2 files changed, 20 insertions, 4 deletions
diff --git a/src/main/java/com/keuin/blame/Blame.java b/src/main/java/com/keuin/blame/Blame.java
index f620f73..744d920 100644
--- a/src/main/java/com/keuin/blame/Blame.java
+++ b/src/main/java/com/keuin/blame/Blame.java
@@ -18,6 +18,8 @@ import net.fabricmc.fabric.api.event.player.*;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.CommandManager;
 import net.minecraft.server.command.ServerCommandSource;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -55,7 +57,9 @@ public class Blame implements ModInitializer {
 
     private static void disableMongoSpamming() {
         Logger mongoLogger = Logger.getLogger("org.mongodb.driver");
-        mongoLogger.setLevel(Level.WARNING);
+        mongoLogger.setLevel(Level.SEVERE);
+        ((LoggerContext) LoggerFactory.getILoggerFactory()).getLogger("org.mongodb.driver")
+                .setLevel(org.apache.logging.log4j.Level.ERROR);
     }
 
     private static void upgradeOldLogEntries() {
@@ -66,11 +70,19 @@ public class Blame implements ModInitializer {
 //            final MongoCollection<LogEntry> collection = db.getCollection(
 //                    DatabaseUtil.MONGO_CONFIG.getLogCollectionName(), LogEntry.class
 //            );
+//            collection.updateMany()
 //            FindIterable<LogEntry> iterable =
-//                    collection.find(Filters.ne(LogEntryNames.VERSION, TransformerManager.LATEST_VERSION));
-//            List<LogEntry>
+//                    collection.find(Filters.ne(LogEntryNames.VERSION, TransformerManager.LATEST_VERSION))
+//                    .showRecordId(true);
 //            for (LogEntry logEntry : iterable) {
-//                iterable.batchSize(100).
+//                if (logEntry.version > TransformerManager.LATEST_VERSION) {
+//                    logger.warning("Detected a newer entry in the database! " +
+//                            "Downgrading of Blame is not supported and may cause " +
+//                            "unexpected behaviour.");
+//                    continue;
+//                }
+//
+//                collection.updateOne(iterable.showRecordId())
 //            }
 //
 //        }
diff --git a/src/main/java/com/keuin/blame/data/transformer/TransformerManager.java b/src/main/java/com/keuin/blame/data/transformer/TransformerManager.java
index e4db239..645c990 100644
--- a/src/main/java/com/keuin/blame/data/transformer/TransformerManager.java
+++ b/src/main/java/com/keuin/blame/data/transformer/TransformerManager.java
@@ -4,6 +4,7 @@ import com.keuin.blame.data.entry.LogEntry;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 
 public class TransformerManager {
 
@@ -20,6 +21,9 @@ public class TransformerManager {
     }
 
     public static Object transformTo(int targetVersion, LogEntry baseEntry) {
+        Objects.requireNonNull(baseEntry);
+        if (baseEntry.version > targetVersion)
+            throw new RuntimeException("Downgrade is not supported.");
         LogEntry entry = baseEntry;
         for (int currentVersion = baseEntry.version; currentVersion != targetVersion; ++currentVersion)
             entry = transformerMap.get(currentVersion + 1).transform(entry);