModifiedTime().toMillis()
|| ((md = MessageDigest.getInstance("SHA-256")) != null
&& (sha256 =
PluginController.getFileHashBytes(path.toFile(), md, mdCache))
!= null
&& Arrays.equals(sha256, lazyPluginClass.getSha256())))) {
for (final LazyPlugin<T> lazyPlugin : lazyPlugins) {
// logger.finer("Cached: " + className + "|" + lazyPlugin.getDisplayName() + "|"
// +
// lazyPluginClass.getRevision());
final PluginInfo<T> pluginInfo = new PluginInfo<T>(lazyPluginClass, null);
pluginInfo.setLazyPlugin(lazyPlugin);
ret.add(pluginInfo);
}
continue;
}
}
}
Class<T> pluginClass = null;
long[] infos = null;
try {
if (cl == null) {
cl = PluginClassLoader.getInstance().getChild();
}
if (md == null) {
md = MessageDigest.getInstance("SHA-256");
}
pluginClass = (Class<T>) cl.loadClass(pkg + "." + className);
if (!Modifier.isAbstract(pluginClass.getModifiers())
&& Plugin.class.isAssignableFrom(pluginClass)) {
infos = getPluginController().getInfos(pluginClass);
if (infos == null) {
continue;
}
} else {
continue;
}
} catch (final Throwable e) {
logger.finer("Failed: " + className);
logger.log(e);
continue;
}
if (sha256 == null) {
sha256 = PluginController.getFileHashBytes(path.toFile(), md, mdCache);
}
//
final LazyPluginClass lazyPluginClass =
new LazyPluginClass(
className,
sha256,
pathAttr.lastModifiedTime().toMillis(),
(int) infos[0],
infos[1]);
final PluginInfo<T> pluginInfo = new PluginInfo<T>(lazyPluginClass, pluginClass);
// logger.finer("Scaned: " + className + "|" + lazyPluginClass.getRevision());
ret.add(pluginInfo);
}
} catch (Throwable e) {
logger.finer("Failed: " + path);
logger.log(e);
}
}
return ret;
} finally {
logger.info(
"@PluginController(NIO): scan took "
+ (System.currentTimeMillis() - timeStamp)
+ "ms for "
+ ret.size());
if (stream != null) {
stream.close();
}
}
}
