Fix FindBugs warnings in sal-distributed-datastore and enable enforcement

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / jmx / mbeans / shard / ShardStats.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shard/ShardStats.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shard/ShardStats.java
index 6e8ff146d4790f376fba19c33a8e0a474a4f3e86..e5af6ddc53f7cebfa9ad8c84e14261ce2814e5a1 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shard/ShardStats.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shard/ShardStats.java
@@ -21,6 +21,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
+import javax.annotation.Nullable;
 import org.opendaylight.controller.cluster.datastore.Shard;
 import org.opendaylight.controller.cluster.raft.base.messages.InitiateCaptureSnapshot;
 import org.opendaylight.controller.cluster.raft.client.messages.FollowerInfo;
@@ -35,7 +36,7 @@ import scala.concurrent.Await;
  * @author  Basheeruddin syedbahm@cisco.com
  */
 public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
-    public static String JMX_CATEGORY_SHARD = "Shards";
+    public static final String JMX_CATEGORY_SHARD = "Shards";
 
     private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
 
@@ -60,7 +61,7 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     private boolean followerInitialSyncStatus = false;
 
-    private Shard shard;
+    private final Shard shard;
 
     private String statRetrievalError;
 
@@ -70,11 +71,8 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     private long lastLeadershipChangeTime;
 
-    public ShardStats(final String shardName, final String mxBeanType) {
+    public ShardStats(final String shardName, final String mxBeanType, @Nullable final Shard shard) {
         super(shardName, mxBeanType, JMX_CATEGORY_SHARD);
-    }
-
-    public void setShard(Shard shard) {
         this.shard = shard;
     }
 
@@ -214,7 +212,9 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     @Override
     public String getLastCommittedTransactionTime() {
-        return DATE_FORMAT.format(new Date(lastCommittedTransactionTime));
+        synchronized (DATE_FORMAT) {
+            return DATE_FORMAT.format(new Date(lastCommittedTransactionTime));
+        }
     }
 
     @Override
@@ -344,17 +344,19 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     @Override
     public String getLastLeadershipChangeTime() {
-        return DATE_FORMAT.format(new Date(lastLeadershipChangeTime));
+        synchronized (DATE_FORMAT) {
+            return DATE_FORMAT.format(new Date(lastLeadershipChangeTime));
+        }
     }
 
     @Override
     public int getPendingTxCommitQueueSize() {
-        return shard.getPendingTxCommitQueueSize();
+        return shard != null ? shard.getPendingTxCommitQueueSize() : -1;
     }
 
     @Override
     public int getTxCohortCacheSize() {
-        return shard.getCohortCacheSize();
+        return shard != null ? shard.getCohortCacheSize() : -1;
     }
 
     @Override