Use @Singleton instead of @ApplicationScoped in hot paths

Definitely a microoptimization but noticeable on the flamegraph

dhfs-parent/objects/src/main/java/com/usatiuk/objects/transaction/CurrentTransaction.java

@@ -6,10 +6,11 @@ import com.usatiuk.objects.iterators.CloseableKvIterator;
 import com.usatiuk.objects.iterators.IteratorStart;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
 import java.util.Optional;
 
-@ApplicationScoped
+@Singleton
 public class CurrentTransaction implements Transaction {
     @Inject
     TransactionManager transactionManager;

dhfs-parent/objects/src/main/java/com/usatiuk/objects/transaction/TransactionManagerImpl.java

@@ -3,11 +3,12 @@ package com.usatiuk.objects.transaction;
 import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 import org.apache.commons.lang3.tuple.Pair;
 
 import java.util.Collection;
 
-@ApplicationScoped
+@Singleton
 public class TransactionManagerImpl implements TransactionManager {
     private static final ThreadLocal<TransactionPrivate> _currentTransaction = new ThreadLocal<>();
     @Inject

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/DeleterTxHook.java

@@ -7,8 +7,9 @@ import com.usatiuk.objects.transaction.Transaction;
 import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class DeleterTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/RefcounterTxHook.java

@@ -7,8 +7,9 @@ import com.usatiuk.objects.transaction.Transaction;
 import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class RefcounterTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/RemoteObjPusherTxHook.java

@@ -8,8 +8,9 @@ import com.usatiuk.objects.transaction.PreCommitTxHook;
 import com.usatiuk.objects.transaction.Transaction;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class RemoteObjPusherTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/jmap/JMapHolderRefcounterTxHook.java

@@ -9,8 +9,9 @@ import com.usatiuk.objects.transaction.PreCommitTxHook;
 import com.usatiuk.objects.transaction.Transaction;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class JMapHolderRefcounterTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/jmap/JMapRefcounterTxHook.java

@@ -9,8 +9,9 @@ import com.usatiuk.objects.transaction.Transaction;
 import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class JMapRefcounterTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/repository/AutosyncTxHook.java

@@ -8,9 +8,10 @@ import com.usatiuk.objects.transaction.PreCommitTxHook;
 import com.usatiuk.objects.transaction.Transaction;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 import org.eclipse.microprofile.config.inject.ConfigProperty;
 
-@ApplicationScoped
+@Singleton
 public class AutosyncTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;

dhfs-parent/sync-base/src/main/java/com/usatiuk/dhfs/repository/peertrust/PeerInfoCertUpdateTxHook.java

@@ -14,8 +14,9 @@ import com.usatiuk.objects.transaction.Transaction;
 import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
 
-@ApplicationScoped
+@Singleton
 public class PeerInfoCertUpdateTxHook implements PreCommitTxHook {
     @Inject
     Transaction curTx;