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.master.springboot;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.Executors;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ThreadLocalRandom;
  import java.util.concurrent.TimeUnit;
  import java.util.stream.Collectors;
  import java.util.stream.IntStream;
  
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.file.cluster.FileLockClusterService;
  import org.apache.camel.impl.DefaultCamelContext;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.context.annotation.Bean;
  import org.springframework.test.annotation.DirtiesContext;
  import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
  import org.apache.camel.spring.boot.CamelAutoConfiguration;
  
  @DirtiesContext
  @CamelSpringBootTest
  @SpringBootTest(classes = { CamelAutoConfiguration.class, MasterComponentTest.class, })
  
  public class MasterComponentTest {
      private static final Logger LOGGER = LoggerFactory.getLogger(MasterComponentTest.class);
      private static final List<String> INSTANCES = IntStream.range(0, 3).mapToObj(Integer::toString)
              .collect(Collectors.toList());
      private static final List<String> RESULTS = new ArrayList<>();
      private static final ScheduledExecutorService SCHEDULER = Executors.newScheduledThreadPool(INSTANCES.size());
      private static final CountDownLatch LATCH = new CountDownLatch(INSTANCES.size());
  
      @Test
      public void test() throws Exception {
          for (String instance : INSTANCES) {
              SCHEDULER.submit(() -> run(instance));
          }
  
          LATCH.await(1, TimeUnit.MINUTES);
          SCHEDULER.shutdownNow();
  
          assertEquals(INSTANCES.size(), RESULTS.size());
          assertTrue(RESULTS.containsAll(INSTANCES));
      }
  
      // ************************************
      // Run a Camel node
      // ************************************
  
      private static void run(String id) {
          try {
              int events = ThreadLocalRandom.current().nextInt(2, 6);
              CountDownLatch contextLatch = new CountDownLatch(events);
  
              FileLockClusterService service = new FileLockClusterService();
              service.setId(id);
              service.setRoot("target/cluster");
              service.setAcquireLockDelay(1, TimeUnit.SECONDS);
              service.setAcquireLockInterval(1, TimeUnit.SECONDS);
  
              DefaultCamelContext context = new DefaultCamelContext();
              context.disableJMX();
              context.getCamelContextExtension().setName("context-" + id);
              context.addService(service);
              context.addRoutes(new RouteBuilder() {
                  @Override
                  public void configure() throws Exception {
                      from("master:ns:timer:test?delay=1000&period=1000").routeId("route-" + id).log("From ${routeId}")
                              .process(e -> contextLatch.countDown());
                  }
              });
  
              // Start the context after some random time so the startup order
              // changes for each test.
              Thread.sleep(ThreadLocalRandom.current().nextInt(500));
              context.start();
  
              contextLatch.await();
  
              LOGGER.debug("Shutting down node {}", id);
              RESULTS.add(id);
  
              context.stop();
  
              LATCH.countDown();
          } catch (Exception e) {
              LOGGER.warn("", e);
          }
      }
  }