Merge pull request #4 from gnmyt/features/statistics

📊 Added the stats feature & fixed a bug

Author: gnmyt

.gitignore

@@ -1,3 +1,3 @@
 .idea
-MinecraftDashboard.iml
+MCDash.iml
 /target/

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>de.gnmyt</groupId>
     <artifactId>MCDash</artifactId>
-    <version>1.0.3</version>
+    <version>1.0.4</version>
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>

src/main/java/de/gnmyt/mcdash/api/controller/StatsController.java

@@ -0,0 +1,97 @@
+package de.gnmyt.mcdash.api.controller;
+
+import de.gnmyt.mcdash.MinecraftDashboard;
+import de.gnmyt.mcdash.api.tasks.TPSRunnable;
+import org.bukkit.Bukkit;
+
+import java.io.File;
+
+public class StatsController {
+
+    private final File SERVER_FOLDER = new File(".");
+    private final TPSRunnable TPS_RUNNABLE = new TPSRunnable();
+
+    private MinecraftDashboard instance;
+
+    /**
+     * Basic constructor of the {@link StatsController}
+     * @param instance The main instance of the plugin
+     */
+    public StatsController(MinecraftDashboard instance) {
+        this.instance = instance;
+        startTPSRunnable();
+    }
+
+    /**
+     * Starts the {@link TPSRunnable}
+     * The runnable gets the current tps from the server
+     */
+    private void startTPSRunnable() {
+        Bukkit.getScheduler().scheduleSyncRepeatingTask(instance, TPS_RUNNABLE, 0, 1);
+    }
+
+    /**
+     * Gets the current tps
+     * @return the current tps
+     */
+    public long getTPS() {
+        return TPS_RUNNABLE.getCurrentRoundedTPS();
+    }
+
+    /**
+     * Gets the amount of free memory in the jvm
+     * @return the amount of free memory in the jvm
+     */
+    public long getFreeMemory() {
+        return Runtime.getRuntime().freeMemory();
+    }
+
+    /**
+     * Gets the maximum amount of memory that the jvm will use
+     * @return the maximum amount of memory that the jvm will use
+     */
+    public long getTotalMemory() {
+        return Runtime.getRuntime().totalMemory();
+    }
+
+    /**
+     * Gets the used amount of memory from the jvm
+     * @return the used amount of memory from the jvm
+     */
+    public long getUsedMemory() {
+        return getTotalMemory() - getFreeMemory();
+    }
+
+    /**
+     * Gets the total amount of space from the server
+     * @return the total amount space from the server
+     */
+    public long getTotalSpace() {
+        return SERVER_FOLDER.getTotalSpace();
+    }
+
+    /**
+     * Gets the free amount of space from the server
+     * @return the free amount of space from the server
+     */
+    public long getFreeSpace() {
+        return SERVER_FOLDER.getFreeSpace();
+    }
+
+    /**
+     * Gets the used amount of space from the server
+     * @return the used amount of space from the server
+     */
+    public long getUsedSpace() {
+        return getTotalSpace() - getFreeSpace();
+    }
+
+    /**
+     * Gets the total amount of processors available to the server
+     * @return the total amount of processors available to the server
+     */
+    public long getAvailableProcessors() {
+        return Runtime.getRuntime().availableProcessors();
+    }
+
+}

src/main/java/de/gnmyt/mcdash/api/tasks/TPSRunnable.java

@@ -0,0 +1,47 @@
+package de.gnmyt.mcdash.api.tasks;
+
+public class TPSRunnable implements Runnable {
+
+    public int tick_count = 0;
+    public long[] ticks = new long[600];
+
+    /**
+     * Updates the tick variables
+     */
+    @Override
+    public void run() {
+        ticks[(tick_count % ticks.length)] = System.currentTimeMillis();
+        tick_count++;
+    }
+
+    /**
+     * Gets the current tps of the server
+     * @return the current tps of the server
+     */
+    public double getCurrentTPS() {
+        return getCurrentTPS(100);
+    }
+
+    /**
+     * Gets the current tps of the server
+     * @param ticks The amount of ticks
+     * @return the current tps of the server
+     */
+    public double getCurrentTPS(int ticks) {
+        if (tick_count< ticks) return 20.0D;
+
+        int target = (tick_count-ticks-1) % this.ticks.length;
+        long elapsed = System.currentTimeMillis() - this.ticks[target];
+
+        return ticks / (elapsed / 1000.0D);
+    }
+
+    /**
+     * Gets the tps of the server (rounded)
+     * @return the tps of the server (rounded)
+     */
+    public long getCurrentRoundedTPS() {
+        return Math.round(getCurrentTPS());
+    }
+
+}

src/main/java/de/gnmyt/mcdash/panel/routes/stats/StatsRoute.java

@@ -0,0 +1,24 @@
+package de.gnmyt.mcdash.panel.routes.stats;
+
+import de.gnmyt.mcdash.MinecraftDashboard;
+import de.gnmyt.mcdash.api.controller.StatsController;
+import de.gnmyt.mcdash.api.handler.DefaultHandler;
+import de.gnmyt.mcdash.api.http.Request;
+import de.gnmyt.mcdash.api.http.ResponseController;
+
+public class StatsRoute extends DefaultHandler {
+
+    private final StatsController STATS = new StatsController(MinecraftDashboard.getInstance());
+
+    /**
+     * Gets the current server statistics such as the tps, processors, memory and the space
+     * @param request The request object from the HttpExchange
+     * @param response The response controller from the HttpExchange
+     */
+    @Override
+    public void get(Request request, ResponseController response) {
+        response.json("tps="+STATS.getTPS(), "processors="+STATS.getAvailableProcessors(),
+                "free_memory="+STATS.getFreeMemory(), "total_memory="+STATS.getTotalMemory(), "used_memory="+STATS.getUsedMemory(),
+                "free_space="+STATS.getFreeSpace(), "total_space="+STATS.getTotalSpace(), "used_space="+STATS.getUsedSpace());
+    }
+}

src/main/resources/plugin.yml

@@ -1,5 +1,5 @@
 name: MinecraftDashboard
 main: de.gnmyt.mcdash.MinecraftDashboard
-version: 1.0-SNAPSHOT
+version: 1.4
 description: This is the official plugin (wrapper) for MCDash, a free and open-source minecraft dashboard.
 author: GNMYT