optimize router label resolver spi (#449)
lepdou
2 years ago
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GitHub
parent
3c4bddd6d1
commit
7f27e79d5d
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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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package com.tencent.cloud.polaris.router.spi;
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import java.util.Map;
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import java.util.Set;
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import feign.RequestTemplate;
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import org.springframework.core.Ordered;
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/**
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* Router label resolver for feign request.
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* @author lepdou 2022-07-20
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*/
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public interface FeignRouterLabelResolver extends Ordered {
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/**
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* Resolve labels from feign request. User can customize expression parser to extract labels.
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*
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* @param requestTemplate the feign request.
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* @param expressionLabelKeys the expression labels which are configured in router rule.
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* @return resolved labels
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*/
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Map<String, String> resolve(RequestTemplate requestTemplate, Set<String> expressionLabelKeys);
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}
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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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package com.tencent.cloud.polaris.router.spi;
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import java.util.Collections;
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import java.util.Map;
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import java.util.Set;
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import org.springframework.core.Ordered;
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import org.springframework.http.HttpRequest;
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import org.springframework.web.server.ServerWebExchange;
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/**
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* Router label resolver for spring web http request.
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* @author lepdou 2022-07-20
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*/
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public interface SpringWebRouterLabelResolver extends Ordered {
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/**
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* resolve labels from rest template request. User can customize expression parser to extract labels.
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*
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* @param request the rest template request.
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* @param body the rest template request body.
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* @param expressionLabelKeys the expression labels which are configured in router rule.
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* @return resolved labels
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*/
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default Map<String, String> resolve(HttpRequest request, byte[] body, Set<String> expressionLabelKeys) {
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return Collections.emptyMap();
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}
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/**
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* resolve labels from server web exchange. User can customize expression parser to extract labels.
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*
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* @param exchange the server web exchange.
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* @param expressionLabelKeys the expression labels which are configured in router rule.
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* @return resolved labels
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*/
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default Map<String, String> resolve(ServerWebExchange exchange, Set<String> expressionLabelKeys) {
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return Collections.emptyMap();
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}
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}
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35
spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomRouterLabelResolver.java → spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomFeignRouterLabelResolver.java
35
spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomRouterLabelResolver.java → spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomFeignRouterLabelResolver.java
@ -0,0 +1,52 @@
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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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package com.tencent.cloud.polaris.router.example;
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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.gson.Gson;
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import com.tencent.cloud.polaris.router.spi.SpringWebRouterLabelResolver;
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import org.springframework.http.HttpRequest;
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import org.springframework.stereotype.Component;
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/**
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* Custom router label resolver for spring web request.
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* @author lepdou 2022-07-20
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*/
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@Component
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public class CustomSpringWebRouterLabelResolver implements SpringWebRouterLabelResolver {
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private final Gson gson = new Gson();
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@Override
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public int getOrder() {
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return 0;
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}
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@Override
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public Map<String, String> resolve(HttpRequest request, byte[] body, Set<String> expressionLabelKeys) {
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Map<String, String> labels = new HashMap<>();
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User user = gson.fromJson(new String(body), User.class);
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labels.put("user", user.getName());
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return labels;
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}
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}
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