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Improved plugin API

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This commit is contained in:
RaphiMC 2023-05-29 13:08:42 +02:00
parent a718506d68
commit 79f77da4be
2 changed files with 34 additions and 13 deletions
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27
src/main/java/net/raphimc/viaproxy/plugins/PluginManager.java
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@ -57,7 +57,7 @@ public class PluginManager {
} }
} }
File[] files = PLUGINS_DIR.listFiles(); final File[] files = PLUGINS_DIR.listFiles();
if (files == null) return; if (files == null) return;
for (File file : files) { for (File file : files) {
@ -71,34 +71,35 @@ public class PluginManager {
} }
private static void loadAndScanJar(final File file) throws Throwable { private static void loadAndScanJar(final File file) throws Throwable {
URL url = file.toURI().toURL(); final URL url = file.toURI().toURL();
TransformerManager transformerManager = new TransformerManager(new URLClassProvider(ROOT_CLASS_PROVIDER, url)); final TransformerManager transformerManager = new TransformerManager(new URLClassProvider(ROOT_CLASS_PROVIDER, url));
InjectionClassLoader loader = new InjectionClassLoader(transformerManager, PluginManager.class.getClassLoader(), url); final InjectionClassLoader loader = new InjectionClassLoader(transformerManager, PluginManager.class.getClassLoader(), url);
InputStream viaproxyYml = loader.getResourceAsStream("viaproxy.yml"); final InputStream viaproxyYml = loader.getResourceAsStream("viaproxy.yml");
if (viaproxyYml == null) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a viaproxy.yml"); if (viaproxyYml == null) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a viaproxy.yml");
Map<String, Object> yaml = YAML.load(viaproxyYml); final Map<String, Object> yaml = YAML.load(viaproxyYml);
if (!yaml.containsKey("name")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a name attribute in the viaproxy.yml"); if (!yaml.containsKey("name")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a name attribute in the viaproxy.yml");
if (!yaml.containsKey("author")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a author attribute in the viaproxy.yml"); if (!yaml.containsKey("author")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a author attribute in the viaproxy.yml");
if (!yaml.containsKey("version")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a version attribute in the viaproxy.yml"); if (!yaml.containsKey("version")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a version attribute in the viaproxy.yml");
if (!yaml.containsKey("main")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a main attribute in the viaproxy.yml"); if (!yaml.containsKey("main")) throw new IllegalStateException("Plugin '" + file.getName() + "' does not have a main attribute in the viaproxy.yml");
Semver minVersion = new Semver(yaml.getOrDefault("min-version", "0.0.0").toString()); final Semver minVersion = new Semver(yaml.getOrDefault("min-version", "0.0.0").toString());
if (!ViaProxy.VERSION.equals("${version}") && minVersion.isGreaterThan(ViaProxy.VERSION)) { if (!ViaProxy.VERSION.equals("${version}") && minVersion.isGreaterThan(ViaProxy.VERSION)) {
throw new IllegalStateException("Plugin '" + file.getName() + "' requires a newer version of ViaProxy (v" + minVersion + ")"); throw new IllegalStateException("Plugin '" + file.getName() + "' requires a newer version of ViaProxy (v" + minVersion + ")");
} }
String main = (String) yaml.get("main"); final String main = (String) yaml.get("main");
Class<?> mainClass = loader.loadClass(main); final Class<?> mainClass = loader.loadClass(main);
if (!ViaProxyPlugin.class.isAssignableFrom(mainClass)) { if (!ViaProxyPlugin.class.isAssignableFrom(mainClass)) {
throw new IllegalStateException("Class '" + mainClass.getName() + "' from '" + file.getName() + "' does not extend ViaProxyPlugin"); throw new IllegalStateException("Class '" + mainClass.getName() + "' from '" + file.getName() + "' does not extend ViaProxyPlugin");
} }
Object instance = mainClass.newInstance(); final Object instance = mainClass.newInstance();
ViaProxyPlugin plugin = (ViaProxyPlugin) instance; final ViaProxyPlugin plugin = (ViaProxyPlugin) instance;
PLUGINS.add(plugin);
plugin.init(yaml);
plugin.registerTransformers(transformerManager); plugin.registerTransformers(transformerManager);
plugin.onEnable(); plugin.onEnable();
Logger.LOGGER.info("Successfully loaded plugin '" + yaml.get("name") + "' by " + yaml.get("author") + " (v" + yaml.get("version") + ")"); Logger.LOGGER.info("Successfully loaded plugin '" + plugin.getName() + "' by " + plugin.getAuthor() + " (v" + plugin.getVersion() + ")");
PLUGINS.add(plugin);
} }
} }

20
src/main/java/net/raphimc/viaproxy/plugins/ViaProxyPlugin.java
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@ -19,11 +19,31 @@ package net.raphimc.viaproxy.plugins;
import net.lenni0451.classtransform.TransformerManager; import net.lenni0451.classtransform.TransformerManager;
import java.util.Map;
public abstract class ViaProxyPlugin { public abstract class ViaProxyPlugin {
private Map<String, Object> viaProxyYaml;
final void init(final Map<String, Object> viaProxyYaml) {
this.viaProxyYaml = viaProxyYaml;
}
public abstract void onEnable(); public abstract void onEnable();
public void registerTransformers(final TransformerManager transformerManager) { public void registerTransformers(final TransformerManager transformerManager) {
} }
public final String getName() {
return (String) this.viaProxyYaml.get("name");
}
public final String getAuthor() {
return (String) this.viaProxyYaml.get("author");
}
public final String getVersion() {
return (String) this.viaProxyYaml.get("version");
}
} }