Add UnsignedLongRangeSet.toString()

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / OperationLimiter.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/OperationLimiter.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/OperationLimiter.java
index ad26d0a50b4d19dccc3afee4086ea6fb16c86726..3f0c98c47ff218bc105be34a8b9d2cab10ab8a88 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/OperationLimiter.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/OperationLimiter.java
@@ -7,21 +7,20 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
-import akka.dispatch.OnComplete;
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
 import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Preconditions;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
-import org.opendaylight.controller.cluster.datastore.messages.BatchedModificationsReply;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * Class for limiting operations. It extends {@link OnComplete}, so we can plug it seamlessly
- * into akka to release permits as futures complete.
+ * Class for limiting operations.
  */
-public class OperationLimiter extends OnComplete<Object> {
+public class OperationLimiter  {
     private static final Logger LOG = LoggerFactory.getLogger(OperationLimiter.class);
     private final TransactionIdentifier identifier;
     private final long acquireTimeout;
@@ -29,24 +28,24 @@ public class OperationLimiter extends OnComplete<Object> {
     private final int maxPermits;
 
     OperationLimiter(final TransactionIdentifier identifier, final int maxPermits, final long acquireTimeoutSeconds) {
-        this.identifier = Preconditions.checkNotNull(identifier);
+        this.identifier = requireNonNull(identifier);
 
-        Preconditions.checkArgument(acquireTimeoutSeconds >= 0);
+        checkArgument(acquireTimeoutSeconds >= 0);
         this.acquireTimeout = TimeUnit.SECONDS.toNanos(acquireTimeoutSeconds);
 
-        Preconditions.checkArgument(maxPermits >= 0);
+        checkArgument(maxPermits >= 0);
         this.maxPermits = maxPermits;
         this.semaphore = new Semaphore(maxPermits);
     }
 
-    void acquire() {
-        acquire(1);
+    boolean acquire() {
+        return acquire(1);
     }
 
-    void acquire(final int acquirePermits) {
+    boolean acquire(final int acquirePermits) {
         try {
-            if (!semaphore.tryAcquire(acquirePermits, acquireTimeout, TimeUnit.NANOSECONDS)) {
-                LOG.warn("Failed to acquire operation permit for transaction {}", identifier);
+            if (semaphore.tryAcquire(acquirePermits, acquireTimeout, TimeUnit.NANOSECONDS)) {
+                return true;
             }
         } catch (InterruptedException e) {
             if (LOG.isDebugEnabled()) {
@@ -55,30 +54,32 @@ public class OperationLimiter extends OnComplete<Object> {
                 LOG.warn("Interrupted when trying to acquire operation permit for transaction {}", identifier);
             }
         }
+
+        return false;
     }
 
-    @Override
-    public void onComplete(final Throwable throwable, final Object message) {
-        if (message instanceof BatchedModificationsReply) {
-            this.semaphore.release(((BatchedModificationsReply)message).getNumBatched());
-        } else {
-            this.semaphore.release();
-        }
+    void release() {
+        release(1);
     }
 
-    public TransactionIdentifier getIdentifier() {
+    void release(final int permits) {
+        this.semaphore.release(permits);
+    }
+
+    @VisibleForTesting
+    TransactionIdentifier getIdentifier() {
         return identifier;
     }
 
     @VisibleForTesting
-    int availablePermits(){
+    int availablePermits() {
         return semaphore.availablePermits();
     }
 
     /**
-     * Release all the permits
+     * Release all the permits.
      */
     public void releaseAll() {
-        this.semaphore.release(maxPermits-availablePermits());
+        this.semaphore.release(maxPermits - availablePermits());
     }
 }