当前位置：首页 > news >正文

上海由多少家网站建设公司长沙seo代理商

news 2025/8/8 16:39:49

上海由多少家网站建设公司,长沙seo代理商,广告设计公司实践报告,购买一级域名做网站一.sentinel规则推送原理 1.原有内存规则存储原理 (1)dashborad中请求到服务器后，在controller中通过http把规则直接推送给client，client接收后把规则放入内存； 2.持久化推送规则原理 ![在这里插入代码片](https://img-blog.csdnimg.cn/1…

一.sentinel规则推送原理

1.原有内存规则存储原理

(1)dashborad中请求到服务器后，在controller中通过http把规则直接推送给client，client接收后把规则放入内存；

2.持久化推送规则原理

![在这里插入代码片](https://img-blog.csdnimg.cn/16a99e8e725a4eb6a7011f36ec7f70e0.png)

一.sentinel持久化改造

1.改造dashboard

（1）sentinel提供了持久化方案的数据源，将 test 这一行注释掉

<!-- for Nacos rule publisher sample --><dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-datasource-nacos</artifactId><version>${sentinel.project.version}</version>
<!--            <scope>test</scope>--></dependency>

（2）引入nacos配置中心和注册中心

 <!-- Nacos注册中心 --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><!-- Nacos配置中心 --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId></dependency>

（3）添加远程来取配置的bean

在这里插入图片描述

（3）添加从远程配置中心拉取规则

1./v1/flow/rules(GET)请求中把”从客户端内存获取规则配置“修改成”从远程配置中心获取规则配置“

![在这里插入图片描述](https://img-blog.csdnimg.cn/38054ed9356b4e40a355d45079590389.png

2.从nacos中拉取配置，DynamicRuleProvider实现这个接口用来拉取配置的扩展接口，List泛型类list表示配置有多条FlowRuleEntity返回到控制台的实体信息，注入ConfigService配置中心的核心接口，这里从nacos拉到的数组对象是FlowRule，所以需要通过”FlowRuleEntity.fromFlowRule(appName,ip,port,rule))“转换成FlowRuleEntity；

![在这里插入图片描述](https://img-blog.csdnimg.cn/c1289d8c77364744a9cc509754fde0e1.png

（4）将控制台添加的规则信息推送到nacos中

1./v1/flow/rule(POST)请求中把“发布规则到客户端内存中”修改成“发布规则到远程配置中心”

在这里插入图片描述

2.把dashboard服务内存中的配置推送到nacos中，DynamicRulePublisher实现这个接口用来推送配置的扩展接口，List泛型类list表示配置有多条FlowRuleEntity返回到控制台的实体信息，注入ConfigService配置中心的核心接口，这里推送打nacos中的对象是FlowRule，所以需要通过”NacosConfigUtil.convertToRule(rules)“转换成FlowRule；

在这里插入图片描述

（5）将控制台添加的规则信息推送到nacos中如果是Gateway网关则需要该如下两个类

![在这里插入图片描述](https://img-blog.csdnimg.cn/1ba449a40e5c4ae29b7c8a87a7714286.png

（5）注入nacos操作配置中心的核心bean ConfigService和FlowRuleEntity与FlowRule转换工具类

在这里插入图片描述

/** Copyright 1999-2018 Alibaba Group Holding Ltd.** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** 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.alibaba.csp.sentinel.dashboard.rule.nacos;import com.alibaba.nacos.api.PropertyKeyConst;
import com.alibaba.nacos.api.config.ConfigFactory;
import com.alibaba.nacos.api.config.ConfigService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.Properties;/*** @author Fox*/
@Configuration
public class NacosConfig {@Value("${spring.cloud.nacos.discovery.server-addr}")private String serverAddr;@Value("${spring.cloud.nacos.discovery.username}")private String username;@Value("${spring.cloud.nacos.discovery.password}")private String password;@Value("${spring.cloud.nacos.discovery.namespace:}")private String namespace;@Beanpublic ConfigService nacosConfigService() throws Exception {
//        return ConfigFactory.createConfigService(serverAddr);Properties properties = new Properties();properties.setProperty(PropertyKeyConst.SERVER_ADDR, serverAddr);properties.setProperty(PropertyKeyConst.USERNAME, username);properties.setProperty(PropertyKeyConst.PASSWORD, password);if (!StringUtils.isEmpty(namespace)) {properties.setProperty(PropertyKeyConst.NAMESPACE, namespace);}return ConfigFactory.createConfigService(properties);}}

/** Copyright 1999-2018 Alibaba Group Holding Ltd.** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** 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.alibaba.csp.sentinel.dashboard.rule.nacos;import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiDefinitionEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayFlowRuleEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.RuleEntity;
import com.alibaba.csp.sentinel.util.StringUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.exception.NacosException;import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;/*** @author Fox*/
public final class NacosConfigUtil {public static final String GROUP_ID = "SENTINEL_GROUP";public static final String FLOW_DATA_ID_POSTFIX = "-flow-rules";public static final String PARAM_FLOW_DATA_ID_POSTFIX = "-param-flow-rules";public static final String DEGRADE_DATA_ID_POSTFIX = "-degrade-rules";public static final String SYSTEM_DATA_ID_POSTFIX = "-system-rules";public static final String AUTHORITY_DATA_ID_POSTFIX = "-authority-rules";public static final String GATEWAY_FLOW_DATA_ID_POSTFIX = "-gateway-flow-rules";public static final String GATEWAY_API_DATA_ID_POSTFIX = "-gateway-api-rules";public static final String CLUSTER_MAP_DATA_ID_POSTFIX = "-cluster-map";/*** cc for `cluster-client`*/public static final String CLIENT_CONFIG_DATA_ID_POSTFIX = "-cc-config";/*** cs for `cluster-server`*/public static final String SERVER_TRANSPORT_CONFIG_DATA_ID_POSTFIX = "-cs-transport-config";public static final String SERVER_FLOW_CONFIG_DATA_ID_POSTFIX = "-cs-flow-config";public static final String SERVER_NAMESPACE_SET_DATA_ID_POSTFIX = "-cs-namespace-set";//超时时间public static final int READ_TIMEOUT = 3000;private NacosConfigUtil() {}/*** RuleEntity----->Rule* @param entities* @return*/public static String convertToRule(List<? extends RuleEntity> entities){return JSON.toJSONString(entities.stream().map(r -> r.toRule()).collect(Collectors.toList()));}/*** ApiDefinitionEntity----->ApiDefinition* @param entities* @return*/public static String convertToApiDefinition(List<? extends ApiDefinitionEntity> entities){return JSON.toJSONString(entities.stream().map(r -> r.toApiDefinition()).collect(Collectors.toList()));}/*** GatewayFlowRuleEntity----->GatewayFlowRule* @param entities* @return*/public static String convertToGatewayFlowRule(List<? extends GatewayFlowRuleEntity> entities){return JSON.toJSONString(entities.stream().map(r -> r.toGatewayFlowRule()).collect(Collectors.toList()));}}

（5）dashboard配置文件修改

1.添加bootstrap.yml配置文件

spring:cloud:nacos:discovery:server-addr: 127.0.0.1:8848username: nacospassword: nacosnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224c# group: DEFAULT_GROUPconfig:server-addr: 127.0.0.1:8848username: nacospassword: nacosnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224c# group: DEFAULT_GROUPfile-extension: yml  # 必须修改成对应尾序refresh-enabled: trueprofiles:active: devapplication:name: scm-sentinel-dashboard

2.nacos中添加scm-sentinel-dashboard-dev.yml配置文件，这里是将原来的application.properties配置放入到nacos配置中心中管理

server:port: 8099max-http-header-size: 10240tomcat:uri-encoding: UTF-8min-spare-threads: 50max-threads: 500max-connections: 3000accept-count: 10000connection-timeout: 12000servlet:encoding:force: truecharset: UTF-8enabled: truesession: cookie: name: sentinel_dashboard_cookie
logging: level: org: springframework: web: INFOfile:# name: ${user.home}/logs/csp/sentinel-dashboard.logname: /mnt/server-log/scm-sentinel-dashboard/sentinel-dashboard.logpattern: file: '%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n'
auth: filter: exclude-urls: /,/auth/login,/auth/logout,/registry/machine,/versionexclude-url-suffixes: htm,html,js,css,map,ico,ttf,woff,pngusername: sentinelpassword: sentinelsentinel: dashboard: version: '@project.version@'

2.改造client

1.gateway网关改造

（1）引入pom依赖

<!-- gateway接入sentinel  --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId><version>${spring.cloud.alibaba.version}</version></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-sentinel</artifactId><version>${spring.cloud.alibaba.version}</version></dependency><!--sentinel持久化 --><dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-datasource-nacos</artifactId><version>1.8.4</version></dependency>

（2）配置文件bootstrap.yml

spring:cloud:nacos:discovery:server-addr: 127.0.0.1:8848username: nacospassword: nacosnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224c# group: DEFAULT_GROUPconfig:server-addr: 127.0.0.1:8848username: nacospassword: nacosnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224c# group: DEFAULT_GROUPfile-extension: yml  # 必须修改成对应尾序refresh-enabled: trueshared-configs[0]:data-id: scm-gateway-sentinel.ymlrefresh: trueprofiles:active: devapplication:name: scm-open-gateway

（2）nacos中的配置文件scm-gateway-sentinel.yml，这里面的spring.application.name对象项目名称，注意rule-type表示流控类型

spring:cloud:nacos:sentinel:transport:dashboard: 127.0.0.1:8099# 该配置能够使dashboard主动发现该应用eager: truedatasource:gateway-api:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-api-rulesgroupId: SENTINEL_GROUP   # 注意groupId对应Sentinel Dashboard中的定义namespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: gw-api-groupflow-rules:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-flow-rulesgroupId: SENTINEL_GROUP   # 注意groupId对应Sentinel Dashboard中的定义namespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: flowdegrade-rules:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-degrade-rulesgroupId: SENTINEL_GROUPnamespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: degradeparam-flow-rules:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-param-flow-rulesgroupId: SENTINEL_GROUPnamespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: param-flowauthority-rules:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-authority-rulesgroupId: SENTINEL_GROUPnamespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: authoritysystem-rules:nacos:server-addr: ${spring.cloud.nacos.discovery.server-addr}dataId: ${spring.application.name}-gateway-system-rulesgroupId: SENTINEL_GROUPnamespace: ${spring.cloud.nacos.discovery.namespace}data-type: jsonrule-type: system

（3） rule-type: gw-api-group对应的是网关中的API管理，这里用来与流控规则中API分钟的API名称对应

在这里插入图片描述

2.普通服务改造

（1）添加pom依赖

 <!-- nacos服务注册与发现 --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><!-- openfeign 远程调用 --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId></dependency><!--sentinel --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-sentinel</artifactId></dependency>

（1）添加bootstrap.yml流控规则nacoa配置和sentinel控制台连接配置

server:port: 8806spring:application:name: mall-user-sentinel-rule-push-demo  #微服务名称#配置nacos注册中心地址cloud:nacos:discovery:server-addr: 127.0.0.1:8848username: nacospassword: nacosnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224csentinel:transport:# 添加sentinel的控制台地址dashboard: 127.0.0.1:8099# 指定应用与Sentinel控制台交互的端口，应用本地会起一个该端口占用的HttpServer#port: 8719datasource:
#        ds1:   #名称自定义，唯一
#          nacos:
#            server-addr: 127.0.0.1:8848
#            dataId: ${spring.application.name}-flow
#            groupId: DEFAULT_GROUP
#            data-type: json
#            rule-type: flowflow-rules:nacos:server-addr: 127.0.0.1:8848dataId: ${spring.application.name}-flow-rulesgroupId: SENTINEL_GROUP   # 注意groupId对应Sentinel Dashboard中的定义namespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224cdata-type: jsonrule-type: flowdegrade-rules:nacos:server-addr: 127.0.0.1:8848dataId: ${spring.application.name}-degrade-rulesgroupId: SENTINEL_GROUPnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224cdata-type: jsonrule-type: degradeparam-flow-rules:nacos:server-addr: 127.0.0.1:8848dataId: ${spring.application.name}-param-flow-rulesgroupId: SENTINEL_GROUPnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224cdata-type: jsonrule-type: param-flowauthority-rules:nacos:server-addr: 127.0.0.1:8848dataId: ${spring.application.name}-authority-rulesgroupId: SENTINEL_GROUPnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224cdata-type: jsonrule-type: authoritysystem-rules:nacos:server-addr: 127.0.0.1:8848dataId: ${spring.application.name}-system-rulesgroupId: SENTINEL_GROUPnamespace: c5b4bd27-4a9c-487f-b3fb-c6a768ee224cdata-type: jsonrule-type: systemmain:allow-bean-definition-overriding: true#暴露actuator端点   http://localhost:8800/actuator/sentinel
management:endpoints:web:exposure:include: '*'feign:sentinel:enabled: true   #开启sentinel对feign的支持 默认false