Add debug log to RoleManager

Author: barreiro

horreum-backend/src/main/java/io/hyperfoil/tools/horreum/server/RoleManager.java

@@ -2,21 +2,26 @@
 
 import java.util.ArrayList;
 import java.util.List;
+
+import io.quarkus.logging.Log;
 import jakarta.enterprise.context.ApplicationScoped;
 import jakarta.inject.Inject;
 import jakarta.persistence.EntityManager;
 import jakarta.persistence.Query;
 
 import io.quarkus.security.identity.SecurityIdentity;
+import jakarta.transaction.SystemException;
+import jakarta.transaction.TransactionManager;
 
 @ApplicationScoped
 public class RoleManager {
    static final String SET_ROLES = "SELECT current_setting('horreum.userroles', true), set_config('horreum.userroles', ?, false)";
    static final String SET_TOKEN = "SELECT set_config('horreum.token', ?, false)";
    static final CloseMe NOOP = () -> {};
 
-   @Inject
-   EntityManager em;
+   @Inject EntityManager em;
+
+   @Inject TransactionManager txManager;
 
    String setRoles(Iterable<String> roles) {
       return setRoles(String.join(",", roles));
@@ -26,6 +31,14 @@ String setRoles(String roles) {
       Query setRoles = em.createNativeQuery(SET_ROLES);
       setRoles.setParameter(1, roles == null ? "" : roles);
       Object[] row = (Object[]) setRoles.getSingleResult();
+
+      if (Log.isDebugEnabled()) { // enabe with: `quarkus.log.category."io.hyperfoil.tools.horreum.server.RoleManager".level=DEBUG`
+         try {
+            Log.debugv("Setting roles {0} (replacing {1}) on transaction {2}", roles, row[0], txManager.getTransaction());
+         } catch (SystemException e) {
+            Log.debugv("Setting roles {0} (replacing {1}), but obtaining current transaction failed due to {2}", roles, row[0], e.getMessage());
+         }
+      }
       return (String) row[0];
    }