1 files changed, 59 insertions, 0 deletions
diff --git a/spark-velocity/src/main/java/me/lucko/spark/velocity/VelocityClassSourceLookup.java b/spark-velocity/src/main/java/me/lucko/spark/velocity/VelocityClassSourceLookup.java
new file mode 100644
index 0000000..4989bf4
--- /dev/null
+++ b/spark-velocity/src/main/java/me/lucko/spark/velocity/VelocityClassSourceLookup.java
@@ -0,0 +1,59 @@
+/*
+ * 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.velocity;
+
+import com.velocitypowered.api.plugin.PluginContainer;
+import com.velocitypowered.api.plugin.PluginManager;
+
+import me.lucko.spark.common.util.ClassSourceLookup;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class VelocityClassSourceLookup extends ClassSourceLookup.ByClassLoader {
+    private static final Class<?> PLUGIN_CLASS_LOADER;
+
+    static {
+        try {
+            PLUGIN_CLASS_LOADER = Class.forName("com.velocitypowered.proxy.plugin.PluginClassLoader");
+        } catch (ReflectiveOperationException e) {
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    private final PluginManager pluginManager;
+
+    public VelocityClassSourceLookup(PluginManager pluginManager) {
+        this.pluginManager = pluginManager;
+    }
+
+    @Override
+    public @Nullable String identify(ClassLoader loader) {
+        if (PLUGIN_CLASS_LOADER.isInstance(loader)) {
+            for (PluginContainer plugin : this.pluginManager.getPlugins()) {
+                Object instance = plugin.getInstance().orElse(null);
+                if (instance != null && instance.getClass().getClassLoader() == loader) {
+                    return plugin.getDescription().getName().orElseGet(() -> plugin.getDescription().getId());
+                }
+            }
+        }
+        return null;
+    }
+}