[backend] move hash to redact class. (#5526)

Author: a19836

openaev-api/src/main/java/io/openaev/service/LogService.java

@@ -33,8 +33,6 @@
 import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
-import static io.openaev.helper.CryptoHelper.hashWithSHA256;
-
 /**
  * Log service — builds structured {@link LogEvent} events for CRUD and authentication
  * operations.
@@ -397,8 +395,8 @@ private void populateUserMetadata(LogEvent doc) {
                 User user = userService.user(userId);
 
                 if (user != null && user.getEmail() != null) {
-                    String hash = hashWithSHA256(user.getEmail());
-                    meta.setUserEmail(hash);
+                    String email = ObjectRedactionUtils.hash(user.getEmail());
+                    meta.setUserEmail(email);
                     hasData = true;
                 }
             }

openaev-api/src/main/java/io/openaev/utils/object/ObjectRedactionUtils.java

@@ -5,6 +5,8 @@
 
 import java.util.Set;
 
+import static io.openaev.helper.CryptoHelper.hashWithSHA256;
+
 public class ObjectRedactionUtils {
 
     private static final String REDACTED = "*** Redacted ***";
@@ -38,4 +40,8 @@ public static JsonNode redact(JsonNode node, String entityTypeName) {
                         });
         return copy;
     }
+
+    public static String hash(String value) {
+        return hashWithSHA256(value);
+    }
 }