Add more orderly storage shutdown

DynmapCore/src/main/java/org/dynmap/DynmapCore.java

@@ -1113,7 +1113,9 @@ public class DynmapCore implements DynmapCommonAPI {
             mapManager.stopRendering();
             mapManager = null;
         }
-
+        if (defaultStorage != null) {
+        	defaultStorage.shutdownStorage();
+        }
         playerfacemgr = null;
         /* Clean up registered listeners */
         listenerManager.cleanup();

DynmapCore/src/main/java/org/dynmap/storage/MapStorage.java

@@ -26,13 +26,18 @@ public abstract class MapStorage {
     private static HashMap<String, Integer> filelocks = new HashMap<String, Integer>();
     private static final Integer WRITELOCK = (-1);
     protected File baseStandaloneDir;
+    protected boolean isShutdown;
 
     protected long serverID;
     
     protected MapStorage() {
         this.serverID = 0;
+        this.isShutdown = false;
     }
     
+    public void shutdownStorage() {
+    	this.isShutdown = true;
+    }
     // Proper modulo - versus the bogus Java behavior of negative modulo for negative numerators
     protected static final int modulo(int x, int y) {
         return ((x % y) + y) % y;
@@ -475,6 +480,7 @@ public abstract class MapStorage {
     }
     
     public void logSQLException(String opmsg, SQLException x) {
+    	if (isShutdown) return;
     	Log.severe("SQLException: " + opmsg);
     	Log.severe("  ErrorCode: " + x.getErrorCode() + ", SQLState=" + x.getSQLState());
     	Log.severe("  Message: " + x.getMessage());
@@ -485,4 +491,11 @@ public abstract class MapStorage {
     		cause = cause.getCause();
     	}
     }
+    
+    public static class StorageShutdownException extends Exception {
+		private static final long serialVersionUID = 8961471920726795043L;
+
+		public StorageShutdownException() {}
+    }
+
 }

DynmapCore/src/main/java/org/dynmap/storage/aws_s3/AWSS3MapStorage.java

@@ -66,8 +66,9 @@ public class AWSS3MapStorage extends MapStorage {
         @Override
         public boolean exists() {
         	boolean exists = false;
-        	S3Client s3 = getConnection();
+        	S3Client s3 = null;
         	try {
+        		s3 = getConnection();
         		ListObjectsV2Request req = ListObjectsV2Request.builder().bucketName(bucketname).prefix(baseKey).maxKeys(1).build();
         	    ListObjectsV2Response rslt = s3.listObjectsV2(req);
         		if ((rslt != null) && (rslt.getKeyCount() > 0))
@@ -76,6 +77,8 @@ public class AWSS3MapStorage extends MapStorage {
             	if (!x.getCode().equals("SignatureDoesNotMatch")) {	// S3 behavior when no object match....
             		Log.severe("AWS Exception", x);
             	}
+            } catch (StorageShutdownException x) {
+            	
         	} finally {
         		releaseConnection(s3);
         	}
@@ -89,8 +92,9 @@ public class AWSS3MapStorage extends MapStorage {
 
         @Override
         public TileRead read() {
-        	S3Client s3 = getConnection();
+        	S3Client s3 = null;
         	try {
+        		s3 = getConnection();
         		GetObjectRequest req = GetObjectRequest.builder().bucketName(bucketname).key(baseKey).build();
     			ResponseBytes<GetObjectResponse> obj = s3.getObjectAsBytes(req);
     			if (obj != null) {
@@ -114,6 +118,7 @@ public class AWSS3MapStorage extends MapStorage {
         		return null;	// Nominal case if it doesn't exist
             } catch (S3Exception x) {
         		Log.severe("AWS Exception", x);
+            } catch (StorageShutdownException x) {
         	} finally {
         		releaseConnection(s3);
         	}
@@ -123,8 +128,9 @@ public class AWSS3MapStorage extends MapStorage {
         @Override
         public boolean write(long hash, BufferOutputStream encImage, long timestamp) {
         	boolean done = false;
-        	S3Client s3 = getConnection();
+        	S3Client s3 = null;
         	try {
+            	s3 = getConnection();
         		if (encImage == null) { // Delete?
         			DeleteObjectRequest req = DeleteObjectRequest.builder().bucketName(bucketname).key(baseKey).build();
         			s3.deleteObject(req);
@@ -137,6 +143,7 @@ public class AWSS3MapStorage extends MapStorage {
     			done = true;
             } catch (S3Exception x) {
             	Log.severe("AWS Exception", x);
+            } catch (StorageShutdownException x) {
         	} finally {
         		releaseConnection(s3);
         	}
@@ -249,12 +256,13 @@ public class AWSS3MapStorage extends MapStorage {
         }
         // Now creste the access client for the S3 service
         Log.info("Using AWS S3 storage: web site at S3 bucket " + bucketname + " in region " + region);
-        S3Client s3 = getConnection();
+        S3Client s3 = null;
-        if (s3 == null) {
-        	Log.severe("Error creating S3 access client");      
-        	return false;
-        }
         try {
+            s3 = getConnection();
+            if (s3 == null) {
+            	Log.severe("Error creating S3 access client");      
+            	return false;
+            }
 	        // Make sure bucket exists (do list)
 	        ListObjectsV2Request listreq = ListObjectsV2Request.builder()
 	        		.bucketName(bucketname)
@@ -270,6 +278,8 @@ public class AWSS3MapStorage extends MapStorage {
         } catch (S3Exception s3x) {
     		Log.severe("AWS Exception", s3x);
     		return false;
+        } catch (StorageShutdownException x) {
+    		return false;
         } finally {
     		releaseConnection(s3);
         }
@@ -334,8 +344,9 @@ public class AWSS3MapStorage extends MapStorage {
     	String basekey = prefix + "tiles/" + world.getName() + "/" + map.getPrefix() + var.variantSuffix + "/";
     	ListObjectsV2Request req = ListObjectsV2Request.builder().bucketName(bucketname).prefix(basekey).maxKeys(1000).build();
     	boolean done = false;
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
         	while (!done) {
         		ListObjectsV2Response result = s3.listObjectsV2(req);
         		List<S3Object> objects = result.getContents();
@@ -395,6 +406,7 @@ public class AWSS3MapStorage extends MapStorage {
 	        	Log.severe("AWS Exception", x);
 	        	Log.severe("req=" + req);
         	}
+        } catch (StorageShutdownException x) {
         } finally {
     		releaseConnection(s3);
         }
@@ -442,8 +454,9 @@ public class AWSS3MapStorage extends MapStorage {
     private void processPurgeMapTiles(DynmapWorld world, MapType map, ImageVariant var) {
     	String basekey = prefix + "tiles/" + world.getName() + "/" + map.getPrefix() + var.variantSuffix + "/";
 		ListObjectsV2Request req = ListObjectsV2Request.builder().bucketName(bucketname).prefix(basekey).delimiter("").maxKeys(1000).encodingType("url").requestPayer("requester").build();
-		S3Client s3 = getConnection();
+		S3Client s3 = null;
     	try {
+    		s3 = getConnection();
     		boolean done = false;
     		while (!done) {
 	    		ListObjectsV2Response result = s3.listObjectsV2(req);
@@ -466,6 +479,7 @@ public class AWSS3MapStorage extends MapStorage {
 	        	Log.severe("AWS Exception", x);
 	        	Log.severe("req=" + req);
         	}
+        } catch (StorageShutdownException x) {
         } finally {
     		releaseConnection(s3);
         }
@@ -494,8 +508,9 @@ public class AWSS3MapStorage extends MapStorage {
             BufferOutputStream encImage) {
     	boolean done = false;
     	String baseKey = prefix + "tiles/faces/" + facetype.id + "/" + playername + ".png";
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
     		if (encImage == null) { // Delete?
 				DeleteObjectRequest delreq = DeleteObjectRequest.builder().bucketName(bucketname).key(baseKey).build();
 			    s3.deleteObject(delreq);
@@ -507,6 +522,7 @@ public class AWSS3MapStorage extends MapStorage {
 			done = true;
         } catch (S3Exception x) {
         	Log.severe("AWS Exception", x);
+        } catch (StorageShutdownException x) {
     	} finally {
     		releaseConnection(s3);
     	}
@@ -523,8 +539,9 @@ public class AWSS3MapStorage extends MapStorage {
     public boolean hasPlayerFaceImage(String playername, FaceType facetype) {
     	String baseKey = prefix + "tiles/faces/" + facetype.id + "/" + playername + ".png";
     	boolean exists = false;
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
     		ListObjectsV2Request req = ListObjectsV2Request.builder().bucketName(bucketname).prefix(baseKey).maxKeys(1).build();
     	    ListObjectsV2Response rslt = s3.listObjectsV2(req);
     		if ((rslt != null) && (rslt.getKeyCount() > 0))
@@ -533,6 +550,7 @@ public class AWSS3MapStorage extends MapStorage {
         	if (!x.getCode().equals("SignatureDoesNotMatch")) {	// S3 behavior when no object match....
         		Log.severe("AWS Exception", x);
         	}
+        } catch (StorageShutdownException x) {
     	} finally {
     		releaseConnection(s3);
     	}
@@ -543,8 +561,9 @@ public class AWSS3MapStorage extends MapStorage {
     public boolean setMarkerImage(String markerid, BufferOutputStream encImage) {
     	boolean done = false;
     	String baseKey = prefix + "tiles/_markers_/" + markerid + ".png";
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
     		if (encImage == null) { // Delete?
 				DeleteObjectRequest delreq = DeleteObjectRequest.builder().bucketName(bucketname).key(baseKey).build();
 			    s3.deleteObject(delreq);
@@ -556,6 +575,7 @@ public class AWSS3MapStorage extends MapStorage {
 			done = true;
         } catch (S3Exception x) {
         	Log.severe("AWS Exception", x);
+        } catch (StorageShutdownException x) {
     	} finally {
     		releaseConnection(s3);
     	}
@@ -571,8 +591,9 @@ public class AWSS3MapStorage extends MapStorage {
     public boolean setMarkerFile(String world, String content) {
     	boolean done = false;
     	String baseKey = prefix + "tiles/_markers_/marker_" + world + ".json";
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
     		if (content == null) { // Delete?
 				DeleteObjectRequest delreq = DeleteObjectRequest.builder().bucketName(bucketname).key(baseKey).build();
 			    s3.deleteObject(delreq);
@@ -584,6 +605,7 @@ public class AWSS3MapStorage extends MapStorage {
 			done = true;
         } catch (S3Exception x) {
         	Log.severe("AWS Exception", x);
+        } catch (StorageShutdownException x) {
     	} finally {
     		releaseConnection(s3);
     	}
@@ -668,8 +690,9 @@ public class AWSS3MapStorage extends MapStorage {
     	
     	boolean done = false;
     	String baseKey = prefix + fileid;
-    	S3Client s3 = getConnection();
+    	S3Client s3 = null;
     	try {
+        	s3 = getConnection();
     		byte[] cacheval = standalone_cache.get(fileid);
     		
     		if (content == null) { // Delete?
@@ -716,14 +739,16 @@ public class AWSS3MapStorage extends MapStorage {
 			done = true;
         } catch (S3Exception x) {
         	Log.severe("AWS Exception", x);
+        } catch (StorageShutdownException x) {
     	} finally {
     		releaseConnection(s3);
     	}
         return done;
     }
 
-    private S3Client getConnection() throws S3Exception {
+    private S3Client getConnection() throws S3Exception, StorageShutdownException {
         S3Client c = null;
+        if (isShutdown) throw new StorageShutdownException();
         synchronized (cpool) {
             while (c == null) {
                 for (int i = 0; i < cpool.length; i++) {    // See if available connection

DynmapCore/src/main/java/org/dynmap/storage/mysql/MySQLMapStorage.java

@@ -85,6 +85,8 @@ public class MySQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile exists error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -110,6 +112,8 @@ public class MySQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile matches hash error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -140,6 +144,8 @@ public class MySQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile read error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -196,6 +202,8 @@ public class MySQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile write error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -382,6 +390,8 @@ public class MySQLMapStorage extends MapStorage {
             stmt.close();
         } catch (SQLException x) {
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (c != null) { releaseConnection(c, err); }
         }
@@ -421,6 +431,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Error loading map table", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
             c = null;
@@ -460,6 +472,8 @@ public class MySQLMapStorage extends MapStorage {
                 } catch (SQLException x) {
                 	logSQLException("Error updating Maps table", x);
                     err = true;
+                } catch (StorageShutdownException x) {
+                	err = true;
                 } finally {
                     releaseConnection(c, err);
                 }
@@ -492,6 +506,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error creating tables", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -509,6 +526,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=2", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -527,6 +547,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=3", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -545,6 +568,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=4", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -579,6 +605,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=5", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -595,6 +624,9 @@ public class MySQLMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=5", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -607,8 +639,9 @@ public class MySQLMapStorage extends MapStorage {
         return true;
     }
         
-    private Connection getConnection() throws SQLException {
+    private Connection getConnection() throws SQLException, StorageShutdownException {
         Connection c = null;
+        if (isShutdown) { throw new StorageShutdownException(); }
         synchronized (cpool) {
             while (c == null) {
                 for (int i = 0; i < cpool.length; i++) {    // See if available connection
@@ -778,6 +811,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile enum error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -816,6 +851,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile purge error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -855,6 +892,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -882,6 +921,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face reqd error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -907,6 +948,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face exists error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -954,6 +997,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -981,6 +1026,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -1027,6 +1074,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -1054,6 +1103,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -1110,6 +1161,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Standalone file read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -1160,6 +1213,8 @@ public class MySQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Standalone file write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }

DynmapCore/src/main/java/org/dynmap/storage/postgresql/PostgreSQLMapStorage.java

@@ -87,6 +87,8 @@ public class PostgreSQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile exists error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -112,6 +114,8 @@ public class PostgreSQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile matches hash error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -141,6 +145,8 @@ public class PostgreSQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile read error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -197,6 +203,8 @@ public class PostgreSQLMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile write error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -366,6 +374,8 @@ public class PostgreSQLMapStorage extends MapStorage {
             stmt.close();
         } catch (SQLException x) {
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (c != null) { releaseConnection(c, err); }
         }
@@ -403,6 +413,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Error loading map table", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
             c = null;
@@ -442,6 +454,8 @@ public class PostgreSQLMapStorage extends MapStorage {
                 } catch (SQLException x) {
                 	logSQLException("Error updating Maps table", x);
                     err = true;
+                } catch (StorageShutdownException x) {
+                	err = true;
                 } finally {
                     releaseConnection(c, err);
                 }
@@ -474,6 +488,9 @@ public class PostgreSQLMapStorage extends MapStorage {
             	logSQLException("Error creating tables", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -491,6 +508,9 @@ public class PostgreSQLMapStorage extends MapStorage {
             	logSQLException("Error upgrading tables to version=2", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -509,6 +529,9 @@ public class PostgreSQLMapStorage extends MapStorage {
             	logSQLException("Error upgrading tables to version=3", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -525,6 +548,9 @@ public class PostgreSQLMapStorage extends MapStorage {
             	logSQLException("Error upgrading tables to version=4", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -537,8 +563,9 @@ public class PostgreSQLMapStorage extends MapStorage {
         return true;
     }
 
-    private Connection getConnection() throws SQLException {
+    private Connection getConnection() throws SQLException, StorageShutdownException {
         Connection c = null;
+        if (isShutdown) throw new StorageShutdownException();
         synchronized (cpool) {
             while (c == null) {
                 for (int i = 0; i < cpool.length; i++) {    // See if available connection
@@ -690,6 +717,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile enum error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -744,6 +773,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile purge error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -783,6 +814,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -810,6 +843,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -835,6 +870,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face exists error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -882,6 +919,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -909,6 +948,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -955,6 +996,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -982,6 +1025,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -1038,6 +1083,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Standalone file read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -1088,6 +1135,8 @@ public class PostgreSQLMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Standalone file write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }

DynmapCore/src/main/java/org/dynmap/storage/sqllte/SQLiteMapStorage.java

@@ -70,6 +70,8 @@ public class SQLiteMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile exists error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -96,6 +98,8 @@ public class SQLiteMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile matches hash error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -132,6 +136,8 @@ public class SQLiteMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile read error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -191,6 +197,8 @@ public class SQLiteMapStorage extends MapStorage {
             } catch (SQLException x) {
             	logSQLException("Tile write error", x);
                 err = true;
+            } catch (StorageShutdownException x) {
+            	err = true;
             } finally {
                 releaseConnection(c, err);
             }
@@ -269,6 +277,7 @@ public class SQLiteMapStorage extends MapStorage {
     @Override
     public boolean init(DynmapCore core) {
         if (!super.init(core)) {
+        	isShutdown = true;
             return false;
         }
         File dbfile = core.getFile(core.configuration.getString("storage/dbfile", "dynmap.db"));
@@ -281,6 +290,7 @@ public class SQLiteMapStorage extends MapStorage {
             return initializeTables();
         } catch (ClassNotFoundException cnfx) {
             Log.severe("SQLite-JDBC classes not found - sqlite data source not usable");
+        	isShutdown = true;
             return false; 
         }
     }
@@ -301,6 +311,8 @@ public class SQLiteMapStorage extends MapStorage {
             stmt.close();
         } catch (SQLException x) {
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (c != null) { releaseConnection(c, err); }
         }
@@ -339,6 +351,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Error loading map table", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
             c = null;
@@ -378,6 +392,8 @@ public class SQLiteMapStorage extends MapStorage {
                 } catch (SQLException x) {
                 	logSQLException("Error updating Maps table", x);
                     err = true;
+                } catch (StorageShutdownException x) {
+                	err = true;
                 } finally {
                     releaseConnection(c, err);
                 }
@@ -410,6 +426,9 @@ public class SQLiteMapStorage extends MapStorage {
             	logSQLException("Error creating tables", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+                return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -428,6 +447,9 @@ public class SQLiteMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=2", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+                return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -445,6 +467,9 @@ public class SQLiteMapStorage extends MapStorage {
             	logSQLException("Error updating tables to version=3", x);
                 err = true;
                 return false;
+            } catch (StorageShutdownException x) {
+            	err = true;
+            	return false;
             } finally {
                 releaseConnection(c, err);
                 c = null;
@@ -457,8 +482,11 @@ public class SQLiteMapStorage extends MapStorage {
         return true;
     }
     
-    private Connection getConnection() throws SQLException {
+    private Connection getConnection() throws SQLException, StorageShutdownException {
         Connection c = null;
+        if (isShutdown) {
+        	throw new StorageShutdownException();
+        }
         synchronized (cpool) {
             while (c == null) {
                 for (int i = 0; i < cpool.length; i++) {    // See if available connection
@@ -633,6 +661,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile enum error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -670,6 +700,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Tile purge error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -712,6 +744,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -746,6 +780,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -772,6 +808,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Face exists error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -823,6 +861,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -857,6 +897,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }
@@ -904,6 +946,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file write error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             if (rs != null) { try { rs.close(); } catch (SQLException sx) {} }
             if (stmt != null) { try { stmt.close(); } catch (SQLException sx) {} }
@@ -932,6 +976,8 @@ public class SQLiteMapStorage extends MapStorage {
         } catch (SQLException x) {
         	logSQLException("Marker file read error", x);
             err = true;
+        } catch (StorageShutdownException x) {
+        	err = true;
         } finally {
             releaseConnection(c, err);
         }