chuntaojun
3 years ago
parent
5d7310a9e7
commit
542f6a4c03
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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.rpc.enhancement.scg;
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import java.net.SocketTimeoutException;
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import java.util.Map;
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import java.util.Objects;
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import java.util.function.BiConsumer;
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import com.tencent.cloud.common.constant.HeaderConstant;
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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.rpc.enhancement.AbstractPolarisReporterAdapter;
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import com.tencent.cloud.rpc.enhancement.config.RpcEnhancementReporterProperties;
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import com.tencent.polaris.api.core.ConsumerAPI;
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import com.tencent.polaris.api.pojo.RetStatus;
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import com.tencent.polaris.api.pojo.ServiceKey;
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import com.tencent.polaris.api.rpc.ServiceCallResult;
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import com.tencent.polaris.client.api.SDKContext;
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import io.netty.handler.codec.http.HttpHeaders;
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import org.apache.commons.lang.StringUtils;
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import reactor.netty.Connection;
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import reactor.netty.http.client.HttpClient;
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import reactor.netty.http.client.HttpClientConfig;
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import reactor.netty.http.client.HttpClientRequest;
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import reactor.netty.http.client.HttpClientResponse;
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import org.springframework.http.HttpStatus;
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public class EnhancedPolarisHttpClient extends HttpClient {
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private final RpcEnhancementReporterProperties properties;
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private final SDKContext context;
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private final ConsumerAPI consumerAPI;
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private final Reporter adapter;
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private final BiConsumer<? super HttpClientResponse, ? super Throwable> handler = new BiConsumer<HttpClientResponse, Throwable>() {
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@Override
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public void accept(HttpClientResponse httpClientResponse, Throwable throwable) {
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if (Objects.isNull(consumerAPI)) {
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return;
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}
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HttpHeaders responseHeaders = httpClientResponse.responseHeaders();
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ServiceCallResult result = new ServiceCallResult();
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result.setCallerService(new ServiceKey(MetadataContext.LOCAL_NAMESPACE, MetadataContext.LOCAL_SERVICE));
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result.setNamespace(MetadataContext.LOCAL_NAMESPACE);
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Map<String, String> metadata = MetadataContextHolder.get().getLoadbalancerMetadata();
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result.setDelay(System.currentTimeMillis() - Long.parseLong(metadata.get("startTime")));
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result.setService(metadata.get(HeaderConstant.INTERNAL_CALLEE_SERVICE_ID));
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result.setHost(metadata.get(HeaderConstant.INTERNAL_CALLEE_INSTANCE_HOST));
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result.setPort(Integer.parseInt(metadata.get(HeaderConstant.INTERNAL_CALLEE_INSTANCE_PORT)));
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RetStatus status = RetStatus.RetSuccess;
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if (Objects.isNull(throwable)) {
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if (EnhancedPolarisHttpClient.this.adapter.apply(HttpStatus.valueOf(httpClientResponse.status()
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.code()))) {
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status = RetStatus.RetFail;
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}
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status = getRetStatusFromRequest(responseHeaders, status);
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}
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else {
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if (throwable instanceof SocketTimeoutException) {
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status = RetStatus.RetTimeout;
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}
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}
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result.setMethod(httpClientResponse.uri());
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result.setRetCode(httpClientResponse.status().code());
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result.setRuleName(getActiveRuleNameFromRequest(responseHeaders));
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result.setRetStatus(status);
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if (Objects.nonNull(context)) {
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result.setCallerIp(context.getConfig().getGlobal().getAPI().getBindIP());
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}
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consumerAPI.updateServiceCallResult(result);
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}
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};
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private HttpClient target;
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public EnhancedPolarisHttpClient(
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HttpClient client,
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RpcEnhancementReporterProperties properties,
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SDKContext context,
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ConsumerAPI consumerAPI) {
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this.properties = properties;
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this.context = context;
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this.consumerAPI = consumerAPI;
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this.target = client;
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this.adapter = new Reporter(properties);
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this.registerReportHandler();
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}
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private static RetStatus getRetStatusFromRequest(HttpHeaders headers, RetStatus defaultVal) {
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if (headers.contains(HeaderConstant.INTERNAL_CALLEE_RET_STATUS)) {
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String retStatusVal = headers.get(HeaderConstant.INTERNAL_CALLEE_RET_STATUS);
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if (Objects.equals(retStatusVal, RetStatus.RetFlowControl.getDesc())) {
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return RetStatus.RetFlowControl;
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}
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if (Objects.equals(retStatusVal, RetStatus.RetReject.getDesc())) {
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return RetStatus.RetReject;
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}
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}
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return defaultVal;
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}
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private static String getActiveRuleNameFromRequest(HttpHeaders headers) {
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if (headers.contains(HeaderConstant.INTERNAL_ACTIVE_RULE_NAME)) {
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String val = headers.get(HeaderConstant.INTERNAL_ACTIVE_RULE_NAME);
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return val;
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}
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return "";
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}
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@Override
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public HttpClientConfig configuration() {
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return target.configuration();
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}
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@Override
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protected HttpClient duplicate() {
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return new EnhancedPolarisHttpClient(target, properties, context, consumerAPI);
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}
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private void registerReportHandler() {
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target = target.doOnRequest(new BiConsumer<HttpClientRequest, Connection>() {
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@Override
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public void accept(HttpClientRequest request, Connection connection) {
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String serviceId = request.requestHeaders().get(HeaderConstant.INTERNAL_CALLEE_SERVICE_ID);
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String host = request.requestHeaders().get(HeaderConstant.INTERNAL_CALLEE_INSTANCE_HOST);
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String port = request.requestHeaders().get(HeaderConstant.INTERNAL_CALLEE_INSTANCE_PORT);
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if (StringUtils.isNotBlank(serviceId)) {
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MetadataContextHolder.get().setLoadbalancer(HeaderConstant.INTERNAL_CALLEE_SERVICE_ID, serviceId);
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MetadataContextHolder.get().setLoadbalancer(HeaderConstant.INTERNAL_CALLEE_INSTANCE_HOST, host);
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MetadataContextHolder.get().setLoadbalancer(HeaderConstant.INTERNAL_CALLEE_INSTANCE_PORT, port);
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MetadataContextHolder.get().setLoadbalancer("startTime", System.currentTimeMillis() + "");
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}
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request.requestHeaders().remove(HeaderConstant.INTERNAL_CALLEE_SERVICE_ID);
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request.requestHeaders().remove(HeaderConstant.INTERNAL_CALLEE_INSTANCE_HOST);
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request.requestHeaders().remove(HeaderConstant.INTERNAL_CALLEE_INSTANCE_PORT);
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}
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});
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target = target.doOnResponse((httpClientResponse, connection) -> handler.accept(httpClientResponse, null));
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target = target.doOnResponseError(handler);
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}
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private static class Reporter extends AbstractPolarisReporterAdapter {
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/**
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* Constructor With {@link RpcEnhancementReporterProperties} .
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*
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* @param reportProperties instance of {@link RpcEnhancementReporterProperties}.
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*/
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protected Reporter(RpcEnhancementReporterProperties reportProperties) {
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super(reportProperties);
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}
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@Override
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public boolean apply(HttpStatus httpStatus) {
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return super.apply(httpStatus);
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}
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}
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}
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@ -0,0 +1,43 @@
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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.rpc.enhancement.scg;
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import com.tencent.cloud.rpc.enhancement.config.RpcEnhancementReporterProperties;
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import com.tencent.polaris.api.core.ConsumerAPI;
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import com.tencent.polaris.client.api.SDKContext;
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import reactor.netty.http.client.HttpClient;
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import org.springframework.cloud.gateway.config.HttpClientCustomizer;
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public class EnhancedPolarisHttpClientCustomizer implements HttpClientCustomizer {
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private final RpcEnhancementReporterProperties properties;
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private final SDKContext context;
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private final ConsumerAPI consumerAPI;
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public EnhancedPolarisHttpClientCustomizer(RpcEnhancementReporterProperties properties, SDKContext context, ConsumerAPI consumerAPI) {
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this.properties = properties;
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this.context = context;
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this.consumerAPI = consumerAPI;
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}
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@Override
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public HttpClient customize(HttpClient httpClient) {
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return new EnhancedPolarisHttpClient(httpClient, properties, context, consumerAPI);
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}
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}
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@ -0,0 +1,71 @@
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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.rpc.enhancement.scg;
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import java.util.List;
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import com.tencent.cloud.common.constant.HeaderConstant;
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import org.springframework.cloud.client.ServiceInstance;
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import org.springframework.cloud.client.loadbalancer.Response;
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import org.springframework.cloud.gateway.filter.headers.HttpHeadersFilter;
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import org.springframework.http.HttpHeaders;
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import org.springframework.util.StringUtils;
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import org.springframework.web.server.ServerWebExchange;
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import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_LOADBALANCER_RESPONSE_ATTR;
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public class EnhancedPolarisHttpHeadersFilter implements HttpHeadersFilter {
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public EnhancedPolarisHttpHeadersFilter() {
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}
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@Override
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public HttpHeaders filter(HttpHeaders input, ServerWebExchange exchange) {
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Response<ServiceInstance> serviceInstanceResponse = exchange.getAttribute(GATEWAY_LOADBALANCER_RESPONSE_ATTR);
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if (serviceInstanceResponse == null || !serviceInstanceResponse.hasServer()) {
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return input;
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}
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ServiceInstance instance = serviceInstanceResponse.getServer();
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write(input, HeaderConstant.INTERNAL_CALLEE_SERVICE_ID, instance.getServiceId(), true);
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write(input, HeaderConstant.INTERNAL_CALLEE_INSTANCE_HOST, instance.getHost(), true);
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write(input, HeaderConstant.INTERNAL_CALLEE_INSTANCE_PORT, instance.getPort() + "", true);
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return input;
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}
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@Override
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public boolean supports(Type type) {
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return Type.REQUEST.equals(type);
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}
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private void write(HttpHeaders headers, String name, String value, boolean append) {
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if (value == null) {
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return;
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}
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if (append) {
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headers.add(name, value);
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// these headers should be treated as a single comma separated header
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List<String> values = headers.get(name);
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String delimitedValue = StringUtils.collectionToCommaDelimitedString(values);
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headers.set(name, delimitedValue);
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}
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else {
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headers.set(name, value);
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}
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}
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}
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