HystrixCodaHaleMetricsPublisher不与弹簧云假象hystrix一起工作。

Question

在将spring-cloud-feign与HystrixCodaHaleMetricsPublisher和Graphite结合使用时，我遇到了一个奇怪的问题。创建了度量节点，但没有数据进入。

我的配置：

@Configuration
@RequiredArgsConstructor
@EnableConfigurationProperties(ApiGatewayProperties.class)
@EnableFeignClients
public class AccountSettingsClientConfig {
    private final ApiGatewayProperties apiGatewayProperties;

    @Bean
    public RequestInterceptor oauth2FeignRequestInterceptor() {
        return new OAuth2FeignRequestInterceptor(new DefaultOAuth2ClientContext(), resource());
    }

    @Bean
    public okhttp3.OkHttpClient okHttpClient() {
        return new OkHttpClient.Builder().hostnameVerifier((s, sslSession) -> true)
                .build();
    }

    @Bean
    public AccountSettingsClientFallbackFactory accountSettingsClientFallbackFactory() {
        return new AccountSettingsClientFallbackFactory();
    }

Answer 1

最后，我找到了解决这个问题的办法。问题是，默认的SetterFactory of FeignHistrix生成具有无效字符(对于石墨)的commandKey，即development.local.AccountSettingsClient.AccountSettingsClient#accountSettings(String).countBadRequests。在这种情况下无效的字符是#和()。当一个GraphiteReport开始向Graphite发送数据时，一切都正常，数据被发送，但是Graphite无法处理它。所以没有数据被持久化。

作为解决办法，我注册了一个自定义SetterFactory：

 @Bean
public SetterFactory setterFactoryThatGeneratesGraphiteConformCommandKey() {
    return (target, method) -> {
        String groupKey = target.name();
        //allowed chars for graphite are a-z, A-Z, 0-9, "-", "_", "." and "/".
        //We don't use default SetterFactory.Default because it generates command key with parenthesis () and #
        String commandKey = target.type().getSimpleName() + "-" + method.getName();
        return HystrixCommand.Setter
                .withGroupKey(HystrixCommandGroupKey.Factory.asKey(groupKey))
                .andCommandKey(HystrixCommandKey.Factory.asKey(commandKey));
    };
}

现在一切都正常了。