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.camel.component.sjms.reply;
  
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.function.BiConsumer;
  
  import org.apache.camel.support.DefaultTimeoutMap;
  
  import static org.apache.camel.TimeoutMap.Listener.Type.*;
  
  /**
   * A {@link org.apache.camel.TimeoutMap} which is used to track reply messages which has been timed out, and thus should
   * trigger the waiting {@link org.apache.camel.Exchange} to timeout as well. Zero (or negative) timeout means infinite
   * but is actually encoded as {@link Integer#MAX_VALUE} which is 24 days.
   */
  class CorrelationTimeoutMap extends DefaultTimeoutMap<String, ReplyHandler> {
  
      private final BiConsumer<ReplyHandler, String> evictionTask;
  
      CorrelationTimeoutMap(ScheduledExecutorService executor, long requestMapPollTimeMillis, ExecutorService executorService) {
          super(executor, requestMapPollTimeMillis);
          // Support synchronous or asynchronous handling of evictions
          evictionTask = executorService == null
                  ? ReplyHandler::onTimeout
                  : (handler, key) -> executorService.submit(() -> handler.onTimeout(key));
          addListener(this::listener);
      }
  
      private static long encode(long timeoutMillis) {
          return timeoutMillis > 0 ? timeoutMillis : Integer.MAX_VALUE; // TODO why not Long.MAX_VALUE!
      }
  
      private void listener(Listener.Type type, String key, ReplyHandler handler) {
          if (type == Put) {
              log.trace("Added correlationID: {}", key);
          } else if (type == Remove) {
              log.trace("Removed correlationID: {}", key);
          } else if (type == Evict) {
              evictionTask.accept(handler, key);
              log.trace("Evicted correlationID: {}", key);
          }
      }
  
      @Override
      public ReplyHandler put(String key, ReplyHandler value, long timeoutMillis) {
          return super.put(key, value, encode(timeoutMillis));
      }
  
      @Override
      public ReplyHandler putIfAbsent(String key, ReplyHandler value, long timeoutMillis) {
          return super.putIfAbsent(key, value, encode(timeoutMillis));
      }
  
  }
  