/*
    * 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.shardingsphere.infra.session.connection.transaction;
  
  import lombok.Getter;
  import lombok.Setter;
  
  import java.util.Optional;
  import java.util.concurrent.atomic.AtomicReference;
  
  /**
   * Transaction connection context.
   */
  @Getter
  public final class TransactionConnectionContext implements AutoCloseable {
      
      private volatile String transactionType;
      
      private volatile boolean inTransaction;
      
      @Setter
      private volatile long beginMillis;
      
      @Setter
      private volatile boolean exceptionOccur;
      
      @Setter
      private volatile String readWriteSplitReplicaRoute;
      
      private AtomicReference<TransactionManager> transactionManager;
      
      /**
       * Begin transaction.
       *
       * @param transactionType transaction type
       * @param transactionManager transaction manager
       */
      public void beginTransaction(final String transactionType, final TransactionManager transactionManager) {
          this.transactionType = transactionType;
          inTransaction = true;
          this.transactionManager = new AtomicReference<>(transactionManager);
      }
      
      /**
       * Judge is in distributed transaction or not.
       *
       * @return in distributed transaction or not
       */
      public boolean isInDistributedTransaction() {
          return inTransaction && ("XA".equals(transactionType) || "BASE".equals(transactionType));
      }
      
      /**
       * Get transaction type. 
       *
       * @return transaction type
       */
      public Optional<String> getTransactionType() {
          return Optional.ofNullable(transactionType);
      }
      
      /**
       * Get read write split replica route. 
       *
       * @return read write split replica route
       */
      public Optional<String> getReadWriteSplitReplicaRoute() {
          return Optional.ofNullable(readWriteSplitReplicaRoute);
      }
      
      /**
       * Get transaction manager.
       *
       * @return transaction manager
       */
      public Optional<TransactionManager> getTransactionManager() {
          return null == transactionManager ? Optional.empty() : Optional.ofNullable(transactionManager.get());
      }
      
      @Override
      public void close() {
          transactionType = null;
          inTransaction = false;
          beginMillis = 0L;
         exceptionOccur = false;
         readWriteSplitReplicaRoute = null;
         transactionManager = null;
     }
 }