dubbo metrics to springboot endpoints (#10997)

dubbo-metrics/dubbo-metrics-api/src/main/java/org/apache/dubbo/metrics/AbstractMetricsReporter.java

@@ -89,6 +89,12 @@ public abstract class AbstractMetricsReporter implements MetricsReporter {
     protected void addMeterRegistry(MeterRegistry registry) {
         compositeRegistry.add(registry);
     }
+    private void addDubboMeterRegistry(){
+        MeterRegistry globalRegistry = DubboMetrics.globalRegistry;
+        if(globalRegistry != null){
+            compositeRegistry.add(globalRegistry);
+        }
+    }
 
     protected ApplicationModel getApplicationModel() {
         return applicationModel;

dubbo-metrics/dubbo-metrics-api/src/main/java/org/apache/dubbo/metrics/DubboMetrics.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.dubbo.metrics;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.binder.MeterBinder;
+
+
+public class DubboMetrics implements MeterBinder {
+
+    protected static volatile  MeterRegistry globalRegistry = null;
+    @Override
+    public void bindTo(MeterRegistry registry) {
+        this.globalRegistry = registry;
+    }
+
+    public void destroy() {
+    }
+}
+

dubbo-spring-boot/dubbo-spring-boot-actuator/pom.xml

@@ -145,6 +145,11 @@
             <artifactId>junit-platform-runner</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-metrics-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
 
     </dependencies>
 

dubbo-spring-boot/dubbo-spring-boot-actuator/src/main/java/org/apache/dubbo/spring/boot/actuate/autoconfigure/DubboMetricsAutoConfiguration.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.dubbo.spring.boot.actuate.autoconfigure;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import org.apache.dubbo.metrics.DubboMetrics;
+import org.apache.dubbo.spring.boot.actuate.mertics.DubboMetricsBinder;
+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.condition.ConditionalOnWebApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+
+
+@Configuration(
+    proxyBeanMethods = false
+)
+@ConditionalOnWebApplication
+@ConditionalOnClass({DubboMetrics.class})
+public class DubboMetricsAutoConfiguration {
+    @Bean
+    @ConditionalOnBean({MeterRegistry.class})
+    @ConditionalOnMissingBean({DubboMetrics.class, DubboMetricsBinder.class})
+    public DubboMetricsBinder tomcatMetricsBinder(MeterRegistry meterRegistry) {
+        return new DubboMetricsBinder(meterRegistry);
+    }
+}

dubbo-spring-boot/dubbo-spring-boot-actuator/src/main/java/org/apache/dubbo/spring/boot/actuate/mertics/DubboMetricsBinder.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.dubbo.spring.boot.actuate.mertics;
+
+import org.apache.dubbo.metrics.DubboMetrics;
+import io.micrometer.core.instrument.MeterRegistry;
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.boot.context.event.ApplicationStartedEvent;
+import org.springframework.context.ApplicationListener;
+
+
+public class DubboMetricsBinder implements ApplicationListener<ApplicationStartedEvent>, DisposableBean {
+    private final MeterRegistry meterRegistry;
+    private volatile DubboMetrics dubboMetrics;
+
+    public DubboMetricsBinder(MeterRegistry meterRegistry) {
+        this.meterRegistry = meterRegistry;
+    }
+
+
+    @Override
+    public void onApplicationEvent(ApplicationStartedEvent applicationStartedEvent) {
+         dubboMetrics = new DubboMetrics();
+         dubboMetrics.bindTo(meterRegistry);
+    }
+
+    @Override
+    public void destroy() throws Exception {
+        dubboMetrics.destroy();
+    }
+}

dubbo-spring-boot/dubbo-spring-boot-actuator/src/main/resources/META-INF/spring.factories

@@ -1,2 +1,3 @@
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
-org.apache.dubbo.spring.boot.actuate.autoconfigure.DubboEndpointAnnotationAutoConfiguration
+org.apache.dubbo.spring.boot.actuate.autoconfigure.DubboEndpointAnnotationAutoConfiguration,\
+org.apache.dubbo.spring.boot.actuate.autoconfigure.DubboMetricsAutoConfiguration