99 lines
4.1 KiB
Java
99 lines
4.1 KiB
Java
package eu.mikroskeem.utils.bukkit;
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import eu.mikroskeem.utils.reflect.Reflect;
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import org.bukkit.Bukkit;
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import org.bukkit.plugin.java.JavaPlugin;
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import org.bukkit.plugin.java.JavaPluginLoader;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import static com.google.common.base.Preconditions.checkNotNull;
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public class ServerUtils {
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/**
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* Get server's TPS
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*
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* Will use PaperSpigot's API if available, reflection otherwise
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* @return double array of TPS (not rounded!), values are -1 if reflection failed
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*/
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public static double[] getTPS(){
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if(Reflect.getMethod(Bukkit.class, "getTps") != null) {
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return Bukkit.getTPS();
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} else {
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try {
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Class<?> MinecraftServerClass = checkNotNull(Reflect.getClass(
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String.format("net.minecraft.server.%s.MinecraftServer", getNmsVersion())));
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Method getServer = checkNotNull(Reflect.getMethod(MinecraftServerClass, "getServer"));
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Field recentTPS = checkNotNull(Reflect.getField(MinecraftServerClass, "recentTps"));
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Object server = checkNotNull(Reflect.invokeMethod(getServer, null));
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return (double[]) checkNotNull(Reflect.readField(recentTPS, server));
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} catch (NullPointerException ignored){}
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}
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return new double[]{-1, -1, -1};
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}
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/**
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* Get plugin class loader. Useful when you want to add new classes on runtime
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*
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* @param plugin Plugin which will be used to get plugin ClassLoader
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* @return Plugin ClassLoader
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*/
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@SuppressWarnings("unchecked")
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public static ClassLoader getPluginClassLoader(JavaPlugin plugin){
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/*
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* Note: CB/Spigot has PluginClassLoader package-private, PaperSpigot has public
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* So *DO NOT* try to cast this ClassLoader to PluginClassLoader, if you aim to be
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* compatible with other Bukkit-based servers
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* I repeat, *DO NOT USE* PluginClassLoader!
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*/
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JavaPluginLoader pl = (JavaPluginLoader) plugin.getPluginLoader();
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try {
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Field loadersField = checkNotNull(Reflect.getField(pl.getClass(), "loaders"));
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switch (getNmsVersion()){
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case "v1_8_R3":
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case "v1_9_R1":
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case "v1_9_R2":
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try {
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Map<String, ClassLoader> loaderMap = (Map<String, ClassLoader>)
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checkNotNull(Reflect.readField(loadersField, pl));
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return loaderMap.get(plugin.getName());
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}
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catch (NullPointerException ignored){}
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break;
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case "v1_10_R1":
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case "v1_11_R1":
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Class<?> pluginClassLoader = checkNotNull(Reflect.getClass(
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"org.bukkit.plugin.java.PluginClassLoader"));
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List<ClassLoader> loaders = (List<ClassLoader>)
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checkNotNull(Reflect.readField(loadersField, pl));
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Optional<ClassLoader> loader = loaders.stream()
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.filter(l->{
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Field f = checkNotNull(Reflect.getField(pluginClassLoader, "plugin"));
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return checkNotNull(((JavaPlugin)Reflect.readField(f, l)))
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.getName().equals(plugin.getName());
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}).findFirst();
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return loader.isPresent()?loader.get():null;
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}
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}
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catch (NullPointerException ignored){}
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return null;
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}
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/**
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* Get NMS version of current running server
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* @return NMS version or 0 length string
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*/
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public static String getNmsVersion(){
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try {
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String bukkitPackageName = Bukkit.getServer().getClass().getPackage().getName();
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return bukkitPackageName.substring(bukkitPackageName.lastIndexOf(".") + 1);
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} catch (NullPointerException e){
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return "";
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}
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}
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}
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