added files.

src/main/java/it/ytnoos/lpx/api/check/IntervalCounter.java

@@ -0,0 +1,74 @@
+package it.ytnoos.lpx.api.check;
+
+public class IntervalCounter {
+
+    protected final long maxCounter;
+
+    protected final long interval;
+
+    protected double counter;
+
+    protected long startTime = System.currentTimeMillis();
+
+    protected long lastFlag = 0L;
+
+    public IntervalCounter(long maxCounter) {
+        this.maxCounter = maxCounter;
+        this.interval = 1000L;
+    }
+
+    public IntervalCounter(long maxCounter, long interval) {
+        this.maxCounter = maxCounter;
+        this.interval = interval;
+    }
+
+    public boolean increment() {
+        return this.increment(1.0);
+    }
+
+    public boolean increment(double counter) {
+        if (this.maxCounter < 0L) {
+            return false;
+        }
+        if (System.currentTimeMillis() - this.startTime >= this.interval) {
+            this.reset();
+        }
+        this.counter += counter;
+        if (this.counter > this.maxCounter) {
+            this.lastFlag = System.currentTimeMillis();
+            this.reset();
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    protected void reset() {
+        this.counter = 0.0;
+        this.startTime = System.currentTimeMillis();
+    }
+
+    public long getInterval() {
+        return this.interval;
+    }
+
+    public double getValue() {
+        return this.counter;
+    }
+
+    public long getMaxCounter() {
+        return this.maxCounter;
+    }
+
+    public long getStartTime() {
+        return this.startTime;
+    }
+
+    public boolean hasFlaggedRecently() {
+        return this.hasFlaggedRecently(this.interval);
+    }
+
+    public boolean hasFlaggedRecently(long value) {
+        return System.currentTimeMillis() - this.lastFlag < value;
+    }
+}