aboutsummaryrefslogtreecommitdiff
path: root/spark-velocity/src/main/java/me/lucko/spark/velocity/VelocityClassSourceLookup.java
blob: bcb81766cbad78edbf38ef246f97b95dcd4a0667 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/*
 * 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;

import java.util.HashMap;
import java.util.Map;

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 Map<ClassLoader, String> classLoadersToPlugin;

    public VelocityClassSourceLookup(PluginManager pluginManager) {
        this.classLoadersToPlugin = new HashMap<>();
        for (PluginContainer plugin : pluginManager.getPlugins()) {
            plugin.getInstance().ifPresent(instance -> {
                String id = plugin.getDescription().getName().orElseGet(() -> plugin.getDescription().getId());
                this.classLoadersToPlugin.put(instance.getClass().getClassLoader(), id);
            });
        }
    }

    @Override
    public @Nullable String identify(ClassLoader loader) {
        if (PLUGIN_CLASS_LOADER.isInstance(loader)) {
            return this.classLoadersToPlugin.get(loader);
        }
        return null;
    }
}