Relinquish locks for each transaction

Change-Id: I44c10c0cc7857cfb647386507218a4e608b24687
Issue-ID: MUSIC-399
Signed-off-by: Tschaen, Brendan <ctschaen@att.com>

4 files changed, 23 insertions, 6 deletions

diff --git a/mdbc-server/src/main/java/org/onap/music/mdbc/MdbcConnection.java b/mdbc-server/src/main/java/org/onap/music/mdbc/MdbcConnection.java
index 0189f48..3cbd1e0 100755
--- a/mdbc-server/src/main/java/org/onap/music/mdbc/MdbcConnection.java
+++ b/mdbc-server/src/main/java/org/onap/music/mdbc/MdbcConnection.java
@@ -218,8 +218,9 @@ public class MdbcConnection implements Connection {
 
         //\TODO try to execute outside of the critical path of commit
         try {
-            if(partition != null)
-                relinquishIfRequired(partition);
+            if(partition != null) {
+                mi.relinquish(partition);
+            }
         } catch (MDBCServiceException e) {
             logger.warn("Error trying to relinquish: "+partition.toString());
         }
@@ -256,7 +257,7 @@ public class MdbcConnection implements Connection {
             logger.debug("Connection was closed for id:" + id);
         }
         try {
-            mi.relinquish(partition.getLockId(),partition.getMRIIndex().toString());
+            mi.relinquish(partition);
         } catch (MDBCServiceException e) {
             throw new SQLException("Failure during relinquish of partition",e);
         }
diff --git a/mdbc-server/src/main/java/org/onap/music/mdbc/StateManager.java b/mdbc-server/src/main/java/org/onap/music/mdbc/StateManager.java
index 4ee60bf..e284103 100644
--- a/mdbc-server/src/main/java/org/onap/music/mdbc/StateManager.java
+++ b/mdbc-server/src/main/java/org/onap/music/mdbc/StateManager.java
@@ -389,7 +389,7 @@ public class StateManager {
 
 	private void relinquish(DatabasePartition partition){
         try {
-            musicInterface.relinquish(partition.getLockId(),partition.getMRIIndex().toString());
+            musicInterface.relinquish(partition);
         } catch (MDBCServiceException e) {
             logger.error("Relinquish failed, would need to forcefully obtain lock later");
         }
diff --git a/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicInterface.java b/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicInterface.java
index 67ee5ab..62259a8 100755
--- a/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicInterface.java
+++ b/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicInterface.java
@@ -276,6 +276,13 @@ public interface MusicInterface {
 
 	/**
      * This functions relinquishes a range
+     * @param partition db partition to be relinquished
+     * @throws MusicLockingException
+     */
+	public void relinquish(DatabasePartition partition) throws MDBCServiceException;
+	
+	/**
+     * This functions relinquishes a range
      * @param lockId id of the lock to be relinquished
      * @param rangeId id of the range to be relinquished
      * @throws MusicLockingException
diff --git a/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicMixin.java b/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicMixin.java
index 67d30ff..6939d78 100644
--- a/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicMixin.java
+++ b/mdbc-server/src/main/java/org/onap/music/mdbc/mixins/MusicMixin.java
@@ -2191,6 +2191,15 @@ public class MusicMixin implements MusicInterface {
     }
 
 
+    @Override
+    public void relinquish(DatabasePartition partition) throws MDBCServiceException {
+        String ownerId = partition.getLockId();
+        String rangeId = partition.getMRIIndex().toString();
+        if(ownerId==null||ownerId.isEmpty()||rangeId==null||rangeId.isEmpty()){
+            return;
+        }
+        unlockKeyInMusic(musicRangeInformationTableName, rangeId, ownerId);
+    }
 
     @Override
     public void relinquish(String lockId, String rangeId) throws MDBCServiceException{
@@ -2207,7 +2216,7 @@ public class MusicMixin implements MusicInterface {
     private boolean canTryRelinquishing(){
         //\TODO: Fix this!!!! REALLY IMPORTANT TO BE FIX
         // This should actually have some mechanism to relinquish ownership
-        return false;
+        return true;
     }
 
     @Override
@@ -2226,7 +2235,7 @@ public class MusicMixin implements MusicInterface {
         if(lockQueueSize> 1){
             //If there is any other node waiting, we just relinquish ownership
             try {
-                relinquish(partition.getLockId(),partition.getMRIIndex().toString());
+                relinquish(partition);
             } catch (MDBCServiceException e) {
                 logger.error("Error relinquishing lock, will use timeout to solve");
             }