小白学习sentinel dashboard持久化到nacos

前言

sentinel-dashboard官方未提供动态数据源的支持，需要自行整合。官方虽未提供实现，但是却提供了整合样例代码，从而实现dashboard与nacos的互通。

官方描述

• 原始模式

通过 API 将规则推送至客户端并直接更新到内存中，这也意味着这些规则仅在内存态生效，应用重启之后，该规则会丢失。

• 动态规则

推荐通过动态配置源的控制台来进行规则写入和推送，而不是通过 Sentinel 客户端直接写入到动态配置源中。 在生产环境中，推荐 push 模式 ，具体可以参考：在生产环境使用 Sentinel。

注：若要使用集群流控功能，则必须对接动态规则源，否则无法正常使用。您也可以接入 AHAS Sentinel 快速接入全自动托管、高可用的集群流控能力。

Sentinel 同时还提供应用维度规则推送的示例页面（流控规则页面，前端路由为 /v2/flow），用户改造控制台对接配置中心后可直接通过 v2 页面推送规则至配置中心。Sentinel 抽取了通用接口用于向远程配置中心推送规则以及拉取规则：

• DynamicRuleProvider: 拉取规则（应用维度）
• DynamicRulePublisher: 推送规则（应用维度）

用户只需实现 DynamicRuleProvider 和 DynamicRulePublisher 接口，并在 v2 的 controller 中通过 @Qualifier 注解替换相应的 bean 即可实现应用维度推送。我们提供了 Nacos 和 Apollo 的示例，改造详情可参考 应用维度规则推送示例。

改造sentinel dashboard

1. 先通过 Github 拉取 Sentinel 源码
2. 导入到IDEA中
3. 进入 sentinel-dashboard 模块，所有的修改都在该模块下。

后端代码调整

1. 修改pom.xml，找到sentinel-datasource-nacos依赖，将scope删除或者注释掉

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

2. 修改配置文件，找到配置文件 application.properties 文件，在末尾添加一下配置

sentinel.nacos.enable=true
sentinel.nacos.server-addr=192.168.0.102:8848
sentinel.nacos.namespace=
sentinel.nacos.username=nacos
sentinel.nacos.password=nacos
sentinel.nacos.group-id=SENTINEL-GROUP

注意：如果需要将规则持久化到nacos的publish命名空间下，此处的填空就好，不要写publish，否则会导致，控制台无法查询到配置信息

3. 调整包结构

在com.alibaba.csp.sentinel.dashboard.rule包下创建nacos包，并在该包下根据以下结构新建包

├─auth #存放授权规则相关类
├─degrade #存放降级规则相关类
├─flow #存放限流规则相关类
├─gateway #存放网关限流规则相关类
│  ├─api
│  └─flow
├─param #存放热点规则相关类
└─system #存放系统规则相关类

如下图：

4. 增加配置

如上图所示，将test包下的NacosConfigUtil、NacosConfig、FlowRuleNacosPublisher、FlowRuleNacosProvider复制到刚刚新建的nacos包下，如下图所示：

5. 增加SentinelNacosProperties文件 在com.alibaba.csp.sentinel.dashboard.rule.nacos包下创建SentinelNacosProperties.java文件，代码如下：

package com.alibaba.csp.sentinel.dashboard.rule.nacos;

import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "sentinel.nacos")
@ConditionalOnProperty(name = "sentinel.nacos.enable", havingValue = "true")
public class SentinelNacosProperties {

    private String serverAddr;

    private String namespace;

    private String username;

    private String password;

    private String groupId = "SENTINEL_GROUP";

    public String getServerAddr() {
        return serverAddr;
    }

    public void setServerAddr(String serverAddr) {
        this.serverAddr = serverAddr;
    }

    public String getNamespace() {
        return namespace;
    }

    public void setNamespace(String namespace) {
        this.namespace = namespace;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }
}

6. 修改NacosConfig文件，修改后的代码如下

/*
 * 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.*;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.fastjson.JSON;
import com.alibaba.nacos.api.PropertyKeyConst;
import com.alibaba.nacos.api.config.ConfigFactory;
import com.alibaba.nacos.api.config.ConfigService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.List;
import java.util.Properties;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Configuration
public class NacosConfig {

    //====================流控规则 Converter====================
    @Bean
    public Converter<List<FlowRuleEntity>, String> flowRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<FlowRuleEntity>> flowRuleEntityDecoder() {
        return s -> JSON.parseArray(s, FlowRuleEntity.class);
    }

    //====================降级规则 Converter====================
    @Bean
    public Converter<List<DegradeRuleEntity>, String> degradeRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<DegradeRuleEntity>> degradeRuleEntityDecoder() {
        return s -> JSON.parseArray(s, DegradeRuleEntity.class);
    }

    //====================热点规则 Converter====================
    @Bean
    public Converter<List<ParamFlowRuleEntity>, String> paramsRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<ParamFlowRuleEntity>> paramsRuleEntityDecoder() {
        return s -> JSON.parseArray(s, ParamFlowRuleEntity.class);
    }

    //====================系统规则 Converter====================
    @Bean
    public Converter<List<SystemRuleEntity>, String> systemRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<SystemRuleEntity>> systemRuleEntityDecoder() {
        return s -> JSON.parseArray(s, SystemRuleEntity.class);
    }

    //====================授权规则 Converter====================
    @Bean
    public Converter<List<AuthorityRuleEntity>, String> authRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    Converter<String, List<AuthorityRuleEntity>> authRuleEntityDecoder() {
        return s -> JSON.parseArray(s, AuthorityRuleEntity.class);
    }

    //====================网关API限流规则 Converter====================
    @Bean
    public Converter<List<ApiDefinitionEntity>, String> apiDefinitionEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<ApiDefinitionEntity>> apiDefinitionEntityDecoder() {
        return s -> JSON.parseArray(s, ApiDefinitionEntity.class);
    }

    //====================网关限流规则 Converter====================
    @Bean
    public Converter<List<GatewayFlowRuleEntity>, String> gatewayFlowRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    @Bean
    public Converter<String, List<GatewayFlowRuleEntity>> gatewayFlowRuleEntityDecoder() {
        return s -> JSON.parseArray(s, GatewayFlowRuleEntity.class);
    }

    @Bean
    public ConfigService nacosConfigService(SentinelNacosProperties sentinelNacosProperties) throws Exception {
        Properties properties = new Properties();
        // nacos 地址
        properties.put(PropertyKeyConst.SERVER_ADDR, sentinelNacosProperties.getServerAddr());
        // 命令空间
        properties.put(PropertyKeyConst.NAMESPACE, sentinelNacosProperties.getNamespace());
        // nacos 账号
        properties.put(PropertyKeyConst.USERNAME, sentinelNacosProperties.getUsername());
        // nacos 账号密码
        properties.put(PropertyKeyConst.PASSWORD, sentinelNacosProperties.getPassword());
        return ConfigFactory.createConfigService(properties);
    }

//    @Bean
//    public ConfigService nacosConfigService() throws Exception {
//        return ConfigFactory.createConfigService("localhost");
//    }
}

NacosConfig主要做两件事：

• 注入Convert转换器，将FlowRuleEntity等相关规则实体类转化成FlowRule等对应的规则类，以及反向转化
• 注入Nacos配置服务ConfigService

7. 修改NacosConfigUtil文件，修改后的代码如下

/*
 * 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;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
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-rules";
    public static final String DEGRADE_DATA_ID_POSTFIX = "-degrade-rules";
    public static final String SYS_DATA_ID_POSTFIX = "-system-rules";
    public static final String AUTH_DATA_ID_POSTFIX = "-auth-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";

    public static final String GATEWAY_FLOW_DATA_ID_POSTFIX = "-gateway-flow-rules";
    public static final String GATEWAY_API_DATA_ID_POSTFIX = "-gateway-api-rules";

    private NacosConfigUtil() {}
}

8. 在auth包下创建以下两个类

• AuthorityRuleNacosProvider: 用于从nacos拉取配置
• AuthorityRuleNacosPublisher: 用于控制台向nacos推送配置

参照上面拷贝的FlowRuleNacosProvider和FlowRuleNacosPublisher文件中的代码创建以上两个文件，完整的代码如下。

• FlowRuleNacosProvider完整代码如下：

package com.alibaba.csp.sentinel.dashboard.rule.nacos.auth;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.AuthorityRuleEntity;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.nacos.NacosConfigUtil;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.csp.sentinel.util.StringUtil;
import com.alibaba.nacos.api.config.ConfigService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

@Component("authRuleNacosProvider")
public class AuthorityRuleNacosProvider implements DynamicRuleProvider<List<AuthorityRuleEntity>> {

    private static final Logger LOGGER = LoggerFactory.getLogger(AuthorityRuleNacosProvider.class);

    @Autowired
    private ConfigService configService;

    @Autowired
    private Converter<String, List<AuthorityRuleEntity>> converter;

    @Override
    public List<AuthorityRuleEntity> getRules(String appName) throws Exception {
        String rules = configService.getConfig(appName + NacosConfigUtil.AUTH_DATA_ID_POSTFIX,
                NacosConfigUtil.GROUP_ID, 3000);
        LOGGER.info("get auth rule from nacos, rules : {}", rules);
        if (StringUtil.isEmpty(rules)) {
            return new ArrayList<>();
        }
        return converter.convert(rules);
    }
}

• FlowRuleNacosPublisher完整代码如下：

package com.alibaba.csp.sentinel.dashboard.rule.nacos.auth;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.AuthorityRuleEntity;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.dashboard.rule.nacos.NacosConfigUtil;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.csp.sentinel.util.AssertUtil;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.config.ConfigType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;

@Component("authRuleNacosPublisher")
public class AuthorityRuleNacosPublisher implements DynamicRulePublisher<List<AuthorityRuleEntity>> {

    private static final Logger LOGGER = LoggerFactory.getLogger(AuthorityRuleNacosPublisher.class);

    @Autowired
    private ConfigService configService;

    @Autowired
    private Converter<List<AuthorityRuleEntity>, String> converter;

    @Override
    public void publish(String app, List<AuthorityRuleEntity> rules) throws Exception {
        AssertUtil.notEmpty(app, "app name cannot be empty");
        if (rules == null) {
            return;
        }
        String convertedRule = converter.convert(rules);
        LOGGER.info("sentinel dashboard publisher auth rules : {}", convertedRule);
        configService.publishConfig(app + NacosConfigUtil.AUTH_DATA_ID_POSTFIX,
                NacosConfigUtil.GROUP_ID, convertedRule, ConfigType.JSON.getType());
    }
}

依次创建降级规则、网关规则、热点规则、系统规则等文件。代码大同小异，不同点就是Converter<List<AuthorityRuleEntity>, String> converter中的entity不同，具体的可以回看NacosConfig中的配置，另一个就是data-id不同。这里就不一一罗列代码了。

最终的代码结构如下图：

9. 修改FlowControllerV2

修改 com.alibaba.csp.sentinel.dashboard.controller.v2 包下的FlowControllerV2，注释掉原来的ruleProvider和rulePublisher，引入我们自己创建的。内容如下：

/*
 * 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.controller.v2;

import java.util.Date;
import java.util.List;

import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
import com.alibaba.csp.sentinel.util.StringUtil;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
import com.alibaba.csp.sentinel.dashboard.repository.rule.InMemoryRuleRepositoryAdapter;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.dashboard.domain.Result;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * Flow rule controller (v2).
 *
 * @author Eric Zhao
 * @since 1.4.0
 */
@RestController
@RequestMapping(value = "/v2/flow")
public class FlowControllerV2 {

    private final Logger logger = LoggerFactory.getLogger(FlowControllerV2.class);

    @Autowired
    private InMemoryRuleRepositoryAdapter<FlowRuleEntity> repository;

//    @Autowired
//    @Qualifier("flowRuleDefaultProvider")
//    private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;
//    @Autowired
//    @Qualifier("flowRuleDefaultPublisher")
//    private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;

    @Autowired
    @Qualifier("flowRuleNacosProvider")
    private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;
    @Autowired
    @Qualifier("flowRuleNacosPublisher")
    private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;

    @GetMapping("/rules")
    @AuthAction(PrivilegeType.READ_RULE)
    public Result<List<FlowRuleEntity>> apiQueryMachineRules(@RequestParam String app) {

        if (StringUtil.isEmpty(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        try {
            List<FlowRuleEntity> rules = ruleProvider.getRules(app);
            if (rules != null && !rules.isEmpty()) {
                for (FlowRuleEntity entity : rules) {
                    entity.setApp(app);
                    if (entity.getClusterConfig() != null && entity.getClusterConfig().getFlowId() != null) {
                        entity.setId(entity.getClusterConfig().getFlowId());
                    }
                }
            }
            rules = repository.saveAll(rules);
            return Result.ofSuccess(rules);
        } catch (Throwable throwable) {
            logger.error("Error when querying flow rules", throwable);
            return Result.ofThrowable(-1, throwable);
        }
    }

    private <R> Result<R> checkEntityInternal(FlowRuleEntity entity) {
        if (entity == null) {
            return Result.ofFail(-1, "invalid body");
        }
        if (StringUtil.isBlank(entity.getApp())) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        if (StringUtil.isBlank(entity.getLimitApp())) {
            return Result.ofFail(-1, "limitApp can't be null or empty");
        }
        if (StringUtil.isBlank(entity.getResource())) {
            return Result.ofFail(-1, "resource can't be null or empty");
        }
        if (entity.getGrade() == null) {
            return Result.ofFail(-1, "grade can't be null");
        }
        if (entity.getGrade() != 0 && entity.getGrade() != 1) {
            return Result.ofFail(-1, "grade must be 0 or 1, but " + entity.getGrade() + " got");
        }
        if (entity.getCount() == null || entity.getCount() < 0) {
            return Result.ofFail(-1, "count should be at lease zero");
        }
        if (entity.getStrategy() == null) {
            return Result.ofFail(-1, "strategy can't be null");
        }
        if (entity.getStrategy() != 0 && StringUtil.isBlank(entity.getRefResource())) {
            return Result.ofFail(-1, "refResource can't be null or empty when strategy!=0");
        }
        if (entity.getControlBehavior() == null) {
            return Result.ofFail(-1, "controlBehavior can't be null");
        }
        int controlBehavior = entity.getControlBehavior();
        if (controlBehavior == 1 && entity.getWarmUpPeriodSec() == null) {
            return Result.ofFail(-1, "warmUpPeriodSec can't be null when controlBehavior==1");
        }
        if (controlBehavior == 2 && entity.getMaxQueueingTimeMs() == null) {
            return Result.ofFail(-1, "maxQueueingTimeMs can't be null when controlBehavior==2");
        }
        if (entity.isClusterMode() && entity.getClusterConfig() == null) {
            return Result.ofFail(-1, "cluster config should be valid");
        }
        return null;
    }

    @PostMapping("/rule")
    @AuthAction(value = AuthService.PrivilegeType.WRITE_RULE)
    public Result<FlowRuleEntity> apiAddFlowRule(@RequestBody FlowRuleEntity entity) {

        Result<FlowRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }
        entity.setId(null);
        Date date = new Date();
        entity.setGmtCreate(date);
        entity.setGmtModified(date);
        entity.setLimitApp(entity.getLimitApp().trim());
        entity.setResource(entity.getResource().trim());
        try {
            entity = repository.save(entity);
            publishRules(entity.getApp());
        } catch (Throwable throwable) {
            logger.error("Failed to add flow rule", throwable);
            return Result.ofThrowable(-1, throwable);
        }
        return Result.ofSuccess(entity);
    }

    @PutMapping("/rule/{id}")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)

    public Result<FlowRuleEntity> apiUpdateFlowRule(@PathVariable("id") Long id,
                                                    @RequestBody FlowRuleEntity entity) {
        if (id == null || id <= 0) {
            return Result.ofFail(-1, "Invalid id");
        }
        FlowRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofFail(-1, "id " + id + " does not exist");
        }
        if (entity == null) {
            return Result.ofFail(-1, "invalid body");
        }

        entity.setApp(oldEntity.getApp());
        entity.setIp(oldEntity.getIp());
        entity.setPort(oldEntity.getPort());
        Result<FlowRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }

        entity.setId(id);
        Date date = new Date();
        entity.setGmtCreate(oldEntity.getGmtCreate());
        entity.setGmtModified(date);
        try {
            entity = repository.save(entity);
            if (entity == null) {
                return Result.ofFail(-1, "save entity fail");
            }
            publishRules(oldEntity.getApp());
        } catch (Throwable throwable) {
            logger.error("Failed to update flow rule", throwable);
            return Result.ofThrowable(-1, throwable);
        }
        return Result.ofSuccess(entity);
    }

    @DeleteMapping("/rule/{id}")
    @AuthAction(PrivilegeType.DELETE_RULE)
    public Result<Long> apiDeleteRule(@PathVariable("id") Long id) {
        if (id == null || id <= 0) {
            return Result.ofFail(-1, "Invalid id");
        }
        FlowRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofSuccess(null);
        }

        try {
            repository.delete(id);
            publishRules(oldEntity.getApp());
        } catch (Exception e) {
            return Result.ofFail(-1, e.getMessage());
        }
        return Result.ofSuccess(id);
    }

    private void publishRules(/*@NonNull*/ String app) throws Exception {
        List<FlowRuleEntity> rules = repository.findAllByApp(app);
        rulePublisher.publish(app, rules);
    }
}

10. 修改AuthorityRuleController

修改 com.alibaba.csp.sentinel.dashboard.controller 包下的AuthorityRuleController，需要增加以及改动的代码，已经在代码上加了注释，请仔细阅读。内容如下：

/*
 * 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.controller;

import java.util.Date;
import java.util.List;

import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
import com.alibaba.csp.sentinel.dashboard.client.SentinelApiClient;
import com.alibaba.csp.sentinel.dashboard.discovery.AppManagement;
import com.alibaba.csp.sentinel.dashboard.discovery.MachineInfo;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.slots.block.RuleConstant;
import com.alibaba.csp.sentinel.util.StringUtil;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.AuthorityRuleEntity;
import com.alibaba.csp.sentinel.dashboard.domain.Result;
import com.alibaba.csp.sentinel.dashboard.repository.rule.RuleRepository;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author Eric Zhao
 * @since 0.2.1
 */
@RestController
@RequestMapping(value = "/authority")
public class AuthorityRuleController {

    private final Logger logger = LoggerFactory.getLogger(AuthorityRuleController.class);

    @Autowired
    private SentinelApiClient sentinelApiClient;
    @Autowired
    private RuleRepository<AuthorityRuleEntity, Long> repository;
    @Autowired
    private AppManagement appManagement;

    @Autowired
    @Qualifier("authRuleNacosProvider")
    private DynamicRuleProvider<List<AuthorityRuleEntity>> ruleProvider;

    @Autowired
    @Qualifier("authRuleNacosPublisher")
    private DynamicRulePublisher<List<AuthorityRuleEntity>> rulePublisher;

    @GetMapping("/rules")
    @AuthAction(PrivilegeType.READ_RULE)
    public Result<List<AuthorityRuleEntity>> apiQueryAllRulesForMachine(@RequestParam String app,
                                                                        @RequestParam String ip,
                                                                        @RequestParam Integer port) {
        if (StringUtil.isEmpty(app)) {
            return Result.ofFail(-1, "app cannot be null or empty");
        }
        if (StringUtil.isEmpty(ip)) {
            return Result.ofFail(-1, "ip cannot be null or empty");
        }
        if (port == null || port <= 0) {
            return Result.ofFail(-1, "Invalid parameter: port");
        }
        if (!appManagement.isValidMachineOfApp(app, ip)) {
            return Result.ofFail(-1, "given ip does not belong to given app");
        }
        try {
//            List<AuthorityRuleEntity> rules = sentinelApiClient.fetchAuthorityRulesOfMachine(app, ip, port);
            List<AuthorityRuleEntity> rules = ruleProvider.getRules(app);
            // 尤其注意增加以下if逻辑，不然运行时会报错，这里踩的坑
            if (rules != null && !rules.isEmpty()) {
                for (AuthorityRuleEntity entity : rules) {
                    entity.setApp(app);
                }
            }

            rules = repository.saveAll(rules);
            return Result.ofSuccess(rules);
        } catch (Throwable throwable) {
            logger.error("Error when querying authority rules", throwable);
            return Result.ofFail(-1, throwable.getMessage());
        }
    }

    private <R> Result<R> checkEntityInternal(AuthorityRuleEntity entity) {
        if (entity == null) {
            return Result.ofFail(-1, "bad rule body");
        }
        if (StringUtil.isBlank(entity.getApp())) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        if (StringUtil.isBlank(entity.getIp())) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        if (entity.getPort() == null || entity.getPort() <= 0) {
            return Result.ofFail(-1, "port can't be null");
        }
        if (entity.getRule() == null) {
            return Result.ofFail(-1, "rule can't be null");
        }
        if (StringUtil.isBlank(entity.getResource())) {
            return Result.ofFail(-1, "resource name cannot be null or empty");
        }
        if (StringUtil.isBlank(entity.getLimitApp())) {
            return Result.ofFail(-1, "limitApp should be valid");
        }
        if (entity.getStrategy() != RuleConstant.AUTHORITY_WHITE
            && entity.getStrategy() != RuleConstant.AUTHORITY_BLACK) {
            return Result.ofFail(-1, "Unknown strategy (must be blacklist or whitelist)");
        }
        return null;
    }

    @PostMapping("/rule")
    @AuthAction(PrivilegeType.WRITE_RULE)
    public Result<AuthorityRuleEntity> apiAddAuthorityRule(@RequestBody AuthorityRuleEntity entity) {
        Result<AuthorityRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }
        entity.setId(null);
        Date date = new Date();
        entity.setGmtCreate(date);
        entity.setGmtModified(date);
        try {
            entity = repository.save(entity);
        } catch (Throwable throwable) {
            logger.error("Failed to add authority rule", throwable);
            return Result.ofThrowable(-1, throwable);
        }
        if (!publishRules(entity.getApp(), entity.getIp(), entity.getPort())) {
            logger.info("Publish authority rules failed after rule add");
        }
        return Result.ofSuccess(entity);
    }

    @PutMapping("/rule/{id}")
    @AuthAction(PrivilegeType.WRITE_RULE)
    public Result<AuthorityRuleEntity> apiUpdateParamFlowRule(@PathVariable("id") Long id,
                                                              @RequestBody AuthorityRuleEntity entity) {
        if (id == null || id <= 0) {
            return Result.ofFail(-1, "Invalid id");
        }
        Result<AuthorityRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }
        entity.setId(id);
        Date date = new Date();
        entity.setGmtCreate(null);
        entity.setGmtModified(date);
        try {
            entity = repository.save(entity);
            if (entity == null) {
                return Result.ofFail(-1, "Failed to save authority rule");
            }
        } catch (Throwable throwable) {
            logger.error("Failed to save authority rule", throwable);
            return Result.ofThrowable(-1, throwable);
        }
        if (!publishRules(entity.getApp(), entity.getIp(), entity.getPort())) {
            logger.info("Publish authority rules failed after rule update");
        }
        return Result.ofSuccess(entity);
    }

    @DeleteMapping("/rule/{id}")
    @AuthAction(PrivilegeType.DELETE_RULE)
    public Result<Long> apiDeleteRule(@PathVariable("id") Long id) {
        if (id == null) {
            return Result.ofFail(-1, "id cannot be null");
        }
        AuthorityRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofSuccess(null);
        }
        try {
            repository.delete(id);
        } catch (Exception e) {
            return Result.ofFail(-1, e.getMessage());
        }
        if (!publishRules(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort())) {
            logger.error("Publish authority rules failed after rule delete");
        }
        return Result.ofSuccess(id);
    }

    private boolean publishRules(String app, String ip, Integer port) {
        List<AuthorityRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
//        return sentinelApiClient.setAuthorityRuleOfMachine(app, ip, port, rules);

        try {
            rulePublisher.publish(app, rules);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
}

同时修改DegradeController、GatewayApiController、GatewayFlowRuleController、SystemController这几个controller，改动的位置大致相同，分别注入对应的provider和publisher，请自行修改。

11. 修改ParamFlowRuleController

修改 com.alibaba.csp.sentinel.dashboard.controller 包下的ParamFlowRuleController，需要增加以及改动的代码，已经在代码上加了注释，ParamFlowRuleController原先内容使用的是CompletableFuture，内容如下：

/*
 * 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.controller;

import java.util.Date;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
import com.alibaba.csp.sentinel.dashboard.client.CommandNotFoundException;
import com.alibaba.csp.sentinel.dashboard.client.SentinelApiClient;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.AuthorityRuleEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.DegradeRuleEntity;
import com.alibaba.csp.sentinel.dashboard.discovery.AppManagement;
import com.alibaba.csp.sentinel.dashboard.discovery.MachineInfo;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.slots.block.RuleConstant;
import com.alibaba.csp.sentinel.util.StringUtil;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.SentinelVersion;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.ParamFlowRuleEntity;
import com.alibaba.csp.sentinel.dashboard.domain.Result;
import com.alibaba.csp.sentinel.dashboard.repository.rule.RuleRepository;
import com.alibaba.csp.sentinel.dashboard.util.VersionUtils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author Eric Zhao
 * @since 0.2.1
 */
@RestController
@RequestMapping(value = "/paramFlow")
public class ParamFlowRuleController {

    private final Logger logger = LoggerFactory.getLogger(ParamFlowRuleController.class);

    @Autowired
    private SentinelApiClient sentinelApiClient;
    @Autowired
    private AppManagement appManagement;
    @Autowired
    private RuleRepository<ParamFlowRuleEntity, Long> repository;

    @Autowired
    @Qualifier("paramRuleNacosProvider")
    private DynamicRuleProvider<List<ParamFlowRuleEntity>> ruleProvider;

    @Autowired
    @Qualifier("paramRuleNacosPublisher")
    private DynamicRulePublisher<List<ParamFlowRuleEntity>> rulePublisher;

    private boolean checkIfSupported(String app, String ip, int port) {
        try {
            return Optional.ofNullable(appManagement.getDetailApp(app))
                .flatMap(e -> e.getMachine(ip, port))
                .flatMap(m -> VersionUtils.parseVersion(m.getVersion())
                    .map(v -> v.greaterOrEqual(version020)))
                .orElse(true);
            // If error occurred or cannot retrieve machine info, return true.
        } catch (Exception ex) {
            return true;
        }
    }

    @GetMapping("/rules")
    @AuthAction(PrivilegeType.READ_RULE)
    public Result<List<ParamFlowRuleEntity>> apiQueryAllRulesForMachine(@RequestParam String app,
                                                                        @RequestParam String ip,
                                                                        @RequestParam Integer port) {
        if (StringUtil.isEmpty(app)) {
            return Result.ofFail(-1, "app cannot be null or empty");
        }
        if (StringUtil.isEmpty(ip)) {
            return Result.ofFail(-1, "ip cannot be null or empty");
        }
        if (port == null || port <= 0) {
            return Result.ofFail(-1, "Invalid parameter: port");
        }
        if (!appManagement.isValidMachineOfApp(app, ip)) {
            return Result.ofFail(-1, "given ip does not belong to given app");
        }
        if (!checkIfSupported(app, ip, port)) {
            return unsupportedVersion();
        }
        try {
//            return sentinelApiClient.fetchParamFlowRulesOfMachine(app, ip, port)
//                .thenApply(repository::saveAll)
//                .thenApply(Result::ofSuccess)
//                .get();
            List<ParamFlowRuleEntity> rules = ruleProvider.getRules(app);
            // 尤其注意增加以下if逻辑，不然运行时会报错，这里踩的坑
            if (rules != null && !rules.isEmpty()) {
                for (ParamFlowRuleEntity entity : rules) {
                    entity.setApp(app);
                }
            }

            rules = repository.saveAll(rules);
            return Result.ofSuccess(rules);
        } catch (ExecutionException ex) {
            logger.error("Error when querying parameter flow rules", ex.getCause());
            if (isNotSupported(ex.getCause())) {
                return unsupportedVersion();
            } else {
                return Result.ofThrowable(-1, ex.getCause());
            }
        } catch (Throwable throwable) {
            logger.error("Error when querying parameter flow rules", throwable);
            return Result.ofFail(-1, throwable.getMessage());
        }
    }

    private boolean isNotSupported(Throwable ex) {
        return ex instanceof CommandNotFoundException;
    }

    @PostMapping("/rule")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<ParamFlowRuleEntity> apiAddParamFlowRule(@RequestBody ParamFlowRuleEntity entity) {
        Result<ParamFlowRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }
        if (!checkIfSupported(entity.getApp(), entity.getIp(), entity.getPort())) {
            return unsupportedVersion();
        }
        entity.setId(null);
        entity.getRule().setResource(entity.getResource().trim());
        Date date = new Date();
        entity.setGmtCreate(date);
        entity.setGmtModified(date);
        try {
            entity = repository.save(entity);
//            publishRules(entity.getApp(), entity.getIp(), entity.getPort()).get();
            publishRules(entity.getApp());

            return Result.ofSuccess(entity);
        } catch (ExecutionException ex) {
            logger.error("Error when adding new parameter flow rules", ex.getCause());
            if (isNotSupported(ex.getCause())) {
                return unsupportedVersion();
            } else {
                return Result.ofThrowable(-1, ex.getCause());
            }
        } catch (Throwable throwable) {
            logger.error("Error when adding new parameter flow rules", throwable);
            return Result.ofFail(-1, throwable.getMessage());
        }
    }

    private <R> Result<R> checkEntityInternal(ParamFlowRuleEntity entity) {
        if (entity == null) {
            return Result.ofFail(-1, "bad rule body");
        }
        if (StringUtil.isBlank(entity.getApp())) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        if (StringUtil.isBlank(entity.getIp())) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        if (entity.getPort() == null || entity.getPort() <= 0) {
            return Result.ofFail(-1, "port can't be null");
        }
        if (entity.getRule() == null) {
            return Result.ofFail(-1, "rule can't be null");
        }
        if (StringUtil.isBlank(entity.getResource())) {
            return Result.ofFail(-1, "resource name cannot be null or empty");
        }
        if (entity.getCount() < 0) {
            return Result.ofFail(-1, "count should be valid");
        }
        if (entity.getGrade() != RuleConstant.FLOW_GRADE_QPS) {
            return Result.ofFail(-1, "Unknown mode (blockGrade) for parameter flow control");
        }
        if (entity.getParamIdx() == null || entity.getParamIdx() < 0) {
            return Result.ofFail(-1, "paramIdx should be valid");
        }
        if (entity.getDurationInSec() <= 0) {
            return Result.ofFail(-1, "durationInSec should be valid");
        }
        if (entity.getControlBehavior() < 0) {
            return Result.ofFail(-1, "controlBehavior should be valid");
        }
        return null;
    }

    @PutMapping("/rule/{id}")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<ParamFlowRuleEntity> apiUpdateParamFlowRule(@PathVariable("id") Long id,
                                                              @RequestBody ParamFlowRuleEntity entity) {
        if (id == null || id <= 0) {
            return Result.ofFail(-1, "Invalid id");
        }
        ParamFlowRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofFail(-1, "id " + id + " does not exist");
        }

        Result<ParamFlowRuleEntity> checkResult = checkEntityInternal(entity);
        if (checkResult != null) {
            return checkResult;
        }
        if (!checkIfSupported(entity.getApp(), entity.getIp(), entity.getPort())) {
            return unsupportedVersion();
        }
        entity.setId(id);
        Date date = new Date();
        entity.setGmtCreate(oldEntity.getGmtCreate());
        entity.setGmtModified(date);
        try {
            entity = repository.save(entity);
//            publishRules(entity.getApp(), entity.getIp(), entity.getPort()).get();
            publishRules(oldEntity.getApp());

            return Result.ofSuccess(entity);
        } catch (ExecutionException ex) {
            logger.error("Error when updating parameter flow rules, id=" + id, ex.getCause());
            if (isNotSupported(ex.getCause())) {
                return unsupportedVersion();
            } else {
                return Result.ofThrowable(-1, ex.getCause());
            }
        } catch (Throwable throwable) {
            logger.error("Error when updating parameter flow rules, id=" + id, throwable);
            return Result.ofFail(-1, throwable.getMessage());
        }
    }

    @DeleteMapping("/rule/{id}")
    @AuthAction(PrivilegeType.DELETE_RULE)
    public Result<Long> apiDeleteRule(@PathVariable("id") Long id) {
        if (id == null) {
            return Result.ofFail(-1, "id cannot be null");
        }
        ParamFlowRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofSuccess(null);
        }

        try {
            repository.delete(id);
            publishRules(oldEntity.getApp());
//            publishRules(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort()).get();
            return Result.ofSuccess(id);
        } catch (ExecutionException ex) {
            logger.error("Error when deleting parameter flow rules", ex.getCause());
            if (isNotSupported(ex.getCause())) {
                return unsupportedVersion();
            } else {
                return Result.ofThrowable(-1, ex.getCause());
            }
        } catch (Throwable throwable) {
            logger.error("Error when deleting parameter flow rules", throwable);
            return Result.ofFail(-1, throwable.getMessage());
        }
    }

//    private CompletableFuture<Void> publishRules(String app, String ip, Integer port) {
//        List<ParamFlowRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
//        return sentinelApiClient.setParamFlowRuleOfMachine(app, ip, port, rules);
//    }
    private void publishRules(String app) throws Exception {
        List<ParamFlowRuleEntity> rules = repository.findAllByApp(app);
        rulePublisher.publish(app, rules);
    }

    private <R> Result<R> unsupportedVersion() {
        return Result.ofFail(4041,
            "Sentinel client not supported for parameter flow control (unsupported version or dependency absent)");
    }

    private final SentinelVersion version020 = new SentinelVersion().setMinorVersion(2);
}

前端代码修改

1. sidebar.html

找到webapp/resources/app/scripts/directives/sidebar/sidebar.html文件，找到以下代码：

<li ui-sref-active="active" ng-if="!entry.isGateway">
  <a ui-sref="dashboard.flowV1({app: entry.app})">
    <i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控规则</a>
</li>

修改为：

<li ui-sref-active="active" ng-if="!entry.isGateway">
    <a ui-sref="dashboard.flow({app: entry.app})">
        <i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控规则</a>
</li>

2. flow_service_v1.js

找到webapp/resources/app/scripts/services/flow_service_v1.js文件，找到以下代码：

this.newRule = function (rule) {
        var param = {
            resource: rule.resource,
            limitApp: rule.limitApp,
            grade: rule.grade,
            count: rule.count,
            strategy: rule.strategy,
            refResource: rule.refResource,
            controlBehavior: rule.controlBehavior,
            warmUpPeriodSec: rule.warmUpPeriodSec,
            maxQueueingTimeMs: rule.maxQueueingTimeMs,
            app: rule.app,
            ip: rule.ip,
            port: rule.port
        };

        return $http({
            url: '/v1/flow/rule',
            data: rule,
            method: 'POST'
        });
    };

将url由v1修改为v2，内容如下：

this.newRule = function (rule) {
        var param = {
            resource: rule.resource,
            limitApp: rule.limitApp,
            grade: rule.grade,
            count: rule.count,
            strategy: rule.strategy,
            refResource: rule.refResource,
            controlBehavior: rule.controlBehavior,
            warmUpPeriodSec: rule.warmUpPeriodSec,
            maxQueueingTimeMs: rule.maxQueueingTimeMs,
            app: rule.app,
            ip: rule.ip,
            port: rule.port
        };

        return $http({
            url: '/v2/flow/rule',
            data: rule,
            method: 'POST'
        });
    };

3. identity.js

找到webapp/resources/app/scripts/controllers/identity.js文件，找到以下代码：

function saveFlowRule() {
      if (!FlowService.checkRuleValid(flowRuleDialogScope.currentRule)) {
        return;
      }
      FlowService.newRule(flowRuleDialogScope.currentRule).success(function (data) {
        if (data.code === 0) {
          flowRuleDialog.close();
          let url = '/dashboard/flow/' + $scope.app;
          $location.path(url);
        } else {
          alert('失败：' + data.msg);
        }
      }).error((data, header, config, status) => {
          alert('未知错误');
      });
    }

修改为：

function saveFlowRule() {
      if (!FlowService.checkRuleValid(flowRuleDialogScope.currentRule)) {
        return;
      }
      FlowService.newRule(flowRuleDialogScope.currentRule).success(function (data) {
        if (data.code === 0) {
          flowRuleDialog.close();
          let url = '/dashboard/v2/flow/' + $scope.app;
          $location.path(url);
        } else {
          alert('失败：' + data.msg);
        }
      }).error((data, header, config, status) => {
          alert('未知错误');
      });
    }

4. flow_v2.html

找到webapp/resources/app/views/flow_v2.html文件，找到以下代码，将其注释掉或删掉。

<a class="btn btn-default-inverse" style="float: right; margin-right: 10px;" ui-sref="dashboard.flowV1({app: app})">
      回到单机页面
</a>

打包

• 最新的sentinel-dashboard源码使用的是release标签打包的，jdk8不支持。打开sentinel-parent的pom文件，修改如下内容：

 <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${maven.compiler.version}</version>
                <executions>
                    <execution>
                        <id>default-compile</id>
                        <configuration>
                            <source>1.8</source>
                            <target>1.8</target>
<!--                            <release>17</release>-->
                        </configuration>
                    </execution>
                    <execution>
                        <id>base-compile</id>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                        <configuration>
                            <excludes>
                                <exclude>module-info.java</exclude>
                            </excludes>
                        </configuration>
                    </execution>
                </executions>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
<!--                    <release>8</release>-->
                </configuration>
            </plugin>

• 可修改sentinel-dashboard的pom文件，将打包后的jar包名修改为sentinel-dashboard-nacos，方便知道该模块已经持久化到nacos
• 对sentinel-dashboard进行打包，然后使用maven，先clean，再package，如下图：

打包成docker镜像

1. 创建/usr/local/docker/sentinel-nacos目录

mkdir -p /usr/local/docker/sentinel-nacos

2. 进入/usr/local/docker/sentinel-nacos，并创建Dockerfile文件

vi Dockerfile

3. Dockerfile内容如下：

#java 版本
FROM openjdk:8-jre

#挂载的docker卷
VOLUME /tmp

#前者是要操作的jar包  后者自定义jar包名
ADD sentinel-dashboard-nacos.jar sentinel-dashboard-nacos.jar

#定义时区参数
ENV TZ=Asia/Shanghai

#设置时区
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo '$TZ' > /etc/timezone

#配置启动命令,-D表示设置JVM参数
ENTRYPOINT ["java","-jar","-Dserver.port=6005", "-Dcsp.sentinel.dashboard.server=192.168.0.102:6005","-Dproject.name=sentinel-dashboard","/sentinel-dashboard-nacos.jar"]

4. 打包成镜像

docker build -t sentinel-nacos .

5. 查看是否有对应的镜像

docker images

发现存在该镜像，如下图： 6. 创建并运行容器

docker run --name sentinel-nacos -p 6005:6005 -p 8719:8719 --restart=always --privileged=true -d sentinel-nacos

7. 打开浏览器，访问sentinel面板，地址为http://192.168.0.102:6005

可看到如下页面，默认用户名和密码: sentinel/sentinel

参考：

1. gitee.com/schonglin/s...
2. Sentinel Dashboard（基于1.8.1）流控规则持久化到Nacos------涉及部分Sentinel Dashboard源码改造