first attempt at moving Batch deserialization out of the lock

Author: jsvd

logstash-core/src/main/java/org/logstash/ackedqueue/DeserializedBatch.java

@@ -0,0 +1,19 @@
+package org.logstash.ackedqueue;
+
+import java.util.List;
+
+public class DeserializedBatch {
+    private final List<byte[]> elements;
+    private final long firstSeqNum;
+    private final Queue queue;
+
+    public DeserializedBatch(List<byte[]> elements, long firstSeqNum, Queue queue) {
+        this.elements = elements;
+        this.firstSeqNum = firstSeqNum;
+        this.queue = queue;
+    }
+
+    public Batch deserialize() {
+        return new Batch(elements, firstSeqNum, queue);
+    }
+}