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 org.apache.camel.CamelContext;
  import org.apache.camel.model.cloud.ServiceCallConfigurationDefinition;
  import org.apache.camel.model.cloud.ServiceCallDefinitionConstants;
  import org.apache.camel.spi.Language;
  import org.apache.camel.spring.boot.util.GroupCondition;
  import org.apache.camel.util.ObjectHelper;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
  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, CamelContext.class })
  @EnableConfigurationProperties(CamelCloudConfigurationProperties.class)
  @Conditional(CamelCloudServiceCallConfigurationAutoConfiguration.ServiceCallCondition.class)
  public class CamelCloudServiceCallConfigurationAutoConfiguration {
      @Autowired
      private CamelContext camelContext;
      @Autowired
      private CamelCloudConfigurationProperties configurationProperties;
  
      @Lazy
      @Bean(name = ServiceCallDefinitionConstants.DEFAULT_SERVICE_CALL_CONFIG_ID)
      @ConditionalOnMissingBean(name = ServiceCallDefinitionConstants.DEFAULT_SERVICE_CALL_CONFIG_ID)
      public ServiceCallConfigurationDefinition serviceCallConfiguration() throws Exception {
          final ServiceCallConfigurationDefinition definition = new ServiceCallConfigurationDefinition();
          final CamelCloudConfigurationProperties.ServiceCall serviceCall = configurationProperties.getServiceCall();
  
          ObjectHelper.ifNotEmpty(serviceCall.getComponent(), definition::setComponent);
          ObjectHelper.ifNotEmpty(serviceCall.getUri(), definition::setUri);
          ObjectHelper.ifNotEmpty(serviceCall.getServiceDiscovery(), definition::setServiceDiscoveryRef);
          ObjectHelper.ifNotEmpty(serviceCall.getServiceFilter(), definition::setServiceFilterRef);
          ObjectHelper.ifNotEmpty(serviceCall.getServiceChooser(), definition::setServiceChooserRef);
          ObjectHelper.ifNotEmpty(serviceCall.getLoadBalancer(), definition::setLoadBalancerRef);
  
          if (serviceCall.getLoadBalancer() == null && serviceCall.isDefaultLoadBalancer()) {
              definition.defaultLoadBalancer();
          }
  
          final String expression = serviceCall.getExpression();
          final String expressionLanguage = serviceCall.getExpressionLanguage();
  
          if (ObjectHelper.isNotEmpty(expression) && ObjectHelper.isNotEmpty(expressionLanguage)) {
              Language language = camelContext.resolveLanguage(expressionLanguage);
              if (language == null) {
                  throw new IllegalArgumentException("Unable to resolve language: " + expressionLanguage);
              }
  
              definition.setExpression(language.createExpression(expression));
          }
  
          return definition;
      }
  
      // *******************************
      // Condition
      // *******************************
  
      public static class ServiceCallCondition extends GroupCondition {
          public ServiceCallCondition() {
              super("camel.cloud", "camel.cloud.service-call");
          }
      }
  }
  