Examples with SliceWindow com.tencent.polaris.plugins.circuitbreaker.common.stat.SliceWindow used on opensource projects

Example 1 with SliceWindow

use of com.tencent.polaris.plugins.circuitbreaker.common.stat.SliceWindow in project polaris-java by polarismesh.

the class ErrRateCircuitBreaker method stat.

@Override
public boolean stat(InstanceGauge gauge) {
    InstanceByProto instance = ChangeStateUtils.getInstance(gauge, localRegistry);
    if (null == instance) {
        return false;
    }
    InstanceLocalValue instanceLocalValue = instance.getInstanceLocalValue();
    if (null == instanceLocalValue) {
        return false;
    }
    ConfigSet<Config> configSet = CircuitBreakUtils.getConfigSet(gauge, this);
    StatusDimension statusDimension = ChangeStateUtils.buildStatusDimension(gauge, configSet.getLevel());
    if (CircuitBreakUtils.instanceClose(instance, statusDimension)) {
        Object pluginValue = instanceLocalValue.getPluginValue(id, create);
        ErrRateCounter errRateCounter = (ErrRateCounter) pluginValue;
        SliceWindow metricWindow = errRateCounter.getSliceWindow(statusDimension);
        metricWindow.addGauge((bucket -> {
            bucket.addMetric(Dimension.keyRequestCount.ordinal(), 1);
            if (gauge.getRetStatus() == RetStatus.RetFail) {
                return bucket.addMetric(Dimension.keyFailCount.ordinal(), 1);
            }
            return bucket.getMetric(Dimension.keyFailCount.ordinal());
        }));
    } else if (CircuitBreakUtils.instanceHalfOpen(instance, statusDimension)) {
        // 半开计数器
        Object pluginValue = instanceLocalValue.getPluginValue(id, create);
        HalfOpenCounter consecutiveCounter = (HalfOpenCounter) pluginValue;
        RetStatus retStatus = gauge.getRetStatus();
        return consecutiveCounter.triggerHalfOpenConversion(statusDimension, retStatus, configSet.getHalfOpenConfig());
    }
    return false;
}

Example 2 with SliceWindow

use of com.tencent.polaris.plugins.circuitbreaker.common.stat.SliceWindow in project polaris-java by polarismesh.

the class StateMachineImpl method closeToOpen.

@Override
public boolean closeToOpen(Instance instance, StatusDimension statusDimension, Parameter parameter) {
    HalfOpenCounter halfOpenCounter = getHalfOpenCounterOnClose(instance, statusDimension);
    if (halfOpenCounter == null) {
        return false;
    }
    ConfigSet<Config> configSet = getConfigSetByLocator(instance, statusDimension, configSetLocator);
    Config plugConfig = configSet.getPlugConfig();
    ErrRateCounter errRateCounter = (ErrRateCounter) halfOpenCounter;
    SliceWindow metricWindow = errRateCounter.getSliceWindow(statusDimension);
    long currentTimeMs = parameter.getCurrentTimeMs();
    TimeRange timeRange = new TimeRange(currentTimeMs - metricTimeWindowMs, currentTimeMs);
    long requestCount = metricWindow.calcMetricsBothIncluded(Dimension.keyRequestCount.ordinal(), timeRange);
    if (requestCount == 0 || requestCount < plugConfig.getRequestVolumeThreshold()) {
        // 未达到其实请求数阈值
        return false;
    }
    long failCount = metricWindow.calcMetricsBothIncluded(Dimension.keyFailCount.ordinal(), timeRange);
    double failRatio = (double) failCount / (double) requestCount;
    LOG.debug("errRate statistic: request count {}, fail count {}, instance {}:{}, dimension {}, failRatio {}", requestCount, failCount, instance.getHost(), instance.getPort(), statusDimension, failRatio);
    // 错误率达标
    return failRatio >= plugConfig.getErrRate();
}