Create execution time measurement aspect

engine/build.gradle

@@ -76,6 +76,7 @@ dependencies {
 
     // Spring
     implementation 'org.springframework.boot:spring-boot-starter'
+    implementation 'org.springframework.boot:spring-boot-starter-aop'
     compileOnly 'org.projectlombok:lombok'
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'

engine/src/main/java/com/bartlomiejpluta/base/core/profiling/fps/FPSMonitor.java

@@ -1,4 +1,4 @@
-package com.bartlomiejpluta.base.core.stat;
+package com.bartlomiejpluta.base.core.profiling.fps;
 
 import com.bartlomiejpluta.base.core.gc.Cleanable;
 import com.bartlomiejpluta.base.core.logic.Updatable;

engine/src/main/java/com/bartlomiejpluta/base/core/profiling/fps/LogFPSMonitor.java

@@ -1,4 +1,4 @@
-package com.bartlomiejpluta.base.core.stat;
+package com.bartlomiejpluta.base.core.profiling.fps;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;

engine/src/main/java/com/bartlomiejpluta/base/core/profiling/time/annotation/MeasureExecutionTime.java

@@ -0,0 +1,11 @@
+package com.bartlomiejpluta.base.core.profiling.time.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface MeasureExecutionTime {
+}

engine/src/main/java/com/bartlomiejpluta/base/core/profiling/time/aspect/ExecutionTimeAspect.java

@@ -0,0 +1,38 @@
+package com.bartlomiejpluta.base.core.profiling.time.aspect;
+
+import lombok.extern.slf4j.Slf4j;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Aspect
+@Component
+@ConditionalOnExpression("${app.profiling.aspects:false}")
+public class ExecutionTimeAspect {
+
+   @Around("@annotation(com.bartlomiejpluta.base.core.stat.metrics.annotation.MeasureExecutionTime)")
+   public Object measureExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
+      long start = 0;
+      long end = 0;
+      long elapsed;
+      Object result;
+      try {
+         start = System.nanoTime();
+         result = joinPoint.proceed();
+      } finally {
+         end = System.nanoTime();
+      }
+
+      elapsed = end - start;
+      log.debug("[{}.{}] = [{}s] [{}ms] [{}ns]",
+              joinPoint.getTarget().getClass().getSimpleName(),
+              joinPoint.getSignature().getName(),
+              elapsed / 1000000.0, elapsed / 1000.0, elapsed
+      );
+
+      return result;
+   }
+}