1 files changed, 61 insertions, 0 deletions
diff --git a/spark-paper/src/main/java/me/lucko/spark/paper/PaperClassSourceLookup.java b/spark-paper/src/main/java/me/lucko/spark/paper/PaperClassSourceLookup.java
new file mode 100644
index 0000000..2c5f7c0
--- /dev/null
+++ b/spark-paper/src/main/java/me/lucko/spark/paper/PaperClassSourceLookup.java
@@ -0,0 +1,61 @@
+/*
+ * This file is part of spark.
+ *
+ *  Copyright (c) lucko (Luck) <luck@lucko.me>
+ *  Copyright (c) contributors
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package me.lucko.spark.paper;
+
+import me.lucko.spark.common.sampler.source.ClassSourceLookup;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.lang.reflect.Field;
+
+public class PaperClassSourceLookup extends ClassSourceLookup.ByClassLoader {
+    private static final Class<?> PLUGIN_CLASS_LOADER;
+    private static final Field PLUGIN_FIELD;
+
+    private static final Class<?> PAPER_PLUGIN_CLASS_LOADER;
+    private static final Field PAPER_PLUGIN_FIELD;
+
+    static {
+        try {
+            PLUGIN_CLASS_LOADER = Class.forName("org.bukkit.plugin.java.PluginClassLoader");
+            PLUGIN_FIELD = PLUGIN_CLASS_LOADER.getDeclaredField("plugin");
+            PLUGIN_FIELD.setAccessible(true);
+
+            PAPER_PLUGIN_CLASS_LOADER = Class.forName("io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader");
+            PAPER_PLUGIN_FIELD = PAPER_PLUGIN_CLASS_LOADER.getDeclaredField("loadedJavaPlugin");
+            PAPER_PLUGIN_FIELD.setAccessible(true);
+        } catch (ReflectiveOperationException e) {
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    @Override
+    public String identify(ClassLoader loader) throws ReflectiveOperationException {
+        if (PLUGIN_CLASS_LOADER.isInstance(loader)) {
+            JavaPlugin plugin = (JavaPlugin) PLUGIN_FIELD.get(loader);
+            return plugin.getName();
+        } else if (PAPER_PLUGIN_CLASS_LOADER.isInstance(loader)) {
+            JavaPlugin plugin = (JavaPlugin) PAPER_PLUGIN_FIELD.get(loader);
+            return plugin.getName();
+        }
+        return null;
+    }
+}
+