Adding Metrics AspectJ article code changes (#7387)

* Adding Metrics AspectJ article code changes

* BAEL-3050 - Changes required by the code review in the PR

* BAEL-3050 - Small fixes

* fixed a { in the wrong place

metrics/pom.xml

@@ -86,6 +86,24 @@
             <version>${spectator-api.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>io.astefanutti.metrics.aspectj</groupId>
+            <artifactId>metrics-aspectj</artifactId>
+            <version>${metrics-aspectj.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.slf4j</groupId>
+                    <artifactId>slf4j-api</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
+        <dependency>
+            <groupId>io.astefanutti.metrics.aspectj</groupId>
+            <artifactId>metrics-aspectj-deps</artifactId>
+            <version>${metrics-aspectj.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
@@ -104,6 +122,7 @@
         <spectator-api.version>0.57.1</spectator-api.version>
 		<spring-boot-starter-web.version>2.0.7.RELEASE</spring-boot-starter-web.version>
 		<assertj-core.version>3.11.1</assertj-core.version>
+        <metrics-aspectj.version>1.1.0</metrics-aspectj.version>
     </properties>
 
 </project>

metrics/src/main/java/com/baeldung/metrics/aspectj/MetricsAspectJMain.java

@@ -0,0 +1,34 @@
+package com.baeldung.metrics.aspectj;
+
+import com.codahale.metrics.ConsoleReporter;
+import com.codahale.metrics.MetricRegistry;
+import com.codahale.metrics.SharedMetricRegistries;
+import java.io.PrintStream;
+import java.util.concurrent.TimeUnit;
+
+public class MetricsAspectJMain {
+    private static final MetricRegistry REGISTRY = new MetricRegistry();
+
+    public static void main(String args[]) throws InterruptedException {
+        startReport();
+
+        ObjectRunner runner = new ObjectRunner();
+
+        for (int i = 0; i < 5; i++) {
+            runner.run();
+        }
+
+        Thread.sleep(3000L);
+    }
+
+    private static void startReport() {
+        SharedMetricRegistries.add(ObjectRunner.REGISTRY_NAME, REGISTRY);
+
+        ConsoleReporter.forRegistry(REGISTRY)
+                .convertRatesTo(TimeUnit.SECONDS)
+                .convertDurationsTo(TimeUnit.MILLISECONDS)
+                .outputTo(new PrintStream(System.out))
+                .build()
+                .start(3, TimeUnit.SECONDS);
+    }
+}

metrics/src/main/java/com/baeldung/metrics/aspectj/ObjectRunner.java

@@ -0,0 +1,22 @@
+package com.baeldung.metrics.aspectj;
+
+import com.codahale.metrics.annotation.Timed;
+import io.astefanutti.metrics.aspectj.Metrics;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@Metrics( registry = ObjectRunner.REGISTRY_NAME)
+public class ObjectRunner {
+
+    private static final Logger logger = LoggerFactory.getLogger(ObjectRunner.class);
+    public static final String REGISTRY_NAME = "ObjectRunner";
+
+    @Timed(name = "timerName")
+    public void run() {
+        logger.info("run");
+        try {
+            Thread.sleep(1000L);
+        } catch (InterruptedException e) {
+        }
+    }
+}