Add @ActuatorMetricRepository to qualify the "native" repository

Primarily when it is needed for metric export.

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/ActuatorMetricRepository.java

+/*
+ * Copyright 2012-2015 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;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+
+/**
+ * Qualifier annotation for a metric repository that is used by the actuator (to
+ * distinguish it from others that might be installed by the user).
+ *
+ * @author Dave Syer
+ */
+@Qualifier
+@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.TYPE,
+		ElementType.ANNOTATION_TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+@Documented
+public @interface ActuatorMetricRepository {
+
+}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/MetricRepositoryAutoConfiguration.java

@@ -21,7 +21,6 @@ import java.util.HashMap;
 import java.util.Map;
 
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.actuate.metrics.CounterService;
 import org.springframework.boot.actuate.metrics.GaugeService;
 import org.springframework.boot.actuate.metrics.buffer.BufferCounterService;
@@ -48,7 +47,6 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Primary;
 import org.springframework.messaging.MessageChannel;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
@@ -96,10 +94,11 @@ public class MetricRepositoryAutoConfiguration {
 
 	@Configuration
 	@ConditionalOnJava(value = JavaVersion.EIGHT, range = Range.OLDER_THAN)
-	@ConditionalOnMissingBean(MetricRepository.class)
+	@ConditionalOnMissingBean(GaugeService.class)
 	static class LegacyMetricServicesConfiguration {
 
 		@Autowired
+		@ActuatorMetricRepository
 		private MetricWriter writer;
 
 		@Bean
@@ -118,7 +117,7 @@ public class MetricRepositoryAutoConfiguration {
 
 	@Configuration
 	@ConditionalOnJava(value = JavaVersion.EIGHT)
-	@ConditionalOnMissingBean(MetricRepository.class)
+	@ConditionalOnMissingBean(GaugeService.class)
 	static class FastMetricServicesConfiguration {
 
 		@Bean
@@ -134,9 +133,9 @@ public class MetricRepositoryAutoConfiguration {
 		}
 
 		@Bean
-		@Primary
+		@ActuatorMetricRepository
 		@ConditionalOnMissingBean
-		public BufferMetricReader metricReader(CounterBuffers counters,
+		public BufferMetricReader actuatorMetricReader(CounterBuffers counters,
 				GaugeBuffers gauges) {
 			return new BufferMetricReader(counters, gauges);
 		}
@@ -160,7 +159,7 @@ public class MetricRepositoryAutoConfiguration {
 	static class LegacyMetricRepositoryConfiguration {
 
 		@Bean
-		@Primary
+		@ActuatorMetricRepository
 		public InMemoryMetricRepository actuatorMetricRepository() {
 			return new InMemoryMetricRepository();
 		}
@@ -179,12 +178,13 @@ public class MetricRepositoryAutoConfiguration {
 		private MetricExportProperties metrics;
 
 		@Autowired(required = false)
-		@Qualifier("actuatorMetricRepository")
+		@ActuatorMetricRepository
 		private MetricWriter actuatorMetricRepository;
 
 		@Bean
 		@ConditionalOnMissingBean
-		public MetricExporters metricWritersMetricExporter(MetricReader reader) {
+		public MetricExporters metricWritersMetricExporter(
+				@ActuatorMetricRepository MetricReader reader) {
 			Map<String, MetricWriter> writers = new HashMap<String, MetricWriter>(
 					this.writers);
 			if (this.actuatorMetricRepository != null

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/PublicMetricsAutoConfiguration.java

@@ -60,6 +60,7 @@ import org.springframework.context.annotation.Configuration;
 public class PublicMetricsAutoConfiguration {
 
 	@Autowired(required = false)
+	@ActuatorMetricRepository
 	private MetricReader metricReader = new InMemoryMetricRepository();
 
 	@Bean

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/MetricsEndpoint.java

@@ -62,8 +62,13 @@ public class MetricsEndpoint extends AbstractEndpoint<Map<String, Object>> {
 	public Map<String, Object> invoke() {
 		Map<String, Object> result = new LinkedHashMap<String, Object>();
 		for (PublicMetrics publicMetric : this.publicMetrics) {
-			for (Metric<?> metric : publicMetric.metrics()) {
-				result.put(metric.getName(), metric.getValue());
+			try {
+				for (Metric<?> metric : publicMetric.metrics()) {
+					result.put(metric.getName(), metric.getValue());
+				}
+			}
+			catch (Exception e) {
+				// Could not evaluate metrics
 			}
 		}
 		return result;

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/resources/application.properties

 service.name: Phil
 redis.metrics.export.prefix: metrics.sample.${random.value:0000}.${spring.application.name:application}
 redis.metrics.export.key: keys.metrics.sample
+spring.jmx.default-domain: org.springframework.boot