Client autoconfiguration should be conditional on PrometheusMeterRegistry bean (#37)

* exclude client autoconfiguration from proxy

Co-authored-by: ss047890 <[email protected]>

Author: smsteele

proxy/src/main/java/io/micrometer/prometheus/rsocket/PrometheusRSocketProxyMain.java

@@ -16,10 +16,11 @@
 package io.micrometer.prometheus.rsocket;
 
 import io.micrometer.prometheus.rsocket.autoconfigure.EnablePrometheusRSocketProxyServer;
+import io.micrometer.prometheus.rsocket.autoconfigure.PrometheusRSocketClientAutoConfiguration;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-@SpringBootApplication
+@SpringBootApplication(exclude = PrometheusRSocketClientAutoConfiguration.class)
 @EnablePrometheusRSocketProxyServer
 public class PrometheusRSocketProxyMain {
   public static void main(String[] args) {

starter-spring/src/main/java/io/micrometer/prometheus/rsocket/autoconfigure/PrometheusRSocketClientAutoConfiguration.java

@@ -20,7 +20,7 @@
 import io.micrometer.prometheus.rsocket.PrometheusRSocketClient;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus.PrometheusMetricsExportAutoConfiguration;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
@@ -30,7 +30,7 @@
 
 @Configuration
 @AutoConfigureAfter(PrometheusMetricsExportAutoConfiguration.class)
-@ConditionalOnClass(PrometheusMeterRegistry.class)
+@ConditionalOnBean(PrometheusMeterRegistry.class)
 @ConditionalOnProperty(prefix = "management.metrics.export.prometheus.rsocket", name = "enabled", havingValue = "true", matchIfMissing = true)
 @EnableConfigurationProperties(PrometheusRSocketClientProperties.class)
 public class PrometheusRSocketClientAutoConfiguration {