Allow histograms to be disabled for Lettuce metrics

Closes gh-32985

Author: wilkinsona

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/redis/LettuceMetricsAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,7 @@
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.data.redis.ClientResourcesBuilderCustomizer;
 import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
 import org.springframework.context.annotation.Bean;
@@ -47,8 +48,13 @@
 public class LettuceMetricsAutoConfiguration {
 
 	@Bean
-	public ClientResourcesBuilderCustomizer lettuceMetrics(MeterRegistry meterRegistry) {
-		MicrometerOptions options = MicrometerOptions.builder().histogram(true).build();
+	@ConditionalOnMissingBean
+	MicrometerOptions micrometerOptions() {
+		return MicrometerOptions.builder().histogram(true).build();
+	}
+
+	@Bean
+	ClientResourcesBuilderCustomizer lettuceMetrics(MeterRegistry meterRegistry, MicrometerOptions options) {
 		return (client) -> client.commandLatencyRecorder(new MicrometerCommandLatencyRecorder(meterRegistry, options));
 	}
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/redis/LettuceMetricsAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,13 +17,16 @@
 package org.springframework.boot.actuate.autoconfigure.metrics.redis;
 
 import io.lettuce.core.metrics.MicrometerCommandLatencyRecorder;
+import io.lettuce.core.metrics.MicrometerOptions;
 import io.lettuce.core.resource.ClientResources;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -49,6 +52,20 @@ void whenThereIsAMeterRegistryThenCommandLatencyRecorderIsAdded() {
 				});
 	}
 
+	@Test
+	void whenUserDefinesAMicrometerOptionsBeanThenCommandLatencyRecorderUsesIt() {
+		this.contextRunner.with(MetricsRun.simple())
+				.withConfiguration(AutoConfigurations.of(RedisAutoConfiguration.class))
+				.withUserConfiguration(CustomMicrometerOptionsConfiguration.class).run((context) -> {
+					ClientResources clientResources = context.getBean(LettuceConnectionFactory.class)
+							.getClientResources();
+					assertThat(clientResources.commandLatencyRecorder())
+							.isInstanceOf(MicrometerCommandLatencyRecorder.class);
+					assertThat(clientResources.commandLatencyRecorder()).hasFieldOrPropertyWithValue("options",
+							context.getBean("customMicrometerOptions"));
+				});
+	}
+
 	@Test
 	void whenThereIsNoMeterRegistryThenClientResourcesCustomizationBacksOff() {
 		this.contextRunner.withConfiguration(AutoConfigurations.of(RedisAutoConfiguration.class)).run((context) -> {
@@ -58,4 +75,14 @@ void whenThereIsNoMeterRegistryThenClientResourcesCustomizationBacksOff() {
 		});
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class CustomMicrometerOptionsConfiguration {
+
+		@Bean
+		MicrometerOptions customMicrometerOptions() {
+			return MicrometerOptions.create();
+		}
+
+	}
+
 }