Java Metrics与Docker系统接口监控概览

微服务、Java Metrics、Docker、业务系统接口监控概览

1.记录类AccessMetricsFilter.java

@Log4j2 @Component @ConditionalOnClass(MetricRegistry.class) public class AccessMetricsFilter extends OncePerRequestFilter { private final String METRIC_SUFFIX_TIME = “.url_exec”;

@Value("${spring.application.name}")
private String applicationName;

private String[] excludeUrls = {};

@Override
public void afterPropertiesSet() throws ServletException {
    excludeUrls = new String[]{applicationName + "/tools/", applicationName + "/admin/tools"};
}

@Override
protected boolean shouldNotFilter(HttpServletRequest request) throws ServletException {
    //排除url
    String sourceUrl = request.getRequestURI();
    for (String excludeUrl : excludeUrls) {
        if (sourceUrl.indexOf(excludeUrl) != -1) {
            return true;
        }
    }
    return false;
}

@Autowired
private MetricRegistry metricRegistry;

@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
    String uri = request.getRequestURI().replaceAll("[/\\.]", "_");
    long startTime = System.nanoTime();
    long duration = 0L;
    try {
        filterChain.doFilter(request, response);
        duration = System.nanoTime() - startTime;
    } finally {
        //优先取本次记录的错误码
        Integer statusCode = (Integer) request.getAttribute(Constants.SERVER_ERROR_CODE);
        if (statusCode == null) {
            statusCode = response.getStatus();
        }

        //记录分析数据
        Timer timer = metricRegistry.timer(uri + "." + statusCode + METRIC_SUFFIX_TIME);
        timer.update(duration, TimeUnit.NANOSECONDS);

        if (log.isInfoEnabled()) {
            log.info("req: url={}, time={}ms, status={}", uri, TimeUnit.MILLISECONDS.convert(duration, TimeUnit.NANOSECONDS), statusCode);
        }
    }
}

}

2.指标上报配置类MetricsConfiguration.java @Configuration @ConditionalOnClass(MetricRegistry.class) @EnableMetrics @AutoConfigureAfter(MetricsConfig.class) @Log4j2 public class MetricsConfiguration extends MetricsConfigurerAdapter { @Value("${spring.application.name}") private String applicationName;

@Autowired
private MetricsConfig metricsConfig;

@Override
public void configureReporters(MetricRegistry metricRegistry) {
    // 采集jvm指标
    metricRegistry.register("-.-.jvm.gc", new com.codahale.metrics.jvm.GarbageCollectorMetricSet());
    metricRegistry.register("-.-.jvm.memory", new com.codahale.metrics.jvm.MemoryUsageGaugeSet());
    metricRegistry.register("-.-.jvm.thread-states", new com.codahale.metrics.jvm.ThreadStatesGaugeSet());
    metricRegistry.register("-.-.jvm.fd.usage", new com.codahale.metrics.jvm.FileDescriptorRatioGauge());

    // 配置Influxdb
    HttpInfluxdbProtocol influxdbProtocol = new HttpInfluxdbProtocol("http", metricsConfig.getHost(), metricsConfig.getPort(), metricsConfig.getUsername(), metricsConfig.getPassword(), metricsConfig.getDb());
    InfluxdbReporter.Builder builder = InfluxdbReporter.forRegistry(metricRegistry).protocol(influxdbProtocol);
    builder.convertRatesTo(TimeUnit.SECONDS).convertDurationsTo(TimeUnit.MILLISECONDS);
    builder.filter(MetricFilter.ALL).skipIdleMetrics(true);
    builder.tag("server", applicationName).tag("ip", HttpUtil.getDockerHostIp()).tag("cid", HttpUtil.getLocalHostName());
    builder.transformer(new CategoriesMetricMeasurementTransformer("url", "code"));

    // 启动上报
    ScheduledReporter reporter = builder.build();
    reporter.start(metricsConfig.getPeriod(), TimeUnit.SECONDS);

    log.debug("grafana上报初始化完成：host={}, port={}, db={}", metricsConfig.getHost(), metricsConfig.getPort(), metricsConfig.getDb());
}

}