Github user martin-g commented on a diff in the pull request:
https://github.com/apache/wicket/pull/164#discussion_r55933753
--- Diff:
wicket-metrics/src/main/java/org/apache/wicket/metrics/aspects/ComponentAspect.java
---
@@ -0,0 +1,122 @@
+/*
+ * 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.wicket.metrics.aspects;
+
+import org.apache.wicket.metrics.WicketMetrics;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+
+/**
+ * Gets information how often different components are rendered
+ *
+ * @author Tobias Soloschenko
+ */
+@Aspect
+public class ComponentAspect extends WicketMetrics
+{
+
+ /**
+ * Collects data how often components are rendered
+ *
+ * @param joinPoint
+ * the join point (component) which is rendered
+ * @return the object returned from the join point
+ * @throws Throwable
+ * might occur while onRender
+ */
+ @Around("execution(* org.apache.wicket.Component.onRender(..))")
+ public Object aroundOnRender(ProceedingJoinPoint joinPoint) throws
Throwable
+ {
+ return measureTime("core/component/render", joinPoint);
+ }
+
+ /**
+ * Collects data how often components are created
+ *
+ * @param joinPoint
+ * the join point (component) which is created
+ * @return the object returned from the join point
+ * @throws Throwable
+ * might occur while constructing a new component
+ */
+ @Around("execution(org.apache.wicket.Component.new(..))")
+ public Object aroundNew(ProceedingJoinPoint joinPoint) throws Throwable
+ {
+ return measureTime("core/component/create", joinPoint);
--- End diff --
A useful setting here to disable the measurement for Wicket base classes.
This time would be useful for us to optimize where possible, but I guess
most of the time user applications will be interested only in the time for
their components.
Using regex filter would be the most flexible way but it might slow down
the application.
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