1 files changed, 0 insertions, 139 deletions
diff --git a/libs/minidns/src/main/java/de/measite/minidns/LRUCache.java b/libs/minidns/src/main/java/de/measite/minidns/LRUCache.java
deleted file mode 100644
index 6b9bbdc1..00000000
--- a/libs/minidns/src/main/java/de/measite/minidns/LRUCache.java
+++ /dev/null
@@ -1,139 +0,0 @@
-package de.measite.minidns;
-
-import java.util.LinkedHashMap;
-import java.util.Map.Entry;
-
-/**
- * LRU based DNSCache backed by a LinkedHashMap.
- */
-public class LRUCache implements DNSCache {
-
-    /**
-     * Internal miss count.
-     */
-    protected long missCount = 0l;
-
-    /**
-     * Internal expire count (subset of misses that was caused by expire).
-     */
-    protected long expireCount = 0l;
-
-    /**
-     * Internal hit count.
-     */
-    protected long hitCount = 0l;
-
-    /**
-     * The internal capacity of the backend cache.
-     */
-    protected int capacity;
-
-    /**
-     * The upper bound of the ttl. All longer TTLs will be capped by this ttl.
-     */
-    protected long maxTTL;
-
-    /**
-     * The backend cache.
-     */
-    protected LinkedHashMap<Question, DNSMessage> backend;
-
-    /**
-     * Create a new LRUCache with given capacity and upper bound ttl.
-     * @param capacity The internal capacity.
-     * @param maxTTL The upper bound for any ttl.
-     */
-    @SuppressWarnings("serial")
-    public LRUCache(final int capacity, final long maxTTL) {
-        this.capacity = capacity;
-        this.maxTTL = maxTTL;
-        backend = new LinkedHashMap<Question,DNSMessage>(
-                Math.min(capacity + (capacity + 3) / 4 + 2, 11), 0.75f, true)
-            {
-                @Override
-                protected boolean removeEldestEntry(
-                        Entry<Question, DNSMessage> eldest) {
-                    return size() > capacity;
-                }
-            };
-    }
-
-    /**
-     * Create a new LRUCache with given capacity.
-     * @param capacity The capacity of this cache.
-     */
-    public LRUCache(final int capacity) {
-        this(capacity, Long.MAX_VALUE);
-    }
-
-    @Override
-    public synchronized void put(Question q, DNSMessage message) {
-        if (message.getReceiveTimestamp() <= 0l) {
-            return;
-        }
-        backend.put(q, message);
-    }
-
-    @Override
-    public synchronized DNSMessage get(Question q) {
-        DNSMessage message = backend.get(q);
-        if (message == null) {
-            missCount++;
-            return null;
-        }
-
-        long ttl = maxTTL;
-        for (Record r : message.getAnswers()) {
-            ttl = Math.min(ttl, r.ttl);
-        }
-        for (Record r : message.getAdditionalResourceRecords()) {
-            ttl = Math.min(ttl, r.ttl);
-        }
-        if (message.getReceiveTimestamp() + ttl > System.currentTimeMillis()) {
-            missCount++;
-            expireCount++;
-            backend.remove(q);
-            return null;
-        } else {
-            hitCount++;
-            return message;
-        }
-    }
-
-    /**
-     * Clear all entries in this cache.
-     */
-    public synchronized void clear() {
-        backend.clear();
-        missCount = 0l;
-        hitCount = 0l;
-        expireCount = 0l;
-    }
-
-    /**
-     * Get the miss count of this cache which is the number of fruitless
-     * get calls since this cache was last resetted.
-     * @return The number of cache misses.
-     */
-    public long getMissCount() {
-        return missCount;
-    }
-
-    /**
-     * The number of expires (cache hits that have had a ttl to low to be
-     * retrieved).
-     * @return The expire count.
-     */
-    public long getExpireCount() {
-        return expireCount;
-    }
-
-    /**
-     * The cache hit count (all sucessful calls to get).
-     * @return The hit count.
-     */
-    public long getHitCount() {
-        return hitCount;
-    }
-
-}