Jetty（特别是Solr）向application insights请求延迟日志记录

Question

<Ref id="Handlers">
      <Call name="addHandler">
        <Arg>
          <New id="RequestLog" class="org.eclipse.jetty.server.handler.RequestLogHandler">
            <Set name="requestLog">
              <New id="RequestLogImpl" class="org.eclipse.jetty.server.NCSARequestLog">
                <Set name="filename">
                   logs/request.yyyy_mm_dd.log
                </Set>
                <Set name="filenameDateFormat">yyyy_MM_dd</Set>
                <Set name="retainDays">90</Set>
                <Set name="append">true</Set>
                <Set name="extended">false</Set>
                <Set name="logCookies">false</Set>
                <Set name="LogTimeZone">UTC</Set>
                <Set name="logLatency">true</Set>                
              </New>
            </Set>
          </New>
        </Arg>
      </Call>
    </Ref>

如何让log4j记录jetty请求延迟？

另外，我看到logback内置了对自己的RequestLogImpl https://logback.qos.ch/access.html的支持

和application insights支持日志备份https://docs.microsoft.com/en-us/azure/azure-monitor/app/java-trace-logs

<Ref id="Handlers">
  <Call name="addHandler">
    <Arg>
      <New id="RequestLog" class="org.eclipse.jetty.server.handler.RequestLogHandler">
        <Set name="requestLog">
            <New id="requestLogImpl" class="ch.qos.logback.access.jetty.RequestLogImpl">
            </New>
        </Set>
      </New>
    </Arg>
  </Call>
</Ref>

然而，我似乎无法获得日志记录任何请求到一个文件。不确定它是否使用logback-access.xml配置，尝试使用默认值提供文件路径，但没有成功。

server\etc\logback-access.xml（位于jetty.xml的相同位置）

并尝试为日志文件位置指定相对的、完全限定的路径,但均无效。

<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
  <!-- always a good activate OnConsoleStatusListener -->
  <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />  

<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>C:\logcallback\access.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>C:\logcallback\access.%d{yyyy-MM-dd}.log.zip</fileNamePattern>
    </rollingPolicy>

    <encoder>
      <pattern>combined</pattern>
    </encoder>
  </appender>

  <logger name="org.eclipse.jetty.server.RequestLog" level="DEBUG" additivity="false">
    <appender-ref ref="FILE" />
  </logger>

   <root level="DEBUG">
        <appender-ref ref="FILE"/>
    </root>
</configuration>

Answer 1

我找到了这段代码（谢谢）https://github.com/fewbytes/jetty-log4j-request-log/tree/master/src/main/java/com/fewbytes/jetty/log4j

修改后，我将Jetty响应时间记录到log4j中。

<Ref id="Handlers">
  <Call name="addHandler">
    <Arg>
      <New id="RequestLog" class="org.eclipse.jetty.server.handler.RequestLogHandler">
        <Set name="requestLog">
            <New id="requestLogImpl" class="com.fewbytes.jetty.log4j.Log4JRequestHandler">
            </New>
        </Set>
      </New>
    </Arg>
  </Call>
</Ref>

必须添加一个重载的无参数构造函数，就像在此之前得到一个无效的配置错误一样。

public Log4JRequestHandler()
    {
        this.loggerName = "com.fewbytes.jetty.log4j";
    }
    public Log4JRequestHandler(String loggerName) {
        this.loggerName = loggerName;
    }

我不得不修改ResponseDescriptor以获取空错误，并且不需要所有的cookie等，而且serializable对我不起作用，所以不得不重载到string（只需在toString上输出几个属性来测试这一点）

public JettyRequestResponseDescriptor(Request request, Response response) {
        method = request.getMethod();
        requestURL = request.getRequestURL().toString();
        status = response.getStatus();
        latency = System.currentTimeMillis() - request.getTimeStamp();
        remoteHost = request.getRemoteHost();
        remotePort = request.getRemotePort();
        scheme = request.getScheme();
        protocol = request.getProtocol();
        localName = request.getLocalName();
        localPort = request.getLocalPort();
        requestURI = request.getRequestURI();
        responseLength = response.getContentCount();
        serverName = request.getServerName();
        timestamp = request.getTimeStamp();
        referrer = request.getHeader(HttpHeaders.REFERER);
        userAgent = request.getHeader(HttpHeaders.USER_AGENT);
        X_Forwarded_For = request.getHeader(HttpHeaders.X_FORWARDED_FOR);
    }
    @Override
    public String toString() {
        return "JettyRequestResponseDescriptor [requestURL=" + requestURL + ", latency=" + latency + "]";
    }

然后在log4j.properties中

设置此记录器的日志级别

com.fewbytes.jetty.log4j=INFO

c:\apache-maven-3.6.1-bin\apache-maven-3.6.1\bin\mvn package

将生成的“jettylog4j-request-log-1.0-snapshot.jar”文件复制到“server\lib\ext”

并且可以在log4j生成的solr日志文件中看到来自Jetty的请求和延迟时间！

2019-08-16 12:51:41.318 INFO  (qtp100555887-18) [   ] c.f.j.log4j JettyRequestResponseDescriptor [requestURL=http://localhost:8983/solr/admin/collections, latency=110]

现在证明能做到，是时候整理一下了。