refs #200: Create accouting-lib library

https://support.d4science.org/issues/200
Implementing buffer strategy

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/accounting/accounting-lib@115720 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/accounting/datamodel/aggregation/scheduler/AggregationScheduler.java

@@ -111,6 +111,8 @@ public abstract class AggregationScheduler {
 			for(AggregationStrategy aggregationStrategy : aggregationStrategies){
 				try {
 					aggregationStrategy.aggregate((SingleUsageRecord) usageRecord);
+					found = true;
+					break;
 				} catch(NotAggregatableRecordsExceptions e) {
 					logger.trace("{} is not usable for aggregation", aggregationStrategy);
 				} 
@@ -155,16 +157,16 @@ public abstract class AggregationScheduler {
 		
 	}
 	
-	/**
-	 * Get an usage records and try to aggregate with other buffered
-	 * Usage Record.
-	 * @param usageRecord the Usage Record To Buffer
-	 * @return true if is time to persist the buffered Usage Record
-	 * @throws Exception if fails
-	 */
-	public synchronized void aggregate(SingleUsageRecord usageRecord, PersistenceExecutor persistenceExecutor) throws Exception {
+	public void flush(PersistenceExecutor persistenceExecutor) throws Exception{
+		aggregate(null, persistenceExecutor, true);
+	}
+	
+	protected synchronized void aggregate(SingleUsageRecord usageRecord, PersistenceExecutor persistenceExecutor, boolean forceFlush) throws Exception {
+		if(usageRecord!=null){
 			madeAggregation(usageRecord);
-		if(isTimeToPersist()){
+		}
+		
+		if(isTimeToPersist() || forceFlush){
 			UsageRecord[] recordToPersist = new UsageRecord[totalBufferedRecords];
 			int i = 0;
 			@SuppressWarnings("rawtypes")
@@ -186,7 +188,17 @@ public abstract class AggregationScheduler {
 			records.clear();
 			unaggregableRecords.clear();
 		}
+	}
 	
+	/**
+	 * Get an usage records and try to aggregate with other buffered
+	 * Usage Record.
+	 * @param usageRecord the Usage Record To Buffer
+	 * @return true if is time to persist the buffered Usage Record
+	 * @throws Exception if fails
+	 */
+	public void aggregate(SingleUsageRecord usageRecord, PersistenceExecutor persistenceExecutor) throws Exception {
+		aggregate(usageRecord, persistenceExecutor, false);
 	}
 	
 	

src/main/java/org/gcube/accounting/persistence/Persistence.java

@@ -207,6 +207,18 @@ public abstract class Persistence {
 		}
 	}
 	
+	public void flush() throws Exception {
+		aggregationScheduler.flush(new PersistenceExecutor(){
+
+			@Override
+			public void persist(UsageRecord... usageRecords) throws Exception {
+				persistence.accountWithFallback(usageRecords);	
+			}
+			
+		});
+	}
+	
+	
 	public abstract void close() throws Exception;
 	
 }

src/test/java/org/gcube/accounting/datamodel/persistence/PersistenceTest.java

@@ -44,6 +44,8 @@ public class PersistenceTest {
 		double average =  (duration/quantity);
 		logger.debug("Duration (in millisec) : " + duration);
 		logger.debug("Average (in millisec) : " + average);
+		
+		persistence.flush();
 	}
 	
 }