001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.support.metric.interceptor;
017
018import com.codahale.metrics.Timer;
019import com.jfinal.aop.Interceptor;
020import com.jfinal.aop.Invocation;
021import io.jboot.Jboot;
022import io.jboot.support.metric.annotation.EnableMetricTimer;
023import io.jboot.utils.AnnotationUtil;
024import io.jboot.utils.StrUtil;
025
026public class MetricTimerInterceptor implements Interceptor {
027
028
029    @Override
030    public void intercept(Invocation inv) {
031
032        Timer.Context timerContext = null;
033
034        EnableMetricTimer timerAnnotation = inv.getMethod().getAnnotation(EnableMetricTimer.class);
035        if (timerAnnotation != null) {
036            String value = AnnotationUtil.get(timerAnnotation.value());
037            String name = StrUtil.isBlank(value)
038                    ? inv.getController().getClass().getName() + "." + inv.getMethodName() + ".timer"
039                    : value;
040
041
042            Timer timer = Jboot.getMetric().timer(name);
043            timerContext = timer.time();
044        }
045
046
047        try {
048            inv.invoke();
049        } finally {
050            if (timerContext != null) {
051                timerContext.stop();
052            }
053        }
054    }
055
056
057}