Examples with RuleType com.huawei.gray.feign.rule.RuleType used on opensource projects

Example 1 with RuleType

use of com.huawei.gray.feign.rule.RuleType in project Sermant by huaweicloud.

the class DefaultHttpClientServiceImpl method before.

@Override
public void before(Object obj, Method method, Object[] arguments, BeforeResult beforeResult) throws Exception {
    GrayConfig grayConfig = PluginConfigManager.getPluginConfig(GrayConfig.class);
    Request request = (Request) arguments[0];
    String targetAppName = HostContext.get();
    // 根据灰度规则重构请求地址
    GrayConfiguration grayConfiguration = LabelCache.getLabel(grayConfig.getSpringCloudKey());
    if (GrayConfiguration.isInValid(grayConfiguration)) {
        return;
    }
    // 获得url路径参数解析前的原始path
    URL url = new URL(request.url());
    String path = url.getPath();
    FeignResolvedUrl feignResolvedUrl = PathVarServiceImpl.URL_CONTEXT.get();
    if (feignResolvedUrl != null) {
        try {
            path = path.replace(feignResolvedUrl.getUrl().split("[?]")[0], feignResolvedUrl.getOriginUrl()).split("[?]")[0];
        } finally {
            PathVarServiceImpl.URL_CONTEXT.remove();
        }
    }
    // 获取匹配规则并替换url
    List<Rule> rules = RouterUtil.getValidRules(grayConfiguration, targetAppName, path);
    List<Route> routes = RouterUtil.getRoutes(rules, request);
    RuleType ruleType = CollectionUtils.isEmpty(routes) ? RuleType.UPSTREAM : RuleType.WEIGHT;
    Instances instance = ruleType.getTargetServiceInstance(routes, targetAppName, request.headers());
    if (instance != null) {
        String targetServiceHost = RouterUtil.getTargetHost(instance).orElse(null);
        String version = instance.getCurrentTag().getVersion();
        request = RouterUtil.rebuildUrl(targetServiceHost, version, request);
        arguments[0] = request;
    }
}