Speed up DatastoreContextIntrospector a bit

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DatastoreSnapshotRestore.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DatastoreSnapshotRestore.java
index e29de0f13f976840b0f90f1cb540bda08351eb76..995401c82c681d9e184c22ee3b45277963da0ed0 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DatastoreSnapshotRestore.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DatastoreSnapshotRestore.java
@@ -7,7 +7,8 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
@@ -27,7 +28,7 @@ import org.slf4j.LoggerFactory;
  *
  * @author Thomas Pantelis
  */
-public class DatastoreSnapshotRestore {
+public final class DatastoreSnapshotRestore {
     private static final Logger LOG = LoggerFactory.getLogger(DatastoreSnapshotRestore.class);
 
     private static AtomicReference<DatastoreSnapshotRestore> instance = new AtomicReference<>();
@@ -35,13 +36,13 @@ public class DatastoreSnapshotRestore {
     private final String restoreDirectoryPath;
     private final Map<String, DatastoreSnapshot> datastoreSnapshots = new ConcurrentHashMap<>();
 
-    public static DatastoreSnapshotRestore instance(String restoreDirectoryPath) {
+    public static DatastoreSnapshotRestore instance(final String restoreDirectoryPath) {
         instance.compareAndSet(null, new DatastoreSnapshotRestore(restoreDirectoryPath));
         return instance.get();
     }
 
-    private DatastoreSnapshotRestore(String restoreDirectoryPath) {
-        this.restoreDirectoryPath = Preconditions.checkNotNull(restoreDirectoryPath);
+    private DatastoreSnapshotRestore(final String restoreDirectoryPath) {
+        this.restoreDirectoryPath = requireNonNull(restoreDirectoryPath);
     }
 
     // synchronize this method so that, in case of concurrent access to getAndRemove(),
@@ -84,14 +85,14 @@ public class DatastoreSnapshotRestore {
         }
     }
 
-    private static DatastoreSnapshotList deserialize(InputStream inputStream)
+    private static DatastoreSnapshotList deserialize(final InputStream inputStream)
             throws IOException, ClassNotFoundException {
         try (ObjectInputStream ois = new ObjectInputStream(inputStream)) {
             return (DatastoreSnapshotList) ois.readObject();
         }
     }
 
-    public DatastoreSnapshot getAndRemove(String datastoreType) {
+    public DatastoreSnapshot getAndRemove(final String datastoreType) {
         initialize();
         return datastoreSnapshots.remove(datastoreType);
     }