SPY-181: GetAndLock needs to be cloneable like any other keyed op.

Motivation
----------
In case a getAndLock operation needs to be rescheduled, it needs to
be cloneable (like any other keyed operation).

Modifications
-------------
Apply the same clone logic as with any other keyed operation. Also
added getter methods to the operations so that the expiration time
can be extracted on cloning.

Result
------
Correct behavior when a getAndLock op needs to be cloned.

Change-Id: I7f4fdad62af71a42cc203b2a4b7e72f2002a286d
Reviewed-on: http://review.couchbase.org/45129
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Reviewed-by: Simon Baslé <simon@couchbase.com>

Author: daschl

src/main/java/net/spy/memcached/ops/BaseOperationFactory.java

@@ -92,7 +92,11 @@ public Collection<Operation> clone(KeyedOperation op) {
     } else if(op instanceof GetAndTouchOperation) {
       GetAndTouchOperation gt = (GetAndTouchOperation) op;
       rv.add(getAndTouch(first(gt.getKeys()), gt.getExpiration(),
-        (GetAndTouchOperation.Callback) gt.getCallback()));
+          (GetAndTouchOperation.Callback) gt.getCallback()));
+    } else if (op instanceof GetlOperation) {
+      GetlOperation gl = (GetlOperation) op;
+      rv.add(getl(first(gl.getKeys()), gl.getExpiration(),
+          (GetlOperation.Callback) gl.getCallback()));
     } else if (op instanceof ObserveOperation) {
       ObserveOperation oo = (ObserveOperation) op;
       rv.add(observe(first(oo.getKeys()), oo.getCasValue(), oo.getIndex(),

src/main/java/net/spy/memcached/ops/GetlOperation.java

@@ -40,4 +40,7 @@ interface Callback extends OperationCallback {
      */
     void gotData(String key, int flags, long cas, byte[] data);
   }
+
+  int getExpiration();
+
 }

src/main/java/net/spy/memcached/protocol/ascii/GetlOperationImpl.java

@@ -31,7 +31,15 @@ class GetlOperationImpl extends BaseGetOpImpl implements GetlOperation {
 
   private static final String CMD = "getl";
 
+  private final int exp;
+
   public GetlOperationImpl(String key, int exp, GetlOperation.Callback c) {
     super(CMD, exp, c, key);
+    this.exp = exp;
+  }
+
+  @Override
+  public int getExpiration() {
+    return exp;
   }
 }

src/main/java/net/spy/memcached/protocol/binary/GetlOperationImpl.java

@@ -64,4 +64,10 @@ protected void decodePayload(byte[] pl) {
   public String toString() {
     return super.toString() + " Exp: " + exp;
   }
+
+  @Override
+  public int getExpiration() {
+    return exp;
+  }
+
 }