Examples with RouteResult com.tencent.polaris.api.plugin.route.RouteResult used on opensource projects

Example 1 with RouteResult

use of com.tencent.polaris.api.plugin.route.RouteResult in project polaris-java by polarismesh.

the class BaseFlow method processRouterChain.

private static boolean processRouterChain(List<ServiceRouter> routers, RouteInfo routeInfo, ServiceInstancesWrap serviceInstances) throws PolarisException {
    if (CollectionUtils.isEmpty(routers)) {
        return false;
    }
    boolean processed = false;
    for (ServiceRouter router : routers) {
        if (CollectionUtils.isEmpty(serviceInstances.getInstances())) {
            // 实例为空，则退出路由
            break;
        }
        if (!router.enable(routeInfo, serviceInstances)) {
            continue;
        }
        processed = true;
        do {
            RouteResult filteredInstances = router.getFilteredInstances(routeInfo, serviceInstances);
            RouteResult.NextRouterInfo nextRouterInfo = filteredInstances.getNextRouterInfo();
            if (nextRouterInfo.getState() == RouteResult.State.Next) {
                serviceInstances.setInstances(filteredInstances.getInstances());
                break;
            }
            // 重试获取
            routeInfo.setNextRouterInfo(nextRouterInfo);
        } while (true);
    }
    return processed;
}

Example 2 with RouteResult

use of com.tencent.polaris.api.plugin.route.RouteResult in project polaris-java by polarismesh.

the class MetadataRouter method router.

@Override
public RouteResult router(RouteInfo routeInfo, ServiceInstances instances) throws PolarisException {
    FailOverType failOverType = config.getMetadataFailOverType();
    Map<String, String> svcMetadata = instances.getMetadata();
    if (MapUtils.isNotEmpty(svcMetadata)) {
        if (svcMetadata.containsKey(KEY_METADATA_FAILOVER_TYPE)) {
            String value = svcMetadata.get(KEY_METADATA_FAILOVER_TYPE);
            if (valueToFailoverType.containsKey(value)) {
                failOverType = valueToFailoverType.get(value);
            }
        }
    }
    MetadataFailoverType metadataFailoverType = routeInfo.getMetadataFailoverType();
    if (null != metadataFailoverType) {
        failOverType = inputToFailoverType.get(metadataFailoverType);
    }
    boolean availableInsFlag;
    Map<String, String> reqMetadata = routeInfo.getDestService().getMetadata();
    List<Instance> instanceList = new ArrayList<>();
    for (Instance ins : instances.getInstances()) {
        availableInsFlag = true;
        // 要满足请求中的metadata K-V全部存在于实例的metadata中
        for (Map.Entry<String, String> entry : reqMetadata.entrySet()) {
            if (ins.getMetadata().containsKey(entry.getKey()) && ins.getMetadata().get(entry.getKey()).equals(entry.getValue())) {
                continue;
            }
            availableInsFlag = false;
            break;
        }
        if (availableInsFlag) {
            instanceList.add(ins);
        }
    }
    if (!CollectionUtils.isEmpty(instanceList)) {
        return new RouteResult(instanceList, RouteResult.State.Next);
    }
    switch(failOverType) {
        case all:
            return new RouteResult(instances.getInstances(), RouteResult.State.Next);
        case others:
            return new RouteResult(addNotContainKeyIns(instances, reqMetadata), RouteResult.State.Next);
        default:
            // 默认不降级
            throw new PolarisException(ErrorCode.METADATA_MISMATCH, String.format("can not find any instance by service %s", routeInfo.getDestService()));
    }
}

Example 3 with RouteResult

use of com.tencent.polaris.api.plugin.route.RouteResult in project polaris-java by polarismesh.

the class NearbyRouter method router.

@Override
public RouteResult router(RouteInfo routeInfo, ServiceInstances serviceInstances) throws PolarisException {
    // 先获取最低可用就近级别
    LocationLevel minAvailableLevel = config.getMatchLevel();
    if (null == minAvailableLevel) {
        minAvailableLevel = defaultMinLevel;
    }
    LocationLevel minLevel = minAvailableLevel;
    if (null != routeInfo.getNextRouterInfo()) {
        if (null != routeInfo.getNextRouterInfo().getLocationLevel()) {
            minLevel = routeInfo.getNextRouterInfo().getLocationLevel();
        }
        if (null != routeInfo.getNextRouterInfo().getMinAvailableLevel()) {
            minAvailableLevel = routeInfo.getNextRouterInfo().getMinAvailableLevel();
        }
    }
    LocationLevel maxLevel = config.getMaxMatchLevel();
    if (null == maxLevel) {
        maxLevel = LocationLevel.all;
    }
    Map<LocationLevel, String> clientLocationInfo = locationInfo.get();
    if (minLevel.ordinal() >= maxLevel.ordinal()) {
        List<Instance> instances = selectInstances(serviceInstances, minAvailableLevel, clientLocationInfo);
        if (CollectionUtils.isEmpty(instances)) {
            throw new PolarisException(ErrorCode.LOCATION_MISMATCH, String.format("can not find any instance by level %s", minLevel.name()));
        }
        // 已经循环了一圈
        return new RouteResult(selectInstances(serviceInstances, minAvailableLevel, clientLocationInfo), RouteResult.State.Next);
    }
    CheckResult checkResult = new CheckResult();
    for (int i = minLevel.ordinal(); i <= maxLevel.ordinal(); i++) {
        LocationLevel curLevel = LocationLevel.values()[i];
        checkResult = hasHealthyInstances(serviceInstances, routeInfo.getStatusDimensions(), curLevel, clientLocationInfo);
        checkResult.curLevel = curLevel;
        if (!CollectionUtils.isEmpty(checkResult.instances)) {
            break;
        } else {
            minAvailableLevel = curLevel;
        }
    }
    if (CollectionUtils.isEmpty(checkResult.instances)) {
        throw new PolarisException(ErrorCode.LOCATION_MISMATCH, String.format("can not find any instance by level %s", checkResult.curLevel.name()));
    }
    if (!config.isEnableDegradeByUnhealthyPercent() || checkResult.curLevel == LocationLevel.all) {
        return new RouteResult(checkResult.instances, RouteResult.State.Next);
    }
    int healthyInstanceCount = checkResult.healthyInstanceCount;
    double actualHealthyPercent = (double) healthyInstanceCount / (double) serviceInstances.getInstances().size();
    if (actualHealthyPercent <= healthyPercentToDegrade) {
        LOG.debug("[shouldDegrade] enableDegradeByUnhealthyPercent = {},unhealthyPercentToDegrade={}," + "healthyPercent={},isStrict={},matchLevel={}", config.isEnableDegradeByUnhealthyPercent(), config.getUnhealthyPercentToDegrade(), actualHealthyPercent, config.isStrictNearby(), checkResult.curLevel);
        RouteResult result = new RouteResult(checkResult.instances, RouteResult.State.Retry);
        result.getNextRouterInfo().setLocationLevel(nextLevel(checkResult.curLevel));
        result.getNextRouterInfo().setMinAvailableLevel(minAvailableLevel);
        return result;
    }
    return new RouteResult(checkResult.instances, RouteResult.State.Next);
}