content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   */
  package org.apache.causeway.persistence.commons.integration.deadlock;
  
  import lombok.RequiredArgsConstructor;
  import lombok.extern.log4j.Log4j2;
  
  import jakarta.annotation.Priority;
  import jakarta.inject.Inject;
  
  import org.apache.causeway.applib.annotation.PriorityPrecedence;
  
  import org.apache.causeway.core.metamodel.services.deadlock.DeadlockRecognizer;
  
  import org.springframework.dao.DeadlockLoserDataAccessException;
  import org.springframework.stereotype.Component;
  
  /**
   * Default implementation that supports Spring Boot's {@link DeadlockLoserDataAccessException} and also the standard
   * message thrown by SQL Server.
   *
   * @since 2.1
   */
  @Component
  @Priority(PriorityPrecedence.LATE)
  @RequiredArgsConstructor(onConstructor_ = {@Inject})
  @Log4j2
  public class DeadlockRecognizerDefault implements DeadlockRecognizer {
  
      static final String SQL_SERVER_DEADLOCK_MESSAGE = "chosen as the deadlock victim";
  
      @Override
      public boolean isDeadlock(Throwable ex) {
          var whetherDeadlock = ex instanceof DeadlockLoserDataAccessException || isMessage(ex, SQL_SERVER_DEADLOCK_MESSAGE);
          if (whetherDeadlock) {
              log.warn("Detected deadlock");
              log.debug("Detected deadlock details:", ex);
          }
          return whetherDeadlock;
      }
  
      private static boolean isMessage(Throwable ex, String message) {
          return isMessage(ex.getMessage(), message);
      }
  
      private static boolean isMessage(String exMessage, String message) {
          return exMessage != null && exMessage.contains(message);
      }
  
  }
  