Hystrix 源码解读_hystrix源码

入口

@EnableCircuitBreaker 这注解也能开启Hystrix的相关功能
复制代码

其中读取spring.factories哪个文件的入口在此 org.springframework.cloud.commons.util.SpringFactoryImportSelector#selectImports

public String[] selectImports(AnnotationMetadata metadata) {
   if (!isEnabled()) {
      return new String[0];
   }
   AnnotationAttributes attributes = AnnotationAttributes.fromMap(
         metadata.getAnnotationAttributes(this.annotationClass.getName(), true));
 
   Assert.notNull(attributes, "No " + getSimpleName() + " attributes found. Is "
         + metadata.getClassName() + " annotated with @" + getSimpleName() + "?");
 
   // 因为是EnableCircuitBreaker这个注解读取的是META-INF/spring.factories 中org.springframework.cloud.netflix.hystrix.HystrixCircuitBreakerConfiguration  这个配置
   List<String> factories = new ArrayList<>(