perf4j集成Logback

最新推荐文章于 2024-10-17 16:03:50 发布

转载最新推荐文章于 2024-10-17 16:03:50 发布 · 223 阅读

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原文链接：https://my.oschina.net/woter/blog/1511622

文章标签：

#java

本文介绍如何在项目中集成Perf4j进行性能监控，包括配置Logback记录性能指标，通过Perf4j生成统计图表，并在Spring Boot项目中配置GraphingServlet以展示性能监控图表。

为什么80%的码农都做不了架构师？>>>

系统如何集成per4j：

集成logback日志：

logback.xml 新增下面appender：

<appender name="graphsFileAppender" class="ch.qos.logback.core.FileAppender">  
	    <file>${LOG_HOME}/perf.log</file>  
	    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">  
	        <pattern>%m%n</pattern>  
	    </encoder>  
	</appender>

<appender name="coalescingStatistics" class="org.perf4j.logback.AsyncCoalescingStatisticsAppender">
        <timeSlice>60000</timeSlice> <!-- 表示60s统计一次 -->
        <appender-ref ref="graphsFileAppender"/>
    </appender>
	
	<logger name="org.perf4j.TimingLogger" level="info" additivity="false">
		<appender-ref ref="coalescingStatistics" />
	</logger>

WEB项目直接在拦截器里拦截：

import **.*.**


@Component
public class PerformanceInterceptor extends HandlerInterceptorAdapter {

    private static Logger logger = LoggerFactory.getLogger(PerformanceInterceptor.class);

    
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {


	String reqURI = request.getRequestURI();
	if (reqURI.indexOf("css") == -1 && reqURI.indexOf("js") == -1 && reqURI.indexOf("image") == -1) {
	    StopWatch stopWatch = new Slf4JStopWatch();
	    request.setAttribute("stopWatch", stopWatch);
	}

	return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
	StopWatch stopWatch = (StopWatch) request.getAttribute("stopWatch");
        if (stopWatch != null) {
            String reqURI = request.getRequestURI();
            if (reqURI.equals("/")) {
                stopWatch.stop("http.index");
            } else {
                reqURI = reqURI.replaceAll("/", ".");
                if (reqURI.endsWith(".")) {
                    reqURI = reqURI.substring(0, reqURI.length() - 1);
                }
                stopWatch.stop("http" + reqURI);
            }
            stopWatch.lap("http.request.total");
        }
        super.afterCompletion(request, response, handler, ex);
    }

}

打开日志文件60后显示：

集成per4j图表

上面讲的是常见的使用方式。但是perf4j也提供了生成图表的方式展示，当然它是以google图标api生成的，所以在被墙的今天这一功能我们基本可以忽视，但使用方式还是说明下：

修改logback.xml

<appender name="graphExecutionTimes"  class="org.perf4j.logback.GraphingStatisticsAppender">
	    <!-- GraphType:Mean（平均值）, Min（最小值）, Max（最大值）, TPS（每秒事务数） -->
        <param name="GraphType" value="Mean"/>
        <param name="TagNamesToGraph" value="http.pluto.pos.info.search,http.pluto.pos.endorse.detail.html"/>
	    <appender-ref ref="graphsFileAppender"/>
	
	</appender>
	
	<appender name="graphExecutionTPS" class="org.perf4j.logback.GraphingStatisticsAppender">
	    <!-- Possible GraphTypes are Mean, Min, Max, StdDev, Count and TPS -->
	    <param name="GraphType" value="TPS"/>
        <!-- <param name="TagNamesToGraph" value="firstBlock,secondBlock"/> -->
	    <appender-ref ref="graphsFileAppender"/>
	</appender>

<appender name="coalescingStatistics" class="org.perf4j.logback.AsyncCoalescingStatisticsAppender">
        <timeSlice>60000</timeSlice>
	    <appender-ref ref="graphExecutionTimes"/>
        <appender-ref ref="graphExecutionTPS"/>
        <!-- <appender-ref ref="graphsFileAppender"/> -->
    </appender>

如果是WEB项目则配置好GraphingServlet，能提供页面展示图表：
例如：我使用的是spring boot注册GraphingServlet，则可以采用 127.0.0.1:8080/test/perf4j访问了（注意图片是访问google的api所以需要翻墙才能看得到效果）

@Bean
    public ServletRegistrationBean testServletRegistrationBean() {
	ServletRegistrationBean registration = new ServletRegistrationBean(new GraphingServlet());
	registration.setEnabled(true);
	Map<String,String> map = new HashMap<String,String>();
	map.put("graphNames", "graphExecutionTimes,graphExecutionTPS");
	registration.setInitParameters(map);
	registration.addUrlMappings("/perf4j");
	return registration;
    }

效果图如下：