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.zookeeper.cloud.integration;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Map;
  import java.util.UUID;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.cloud.ServiceDefinition;
  import org.apache.camel.component.zookeeper.cloud.MetaData;
  import org.apache.camel.component.zookeeper.cloud.ZooKeeperServiceRegistry;
  import org.apache.camel.test.AvailablePortFinder;
  import org.apache.camel.test.infra.zookeeper.services.ZooKeeperContainer;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.apache.curator.framework.CuratorFramework;
  import org.apache.curator.framework.CuratorFrameworkFactory;
  import org.apache.curator.retry.ExponentialBackoffRetry;
  import org.apache.curator.utils.CloseableUtils;
  import org.apache.curator.x.discovery.ServiceDiscovery;
  import org.apache.curator.x.discovery.ServiceDiscoveryBuilder;
  import org.apache.curator.x.discovery.ServiceInstance;
  import org.apache.curator.x.discovery.details.JsonInstanceSerializer;
  import org.junit.jupiter.api.Test;
  
  import static org.awaitility.Awaitility.await;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public abstract class ZooKeeperServiceRegistrationITBase extends CamelTestSupport {
      protected static final String SERVICE_ID = UUID.randomUUID().toString();
      protected static final String SERVICE_NAME = "my-service";
      protected static final String SERVICE_HOST = "localhost";
      protected static final String SERVICE_PATH = "/camel";
      protected static final int SERVICE_PORT = AvailablePortFinder.getNextRandomAvailable();
  
      protected ZooKeeperContainer container;
      protected CuratorFramework curator;
      protected ServiceDiscovery<MetaData> discovery;
  
      // ***********************
      // Lifecycle
      // ***********************
  
      @Override
      protected void doPreSetup() throws Exception {
          super.doPreSetup();
  
          container = new ZooKeeperContainer();
          container.start();
  
          curator = CuratorFrameworkFactory.builder()
                  .connectString(container.getConnectionString())
                  .retryPolicy(new ExponentialBackoffRetry(1000, 3))
                  .build();
  
          discovery = ServiceDiscoveryBuilder.builder(MetaData.class)
                  .client(curator)
                  .basePath(SERVICE_PATH)
                  .serializer(new JsonInstanceSerializer<>(MetaData.class))
                  .build();
  
          curator.start();
          discovery.start();
      }
  
      @Override
      public void doPostTearDown() {
          CloseableUtils.closeQuietly(discovery);
          CloseableUtils.closeQuietly(curator);
  
          if (container != null) {
              container.stop();
          }
      }
  
      protected Map<String, String> getMetadata() {
          return Collections.emptyMap();
      }
  
      @Override
      protected CamelContext createCamelContext() throws Exception {
          final CamelContext context = super.createCamelContext();
  
          ZooKeeperServiceRegistry registry = new ZooKeeperServiceRegistry();
          registry.setId(context.getUuidGenerator().generateUuid());
          registry.setCamelContext(context());
          registry.setNodes(container.getConnectionString());
          registry.setBasePath(SERVICE_PATH);
          registry.setServiceHost(SERVICE_HOST);
          registry.setOverrideServiceHost(true);
  
          context.addService(registry, true, false);
  
          return context;
      }
  
      @Test
      public void testRegistrationFromRoute() throws Exception {
  
          // the service should not be registered as the route is not running
          assertTrue(discovery.queryForInstances(SERVICE_NAME).isEmpty());
  
          // let start the route
          context().getRouteController().startRoute(SERVICE_ID);
  
          // check that service has been registered
          await().atMost(2, TimeUnit.MINUTES)
                  .untilAsserted(() -> assertEquals(1, discovery.queryForInstances(SERVICE_NAME).size()));
          Collection<ServiceInstance<MetaData>> services = discovery.queryForInstances(SERVICE_NAME);
  
          ServiceInstance<MetaData> instance = services.iterator().next();
          assertEquals(SERVICE_PORT, (int) instance.getPort());
          assertEquals("localhost", instance.getAddress());
          assertEquals("http", instance.getPayload().get(ServiceDefinition.SERVICE_META_PROTOCOL));
          assertEquals("/service/endpoint", instance.getPayload().get(ServiceDefinition.SERVICE_META_PATH));
  
          getMetadata().forEach(
                  (k, v) -> {
                      assertEquals(v, instance.getPayload().get(k));
                  });
  
          // let stop the route
          context().getRouteController().stopRoute(SERVICE_ID);
  
          // the service should be removed once the route is stopped
          await().atMost(2, TimeUnit.MINUTES)
                  .untilAsserted(() -> assertTrue(discovery.queryForInstances(SERVICE_NAME).isEmpty()));
      }
  }
  