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.cloud;
  
  import jakarta.annotation.PostConstruct;
  import java.util.Arrays;
  import java.util.List;
  import java.util.Map;
  import org.apache.camel.CamelContext;
  import org.apache.camel.impl.cloud.BlacklistServiceFilter;
  import org.apache.camel.impl.cloud.DefaultServiceDefinition;
  import org.apache.camel.impl.cloud.HealthyServiceFilter;
  import org.apache.camel.spring.boot.util.GroupCondition;
  import org.apache.camel.util.ObjectHelper;
  import org.apache.camel.util.StringHelper;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.BeanFactory;
  import org.springframework.beans.factory.BeanFactoryAware;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.config.ConfigurableBeanFactory;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
  import org.springframework.boot.context.properties.EnableConfigurationProperties;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Conditional;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.context.annotation.Lazy;
  
  @Configuration(proxyBeanMethods = false)
  @ConditionalOnBean(CamelCloudAutoConfiguration.class)
  @EnableConfigurationProperties(CamelCloudConfigurationProperties.class)
  @Conditional(CamelCloudServiceFilterAutoConfiguration.Condition.class)
  public class CamelCloudServiceFilterAutoConfiguration implements BeanFactoryAware {
      private static final Logger LOGGER = LoggerFactory.getLogger(CamelCloudServiceFilterAutoConfiguration.class);
  
      private BeanFactory beanFactory;
  
      @Autowired
      private CamelContext camelContext;
      @Autowired
      private CamelCloudConfigurationProperties configurationProperties;
  
      @Override
      public void setBeanFactory(BeanFactory factory) throws BeansException {
          beanFactory = factory;
      }
  
      @Lazy
      @Bean(name = "service-filter")
      public CamelCloudServiceFilter serviceFilter() {
          return createServiceFilter(configurationProperties.getServiceFilter());
      }
  
      @PostConstruct
      public void addServiceFilterConfigurations() {
          if (!(beanFactory instanceof ConfigurableBeanFactory)) {
              LOGGER.warn("BeanFactory is not of type ConfigurableBeanFactory");
              return;
          }
  
          final ConfigurableBeanFactory factory = (ConfigurableBeanFactory) beanFactory;
  
          configurationProperties.getServiceFilter().getConfigurations().entrySet().stream()
                  .forEach(entry -> registerBean(factory, entry.getKey(), entry.getValue()));
      }
  
      // *******************************
      // Condition
      // *******************************
  
      public static class Condition extends GroupCondition {
          public Condition() {
              super("camel.cloud", "camel.cloud.service-filter");
          }
      }
  
      // *******************************
      // Helper
      // *******************************
  
      private void registerBean(ConfigurableBeanFactory factory, String name,
              CamelCloudConfigurationProperties.ServiceFilterConfiguration configuration) {
          factory.registerSingleton(name, createServiceFilter(configuration));
      }
  
      private CamelCloudServiceFilter createServiceFilter(
              CamelCloudConfigurationProperties.ServiceFilterConfiguration configuration) {
          BlacklistServiceFilter blacklist = new BlacklistServiceFilter();
  
          Map<String, List<String>> services = configuration.getBlacklist();
          for (Map.Entry<String, List<String>> entry : services.entrySet()) {
              for (String part : entry.getValue()) {
                  String host = StringHelper.before(part, ":");
                  String port = StringHelper.after(part, ":");
  
                  if (ObjectHelper.isNotEmpty(host) && ObjectHelper.isNotEmpty(port)) {
                      blacklist.addServer(DefaultServiceDefinition.builder().withName(entry.getKey()).withHost(host)
                              .withPort(Integer.parseInt(port)).build());
                  }
              }
          }
  
          return new CamelCloudServiceFilter(Arrays.asList(new HealthyServiceFilter(), blacklist));
      }
  }
  