support spring cloud gateway routers (#230)
lepdou
2 years ago
committed by
GitHub
parent
30f57c527d
commit
68620d9f8f
@ -0,0 +1,58 @@
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.polaris.router.config;
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import java.util.List;
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import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
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import com.tencent.cloud.polaris.router.RouterRuleLabelResolver;
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import com.tencent.cloud.polaris.router.feign.PolarisCachingSpringLoadBalanceFactory;
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import com.tencent.cloud.polaris.router.feign.RouterLabelFeignInterceptor;
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import com.tencent.cloud.polaris.router.spi.RouterLabelResolver;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
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import org.springframework.cloud.netflix.ribbon.RibbonClients;
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import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.lang.Nullable;
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/**
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* configuration for feign singleton components.
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* Feign-related components need to be loaded only in the feign environment.
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*@author lepdou 2022-06-10
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*/
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@Configuration
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@ConditionalOnClass(name = {"org.springframework.cloud.openfeign.ribbon.FeignLoadBalancer"})
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@RibbonClients(defaultConfiguration = {FeignLoadBalancerConfiguration.class})
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public class FeignAutoConfiguration {
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@Bean
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public RouterLabelFeignInterceptor routerLabelInterceptor(@Nullable List<RouterLabelResolver> routerLabelResolvers,
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MetadataLocalProperties metadataLocalProperties,
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RouterRuleLabelResolver routerRuleLabelResolver) {
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return new RouterLabelFeignInterceptor(routerLabelResolvers, metadataLocalProperties, routerRuleLabelResolver);
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}
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@Bean
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public PolarisCachingSpringLoadBalanceFactory polarisCachingSpringLoadBalanceFactory(SpringClientFactory factory) {
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return new PolarisCachingSpringLoadBalanceFactory(factory);
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}
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}
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@ -0,0 +1,144 @@
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.polaris.router.scg;
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import java.net.URI;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import com.tencent.cloud.common.metadata.MetadataContext;
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import com.tencent.cloud.common.metadata.MetadataContextHolder;
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import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
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import com.tencent.cloud.common.util.ExpressionLabelUtils;
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import com.tencent.cloud.polaris.router.PolarisRouterContext;
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import com.tencent.cloud.polaris.router.RouterRuleLabelResolver;
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import com.tencent.cloud.polaris.router.spi.RouterLabelResolver;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.cloud.client.ServiceInstance;
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import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
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import org.springframework.cloud.gateway.config.LoadBalancerProperties;
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import org.springframework.cloud.gateway.filter.LoadBalancerClientFilter;
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import org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient;
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import org.springframework.core.Ordered;
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import org.springframework.util.CollectionUtils;
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import org.springframework.web.server.ServerWebExchange;
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import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR;
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/**
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* Replaces the default LoadBalancerClientFilter implementation.
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*@author lepdou 2022-06-10
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*/
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public class PolarisLoadBalancerClientFilter extends LoadBalancerClientFilter {
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private final static Logger LOGGER = LoggerFactory.getLogger(PolarisLoadBalancerClientFilter.class);
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private final MetadataLocalProperties metadataLocalProperties;
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private final RouterRuleLabelResolver routerRuleLabelResolver;
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private final List<RouterLabelResolver> routerLabelResolvers;
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private final boolean isRibbonLoadBalanceClient;
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public PolarisLoadBalancerClientFilter(LoadBalancerClient loadBalancer, LoadBalancerProperties properties,
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MetadataLocalProperties metadataLocalProperties,
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RouterRuleLabelResolver routerRuleLabelResolver,
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List<RouterLabelResolver> routerLabelResolvers) {
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super(loadBalancer, properties);
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this.metadataLocalProperties = metadataLocalProperties;
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this.routerRuleLabelResolver = routerRuleLabelResolver;
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if (!CollectionUtils.isEmpty(routerLabelResolvers)) {
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routerLabelResolvers.sort(Comparator.comparingInt(Ordered::getOrder));
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this.routerLabelResolvers = routerLabelResolvers;
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}
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else {
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this.routerLabelResolvers = null;
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}
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this.isRibbonLoadBalanceClient = loadBalancer instanceof RibbonLoadBalancerClient;
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}
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@Override
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protected ServiceInstance choose(ServerWebExchange exchange) {
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String peerServiceName = ((URI) exchange.getAttribute(GATEWAY_REQUEST_URL_ATTR)).getHost();
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if (isRibbonLoadBalanceClient) {
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// Pass routing context to ribbon load balancer
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PolarisRouterContext routerContext = genRouterContext(exchange, peerServiceName);
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return ((RibbonLoadBalancerClient) loadBalancer).choose(peerServiceName, routerContext);
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}
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else {
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return loadBalancer.choose(peerServiceName);
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}
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}
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PolarisRouterContext genRouterContext(ServerWebExchange exchange, String peerServiceName) {
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// local service labels
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Map<String, String> labels = new HashMap<>(metadataLocalProperties.getContent());
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// labels from rule expression
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Map<String, String> ruleExpressionLabels = getExpressionLabels(exchange, peerServiceName);
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if (!CollectionUtils.isEmpty(ruleExpressionLabels)) {
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labels.putAll(ruleExpressionLabels);
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}
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// labels from request
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if (!CollectionUtils.isEmpty(routerLabelResolvers)) {
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routerLabelResolvers.forEach(resolver -> {
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try {
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Map<String, String> customResolvedLabels = resolver.resolve(exchange);
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if (!CollectionUtils.isEmpty(customResolvedLabels)) {
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labels.putAll(customResolvedLabels);
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}
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}
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catch (Throwable t) {
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LOGGER.error("[SCT][Router] revoke RouterLabelResolver occur some exception. ", t);
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}
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});
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}
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// labels from downstream
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Map<String, String> transitiveLabels = MetadataContextHolder.get()
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.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
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labels.putAll(transitiveLabels);
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PolarisRouterContext routerContext = new PolarisRouterContext();
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routerContext.setLabels(PolarisRouterContext.RULE_ROUTER_LABELS, labels);
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routerContext.setLabels(PolarisRouterContext.TRANSITIVE_LABELS, transitiveLabels);
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return routerContext;
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}
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private Map<String, String> getExpressionLabels(ServerWebExchange exchange, String peerServiceName) {
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Set<String> labelKeys = routerRuleLabelResolver.getExpressionLabelKeys(MetadataContext.LOCAL_NAMESPACE,
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MetadataContext.LOCAL_SERVICE, peerServiceName);
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if (CollectionUtils.isEmpty(labelKeys)) {
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return Collections.emptyMap();
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}
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return ExpressionLabelUtils.resolve(exchange, labelKeys);
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}
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}
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@ -1,2 +1,3 @@
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org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
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com.tencent.cloud.polaris.router.config.RouterAutoConfiguration
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com.tencent.cloud.polaris.router.config.RouterAutoConfiguration,\
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com.tencent.cloud.polaris.router.config.FeignAutoConfiguration
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@ -0,0 +1,192 @@
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.polaris.router.scg;
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import java.net.URI;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Sets;
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import com.tencent.cloud.common.metadata.MetadataContext;
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import com.tencent.cloud.common.metadata.MetadataContextHolder;
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import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
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import com.tencent.cloud.common.util.ApplicationContextAwareUtils;
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import com.tencent.cloud.polaris.router.PolarisRouterContext;
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import com.tencent.cloud.polaris.router.RouterRuleLabelResolver;
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import com.tencent.cloud.polaris.router.spi.RouterLabelResolver;
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import org.junit.AfterClass;
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import org.junit.Assert;
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import org.junit.BeforeClass;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.Mock;
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import org.mockito.MockedStatic;
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import org.mockito.Mockito;
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import org.mockito.junit.MockitoJUnitRunner;
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import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
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import org.springframework.cloud.gateway.config.LoadBalancerProperties;
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import org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient;
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import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
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import org.springframework.mock.web.server.MockServerWebExchange;
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import static org.mockito.ArgumentMatchers.any;
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import static org.mockito.ArgumentMatchers.anyString;
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import static org.mockito.Mockito.times;
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import static org.mockito.Mockito.verify;
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import static org.mockito.Mockito.when;
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import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR;
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/**
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* test for ${@link PolarisLoadBalancerClientFilter}
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*@author lepdou 2022-06-13
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*/
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@RunWith(MockitoJUnitRunner.class)
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public class PolarisLoadBalancerClientFilterTest {
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@Mock
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private MetadataLocalProperties metadataLocalProperties;
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@Mock
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private RouterRuleLabelResolver routerRuleLabelResolver;
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@Mock
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private RouterLabelResolver routerLabelResolver;
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@Mock
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private LoadBalancerClient loadBalancerClient;
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@Mock
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private LoadBalancerProperties loadBalancerProperties;
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private static final String callerService = "callerService";
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private static final String calleeService = "calleeService";
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private static MockedStatic<ApplicationContextAwareUtils> mockedApplicationContextAwareUtils;
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private static MockedStatic<MetadataContextHolder> mockedMetadataContextHolder;
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@BeforeClass
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public static void beforeClass() {
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mockedApplicationContextAwareUtils = Mockito.mockStatic(ApplicationContextAwareUtils.class);
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mockedApplicationContextAwareUtils.when(() -> ApplicationContextAwareUtils.getProperties(anyString()))
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.thenReturn(callerService);
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MetadataContext metadataContext = Mockito.mock(MetadataContext.class);
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// mock transitive metadata
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Map<String, String> transitiveLabels = new HashMap<>();
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transitiveLabels.put("t1", "v1");
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transitiveLabels.put("t2", "v2");
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when(metadataContext.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE)).thenReturn(transitiveLabels);
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mockedMetadataContextHolder = Mockito.mockStatic(MetadataContextHolder.class);
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mockedMetadataContextHolder.when(MetadataContextHolder::get).thenReturn(metadataContext);
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}
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@AfterClass
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public static void afterClass() {
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mockedApplicationContextAwareUtils.close();
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mockedMetadataContextHolder.close();
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}
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@Test
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public void testGenRouterContext() {
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PolarisLoadBalancerClientFilter polarisLoadBalancerClientFilter = new PolarisLoadBalancerClientFilter(
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loadBalancerClient, loadBalancerProperties, metadataLocalProperties, routerRuleLabelResolver,
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Lists.newArrayList(routerLabelResolver));
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Map<String, String> localMetadata = new HashMap<>();
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localMetadata.put("env", "blue");
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when(metadataLocalProperties.getContent()).thenReturn(localMetadata);
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Set<String> expressionLabelKeys = Sets.newHashSet("${http.header.k1}", "${http.query.userid}");
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when(routerRuleLabelResolver.getExpressionLabelKeys(anyString(), anyString(), anyString())).thenReturn(expressionLabelKeys);
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MockServerHttpRequest request = MockServerHttpRequest.get("/" + calleeService + "/users")
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.header("k1", "v1")
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.queryParam("userid", "zhangsan")
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.build();
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MockServerWebExchange webExchange = new MockServerWebExchange.Builder(request).build();
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Map<String, String> customMetadata = new HashMap<>();
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customMetadata.put("k2", "v2");
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when(routerLabelResolver.resolve(webExchange)).thenReturn(customMetadata);
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PolarisRouterContext routerContext = polarisLoadBalancerClientFilter.genRouterContext(webExchange, calleeService);
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Map<String, String> routerLabels = routerContext.getLabels(PolarisRouterContext.RULE_ROUTER_LABELS);
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Assert.assertEquals("v1", routerLabels.get("${http.header.k1}"));
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Assert.assertEquals("zhangsan", routerLabels.get("${http.query.userid}"));
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Assert.assertEquals("blue", routerLabels.get("env"));
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Assert.assertEquals("v1", routerLabels.get("t1"));
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Assert.assertEquals("v2", routerLabels.get("t2"));
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}
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@Test
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public void testChooseInstanceWithoutRibbon() {
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PolarisLoadBalancerClientFilter polarisLoadBalancerClientFilter = new PolarisLoadBalancerClientFilter(
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loadBalancerClient, loadBalancerProperties, metadataLocalProperties, routerRuleLabelResolver,
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Lists.newArrayList(routerLabelResolver));
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String url = "/" + calleeService + "/users";
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MockServerHttpRequest request = MockServerHttpRequest.get(url)
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.header("k1", "v1")
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.queryParam("userid", "zhangsan")
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.build();
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MockServerWebExchange webExchange = new MockServerWebExchange.Builder(request).build();
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webExchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, URI.create("http://" + calleeService + "/users"));
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polarisLoadBalancerClientFilter.choose(webExchange);
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verify(loadBalancerClient).choose(calleeService);
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verify(metadataLocalProperties, times(0)).getContent();
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}
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@Test
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public void testChooseInstanceWithRibbon() {
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RibbonLoadBalancerClient ribbonLoadBalancerClient = Mockito.mock(RibbonLoadBalancerClient.class);
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PolarisLoadBalancerClientFilter polarisLoadBalancerClientFilter = new PolarisLoadBalancerClientFilter(
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ribbonLoadBalancerClient, loadBalancerProperties, metadataLocalProperties, routerRuleLabelResolver,
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Lists.newArrayList(routerLabelResolver));
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Map<String, String> localMetadata = new HashMap<>();
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localMetadata.put("env", "blue");
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when(metadataLocalProperties.getContent()).thenReturn(localMetadata);
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Set<String> expressionLabelKeys = Sets.newHashSet("${http.header.k1}", "${http.query.userid}");
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when(routerRuleLabelResolver.getExpressionLabelKeys(anyString(), anyString(), anyString())).thenReturn(expressionLabelKeys);
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String url = "/" + calleeService + "/users";
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MockServerHttpRequest request = MockServerHttpRequest.get(url)
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.header("k1", "v1")
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.queryParam("userid", "zhangsan")
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.build();
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MockServerWebExchange webExchange = new MockServerWebExchange.Builder(request).build();
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webExchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, URI.create("http://" + calleeService + "/users"));
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Map<String, String> customMetadata = new HashMap<>();
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customMetadata.put("k2", "v2");
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when(routerLabelResolver.resolve(webExchange)).thenReturn(customMetadata);
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polarisLoadBalancerClientFilter.choose(webExchange);
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verify(ribbonLoadBalancerClient).choose(anyString(), any());
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verify(metadataLocalProperties, times(1)).getContent();
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}
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}
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@ -0,0 +1,26 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>polaris-gateway-example</artifactId>
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<groupId>com.tencent.cloud</groupId>
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<version>${revision}</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>gateway-callee-service2</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.tencent.cloud</groupId>
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<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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</dependencies>
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</project>
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@ -0,0 +1,35 @@
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
|
||||
*
|
||||
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
|
||||
*
|
||||
* Licensed under the BSD 3-Clause License (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* https://opensource.org/licenses/BSD-3-Clause
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software distributed
|
||||
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
||||
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
|
||||
* specific language governing permissions and limitations under the License.
|
||||
*/
|
||||
|
||||
package com.tencent.cloud.polaris.gateway.example.callee;
|
||||
|
||||
import org.springframework.boot.SpringApplication;
|
||||
import org.springframework.boot.autoconfigure.SpringBootApplication;
|
||||
|
||||
/**
|
||||
* Gateway callee application.
|
||||
*
|
||||
* @author Haotian Zhang
|
||||
*/
|
||||
@SpringBootApplication
|
||||
public class GatewayCalleeApplication2 {
|
||||
|
||||
public static void main(String[] args) {
|
||||
SpringApplication.run(GatewayCalleeApplication2.class, args);
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,71 @@
|
||||
/*
|
||||
* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
|
||||
*
|
||||
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
|
||||
*
|
||||
* Licensed under the BSD 3-Clause License (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* https://opensource.org/licenses/BSD-3-Clause
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software distributed
|
||||
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
||||
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
|
||||
* specific language governing permissions and limitations under the License.
|
||||
*/
|
||||
|
||||
package com.tencent.cloud.polaris.gateway.example.callee;
|
||||
|
||||
import java.io.UnsupportedEncodingException;
|
||||
import java.net.URLDecoder;
|
||||
|
||||
import com.tencent.cloud.common.constant.MetadataConstant;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import org.springframework.beans.factory.annotation.Value;
|
||||
import org.springframework.web.bind.annotation.RequestHeader;
|
||||
import org.springframework.web.bind.annotation.RequestMapping;
|
||||
import org.springframework.web.bind.annotation.RestController;
|
||||
|
||||
/**
|
||||
* Gateway callee controller.
|
||||
*
|
||||
* @author Haotian Zhang
|
||||
*/
|
||||
@RestController
|
||||
@RequestMapping("/gateway/example/callee")
|
||||
public class GatewayCalleeController {
|
||||
|
||||
private static Logger LOG = LoggerFactory.getLogger(GatewayCalleeController.class);
|
||||
|
||||
@Value("${server.port:0}")
|
||||
private int port;
|
||||
|
||||
/**
|
||||
* Get information of callee.
|
||||
* @return information of callee
|
||||
*/
|
||||
@RequestMapping("/info")
|
||||
public String info() {
|
||||
LOG.info("Gateway Example Callee [{}] is called.", port);
|
||||
return String.format("Gateway Example Callee [%s] is called.", port);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get metadata in HTTP header.
|
||||
*
|
||||
* @param metadataStr metadata string
|
||||
* @return metadata in HTTP header
|
||||
* @throws UnsupportedEncodingException encoding exception
|
||||
*/
|
||||
@RequestMapping("/echo")
|
||||
public String echoHeader(
|
||||
@RequestHeader(MetadataConstant.HeaderName.CUSTOM_METADATA) String metadataStr)
|
||||
throws UnsupportedEncodingException {
|
||||
LOG.info(URLDecoder.decode(metadataStr, "UTF-8"));
|
||||
return URLDecoder.decode(metadataStr, "UTF-8");
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,14 @@
|
||||
server:
|
||||
session-timeout: 1800
|
||||
port: 48082
|
||||
spring:
|
||||
application:
|
||||
name: GatewayCalleeService
|
||||
cloud:
|
||||
tencent:
|
||||
metadata:
|
||||
content:
|
||||
env: green
|
||||
polaris:
|
||||
address: grpc://183.47.111.80:8091
|
||||
namespace: default
|
||||
Loading…
Reference in new issue