init repo

sponge/build.gradle

@@ -0,0 +1,49 @@
+//file:noinspection GrUnresolvedAccess
+plugins {
+    id 'java'
+    id 'com.github.johnrengelman.shadow' version '7.0.0'
+}
+
+group 'ru.dmitriymx'
+version '1.0-SNAPSHOT'
+jar.archiveBaseName.set(project.name)
+
+compileJava {
+    sourceCompatibility = targetCompatibility = JavaVersion.VERSION_1_8
+    options.encoding = 'UTF-8'
+}
+
+repositories {
+    mavenCentral()
+    maven { url 'https://repo.spongepowered.org/maven' }
+}
+
+dependencies {
+    implementation(project(':core'))
+
+    annotationProcessor 'org.projectlombok:lombok:1.18.20'
+    compileOnly 'org.projectlombok:lombok:1.18.20'
+
+    compileOnly('org.spongepowered:spongeapi:7.3.0') {
+        exclude(module: 'asm')
+        exclude(module: 'caffeine')
+        exclude(module: 'commons-lang3')
+        exclude(module: 'configurate-gson')
+        exclude(module: 'configurate-hocon')
+        exclude(module: 'configurate-yaml')
+        exclude(module: 'error_prone_annotations')
+        exclude(module: 'flow-math')
+        exclude(module: 'flow-noise')
+        exclude(module: 'gson')
+        exclude(module: 'guava')
+        exclude(module: 'jsr305')
+    }
+}
+
+shadowJar {
+    archiveBaseName.set('mc-mectics-sponge')
+    archiveVersion.set(project.version.toString())
+    archiveClassifier.set('')
+
+    relocate('assets', 'assets.minecraft_metrics')
+}

sponge/src/main/java/ru/dmitriymx/minecraft/metrics/sponge/MetricsPlugin.java

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+package ru.dmitriymx.minecraft.metrics.sponge;
+
+import com.google.inject.Inject;
+import com.typesafe.config.Config;
+import lombok.SneakyThrows;
+import org.spongepowered.api.config.ConfigDir;
+import org.spongepowered.api.event.Listener;
+import org.spongepowered.api.event.game.state.GameStartedServerEvent;
+import org.spongepowered.api.event.game.state.GameStoppingServerEvent;
+import org.spongepowered.api.plugin.Plugin;
+import org.spongepowered.api.plugin.PluginContainer;
+import ru.dmitriymx.minecraft.config.ConfigProvider;
+import ru.dmitriymx.minecraft.metrics.MetricsServer;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+@Plugin(id = "minecraft_metrics",
+		name = "MinecraftMetrics",
+		description = "Minecraft Prometheus Exporter",
+		version = "1.0",
+		authors = { "DmitriyMX" })
+@SuppressWarnings("unused")
+public class MetricsPlugin {
+
+    @Inject
+    private org.slf4j.Logger slf4jLogger;
+
+    @Inject
+    @ConfigDir(sharedRoot = false)
+    private Path pluginDataDirPath;
+
+    @Inject
+    private PluginContainer pluginContainer;
+
+    private MetricsServer metricsServer;
+
+    @Listener
+    @SneakyThrows
+    public void onGameStartedServerEvent(GameStartedServerEvent event) {
+        if (Files.notExists(pluginDataDirPath)) {
+            slf4jLogger.info("Create data dir: {}", pluginDataDirPath);
+            Files.createDirectories(pluginDataDirPath);
+        }
+
+        ConfigProvider configProvider = new SpongeConfigProvider(pluginContainer, pluginDataDirPath);
+        Config config = configProvider.get();
+
+        SpongeLogger logger = new SpongeLogger(slf4jLogger);
+        metricsServer = new MetricsServer(
+            config.getString("server.host"),
+            config.getInt("server.port"),
+            config.getString("server.endpoint"),
+            logger,
+            new SpongeInfoProvider()
+        );
+
+        //noinspection HttpUrlsUsage
+        logger.info("Start metrics server: http://{}:{}{}",
+            config.getString("server.host"),
+            config.getInt("server.port"),
+            config.getString("server.endpoint"));
+        metricsServer.start();
+    }
+
+    @Listener
+    public void onGameStoppingServerEvent(GameStoppingServerEvent event) {
+        metricsServer.stop();
+    }
+}

sponge/src/main/java/ru/dmitriymx/minecraft/metrics/sponge/SpongeConfigProvider.java

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+package ru.dmitriymx.minecraft.metrics.sponge;
+
+import com.typesafe.config.Config;
+import com.typesafe.config.ConfigFactory;
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+import org.spongepowered.api.asset.Asset;
+import org.spongepowered.api.plugin.PluginContainer;
+import ru.dmitriymx.minecraft.config.ConfigProvider;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
+
+@RequiredArgsConstructor
+public class SpongeConfigProvider implements ConfigProvider {
+
+    private final PluginContainer plugin;
+    private final Path pluginDataDirPath;
+
+    @Override
+    @SneakyThrows
+    public Config get() {
+        Optional<Asset> optionalAsset = plugin.getAsset("config-default.conf");
+        if (!optionalAsset.isPresent()) {
+            throw new RuntimeException("Where is 'config-default.conf'!!??");
+        }
+
+        Config defaultConfig = ConfigFactory.parseString(optionalAsset.get().readString());
+        Config config;
+        Path userConfigPath = pluginDataDirPath.resolve("config.conf");
+        if (Files.exists(userConfigPath)) {
+            Config userConfig = ConfigFactory.parseFile(userConfigPath.toFile());
+            config = userConfig.withFallback(defaultConfig).resolve();
+        } else {
+            config = defaultConfig.resolve();
+        }
+
+        return config;
+    }
+}

sponge/src/main/java/ru/dmitriymx/minecraft/metrics/sponge/SpongeInfoProvider.java

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+package ru.dmitriymx.minecraft.metrics.sponge;
+
+import org.spongepowered.api.Sponge;
+import ru.dmitriymx.minecraft.metrics.MinecraftInfoProvider;
+
+public class SpongeInfoProvider implements MinecraftInfoProvider {
+
+    @Override
+    public int playersOnline() {
+        return Sponge.getServer().getOnlinePlayers().size();
+    }
+
+    @Override
+    public double tps() {
+        return Sponge.getServer().getTicksPerSecond();
+    }
+}

sponge/src/main/java/ru/dmitriymx/minecraft/metrics/sponge/SpongeLogger.java

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+package ru.dmitriymx.minecraft.metrics.sponge;
+
+import lombok.RequiredArgsConstructor;
+import ru.dmitriymx.minecraft.logger.LoggerAdapter;
+
+@RequiredArgsConstructor
+public class SpongeLogger extends LoggerAdapter {
+
+    private final org.slf4j.Logger logger;
+
+    @Override
+    public void debug(String message) {
+        logger.debug(message);
+    }
+
+    @Override
+    public void debug(String message, Throwable throwable) {
+        logger.debug(message, throwable);
+    }
+
+    @Override
+    public void info(String message) {
+        logger.info(message);
+    }
+
+    @Override
+    public void warn(String message) {
+        logger.warn(message);
+    }
+
+    @Override
+    public void error(String message) {
+        logger.error(message);
+    }
+
+    @Override
+    public void error(String message, Throwable throwable) {
+        logger.error(message, throwable);
+    }
+}

sponge/src/main/resources/mcmod.info

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+[
+    {
+        "modid": "minecraft_metrics",
+        "name": "MinecraftMetrics",
+        "version": "1.0",
+        "description": "Minecraft Prometheus Exporter",
+        "authorList": [
+            "DmitriyMX"
+        ],
+        "dependencies": [
+            "spongeapi"
+        ],
+        "requiredMods": [
+            "spongeapi"
+        ]
+    }
+]