This commit is contained in:
parent
f0450e754d
commit
8a23f668b3
2
pom.xml
2
pom.xml
@ -6,7 +6,7 @@
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<groupId>cn.lunadeer</groupId>
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<artifactId>ColorfulMap</artifactId>
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<version>1.0</version>
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<version>1.1</version>
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<packaging>jar</packaging>
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<name>ColorfulMap</name>
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@ -20,6 +20,8 @@ public final class ColorfulMap extends JavaPlugin {
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new MapManager().init();
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Metrics metrics = new Metrics(this, 21443);
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XLogger.info("ColorfulMap 已加载");
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XLogger.info("版本: " + getPluginMeta().getVersion());
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// https://patorjk.com/software/taag/#p=display&f=Big&t=ColorfulMap
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863
src/main/java/cn/lunadeer/colorfulmap/Metrics.java
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863
src/main/java/cn/lunadeer/colorfulmap/Metrics.java
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@ -0,0 +1,863 @@
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package cn.lunadeer.colorfulmap;
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import org.bukkit.Bukkit;
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import org.bukkit.configuration.file.YamlConfiguration;
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import org.bukkit.entity.Player;
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import org.bukkit.plugin.Plugin;
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import org.bukkit.plugin.java.JavaPlugin;
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import javax.net.ssl.HttpsURLConnection;
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import java.io.*;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.nio.charset.StandardCharsets;
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import java.util.*;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.ScheduledThreadPoolExecutor;
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import java.util.concurrent.TimeUnit;
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import java.util.function.BiConsumer;
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import java.util.function.Consumer;
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import java.util.function.Supplier;
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import java.util.logging.Level;
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import java.util.stream.Collectors;
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import java.util.zip.GZIPOutputStream;
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public class Metrics {
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private final Plugin plugin;
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private final MetricsBase metricsBase;
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/**
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* Creates a new Metrics instance.
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*
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* @param plugin Your plugin instance.
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* @param serviceId The id of the service. It can be found at <a
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* href="https://bstats.org/what-is-my-plugin-id">What is my plugin id?</a>
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*/
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public Metrics(JavaPlugin plugin, int serviceId) {
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this.plugin = plugin;
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// Get the config file
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File bStatsFolder = new File(plugin.getDataFolder().getParentFile(), "bStats");
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File configFile = new File(bStatsFolder, "config.yml");
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YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
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if (!config.isSet("serverUuid")) {
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config.addDefault("enabled", true);
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config.addDefault("serverUuid", UUID.randomUUID().toString());
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config.addDefault("logFailedRequests", false);
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config.addDefault("logSentData", false);
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config.addDefault("logResponseStatusText", false);
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// Inform the server owners about bStats
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config
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.options()
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.header(
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"bStats (https://bStats.org) collects some basic information for plugin authors, like how\n"
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+ "many people use their plugin and their total player count. It's recommended to keep bStats\n"
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+ "enabled, but if you're not comfortable with this, you can turn this setting off. There is no\n"
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+ "performance penalty associated with having metrics enabled, and data sent to bStats is fully\n"
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+ "anonymous.")
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.copyDefaults(true);
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try {
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config.save(configFile);
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} catch (IOException ignored) {
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}
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}
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// Load the data
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boolean enabled = config.getBoolean("enabled", true);
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String serverUUID = config.getString("serverUuid");
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boolean logErrors = config.getBoolean("logFailedRequests", false);
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boolean logSentData = config.getBoolean("logSentData", false);
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boolean logResponseStatusText = config.getBoolean("logResponseStatusText", false);
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metricsBase =
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new MetricsBase(
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"bukkit",
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serverUUID,
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serviceId,
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enabled,
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this::appendPlatformData,
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this::appendServiceData,
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null,
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//submitDataTask -> Bukkit.getScheduler().runTask(plugin, submitDataTask),
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plugin::isEnabled,
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(message, error) -> this.plugin.getLogger().log(Level.WARNING, message, error),
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(message) -> this.plugin.getLogger().log(Level.INFO, message),
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logErrors,
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logSentData,
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logResponseStatusText);
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}
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/**
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* Shuts down the underlying scheduler service.
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*/
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public void shutdown() {
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metricsBase.shutdown();
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}
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/**
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* Adds a custom chart.
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*
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* @param chart The chart to add.
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*/
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public void addCustomChart(CustomChart chart) {
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metricsBase.addCustomChart(chart);
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}
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private void appendPlatformData(JsonObjectBuilder builder) {
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builder.appendField("playerAmount", getPlayerAmount());
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builder.appendField("onlineMode", Bukkit.getOnlineMode() ? 1 : 0);
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builder.appendField("bukkitVersion", Bukkit.getVersion());
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builder.appendField("bukkitName", Bukkit.getName());
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builder.appendField("javaVersion", System.getProperty("java.version"));
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builder.appendField("osName", System.getProperty("os.name"));
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builder.appendField("osArch", System.getProperty("os.arch"));
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builder.appendField("osVersion", System.getProperty("os.version"));
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builder.appendField("coreCount", Runtime.getRuntime().availableProcessors());
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}
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private void appendServiceData(JsonObjectBuilder builder) {
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builder.appendField("pluginVersion", plugin.getDescription().getVersion());
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}
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private int getPlayerAmount() {
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try {
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// Around MC 1.8 the return type was changed from an array to a collection,
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// This fixes java.lang.NoSuchMethodError:
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// org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
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Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
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return onlinePlayersMethod.getReturnType().equals(Collection.class)
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? ((Collection<?>) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
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: ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
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} catch (Exception e) {
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// Just use the new method if the reflection failed
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return Bukkit.getOnlinePlayers().size();
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}
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}
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public static class MetricsBase {
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/**
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* The version of the Metrics class.
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*/
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public static final String METRICS_VERSION = "3.0.2";
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private static final String REPORT_URL = "https://bStats.org/api/v2/data/%s";
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private final ScheduledExecutorService scheduler;
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private final String platform;
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private final String serverUuid;
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private final int serviceId;
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private final Consumer<JsonObjectBuilder> appendPlatformDataConsumer;
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private final Consumer<JsonObjectBuilder> appendServiceDataConsumer;
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private final Consumer<Runnable> submitTaskConsumer;
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private final Supplier<Boolean> checkServiceEnabledSupplier;
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private final BiConsumer<String, Throwable> errorLogger;
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private final Consumer<String> infoLogger;
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private final boolean logErrors;
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private final boolean logSentData;
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private final boolean logResponseStatusText;
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private final Set<CustomChart> customCharts = new HashSet<>();
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private final boolean enabled;
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/**
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* Creates a new MetricsBase class instance.
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*
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* @param platform The platform of the service.
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* @param serviceId The id of the service.
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* @param serverUuid The server uuid.
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* @param enabled Whether or not data sending is enabled.
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* @param appendPlatformDataConsumer A consumer that receives a {@code JsonObjectBuilder} and
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* appends all platform-specific data.
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* @param appendServiceDataConsumer A consumer that receives a {@code JsonObjectBuilder} and
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* appends all service-specific data.
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* @param submitTaskConsumer A consumer that takes a runnable with the submit task. This can be
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* used to delegate the data collection to a another thread to prevent errors caused by
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* concurrency. Can be {@code null}.
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* @param checkServiceEnabledSupplier A supplier to check if the service is still enabled.
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* @param errorLogger A consumer that accepts log message and an error.
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* @param infoLogger A consumer that accepts info log messages.
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* @param logErrors Whether or not errors should be logged.
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* @param logSentData Whether or not the sent data should be logged.
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* @param logResponseStatusText Whether or not the response status text should be logged.
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*/
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public MetricsBase(
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String platform,
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String serverUuid,
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int serviceId,
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boolean enabled,
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Consumer<JsonObjectBuilder> appendPlatformDataConsumer,
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Consumer<JsonObjectBuilder> appendServiceDataConsumer,
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Consumer<Runnable> submitTaskConsumer,
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Supplier<Boolean> checkServiceEnabledSupplier,
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BiConsumer<String, Throwable> errorLogger,
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Consumer<String> infoLogger,
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boolean logErrors,
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boolean logSentData,
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boolean logResponseStatusText) {
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ScheduledThreadPoolExecutor scheduler =
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new ScheduledThreadPoolExecutor(1, task -> new Thread(task, "bStats-Metrics"));
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// We want delayed tasks (non-periodic) that will execute in the future to be
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// cancelled when the scheduler is shutdown.
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// Otherwise, we risk preventing the server from shutting down even when
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// MetricsBase#shutdown() is called
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scheduler.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
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this.scheduler = scheduler;
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this.platform = platform;
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this.serverUuid = serverUuid;
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this.serviceId = serviceId;
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this.enabled = enabled;
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this.appendPlatformDataConsumer = appendPlatformDataConsumer;
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this.appendServiceDataConsumer = appendServiceDataConsumer;
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this.submitTaskConsumer = submitTaskConsumer;
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this.checkServiceEnabledSupplier = checkServiceEnabledSupplier;
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this.errorLogger = errorLogger;
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this.infoLogger = infoLogger;
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this.logErrors = logErrors;
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this.logSentData = logSentData;
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this.logResponseStatusText = logResponseStatusText;
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checkRelocation();
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if (enabled) {
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// WARNING: Removing the option to opt-out will get your plugin banned from
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// bStats
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startSubmitting();
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}
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}
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public void addCustomChart(CustomChart chart) {
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this.customCharts.add(chart);
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}
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public void shutdown() {
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scheduler.shutdown();
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}
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private void startSubmitting() {
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final Runnable submitTask =
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() -> {
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if (!enabled || !checkServiceEnabledSupplier.get()) {
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// Submitting data or service is disabled
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scheduler.shutdown();
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return;
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}
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if (submitTaskConsumer != null) {
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submitTaskConsumer.accept(this::submitData);
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} else {
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this.submitData();
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}
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};
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// Many servers tend to restart at a fixed time at xx:00 which causes an uneven
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// distribution of requests on the
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// bStats backend. To circumvent this problem, we introduce some randomness into
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// the initial and second delay.
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// WARNING: You must not modify and part of this Metrics class, including the
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// submit delay or frequency!
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// WARNING: Modifying this code will get your plugin banned on bStats. Just
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// don't do it!
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long initialDelay = (long) (1000 * 60 * (3 + Math.random() * 3));
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long secondDelay = (long) (1000 * 60 * (Math.random() * 30));
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scheduler.schedule(submitTask, initialDelay, TimeUnit.MILLISECONDS);
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scheduler.scheduleAtFixedRate(
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submitTask, initialDelay + secondDelay, 1000 * 60 * 30, TimeUnit.MILLISECONDS);
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}
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private void submitData() {
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final JsonObjectBuilder baseJsonBuilder = new JsonObjectBuilder();
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appendPlatformDataConsumer.accept(baseJsonBuilder);
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final JsonObjectBuilder serviceJsonBuilder = new JsonObjectBuilder();
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appendServiceDataConsumer.accept(serviceJsonBuilder);
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JsonObjectBuilder.JsonObject[] chartData =
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customCharts.stream()
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.map(customChart -> customChart.getRequestJsonObject(errorLogger, logErrors))
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.filter(Objects::nonNull)
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.toArray(JsonObjectBuilder.JsonObject[]::new);
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serviceJsonBuilder.appendField("id", serviceId);
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serviceJsonBuilder.appendField("customCharts", chartData);
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baseJsonBuilder.appendField("service", serviceJsonBuilder.build());
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baseJsonBuilder.appendField("serverUUID", serverUuid);
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baseJsonBuilder.appendField("metricsVersion", METRICS_VERSION);
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JsonObjectBuilder.JsonObject data = baseJsonBuilder.build();
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scheduler.execute(
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() -> {
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try {
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// Send the data
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sendData(data);
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} catch (Exception e) {
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// Something went wrong! :(
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if (logErrors) {
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errorLogger.accept("Could not submit bStats metrics data", e);
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}
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}
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});
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}
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private void sendData(JsonObjectBuilder.JsonObject data) throws Exception {
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if (logSentData) {
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infoLogger.accept("Sent bStats metrics data: " + data.toString());
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}
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String url = String.format(REPORT_URL, platform);
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HttpsURLConnection connection = (HttpsURLConnection) new URL(url).openConnection();
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// Compress the data to save bandwidth
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byte[] compressedData = compress(data.toString());
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connection.setRequestMethod("POST");
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connection.addRequestProperty("Accept", "application/json");
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connection.addRequestProperty("Connection", "close");
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connection.addRequestProperty("Content-Encoding", "gzip");
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connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
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connection.setRequestProperty("Content-Type", "application/json");
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connection.setRequestProperty("User-Agent", "Metrics-Service/1");
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connection.setDoOutput(true);
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try (DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
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outputStream.write(compressedData);
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}
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StringBuilder builder = new StringBuilder();
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try (BufferedReader bufferedReader =
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new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
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String line;
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while ((line = bufferedReader.readLine()) != null) {
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builder.append(line);
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}
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}
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if (logResponseStatusText) {
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infoLogger.accept("Sent data to bStats and received response: " + builder);
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}
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}
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/**
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* Checks that the class was properly relocated.
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*/
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private void checkRelocation() {
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// You can use the property to disable the check in your test environment
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if (System.getProperty("bstats.relocatecheck") == null
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|| !System.getProperty("bstats.relocatecheck").equals("false")) {
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// Maven's Relocate is clever and changes strings, too. So we have to use this
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// little "trick" ... :D
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final String defaultPackage =
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new String(new byte[]{'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's'});
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||||
final String examplePackage =
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new String(new byte[]{'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
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// We want to make sure no one just copy & pastes the example and uses the wrong
|
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// package names
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if (MetricsBase.class.getPackage().getName().startsWith(defaultPackage)
|
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|| MetricsBase.class.getPackage().getName().startsWith(examplePackage)) {
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throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
|
||||
}
|
||||
}
|
||||
}
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||||
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||||
/**
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||||
* Gzips the given string.
|
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*
|
||||
* @param str The string to gzip.
|
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* @return The gzipped string.
|
||||
*/
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private static byte[] compress(final String str) throws IOException {
|
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if (str == null) {
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||||
return null;
|
||||
}
|
||||
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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||||
try (GZIPOutputStream gzip = new GZIPOutputStream(outputStream)) {
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gzip.write(str.getBytes(StandardCharsets.UTF_8));
|
||||
}
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||||
return outputStream.toByteArray();
|
||||
}
|
||||
}
|
||||
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||||
public static class SimplePie extends CustomChart {
|
||||
|
||||
private final Callable<String> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public SimplePie(String chartId, Callable<String> callable) {
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super(chartId);
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||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
String value = callable.call();
|
||||
if (value == null || value.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("value", value).build();
|
||||
}
|
||||
}
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||||
|
||||
public static class MultiLineChart extends CustomChart {
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||||
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||||
private final Callable<Map<String, Integer>> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
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||||
public MultiLineChart(String chartId, Callable<Map<String, Integer>> callable) {
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||||
super(chartId);
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||||
this.callable = callable;
|
||||
}
|
||||
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||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
|
||||
Map<String, Integer> map = callable.call();
|
||||
if (map == null || map.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
boolean allSkipped = true;
|
||||
for (Map.Entry<String, Integer> entry : map.entrySet()) {
|
||||
if (entry.getValue() == 0) {
|
||||
// Skip this invalid
|
||||
continue;
|
||||
}
|
||||
allSkipped = false;
|
||||
valuesBuilder.appendField(entry.getKey(), entry.getValue());
|
||||
}
|
||||
if (allSkipped) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
|
||||
}
|
||||
}
|
||||
|
||||
public static class AdvancedPie extends CustomChart {
|
||||
|
||||
private final Callable<Map<String, Integer>> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public AdvancedPie(String chartId, Callable<Map<String, Integer>> callable) {
|
||||
super(chartId);
|
||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
|
||||
Map<String, Integer> map = callable.call();
|
||||
if (map == null || map.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
boolean allSkipped = true;
|
||||
for (Map.Entry<String, Integer> entry : map.entrySet()) {
|
||||
if (entry.getValue() == 0) {
|
||||
// Skip this invalid
|
||||
continue;
|
||||
}
|
||||
allSkipped = false;
|
||||
valuesBuilder.appendField(entry.getKey(), entry.getValue());
|
||||
}
|
||||
if (allSkipped) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
|
||||
}
|
||||
}
|
||||
|
||||
public static class SimpleBarChart extends CustomChart {
|
||||
|
||||
private final Callable<Map<String, Integer>> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public SimpleBarChart(String chartId, Callable<Map<String, Integer>> callable) {
|
||||
super(chartId);
|
||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
|
||||
Map<String, Integer> map = callable.call();
|
||||
if (map == null || map.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
for (Map.Entry<String, Integer> entry : map.entrySet()) {
|
||||
valuesBuilder.appendField(entry.getKey(), new int[]{entry.getValue()});
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
|
||||
}
|
||||
}
|
||||
|
||||
public static class AdvancedBarChart extends CustomChart {
|
||||
|
||||
private final Callable<Map<String, int[]>> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public AdvancedBarChart(String chartId, Callable<Map<String, int[]>> callable) {
|
||||
super(chartId);
|
||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
|
||||
Map<String, int[]> map = callable.call();
|
||||
if (map == null || map.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
boolean allSkipped = true;
|
||||
for (Map.Entry<String, int[]> entry : map.entrySet()) {
|
||||
if (entry.getValue().length == 0) {
|
||||
// Skip this invalid
|
||||
continue;
|
||||
}
|
||||
allSkipped = false;
|
||||
valuesBuilder.appendField(entry.getKey(), entry.getValue());
|
||||
}
|
||||
if (allSkipped) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
|
||||
}
|
||||
}
|
||||
|
||||
public static class DrilldownPie extends CustomChart {
|
||||
|
||||
private final Callable<Map<String, Map<String, Integer>>> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public DrilldownPie(String chartId, Callable<Map<String, Map<String, Integer>>> callable) {
|
||||
super(chartId);
|
||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
public JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
|
||||
Map<String, Map<String, Integer>> map = callable.call();
|
||||
if (map == null || map.isEmpty()) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
boolean reallyAllSkipped = true;
|
||||
for (Map.Entry<String, Map<String, Integer>> entryValues : map.entrySet()) {
|
||||
JsonObjectBuilder valueBuilder = new JsonObjectBuilder();
|
||||
boolean allSkipped = true;
|
||||
for (Map.Entry<String, Integer> valueEntry : map.get(entryValues.getKey()).entrySet()) {
|
||||
valueBuilder.appendField(valueEntry.getKey(), valueEntry.getValue());
|
||||
allSkipped = false;
|
||||
}
|
||||
if (!allSkipped) {
|
||||
reallyAllSkipped = false;
|
||||
valuesBuilder.appendField(entryValues.getKey(), valueBuilder.build());
|
||||
}
|
||||
}
|
||||
if (reallyAllSkipped) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
|
||||
}
|
||||
}
|
||||
|
||||
public abstract static class CustomChart {
|
||||
|
||||
private final String chartId;
|
||||
|
||||
protected CustomChart(String chartId) {
|
||||
if (chartId == null) {
|
||||
throw new IllegalArgumentException("chartId must not be null");
|
||||
}
|
||||
this.chartId = chartId;
|
||||
}
|
||||
|
||||
public JsonObjectBuilder.JsonObject getRequestJsonObject(
|
||||
BiConsumer<String, Throwable> errorLogger, boolean logErrors) {
|
||||
JsonObjectBuilder builder = new JsonObjectBuilder();
|
||||
builder.appendField("chartId", chartId);
|
||||
try {
|
||||
JsonObjectBuilder.JsonObject data = getChartData();
|
||||
if (data == null) {
|
||||
// If the data is null we don't send the chart.
|
||||
return null;
|
||||
}
|
||||
builder.appendField("data", data);
|
||||
} catch (Throwable t) {
|
||||
if (logErrors) {
|
||||
errorLogger.accept("Failed to get data for custom chart with id " + chartId, t);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
return builder.build();
|
||||
}
|
||||
|
||||
protected abstract JsonObjectBuilder.JsonObject getChartData() throws Exception;
|
||||
}
|
||||
|
||||
public static class SingleLineChart extends CustomChart {
|
||||
|
||||
private final Callable<Integer> callable;
|
||||
|
||||
/**
|
||||
* Class constructor.
|
||||
*
|
||||
* @param chartId The id of the chart.
|
||||
* @param callable The callable which is used to request the chart data.
|
||||
*/
|
||||
public SingleLineChart(String chartId, Callable<Integer> callable) {
|
||||
super(chartId);
|
||||
this.callable = callable;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
|
||||
int value = callable.call();
|
||||
if (value == 0) {
|
||||
// Null = skip the chart
|
||||
return null;
|
||||
}
|
||||
return new JsonObjectBuilder().appendField("value", value).build();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* An extremely simple JSON builder.
|
||||
*
|
||||
* <p>While this class is neither feature-rich nor the most performant one, it's sufficient enough
|
||||
* for its use-case.
|
||||
*/
|
||||
public static class JsonObjectBuilder {
|
||||
|
||||
private StringBuilder builder = new StringBuilder();
|
||||
|
||||
private boolean hasAtLeastOneField = false;
|
||||
|
||||
public JsonObjectBuilder() {
|
||||
builder.append("{");
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends a null field to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendNull(String key) {
|
||||
appendFieldUnescaped(key, "null");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends a string field to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param value The value of the field.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, String value) {
|
||||
if (value == null) {
|
||||
throw new IllegalArgumentException("JSON value must not be null");
|
||||
}
|
||||
appendFieldUnescaped(key, "\"" + escape(value) + "\"");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends an integer field to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param value The value of the field.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, int value) {
|
||||
appendFieldUnescaped(key, String.valueOf(value));
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends an object to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param object The object.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, JsonObject object) {
|
||||
if (object == null) {
|
||||
throw new IllegalArgumentException("JSON object must not be null");
|
||||
}
|
||||
appendFieldUnescaped(key, object.toString());
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends a string array to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param values The string array.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, String[] values) {
|
||||
if (values == null) {
|
||||
throw new IllegalArgumentException("JSON values must not be null");
|
||||
}
|
||||
String escapedValues =
|
||||
Arrays.stream(values)
|
||||
.map(value -> "\"" + escape(value) + "\"")
|
||||
.collect(Collectors.joining(","));
|
||||
appendFieldUnescaped(key, "[" + escapedValues + "]");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends an integer array to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param values The integer array.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, int[] values) {
|
||||
if (values == null) {
|
||||
throw new IllegalArgumentException("JSON values must not be null");
|
||||
}
|
||||
String escapedValues =
|
||||
Arrays.stream(values).mapToObj(String::valueOf).collect(Collectors.joining(","));
|
||||
appendFieldUnescaped(key, "[" + escapedValues + "]");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends an object array to the JSON.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param values The integer array.
|
||||
* @return A reference to this object.
|
||||
*/
|
||||
public JsonObjectBuilder appendField(String key, JsonObject[] values) {
|
||||
if (values == null) {
|
||||
throw new IllegalArgumentException("JSON values must not be null");
|
||||
}
|
||||
String escapedValues =
|
||||
Arrays.stream(values).map(JsonObject::toString).collect(Collectors.joining(","));
|
||||
appendFieldUnescaped(key, "[" + escapedValues + "]");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Appends a field to the object.
|
||||
*
|
||||
* @param key The key of the field.
|
||||
* @param escapedValue The escaped value of the field.
|
||||
*/
|
||||
private void appendFieldUnescaped(String key, String escapedValue) {
|
||||
if (builder == null) {
|
||||
throw new IllegalStateException("JSON has already been built");
|
||||
}
|
||||
if (key == null) {
|
||||
throw new IllegalArgumentException("JSON key must not be null");
|
||||
}
|
||||
if (hasAtLeastOneField) {
|
||||
builder.append(",");
|
||||
}
|
||||
builder.append("\"").append(escape(key)).append("\":").append(escapedValue);
|
||||
hasAtLeastOneField = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Builds the JSON string and invalidates this builder.
|
||||
*
|
||||
* @return The built JSON string.
|
||||
*/
|
||||
public JsonObject build() {
|
||||
if (builder == null) {
|
||||
throw new IllegalStateException("JSON has already been built");
|
||||
}
|
||||
JsonObject object = new JsonObject(builder.append("}").toString());
|
||||
builder = null;
|
||||
return object;
|
||||
}
|
||||
|
||||
/**
|
||||
* Escapes the given string like stated in https://www.ietf.org/rfc/rfc4627.txt.
|
||||
*
|
||||
* <p>This method escapes only the necessary characters '"', '\'. and '\u0000' - '\u001F'.
|
||||
* Compact escapes are not used (e.g., '\n' is escaped as "\u000a" and not as "\n").
|
||||
*
|
||||
* @param value The value to escape.
|
||||
* @return The escaped value.
|
||||
*/
|
||||
private static String escape(String value) {
|
||||
final StringBuilder builder = new StringBuilder();
|
||||
for (int i = 0; i < value.length(); i++) {
|
||||
char c = value.charAt(i);
|
||||
if (c == '"') {
|
||||
builder.append("\\\"");
|
||||
} else if (c == '\\') {
|
||||
builder.append("\\\\");
|
||||
} else if (c <= '\u000F') {
|
||||
builder.append("\\u000").append(Integer.toHexString(c));
|
||||
} else if (c <= '\u001F') {
|
||||
builder.append("\\u00").append(Integer.toHexString(c));
|
||||
} else {
|
||||
builder.append(c);
|
||||
}
|
||||
}
|
||||
return builder.toString();
|
||||
}
|
||||
|
||||
/**
|
||||
* A super simple representation of a JSON object.
|
||||
*
|
||||
* <p>This class only exists to make methods of the {@link JsonObjectBuilder} type-safe and not
|
||||
* allow a raw string inputs for methods like {@link JsonObjectBuilder#appendField(String,
|
||||
* JsonObject)}.
|
||||
*/
|
||||
public static class JsonObject {
|
||||
|
||||
private final String value;
|
||||
|
||||
private JsonObject(String value) {
|
||||
this.value = value;
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
return value;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user