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.hl7;
  
  import ca.uhn.hl7v2.model.Message;
  import io.netty.util.ResourceLeakDetector;
  import org.apache.camel.BindToRegistry;
  import org.apache.camel.Exchange;
  import org.apache.camel.Processor;
  import org.apache.camel.builder.RouteBuilder;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
  
  public class HL7MLLPNettyDecoderResourceLeakTest extends HL7TestSupport {
  
      @BindToRegistry("hl7decoder")
      HL7MLLPNettyDecoderFactory decoder = new HL7MLLPNettyDecoderFactory();
  
      @BindToRegistry("hl7encoder")
      HL7MLLPNettyEncoderFactory encoder = new HL7MLLPNettyEncoderFactory();
  
      @BeforeAll
      // As the ResourceLeakDetector just write error log when it find the leak,
      // We need to check the log file to see if there is a leak.
      public static void enableNettyResourceLeakDetector() {
          ResourceLeakDetector.setLevel(ResourceLeakDetector.Level.PARANOID);
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from("netty:tcp://127.0.0.1:" + getPort() + "?decoders=#hl7decoder&encoders=#hl7encoder")
                          .process(new Processor() {
                              public void process(Exchange exchange) throws Exception {
                                  Message input = exchange.getIn().getBody(Message.class);
                                  exchange.getOut().setBody(input.generateACK());
                              }
                          }).to("mock:result");
              }
          };
      }
  
      @Test
      public void testSendHL7Message() {
          assertDoesNotThrow(() -> sendHL7Message());
      }
  
      private void sendHL7Message() {
          String message = "MSH|^~\\&|MYSENDER|MYRECEIVER|MYAPPLICATION||200612211200||QRY^A19|1234|P|2.4";
  
          for (int i = 0; i < 10; i++) {
              template.sendBody("netty:tcp://127.0.0.1:" + getPort() + "?decoders=#hl7decoder&encoders=#hl7encoder", message);
          }
      }
  }
  