package org.springframework.cloud.client.serviceregistry;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
   import org.springframework.context.annotation.Configuration;
   import org.springframework.context.annotation.Import;
   
   import java.util.List;
   
  import javax.annotation.PostConstruct;
  
  /**
   * in /META-INF/spring.factories
   * see: {@link org.springframework.cloud.client.serviceregistry.AutoServiceRegistrationAutoConfiguration}
   *
   * @author haolun zhang
   */
  @Configuration
  @Import(AutoMultiServiceRegistrationConfiguration.class)
  @ConditionalOnProperty(value = "spring.cloud.service-registry.auto-multi-registration.enabled", havingValue = "true")
  public class AutoMultiServiceRegistrationAutoConfiguration {
  
      /**
       * i.e. EurekaAutoServiceRegistration, ConsulAutoServiceRegistration ...
       */
      @Autowired(required = false)
      private List<AutoServiceRegistration> autoServiceRegistrations;
  
      @Autowired
      private AutoServiceRegistrationProperties properties;
  
      @PostConstruct
      protected void init() {
          if ((autoServiceRegistrations == null || autoServiceRegistrations.size() < 1) && this.properties.isFailFast()) {
              throw new IllegalStateException("Auto Multi Service Registration has been requested, but there is no AutoServiceRegistration bean");
          }
      }
  }