java - Spring Boot 2 的 Redis 健康检查挂起

Question

我在我的 Spring Boot 2.1.5 应用程序中实现了一些 Redis 的东西。效果很好。我还想要redis的健康检查。如果我关闭 Redis 服务器，运行状况检查(执行器/运行状况)将永远挂起。如何配置合理的超时？

我在这里创建了这个问题的一个小演示: https://github.com/markuskruse/demo-redis-health-bug

克隆、运行、停止redis、检查运行状况(永远等待)、启动redis(运行状况返回)。

这是我的 redis gradle:

implementation 'org.springframework.boot:spring-boot-starter-data-redis'

这是我的 application.yaml:

spring:
   redis:
      timeout: 5000
      host: localhost

这是我的 RedisConfig.java

@Configuration
@EnableConfigurationProperties(RedisProperties.class)
public class RedisConfig {

  @Bean
  public LettuceConnectionFactory redisConnectionFactory(
      @Value("${spring.redis.host:localhost}") String redisHost) {
    RedisStandaloneConfiguration redisStandaloneConfiguration =
        new RedisStandaloneConfiguration(redisHost);
    return new LettuceConnectionFactory(redisStandaloneConfiguration);
  }

  @Bean
  public StringRedisTemplate redisTemplate(RedisConnectionFactory jedisConnectionFactory) {
    final StringRedisTemplate template = new StringRedisTemplate();
    template.setConnectionFactory(jedisConnectionFactory);
    template.afterPropertiesSet();
    return template;
  }
}

根据github上的这个问题，这只是一个配置问题: https://github.com/spring-projects/spring-boot/issues/15542

根据此 jira 票证，它应该在 Spring Boot 2.1.4 中修复(我使用的是 2.1.5)。 https://jira.spring.io/browse/DATAREDIS-918

他们提到了我尝试过的解决方法:

  @Bean
  public ClientOptions clientOptions() {
    return ClientOptions.builder()
        .timeoutOptions(TimeoutOptions.enabled())
        .build();
  }

它本身没有任何效果。我必须把它注入(inject)到某个地方。谷歌搜索给出了这个:

  @Bean
  LettucePoolingClientConfiguration lettucePoolConfig(ClientOptions options, ClientResources dcr){
    return LettucePoolingClientConfiguration.builder()
        .clientOptions(options)
        .clientResources(dcr)
        .build();
  }

然后我得到这个:

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration]: Factory method 'lettucePoolConfig' threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/commons/pool2/impl/GenericObjectPoolConfig
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
    ... 50 more
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/pool2/impl/GenericObjectPoolConfig
    at org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration$LettucePoolingClientConfigurationBuilder.<init>(LettucePoolingClientConfiguration.java:91)
    at org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration.builder(LettucePoolingClientConfiguration.java:50)
    at com.ikea.cps.mhs.config.RedisConfig.lettucePoolConfig(RedisConfig.java:50)
    at com.ikea.cps.mhs.config.RedisConfig$$EnhancerBySpringCGLIB$$3804d114.CGLIB$lettucePoolConfig$3(<generated>)
    at com.ikea.cps.mhs.config.RedisConfig$$EnhancerBySpringCGLIB$$3804d114$$FastClassBySpringCGLIB$$ccabed80.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
    at com.ikea.cps.mhs.config.RedisConfig$$EnhancerBySpringCGLIB$$3804d114.lettucePoolConfig(<generated>)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 51 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.pool2.impl.GenericObjectPoolConfig
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    ... 64 more

我也许可以解决这个问题。但我认为我做的事情(从根本上)是错误的。应该已经修复了。

编辑:我添加了公共(public)池，错误消失了，但运行状况检查仍然永远挂起。

我也在下面尝试过，但没有效果。

@Component
public class RedisConfigurer implements LettuceClientConfigurationBuilderCustomizer {

  @Override
  public void customize(LettuceClientConfigurationBuilder builder) {
    builder.clientOptions(ClientOptions.builder()
        .timeoutOptions(TimeoutOptions.enabled(Duration.of(5, SECONDS))).build());
  }

}

Answer 1

您的问题似乎出在您的手动连接工厂配置中。

如果您删除该部分，一切都会如您所愿。

否则，您需要为 LettuceConnectionFactory 构造函数的第二个参数提供 LettuceClientConfiguration，然后您可以在启用 的情况下配置 ClientOptions超时选项