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.spring.boot;
  
  import java.io.Closeable;
  import java.io.InputStream;
  import org.apache.camel.CamelContext;
  import org.apache.camel.CamelExecutionException;
  import org.apache.camel.ProducerTemplate;
  import org.apache.camel.TypeConverter;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.impl.converter.DefaultTypeConverter;
  import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
  import org.junit.jupiter.api.Test;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.ConfigurableApplicationContext;
  import org.springframework.context.annotation.Bean;
  import org.springframework.test.annotation.DirtiesContext;
  import org.springframework.test.annotation.DirtiesContext.ClassMode;
  
  /**
   * Test class illustrating the invalid shutdown sequence when using the autoconfiguration provided by
   * <code>camel-spring-boot</code>.
   * <p>
   * This is caused by the {@link TypeConversionConfiguration} class registering a {@link TypeConverter} (of actual type
   * {@link DefaultTypeConverter}) in the Spring {@link ApplicationContext}. Its '{@code public void shutdown()}' method
   * is inferred as a destroy-method by <i>Spring</i>, which will thus be called before the {@link CamelContext} shutdown
   * when the context is closed.
   * <p>
   * As a consequence, any inflight message that should be processed during the graceful shutdown period of Camel won't
   * have access to any type conversion support.
   */
  @CamelSpringBootTest
  @DirtiesContext(classMode = ClassMode.AFTER_EACH_TEST_METHOD)
  // Let the CamelAutoConfiguration do all the configuration for us
  // including the TypeConverter registration into the ApplicationContext
  @SpringBootTest(classes = { CamelAutoConfiguration.class, CamelSpringBootShutdownTest.TestRouteConfiguration.class })
  public class CamelSpringBootShutdownTest {
  
      @Autowired
      private ConfigurableApplicationContext context;
  
      @Autowired
      private ProducerTemplate template;
  
      @Test
      public void test1() throws Exception {
          try {
              // Send a String body that need to be converted to an InputStream
              template.sendBody("direct:start", "42");
          } catch (CamelExecutionException e) {
              // unwrap Exception
              throw (Exception) e.getCause();
          }
      }
  
      @Test
      public void test2() throws Exception {
          try {
              // Starts a Thread to close the context in 500 ms
              new DelayedCloser(context, 500).start();
              // Send the same body, and let the context be closed before the processing happens
              template.sendBody("direct:start", "42");
          } catch (CamelExecutionException e) {
              // unwrap Exception
              throw (Exception) e.getCause();
          }
      }
  
      public static class DelayedCloser extends Thread {
  
          private final long sleep;
          private final Closeable closeable;
  
          public DelayedCloser(Closeable closeable, long sleep) {
              this.closeable = closeable;
              this.sleep = sleep;
          }
  
          @Override
          public void run() {
              try {
                  Thread.sleep(sleep);
                  closeable.close();
              } catch (Exception e) {
                  // ignore
              }
          }
      }
  
      public static class TestRouteConfiguration {
          @Bean
          public RouteBuilder route() {
              return new RouteBuilder() {
                  @Override
                  public void configure() throws Exception {
                      from("direct:start")
                              // delay the processing to force the exchange to be inflight
                              // during the context shutdown
                              .delay(1000).convertBodyTo(InputStream.class).to("log:route-log");
                  }
              };
          }
      }
  
  }
  