removed close method for mongo client. Now the connection pool is

managed by java driver, upgrade mongo-java-driver to 3.12. Deprecated
getUrl method

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## [v3.1.0-SNAPSHOT]
   * upgrade mongo-java-client to version 3.12.0
+  * removed close method for mongo client. Now the connection pool is managed by java driver
+  * deprecated getUrl method
 
 
 ## [v3.0.1-SNAPSHOT]

pom.xml

@@ -8,7 +8,7 @@
 	</parent>
   <groupId>org.gcube.contentmanagement</groupId>
   <artifactId>storage-manager-core</artifactId>
-  <version>3.0.1-SNAPSHOT</version>
+  <version>3.1.0-SNAPSHOT</version>
   <scm>
 		<connection>scm:git:https://code-repo.d4science.org/gCubeSystem/${project.artifactId}.git</connection>
 		<developerConnection>scm:git:https://code-repo.d4science.org/gCubeSystem/${project.artifactId}.git</developerConnection>

src/main/java/org/gcube/contentmanagement/blobstorage/service/IClient.java

@@ -96,6 +96,7 @@ public RemoteResourceInfo renewTTL(String key);
  * 
  * @return RemoteResource object
  */
+@Deprecated
 RemoteResource getUrl();
 
 /**

src/main/java/org/gcube/contentmanagement/blobstorage/transport/backend/MongoIOManager.java

@@ -779,6 +779,9 @@ public class MongoIOManager {
 	}
 	
 	public BasicDBObject findMetaCollectionObject(String source) throws UnknownHostException {
+//set to null in order to perform a query as BasicDBObject and not GridFSObject		
+		db=null;
+		mongo=null;
 		DBCollection fileCollection=getConnectionDB(dbName, false).getCollection(Costants.DEFAULT_META_COLLECTION);
 		BasicDBObject query = new BasicDBObject();
 		BasicDBObject obj=null;
@@ -1048,11 +1051,11 @@ public class MongoIOManager {
 	 * the old close method
 	 */
 	protected void clean() {
-		if(mongo!=null)
-			mongo.close();
-		mongo=null;
-		if(db!=null)
-			db=null;
+//		if(mongo!=null)
+//			mongo.close();
+//		mongo=null;
+//		if(db!=null)
+//			db=null;
 	}
 	
 	/**
@@ -1062,12 +1065,12 @@ public class MongoIOManager {
 	 */
 	
 	public void close() {
-		if(mongo!=null)
-			mongo.close();
-		logger.info("Mongo has been closed");
-		mongo=null;
-		gfs=null;
-		db=null;
+//		if(mongo!=null)
+//			mongo.close();
+//		logger.info("Mongo has been closed");
+//		mongo=null;
+//		gfs=null;
+//		db=null;
 	}
 	
 	public void removeGFSFile(GridFSDBFile f, ObjectId idF){

src/main/java/org/gcube/contentmanagement/blobstorage/transport/backend/util/MongoInputStream.java

@@ -31,8 +31,8 @@ public class MongoInputStream extends ProxyInputStream{
 			} catch (IOException e) {
 				e.printStackTrace();
 			}
-			if (mongo!=null)
-				mongo.close();
+//			if (mongo!=null)
+//				mongo.close();
 			setClosed(true);
 		}
 	}

src/main/java/org/gcube/contentmanagement/blobstorage/transport/backend/util/MongoOutputStream.java

@@ -66,8 +66,8 @@ public class MongoOutputStream extends ProxyOutputStream {
 				// TODO Auto-generated catch block
 				e.printStackTrace();
 			}
-			mongo.close();
-			setClosed(true);
+//			mongo.close();
+//			setClosed(true);
 		}
     }