Improve testing of metrics auto-configuration

Closes gh-11970

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

@@ -130,6 +130,7 @@ public class MetricsAutoConfiguration {
 	 */
 	@Configuration
 	@ConditionalOnClass(EnableIntegrationManagement.class)
+	@ConditionalOnProperty(value = "management.metrics.binders.integration.enabled", matchIfMissing = true)
 	static class MetricsIntegrationConfiguration {
 
 		@Bean(name = IntegrationManagementConfigurer.MANAGEMENT_CONFIGURER_NAME)
@@ -142,6 +143,7 @@ public class MetricsAutoConfiguration {
 		}
 
 		@Bean
+		@ConditionalOnMissingBean
 		public SpringIntegrationMetrics springIntegrationMetrics(
 				IntegrationManagementConfigurer configurer) {
 			return new SpringIntegrationMetrics(configurer);

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.java

@@ -21,6 +21,7 @@ import io.micrometer.prometheus.PrometheusConfig;
 import io.micrometer.prometheus.PrometheusMeterRegistry;
 import io.prometheus.client.CollectorRegistry;
 
+import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnEnabledEndpoint;
 import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.web.ManagementContextConfiguration;
@@ -73,6 +74,8 @@ public class PrometheusMetricsExportAutoConfiguration {
 	public static class PrometheusScrapeEndpointConfiguration {
 
 		@Bean
+		@ConditionalOnEnabledEndpoint
+		@ConditionalOnMissingBean
 		public PrometheusScrapeEndpoint prometheusEndpoint(
 				CollectorRegistry collectorRegistry) {
 			return new PrometheusScrapeEndpoint(collectorRegistry);

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/simple/SimpleMetricsExportAutoConfiguration.java

@@ -49,7 +49,6 @@ import org.springframework.context.annotation.Configuration;
 public class SimpleMetricsExportAutoConfiguration {
 
 	@Bean
-	@ConditionalOnMissingBean(MeterRegistry.class)
 	public SimpleMeterRegistry simpleMeterRegistry(SimpleConfig config, Clock clock) {
 		return new SimpleMeterRegistry(config, clock);
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/statsd/StatsdMetricsExportAutoConfiguration.java

@@ -54,6 +54,7 @@ public class StatsdMetricsExportAutoConfiguration {
 	}
 
 	@Bean
+	@ConditionalOnMissingBean
 	public StatsdMeterRegistry statsdMeterRegistry(StatsdConfig statsdConfig,
 			HierarchicalNameMapper hierarchicalNameMapper, Clock clock) {
 		return new StatsdMeterRegistry(statsdConfig, hierarchicalNameMapper, clock);

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -178,6 +178,12 @@
     {
       "name": "management.info.git.mode",
       "defaultValue": "simple"
+    },
+        {
+      "name": "management.metrics.binders.integration.enabled",
+      "type": "java.lang.Boolean",
+      "description": "Whether to enable Spring Integration metrics.",
+      "defaultValue": true
     },
     {
       "name": "management.metrics.binders.jvm.enabled",

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

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.MockClock;
+import io.micrometer.core.instrument.composite.CompositeMeterRegistry;
+import io.micrometer.core.instrument.simple.SimpleConfig;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import io.micrometer.graphite.GraphiteMeterRegistry;
+import io.micrometer.jmx.JmxMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.actuate.autoconfigure.metrics.export.graphite.GraphiteMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.export.jmx.JmxMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for metrics auto-configuration.
+ *
+ * @author Stephane Nicoll
+ */
+public class MetricsAutoConfigurationIntegrationTests {
+
+	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.with(MetricsRun.simple());
+
+	@Test
+	public void propertyBasedMeterFilteringIsAutoConfigured() {
+		this.contextRunner.withPropertyValues("management.metrics.enable.my.org=false")
+				.run((context) -> {
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					registry.timer("my.org.timer");
+					assertThat(registry.find("my.org.timer").timer()).isNull();
+				});
+	}
+
+	@Test
+	public void simpleMeterRegistryIsUsedAsAFallback() {
+		this.contextRunner
+				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
+						.isInstanceOf(SimpleMeterRegistry.class));
+	}
+
+	@Test
+	public void emptyCompositeIsCreatedWhenNoMeterRegistriesAreAutoConfigured() {
+		new ApplicationContextRunner().with(MetricsRun.limitedTo()).run((context) -> {
+			MeterRegistry registry = context.getBean(MeterRegistry.class);
+			assertThat(registry).isInstanceOf(CompositeMeterRegistry.class);
+			assertThat(((CompositeMeterRegistry) registry).getRegistries()).isEmpty();
+		});
+	}
+
+	@Test
+	public void noCompositeIsCreatedWhenASingleMeterRegistryIsAutoConfigured() {
+		new ApplicationContextRunner()
+				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class))
+				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
+						.isInstanceOf(GraphiteMeterRegistry.class));
+	}
+
+	@Test
+	public void noCompositeIsCreatedWithMultipleRegistriesAndOneThatIsPrimary() {
+		new ApplicationContextRunner()
+				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class,
+						JmxMetricsExportAutoConfiguration.class))
+				.withUserConfiguration(PrimaryMeterRegistryConfiguration.class)
+				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
+						.isInstanceOf(SimpleMeterRegistry.class));
+	}
+
+	@Test
+	public void compositeCreatedWithMultipleRegistries() {
+		new ApplicationContextRunner()
+				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class,
+						JmxMetricsExportAutoConfiguration.class))
+				.run((context) -> {
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					assertThat(registry).isInstanceOf(CompositeMeterRegistry.class);
+					assertThat(((CompositeMeterRegistry) registry).getRegistries())
+							.hasAtLeastOneElementOfType(GraphiteMeterRegistry.class)
+							.hasAtLeastOneElementOfType(JmxMeterRegistry.class);
+				});
+	}
+
+	@Configuration
+	static class PrimaryMeterRegistryConfiguration {
+
+		@Primary
+		@Bean
+		public MeterRegistry simpleMeterRegistry() {
+			return new SimpleMeterRegistry(SimpleConfig.DEFAULT, new MockClock());
+		}
+
+	}
+
+}

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

@@ -16,222 +16,309 @@
 
 package org.springframework.boot.actuate.autoconfigure.metrics;
 
-import java.util.UUID;
-
-import javax.sql.DataSource;
+import java.util.List;
 
 import io.micrometer.core.instrument.Clock;
 import io.micrometer.core.instrument.MeterRegistry;
-import io.micrometer.core.instrument.MockClock;
+import io.micrometer.core.instrument.binder.MeterBinder;
+import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics;
+import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics;
+import io.micrometer.core.instrument.binder.jvm.JvmThreadMetrics;
+import io.micrometer.core.instrument.binder.logging.LogbackMetrics;
+import io.micrometer.core.instrument.binder.system.ProcessorMetrics;
+import io.micrometer.core.instrument.binder.system.UptimeMetrics;
 import io.micrometer.core.instrument.composite.CompositeMeterRegistry;
-import io.micrometer.core.instrument.simple.SimpleConfig;
+import io.micrometer.core.instrument.config.MeterFilter;
 import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
-import io.micrometer.graphite.GraphiteMeterRegistry;
-import io.micrometer.jmx.JmxMeterRegistry;
 import org.junit.Test;
 
-import org.springframework.boot.actuate.autoconfigure.metrics.export.graphite.GraphiteMetricsExportAutoConfiguration;
-import org.springframework.boot.actuate.autoconfigure.metrics.export.jmx.JmxMetricsExportAutoConfiguration;
-import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
+import org.springframework.boot.actuate.metrics.integration.SpringIntegrationMetrics;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
-import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
-import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Primary;
+import org.springframework.integration.support.management.IntegrationManagementConfigurer;
+import org.springframework.test.util.ReflectionTestUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
 
 /**
  * Tests for {@link MetricsAutoConfiguration}.
  *
- * @author Stephane Nicoll
+ * @author Andy Wilkinson
  */
 public class MetricsAutoConfigurationTests {
 
-	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
-			.with(MetricsRun.simple());
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(MetricsAutoConfiguration.class));
 
 	@Test
-	public void autoConfiguredDataSourceIsInstrumented() {
-		this.contextRunner
-				.withConfiguration(
-						AutoConfigurations.of(DataSourceAutoConfiguration.class))
-				.withPropertyValues("spring.datasource.generate-unique-name=true")
-				.run((context) -> {
-					context.getBean(DataSource.class).getConnection().getMetaData();
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					registry.get("data.source.max.connections").tags("name", "dataSource")
-							.meter();
-				});
+	public void autoConfiguresAClock() {
+		this.runner.run((context) -> assertThat(context).hasSingleBean(Clock.class));
 	}
 
 	@Test
-	public void autoConfiguredDataSourceWithCustomMetricName() {
-		this.contextRunner
-				.withConfiguration(
-						AutoConfigurations.of(DataSourceAutoConfiguration.class))
-				.withPropertyValues("spring.datasource.generate-unique-name=true",
-						"management.metrics.jdbc.metric-name=custom.name")
-				.run((context) -> {
-					context.getBean(DataSource.class).getConnection().getMetaData();
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					registry.get("custom.name.max.connections").tags("name", "dataSource")
-							.meter();
-				});
+	public void allowsACustomClockToBeUsed() {
+		this.runner.withUserConfiguration(CustomClockConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(Clock.class)
+						.hasBean("customClock"));
 	}
 
 	@Test
-	public void dataSourceInstrumentationCanBeDisabled() {
-		this.contextRunner
-				.withConfiguration(
-						AutoConfigurations.of(DataSourceAutoConfiguration.class))
-				.withPropertyValues("spring.datasource.generate-unique-name=true",
-						"management.metrics.jdbc.instrument=false")
-				.run((context) -> {
-					context.getBean(DataSource.class).getConnection().getMetaData();
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					assertThat(registry.find("data.source.max.connections")
-							.tags("name", "dataSource").meter()).isNull();
+	public void autoConfiguresACompositeMeterRegistry() {
+		this.runner.run((context) -> {
+			assertThat(context).hasSingleBean(CompositeMeterRegistry.class);
+			assertThat(context.getBean(CompositeMeterRegistry.class).getRegistries())
+					.isEmpty();
 		});
 	}
 
+	@SuppressWarnings("unchecked")
 	@Test
-	public void allDataSourcesCanBeInstrumented() {
-		this.contextRunner.withUserConfiguration(TwoDataSourcesConfiguration.class)
-				.withConfiguration(
-						AutoConfigurations.of(DataSourceAutoConfiguration.class))
+	public void configuresMeterRegistries() {
+		this.runner.withUserConfiguration(MeterRegistryConfiguration.class)
 				.run((context) -> {
-					context.getBean("firstDataSource", DataSource.class).getConnection()
-							.getMetaData();
-					context.getBean("secondOne", DataSource.class).getConnection()
-							.getMetaData();
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					registry.get("data.source.max.connections").tags("name", "first")
-							.meter();
-					registry.get("data.source.max.connections").tags("name", "secondOne")
-							.meter();
+					MeterRegistry meterRegistry = context.getBean(MeterRegistry.class);
+					List<MeterFilter> filters = (List<MeterFilter>) ReflectionTestUtils
+							.getField(meterRegistry, "filters");
+					assertThat(filters).isNotEmpty();
+					verify((MeterBinder) context.getBean("meterBinder"))
+							.bindTo(meterRegistry);
+					verify(context.getBean(MeterRegistryCustomizer.class))
+							.customize(meterRegistry);
 				});
 	}
 
 	@Test
-	public void propertyBasedMeterFilter() {
-		this.contextRunner.withPropertyValues("management.metrics.enable.my.org=false")
-				.run((context) -> {
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					registry.timer("my.org.timer");
-					assertThat(registry.find("my.org.timer").timer()).isNull();
-				});
+	public void autoConfiguresJvmMetrics() {
+		this.runner.run((context) -> assertThat(context).hasSingleBean(JvmGcMetrics.class)
+				.hasSingleBean(JvmMemoryMetrics.class)
+				.hasSingleBean(JvmThreadMetrics.class));
 	}
 
-	/**
-	 * The simple registry is off by default UNLESS there is no other registry
-	 * implementation on the classpath, in which case it is on.
-	 */
 	@Test
-	public void simpleWithNoCompositeCreated() {
-		this.contextRunner
-				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
-						.isInstanceOf(SimpleMeterRegistry.class));
+	public void allowsJvmMetricsToBeDisabled() {
+		this.runner.withPropertyValues("management.metrics.binders.jvm.enabled=false")
+				.run((context) -> assertThat(context).doesNotHaveBean(JvmGcMetrics.class)
+						.doesNotHaveBean(JvmMemoryMetrics.class)
+						.doesNotHaveBean(JvmThreadMetrics.class));
 	}
 
-	/**
-	 * An empty composite is created in the absence of any other registry implementation.
-	 * This effectively no-ops instrumentation code throughout the application.
-	 */
 	@Test
-	public void emptyCompositeCreated() {
-		new ApplicationContextRunner().with(MetricsRun.limitedTo()).run((context) -> {
-			MeterRegistry registry = context.getBean(MeterRegistry.class);
-			assertThat(registry).isInstanceOf(CompositeMeterRegistry.class);
-			assertThat(((CompositeMeterRegistry) registry).getRegistries()).isEmpty();
-		});
+	public void allowsCustomJvmGcMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomJvmGcMetricsConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(JvmGcMetrics.class)
+						.hasBean("customJvmGcMetrics")
+						.hasSingleBean(JvmMemoryMetrics.class)
+						.hasSingleBean(JvmThreadMetrics.class));
 	}
 
 	@Test
-	public void noCompositeCreatedWhenSingleImplementationIsEnabled() {
-		new ApplicationContextRunner()
-				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class))
-				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
-						.isInstanceOf(GraphiteMeterRegistry.class));
+	public void allowsCustomJvmMemoryMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomJvmMemoryMetricsConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(JvmGcMetrics.class)
+						.hasSingleBean(JvmMemoryMetrics.class)
+						.hasBean("customJvmMemoryMetrics")
+						.hasSingleBean(JvmThreadMetrics.class));
 	}
 
 	@Test
-	public void noCompositeCreatedWhenMultipleRegistriesButOneMarkedAsPrimary() {
-		new ApplicationContextRunner()
-				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class,
-						JmxMetricsExportAutoConfiguration.class))
-				.withUserConfiguration(PrimarySimpleMeterRegistryConfiguration.class)
-				.run((context) -> assertThat(context.getBean(MeterRegistry.class))
-						.isInstanceOf(SimpleMeterRegistry.class));
+	public void allowsCustomJvmThreadMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomJvmThreadMetricsConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(JvmGcMetrics.class)
+						.hasSingleBean(JvmMemoryMetrics.class)
+						.hasSingleBean(JvmThreadMetrics.class)
+						.hasBean("customJvmThreadMetrics"));
 	}
 
 	@Test
-	public void compositeCreatedWhenMultipleImplementationsAreEnabled() {
-		new ApplicationContextRunner()
-				.with(MetricsRun.limitedTo(GraphiteMetricsExportAutoConfiguration.class,
-						JmxMetricsExportAutoConfiguration.class))
-				.run((context) -> {
-					MeterRegistry registry = context.getBean(MeterRegistry.class);
-					assertThat(registry).isInstanceOf(CompositeMeterRegistry.class);
-					assertThat(((CompositeMeterRegistry) registry).getRegistries())
-							.hasAtLeastOneElementOfType(GraphiteMeterRegistry.class)
-							.hasAtLeastOneElementOfType(JmxMeterRegistry.class);
-				});
+	public void autoConfiguresLogbackMetrics() {
+		this.runner.run(
+				(context) -> assertThat(context).hasSingleBean(LogbackMetrics.class));
 	}
 
 	@Test
-	public void autoConfiguresAClock() {
-		this.contextRunner.with(MetricsRun.limitedTo())
-				.run((context) -> assertThat(context).hasSingleBean(Clock.class));
+	public void allowsLogbackMetricsToBeDisabled() {
+		this.runner.withPropertyValues("management.metrics.binders.logback.enabled=false")
+				.run((context) -> assertThat(context)
+						.doesNotHaveBean(LogbackMetrics.class));
 	}
 
 	@Test
-	public void allowsCustomClockToBeConfigured() {
-		this.contextRunner.with(MetricsRun.limitedTo())
-				.withUserConfiguration(CustomClockConfiguration.class)
-				.run((context) -> assertThat(context).hasSingleBean(Clock.class)
-						.hasBean("customClock"));
+	public void allowsCustomLogbackMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomLogbackMetricsConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(LogbackMetrics.class)
+						.hasBean("customLogbackMetrics"));
+	}
+
+	@Test
+	public void autoConfiguresUptimeMetrics() {
+		this.runner
+				.run((context) -> assertThat(context).hasSingleBean(UptimeMetrics.class));
+	}
+
+	@Test
+	public void allowsUptimeMetricsToBeDisabled() {
+		this.runner.withPropertyValues("management.metrics.binders.uptime.enabled=false")
+				.run((context) -> assertThat(context)
+						.doesNotHaveBean(UptimeMetrics.class));
+	}
+
+	@Test
+	public void allowsCustomUptimeMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomUptimeMetricsConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(UptimeMetrics.class)
+						.hasBean("customUptimeMetrics"));
+	}
+
+	@Test
+	public void autoConfiguresProcessorMetrics() {
+		this.runner.run(
+				(context) -> assertThat(context).hasSingleBean(ProcessorMetrics.class));
+	}
+
+	@Test
+	public void allowsProcessorMetricsToBeDisabled() {
+		this.runner
+				.withPropertyValues("management.metrics.binders.processor.enabled=false")
+				.run((context) -> assertThat(context)
+						.doesNotHaveBean(ProcessorMetrics.class));
+	}
+
+	@Test
+	public void allowsCustomProcessorMetricsToBeUsed() {
+		this.runner.withUserConfiguration(CustomProcessorMetricsConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(ProcessorMetrics.class)
+						.hasBean("customProcessorMetrics"));
+	}
+
+	@Test
+	public void autoConfiguresSpringIntegrationMetrics() {
+		this.runner.run((context) -> assertThat(context)
+				.hasSingleBean(SpringIntegrationMetrics.class));
+	}
+
+	@Test
+	public void allowsSpringIntegrationMetricsToBeDisabled() {
+		this.runner
+				.withPropertyValues(
+						"management.metrics.binders.integration.enabled=false")
+				.run((context) -> assertThat(context)
+						.doesNotHaveBean(SpringIntegrationMetrics.class));
+	}
+
+	@Test
+	public void allowsCustomSpringIntegrationMetricsToBeUsed() {
+		this.runner
+				.withUserConfiguration(CustomSpringIntegrationMetricsConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(SpringIntegrationMetrics.class)
+						.hasBean("customSpringIntegrationMetrics"));
 	}
 
 	@Configuration
-	static class PrimarySimpleMeterRegistryConfiguration {
+	static class CustomClockConfiguration {
 
-		@Primary
 		@Bean
-		public MeterRegistry simpleMeterRegistry() {
-			return new SimpleMeterRegistry(SimpleConfig.DEFAULT, new MockClock());
+		Clock customClock() {
+			return Clock.SYSTEM;
 		}
 
 	}
 
 	@Configuration
-	static class TwoDataSourcesConfiguration {
+	static class MeterRegistryConfiguration {
 
 		@Bean
-		public DataSource firstDataSource() {
-			return createDataSource();
+		MeterRegistry meterRegistry() {
+			SimpleMeterRegistry meterRegistry = new SimpleMeterRegistry();
+			return spy(meterRegistry);
 		}
 
 		@Bean
-		public DataSource secondOne() {
-			return createDataSource();
+		@SuppressWarnings("rawtypes")
+		MeterRegistryCustomizer meterRegistryCustomizer() {
+			return mock(MeterRegistryCustomizer.class);
 		}
 
-		private DataSource createDataSource() {
-			String url = "jdbc:hsqldb:mem:test-" + UUID.randomUUID();
-			return DataSourceBuilder.create().url(url).build();
+		@Bean
+		MeterBinder meterBinder() {
+			return mock(MeterBinder.class);
 		}
 
 	}
 
 	@Configuration
-	static class CustomClockConfiguration {
+	static class CustomJvmGcMetricsConfiguration {
 
 		@Bean
-		public Clock customClock() {
-			return Clock.SYSTEM;
+		JvmGcMetrics customJvmGcMetrics() {
+			return new JvmGcMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomJvmMemoryMetricsConfiguration {
+
+		@Bean
+		JvmMemoryMetrics customJvmMemoryMetrics() {
+			return new JvmMemoryMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomJvmThreadMetricsConfiguration {
+
+		@Bean
+		JvmThreadMetrics customJvmThreadMetrics() {
+			return new JvmThreadMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomLogbackMetricsConfiguration {
+
+		@Bean
+		LogbackMetrics customLogbackMetrics() {
+			return new LogbackMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomUptimeMetricsConfiguration {
+
+		@Bean
+		UptimeMetrics customUptimeMetrics() {
+			return new UptimeMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomProcessorMetricsConfiguration {
+
+		@Bean
+		ProcessorMetrics customProcessorMetrics() {
+			return new ProcessorMetrics();
+		}
+
+	}
+
+	@Configuration
+	static class CustomSpringIntegrationMetricsConfiguration {
+
+		@Bean
+		SpringIntegrationMetrics customSpringIntegrationMetrics(
+				IntegrationManagementConfigurer configurer) {
+			return new SpringIntegrationMetrics(configurer);
 		}
 
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/atlas/AtlasMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.atlas;
+
+import com.netflix.spectator.atlas.AtlasConfig;
+import io.micrometer.atlas.AtlasMeterRegistry;
+import io.micrometer.core.instrument.Clock;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link AtlasMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class AtlasMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(AtlasMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(AtlasMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(AtlasMeterRegistry.class)
+						.hasSingleBean(AtlasConfig.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(AtlasMeterRegistry.class)
+						.hasSingleBean(AtlasConfig.class).hasBean("customConfig"));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(AtlasMeterRegistry.class).hasBean("customRegistry")
+						.hasSingleBean(AtlasConfig.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public AtlasConfig customConfig() {
+			return new AtlasConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public AtlasMeterRegistry customRegistry(AtlasConfig config, Clock clock) {
+			return new AtlasMeterRegistry(config, clock);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/datadog/DatadogMetricsExportAutoConfigurationTests.java

@@ -30,7 +30,7 @@ import org.springframework.context.annotation.Import;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@link DatadogMetricsExportAutoConfiguration}
+ * Tests for {@link DatadogMetricsExportAutoConfiguration}.
  *
  * @author Andy Wilkinson
  */
@@ -53,7 +53,7 @@ public class DatadogMetricsExportAutoConfigurationTests {
 	}
 
 	@Test
-	public void autoConfiguresItsConfigAndMeterRegistry() {
+	public void autoConfiguresConfigAndMeterRegistry() {
 		this.runner.withUserConfiguration(BaseConfiguration.class)
 				.withPropertyValues("management.metrics.export.datadog.api-key=abcde")
 				.run((context) -> assertThat(context)

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/ganglia/GangliaMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.ganglia;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.ganglia.GangliaConfig;
+import io.micrometer.ganglia.GangliaMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link GangliaMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class GangliaMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(GangliaMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(GangliaMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GangliaMeterRegistry.class)
+						.hasSingleBean(GangliaConfig.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GangliaMeterRegistry.class)
+						.hasSingleBean(GangliaConfig.class).hasBean("customConfig"));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GangliaMeterRegistry.class)
+						.hasBean("customRegistry").hasSingleBean(GangliaConfig.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public GangliaConfig customConfig() {
+			return new GangliaConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public GangliaMeterRegistry customRegistry(GangliaConfig config, Clock clock) {
+			return new GangliaMeterRegistry(config, clock);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/graphite/GraphiteMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.graphite;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.graphite.GraphiteConfig;
+import io.micrometer.graphite.GraphiteMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link GraphiteMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class GraphiteMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(GraphiteMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(GraphiteMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GraphiteMeterRegistry.class)
+						.hasSingleBean(GraphiteConfig.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GraphiteMeterRegistry.class)
+						.hasSingleBean(GraphiteConfig.class).hasBean("customConfig"));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(GraphiteMeterRegistry.class)
+						.hasBean("customRegistry").hasSingleBean(GraphiteConfig.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public GraphiteConfig customConfig() {
+			return new GraphiteConfig() {
+
+				@Override
+				public String get(String k) {
+					if ("Graphite.apiKey".equals(k)) {
+						return "12345";
+					}
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public GraphiteMeterRegistry customRegistry(GraphiteConfig config, Clock clock) {
+			return new GraphiteMeterRegistry(config, clock);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/influx/InfluxMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.influx;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.influx.InfluxConfig;
+import io.micrometer.influx.InfluxMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link InfluxMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class InfluxMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(InfluxMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(InfluxMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(InfluxMeterRegistry.class)
+						.hasSingleBean(InfluxConfig.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(InfluxMeterRegistry.class)
+						.hasSingleBean(InfluxConfig.class).hasBean("customConfig"));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(InfluxMeterRegistry.class)
+						.hasBean("customRegistry").hasSingleBean(InfluxConfig.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public InfluxConfig customConfig() {
+			return new InfluxConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public InfluxMeterRegistry customRegistry(InfluxConfig config, Clock clock) {
+			return new InfluxMeterRegistry(config, clock);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/jmx/JmxMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.jmx;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.core.instrument.Meter.Id;
+import io.micrometer.core.instrument.config.NamingConvention;
+import io.micrometer.core.instrument.util.HierarchicalNameMapper;
+import io.micrometer.jmx.JmxConfig;
+import io.micrometer.jmx.JmxMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link JmxMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class JmxMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(JmxMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run(
+				(context) -> assertThat(context).doesNotHaveBean(JmxMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigMeterRegistryAndNameMapper() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(JmxMeterRegistry.class)
+						.hasSingleBean(JmxConfig.class)
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(JmxMeterRegistry.class)
+						.hasSingleBean(JmxConfig.class).hasBean("customConfig")
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(JmxMeterRegistry.class).hasBean("customRegistry")
+						.hasSingleBean(JmxConfig.class)
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomHierarchicalNameMapperToBeUsed() {
+		this.runner.withUserConfiguration(CustomNameMapperConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(JmxMeterRegistry.class)
+						.hasSingleBean(JmxConfig.class).hasBean("customNameMapper")
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public JmxConfig customConfig() {
+			return new JmxConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public JmxMeterRegistry customRegistry(JmxConfig config, Clock clock) {
+			return new JmxMeterRegistry(config, clock);
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomNameMapperConfiguration {
+
+		@Bean
+		public HierarchicalNameMapper customNameMapper() {
+			return new HierarchicalNameMapper() {
+
+				@Override
+				public String toHierarchicalName(Id id, NamingConvention convention) {
+					return "test";
+				}
+
+			};
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.prometheus.PrometheusConfig;
+import io.micrometer.prometheus.PrometheusMeterRegistry;
+import io.prometheus.client.CollectorRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.actuate.autoconfigure.web.server.ManagementContextAutoConfiguration;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusScrapeEndpoint;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link PrometheusMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class PrometheusMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations
+					.of(PrometheusMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(PrometheusMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigCollectorRegistryAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(PrometheusMeterRegistry.class)
+						.hasSingleBean(CollectorRegistry.class)
+						.hasSingleBean(PrometheusConfig.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(PrometheusMeterRegistry.class)
+						.hasSingleBean(CollectorRegistry.class)
+						.hasSingleBean(PrometheusConfig.class).hasBean("customConfig"));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(PrometheusMeterRegistry.class)
+						.hasBean("customRegistry").hasSingleBean(CollectorRegistry.class)
+						.hasSingleBean(PrometheusConfig.class));
+	}
+
+	@Test
+	public void allowsCustomCollectorRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomCollectorRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(PrometheusMeterRegistry.class)
+						.hasBean("customCollectorRegistry")
+						.hasSingleBean(CollectorRegistry.class)
+						.hasSingleBean(PrometheusConfig.class));
+	}
+
+	@Test
+	public void addsScrapeEndpointToManagementContext() {
+		this.runner
+				.withConfiguration(
+						AutoConfigurations.of(ManagementContextAutoConfiguration.class))
+				.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(PrometheusScrapeEndpoint.class));
+	}
+
+	@Test
+	public void scrapeEndpointCanBeDisabled() {
+		this.runner
+				.withConfiguration(
+						AutoConfigurations.of(ManagementContextAutoConfiguration.class))
+				.withPropertyValues("management.endpoint.prometheus.enabled=false")
+				.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.doesNotHaveBean(PrometheusScrapeEndpoint.class));
+	}
+
+	@Test
+	public void allowsCustomScrapeEndpointToBeUsed() {
+		this.runner
+				.withConfiguration(
+						AutoConfigurations.of(ManagementContextAutoConfiguration.class))
+				.withUserConfiguration(CustomEndpointConfiguration.class)
+				.run((context) -> assertThat(context).hasBean("customEndpoint")
+						.hasSingleBean(PrometheusScrapeEndpoint.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public PrometheusConfig customConfig() {
+			return new PrometheusConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public PrometheusMeterRegistry customRegistry(PrometheusConfig config,
+				CollectorRegistry collectorRegistry, Clock clock) {
+			return new PrometheusMeterRegistry(config, collectorRegistry, clock);
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomCollectorRegistryConfiguration {
+
+		@Bean
+		public CollectorRegistry customCollectorRegistry() {
+			return new CollectorRegistry();
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomEndpointConfiguration {
+
+		@Bean
+		public PrometheusScrapeEndpoint customEndpoint(
+				CollectorRegistry collectorRegistry) {
+			return new PrometheusScrapeEndpoint(collectorRegistry);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/simple/SimplMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.simple;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.simple.SimpleConfig;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+/**
+ *
+ * Tests for {@link SimpleMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class SimplMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(SimpleMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void autoConfiguresConfigAndMeterRegistry() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(SimpleMeterRegistry.class)
+						.hasSingleBean(Clock.class).hasSingleBean(SimpleConfig.class));
+	}
+
+	@Test
+	public void allowsConfigToBeCustomized() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(SimpleConfig.class)
+						.hasBean("customConfig"));
+	}
+
+	@Test
+	public void backsOffEntirelyWithCustomMeterRegistry() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context).hasSingleBean(MeterRegistry.class)
+						.hasBean("customRegistry").doesNotHaveBean(SimpleConfig.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public SimpleConfig customConfig() {
+			return new SimpleConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public MeterRegistry customRegistry() {
+			return mock(MeterRegistry.class);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/statsd/StatsdMetricsExportAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.export.statsd;
+
+import io.micrometer.core.instrument.Clock;
+import io.micrometer.core.instrument.Meter.Id;
+import io.micrometer.core.instrument.config.NamingConvention;
+import io.micrometer.core.instrument.util.HierarchicalNameMapper;
+import io.micrometer.statsd.StatsdConfig;
+import io.micrometer.statsd.StatsdMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link StatsdMetricsExportAutoConfiguration}.
+ *
+ * @author Andy Wilkinson
+ */
+public class StatsdMetricsExportAutoConfigurationTests {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(StatsdMetricsExportAutoConfiguration.class));
+
+	@Test
+	public void backsOffWithoutAClock() {
+		this.runner.run((context) -> assertThat(context)
+				.doesNotHaveBean(StatsdMeterRegistry.class));
+	}
+
+	@Test
+	public void autoConfiguresItsConfigMeterRegistryAndNameMapper() {
+		this.runner.withUserConfiguration(BaseConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(StatsdMeterRegistry.class)
+						.hasSingleBean(StatsdConfig.class)
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomConfigToBeUsed() {
+		this.runner.withUserConfiguration(CustomConfigConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(StatsdMeterRegistry.class)
+						.hasSingleBean(StatsdConfig.class).hasBean("customConfig")
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomRegistryToBeUsed() {
+		this.runner.withUserConfiguration(CustomRegistryConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(StatsdMeterRegistry.class)
+						.hasBean("customRegistry").hasSingleBean(StatsdConfig.class)
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Test
+	public void allowsCustomHierarchicalNameMapperToBeUsed() {
+		this.runner.withUserConfiguration(CustomNameMapperConfiguration.class)
+				.run((context) -> assertThat(context)
+						.hasSingleBean(StatsdMeterRegistry.class)
+						.hasSingleBean(StatsdConfig.class).hasBean("customNameMapper")
+						.hasSingleBean(HierarchicalNameMapper.class));
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public Clock clock() {
+			return Clock.SYSTEM;
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomConfigConfiguration {
+
+		@Bean
+		public StatsdConfig customConfig() {
+			return new StatsdConfig() {
+
+				@Override
+				public String get(String k) {
+					return null;
+				}
+
+			};
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomRegistryConfiguration {
+
+		@Bean
+		public StatsdMeterRegistry customRegistry(StatsdConfig config, Clock clock) {
+			return new StatsdMeterRegistry(config, clock);
+		}
+
+	}
+
+	@Configuration
+	@Import(BaseConfiguration.class)
+	static class CustomNameMapperConfiguration {
+
+		@Bean
+		public HierarchicalNameMapper customNameMapper() {
+			return new HierarchicalNameMapper() {
+
+				@Override
+				public String toHierarchicalName(Id id, NamingConvention convention) {
+					return "test";
+				}
+
+			};
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/jdbc/DataSourcePoolMetricsAutoConfigurationTests.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.jdbc;
+
+import java.util.UUID;
+
+import javax.sql.DataSource;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import org.junit.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link DataSourcePoolMetricsAutoConfiguration}.
+ *
+ * @author Stephane Nicoll
+ * @author Andy Wilkinson
+ */
+public class DataSourcePoolMetricsAutoConfigurationTests {
+
+	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(DataSourcePoolMetricsAutoConfiguration.class))
+			.withUserConfiguration(BaseConfiguration.class);
+
+	@Test
+	public void autoConfiguredDataSourceIsInstrumented() {
+		this.contextRunner
+				.withConfiguration(
+						AutoConfigurations.of(DataSourceAutoConfiguration.class))
+				.withPropertyValues("spring.datasource.generate-unique-name=true")
+				.run((context) -> {
+					context.getBean(DataSource.class).getConnection().getMetaData();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					registry.get("data.source.max.connections").tags("name", "dataSource")
+							.meter();
+				});
+	}
+
+	@Test
+	public void autoConfiguredDataSourceWithCustomMetricName() {
+		this.contextRunner
+				.withConfiguration(
+						AutoConfigurations.of(DataSourceAutoConfiguration.class))
+				.withPropertyValues("spring.datasource.generate-unique-name=true",
+						"management.metrics.jdbc.metric-name=custom.name")
+				.run((context) -> {
+					context.getBean(DataSource.class).getConnection().getMetaData();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					registry.get("custom.name.max.connections").tags("name", "dataSource")
+							.meter();
+				});
+	}
+
+	@Test
+	public void dataSourceInstrumentationCanBeDisabled() {
+		this.contextRunner
+				.withConfiguration(
+						AutoConfigurations.of(DataSourceAutoConfiguration.class))
+				.withPropertyValues("spring.datasource.generate-unique-name=true",
+						"management.metrics.jdbc.instrument=false")
+				.run((context) -> {
+					context.getBean(DataSource.class).getConnection().getMetaData();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					assertThat(registry.find("data.source.max.connections")
+							.tags("name", "dataSource").meter()).isNull();
+				});
+	}
+
+	@Test
+	public void allDataSourcesCanBeInstrumented() {
+		this.contextRunner.withUserConfiguration(TwoDataSourcesConfiguration.class)
+				.withConfiguration(
+						AutoConfigurations.of(DataSourceAutoConfiguration.class))
+				.run((context) -> {
+					context.getBean("firstDataSource", DataSource.class).getConnection()
+							.getMetaData();
+					context.getBean("secondOne", DataSource.class).getConnection()
+							.getMetaData();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					registry.get("data.source.max.connections").tags("name", "first")
+							.meter();
+					registry.get("data.source.max.connections").tags("name", "secondOne")
+							.meter();
+				});
+	}
+
+	@Configuration
+	static class BaseConfiguration {
+
+		@Bean
+		public SimpleMeterRegistry simpleMeterRegistry() {
+			return new SimpleMeterRegistry();
+		}
+
+	}
+
+	@Configuration
+	static class TwoDataSourcesConfiguration {
+
+		@Bean
+		public DataSource firstDataSource() {
+			return createDataSource();
+		}
+
+		@Bean
+		public DataSource secondOne() {
+			return createDataSource();
+		}
+
+		private DataSource createDataSource() {
+			String url = "jdbc:hsqldb:mem:test-" + UUID.randomUUID();
+			return DataSourceBuilder.create().url(url).build();
+		}
+
+	}
+
+}

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

@@ -30,7 +30,9 @@ import org.springframework.boot.actuate.autoconfigure.metrics.export.ganglia.Gan
 import org.springframework.boot.actuate.autoconfigure.metrics.export.graphite.GraphiteMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.influx.InfluxMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.jmx.JmxMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.export.newrelic.NewRelicMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus.PrometheusMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.export.signalfx.SignalFxMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.export.statsd.StatsdMetricsExportAutoConfiguration;
 import org.springframework.boot.actuate.autoconfigure.metrics.jdbc.DataSourcePoolMetricsAutoConfiguration;
@@ -60,8 +62,10 @@ public final class MetricsRun {
 		implementations.add(GraphiteMetricsExportAutoConfiguration.class);
 		implementations.add(InfluxMetricsExportAutoConfiguration.class);
 		implementations.add(JmxMetricsExportAutoConfiguration.class);
+		implementations.add(NewRelicMetricsExportAutoConfiguration.class);
 		implementations.add(PrometheusMetricsExportAutoConfiguration.class);
 		implementations.add(SimpleMetricsExportAutoConfiguration.class);
+		implementations.add(SignalFxMetricsExportAutoConfiguration.class);
 		implementations.add(StatsdMetricsExportAutoConfiguration.class);
 		EXPORT_AUTO_CONFIGURATIONS = Collections.unmodifiableSet(implementations);
 	}

spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -1242,7 +1242,7 @@ content into your application. Rather, pick only the properties that you need.
 
 	# PROMETHEUS ENDPOINT ({sc-spring-boot-actuator}/metrics/export/prometheus/PrometheusScrapeEndpoint.{sc-ext}[PrometheusScrapeEndpoint])
 	management.endpoint.prometheus.cache.time-to-live=0ms # Maximum time that a response can be cached.
-	management.endpoint.prometheus.enabled= # Whether to enable the metrics endpoint.
+	management.endpoint.prometheus.enabled= # Whether to enable the Prometheus endpoint.
 
 	# SCHEDULED TASKS ENDPOINT ({sc-spring-boot-actuator}/scheduling/ScheduledTasksEndpoint.{sc-ext}[ScheduledTasksEndpoint])
 	management.endpoint.scheduledtasks.cache.time-to-live=0ms # Maximum time that a response can be cached.
@@ -1295,6 +1295,7 @@ content into your application. Rather, pick only the properties that you need.
 	management.info.git.mode=simple # Mode to use to expose git information.
 
 	# METRICS
+	management.metrics.binders.integration.enabled=true # Whether to enable Spring Integration metrics.
 	management.metrics.binders.jvm.enabled=true # Whether to enable JVM metrics.
 	management.metrics.binders.logback.enabled=true # Whether to enable Logback metrics.
 	management.metrics.binders.processor.enabled=true # Whether to enable processor metrics.