Sentinel1.8.6更改配置同步到nacos(项目是Gateway)

本次修改的源码在：https://gitee.com/stonic-open-source/sentinel-parent

一

下载源码地址：https://github.com/alibaba/Sentinel/releases/tag/1.8.6

二

导入idea，等待maven下载好各种依赖

三

打开sentile-dashboard这个模块，打开resources下的application.properties配置

把下列配置加进去

#你的nacos地址
nacos.server-addr=localhost:8148  
#准备把sentinel配置同步到的nacos命名空间
nacos.namespace=zixun_dev 
#你的nacos用户名
nacos.username=nacos 
#你的nacos密码
nacos.password=nacos

四

打开sentile-dashboard下的pom，把sentinel-datasource-nacos的<scope>test</scope>删掉(记得刷新一下maven)

刷新maven

五

rule文件夹下新建一个nacos目录

把图中test的NacosConfig和Util复制到nacos目录下

六

然后在nacos下新建一个NacosInfoConfig类，用于读取配置文件

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * @author 刘辉
 * @description
 * @since 2024/5/17 上午10:26
 */
@Component
@ConfigurationProperties(prefix = "nacos")
public class NacosInfoConfig {
    private String serverAddr;
    private String username;
    private String password;
    private String namespace;

    public String getServerAddr() {
        return serverAddr;
    }

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

    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 getNamespace() {
        return namespace;
    }

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

七

然后修改一下NacosConfigUtil的内容其中group_id需要和你springcloud项目配置的nacos中sentinel的groupId一致

public final class NacosConfigUtil {

    /**
     * 同步到nacos生成的groupId 没有可不填
     */
    public static final String GROUP_ID = "zixun_sentinel";

    /**
     * 同步到nacos生成的sentinel api规则的后缀
     */
    public static final String API_DATA_ID_POSTFIX = "-api-rules";
    /**
     * 同步到nacos生成的sentinel 流控规则的后缀
     */
    public static final String FLOW_DATA_ID_POSTFIX = "-flow-rules";
    /**
     * 同步到nacos生成的sentinel 参数规则的后缀
     */
    public static final String PARAM_FLOW_DATA_ID_POSTFIX = "-param-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";

    private NacosConfigUtil() {}
}

八

修改NacosConfig文件

将配置的nacos信息注入进去，且新增gateway流控配置和sentinel全局规则的配置

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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.FlowRuleEntity;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.fastjson.JSON;
import com.alibaba.nacos.api.config.ConfigFactory;
import com.alibaba.nacos.api.config.ConfigService;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Configuration
public class NacosConfig {
    @Autowired
    private NacosInfoConfig nacosInfoConfig;

    /**
     * sentinel本地流控 编码器
     * @return
     */
    @Bean
    public Converter<List<FlowRuleEntity>, String> flowRuleEntityEncoder() {
        return JSON::toJSONString;
    }

    /**
     * sentinel 针对gateway流控配置 编码器
     * @return
     */
    @Bean
    public Converter<List<GatewayFlowRuleEntity>, String> flowRuleGatewayEntityEncoder() {
        return JSON::toJSONString;
    }
    /**
     * sentinel 针对全局流控配置 编码器
     * @return
     */
    @Bean
    public Converter<List<ApiDefinitionEntity>, String> flowRuleNacosEntityEncoder() {
        return JSON::toJSONString;
    }
    /**
     * sentinel本地流控 解码器
     * @return
     */
    @Bean
    public Converter<String, List<FlowRuleEntity>> flowRuleEntityDecoder() {
        return s -> JSON.parseArray(s, FlowRuleEntity.class);
    }
    /**
     * sentinel 针对gateway流控配置 解码器
     * @return
     */
    @Bean
    public Converter<String, List<GatewayFlowRuleEntity>> flowRuleGatewayEntityDecoder() {
        return s -> JSON.parseArray(s, GatewayFlowRuleEntity.class);
    }
    /**
     * sentinel 针对全局流控配置 解码器
     * @return
     */
    @Bean
    public Converter<String, List<ApiDefinitionEntity>> flowRuleNacosEntityDecoder() {
        return s -> JSON.parseArray(s, ApiDefinitionEntity.class);
    }

    @Bean
    public ConfigService nacosConfigService() throws Exception {
        Properties properties = new Properties();
        //Nacos地址
        properties.put("serverAddr", nacosInfoConfig.getServerAddr());
        //Nacos用户名
        properties.put("username", nacosInfoConfig.getUsername());
        //Nacos密码
        properties.put("password", nacosInfoConfig.getPassword());
        properties.put("namespace", nacosInfoConfig.getNamespace());
        return ConfigFactory.createConfigService(properties);
    }
}

九

新建FlowRuleGatewayProvider和FlowRuleGatewayPublisher 分别提供gateway添加和查询的操作

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayFlowRuleEntity;
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;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Component("flowRuleGatewayProvider")
public class FlowRuleGatewayProvider implements DynamicRuleProvider<List<GatewayFlowRuleEntity>> {

    @Autowired
    private ConfigService configService;
    @Autowired
    @Qualifier("flowRuleGatewayEntityDecoder")
    private Converter<String, List<GatewayFlowRuleEntity>> converter;

    @Override
    public List<GatewayFlowRuleEntity> getRules(String appName) throws Exception {
        String rules = configService.getConfig(appName + NacosConfigUtil.FLOW_DATA_ID_POSTFIX,
            NacosConfigUtil.GROUP_ID, 3000);
        if (StringUtil.isEmpty(rules)) {
            return new ArrayList<>();
        }
        return converter.convert(rules);
    }
}

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayFlowRuleEntity;
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;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Component("flowRuleGatewayPublisher")
public class FlowRuleGatewayPublisher implements DynamicRulePublisher<List<GatewayFlowRuleEntity>> {

    @Autowired
    private ConfigService configService;
    @Autowired
    @Qualifier("flowRuleGatewayEntityEncoder")
    private Converter<List<GatewayFlowRuleEntity>, String> converter;

    @Override
    public void publish(String app, List<GatewayFlowRuleEntity> rules) throws Exception {
        AssertUtil.notEmpty(app, "app name cannot be empty");
        if (rules == null) {
            return;
        }
        configService.publishConfig(app + NacosConfigUtil.FLOW_DATA_ID_POSTFIX,
            NacosConfigUtil.GROUP_ID, converter.convert(rules), ConfigType.JSON.getType());
    }
}

新建FlowRuleApiProvider和FlowRuleApiPublisher 分别提供sentinel全局规则查询和编辑

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiDefinitionEntity;
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;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Component("flowRuleNacosProvider")
public class FlowRuleApiProvider implements DynamicRuleProvider<List<ApiDefinitionEntity>> {

    @Autowired
    private ConfigService configService;
    @Autowired
    @Qualifier("flowRuleNacosEntityDecoder")
    private Converter<String, List<ApiDefinitionEntity>> converter;

    @Override
    public List<ApiDefinitionEntity> getRules(String appName) throws Exception {
        String rules = configService.getConfig(appName + NacosConfigUtil.API_DATA_ID_POSTFIX,
            NacosConfigUtil.GROUP_ID, 3000);
        if (StringUtil.isEmpty(rules)) {
            return new ArrayList<>();
        }
        return converter.convert(rules);
    }
}

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiDefinitionEntity;
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;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@Component("flowRuleNacosPublisher")
public class FlowRuleApiPublisher implements DynamicRulePublisher<List<ApiDefinitionEntity>> {

    @Autowired
    private ConfigService configService;
    @Autowired
    @Qualifier("flowRuleNacosEntityEncoder")
    private Converter<List<ApiDefinitionEntity>, String> converter;

    @Override
    public void publish(String app, List<ApiDefinitionEntity> rules) throws Exception {
        AssertUtil.notEmpty(app, "app name cannot be empty");
        if (rules == null) {
            return;
        }
        configService.publishConfig(app + NacosConfigUtil.API_DATA_ID_POSTFIX,
            NacosConfigUtil.GROUP_ID, converter.convert(rules), ConfigType.JSON.getType());
    }
}

自此配置方面就结束了，接下来上controller代码

十

找到controller下的gateway目录两个controller

下边的增删改查方法都有修改，修改的地方比较多，这里我直接贴主要替换的代码和controller全部代码大家直接粘贴

GatewayApiController修改处：

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


package com.alibaba.csp.sentinel.dashboard.controller.gateway;

import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService;
import com.alibaba.csp.sentinel.dashboard.client.SentinelApiClient;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiDefinitionEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.ApiPredicateItemEntity;
import com.alibaba.csp.sentinel.dashboard.discovery.MachineInfo;
import com.alibaba.csp.sentinel.dashboard.domain.Result;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.AddApiReqVo;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.ApiPredicateItemVo;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.api.UpdateApiReqVo;
import com.alibaba.csp.sentinel.dashboard.repository.gateway.InMemApiDefinitionStore;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.util.StringUtil;
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.util.CollectionUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.*;

import static com.alibaba.csp.sentinel.adapter.gateway.common.SentinelGatewayConstants.*;

/**
 * Gateway api Controller for manage gateway api definitions.
 *
 * @author cdfive
 * @since 1.7.0
 */
@RestController
@RequestMapping(value = "/gateway/api")
public class GatewayApiController {

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

    @Autowired
    private InMemApiDefinitionStore repository;

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

    @GetMapping("/list.json")
    @AuthAction(AuthService.PrivilegeType.READ_RULE)
    public Result<List<ApiDefinitionEntity>> queryApis(String app, String ip, Integer port) {

        if (StringUtil.isEmpty(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        if (StringUtil.isEmpty(ip)) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        if (port == null) {
            return Result.ofFail(-1, "port can't be null");
        }

        try {
            List<ApiDefinitionEntity> apis = ruleProvider.getRules(app);
//            List<ApiDefinitionEntity> apis = sentinelApiClient.fetchApis(app, ip, port).get();
            repository.saveAll(apis);
            return Result.ofSuccess(apis);
        } catch (Throwable throwable) {
            logger.error("queryApis error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }
    }

    @PostMapping("/new.json")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<ApiDefinitionEntity> addApi(HttpServletRequest request, @RequestBody AddApiReqVo reqVo) {

        String app = reqVo.getApp();
        if (StringUtil.isBlank(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }

        ApiDefinitionEntity entity = new ApiDefinitionEntity();
        entity.setApp(app.trim());

        String ip = reqVo.getIp();
        if (StringUtil.isBlank(ip)) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        entity.setIp(ip.trim());

        Integer port = reqVo.getPort();
        if (port == null) {
            return Result.ofFail(-1, "port can't be null");
        }
        entity.setPort(port);

        // API名称
        String apiName = reqVo.getApiName();
        if (StringUtil.isBlank(apiName)) {
            return Result.ofFail(-1, "apiName can't be null or empty");
        }
        entity.setApiName(apiName.trim());

        // 匹配规则列表
        List<ApiPredicateItemVo> predicateItems = reqVo.getPredicateItems();
        if (CollectionUtils.isEmpty(predicateItems)) {
            return Result.ofFail(-1, "predicateItems can't empty");
        }

        List<ApiPredicateItemEntity> predicateItemEntities = new ArrayList<>();
        for (ApiPredicateItemVo predicateItem : predicateItems) {
            ApiPredicateItemEntity predicateItemEntity = new ApiPredicateItemEntity();

            // 匹配模式
            Integer matchStrategy = predicateItem.getMatchStrategy();
            if (!Arrays.asList(URL_MATCH_STRATEGY_EXACT, URL_MATCH_STRATEGY_PREFIX, URL_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
                return Result.ofFail(-1, "invalid matchStrategy: " + matchStrategy);
            }
            predicateItemEntity.setMatchStrategy(matchStrategy);

            // 匹配串
            String pattern = predicateItem.getPattern();
            if (StringUtil.isBlank(pattern)) {
                return Result.ofFail(-1, "pattern can't be null or empty");
            }
            predicateItemEntity.setPattern(pattern);

            predicateItemEntities.add(predicateItemEntity);
        }
        entity.setPredicateItems(new LinkedHashSet<>(predicateItemEntities));

        // 检查API名称不能重复
        List<ApiDefinitionEntity> allApis = repository.findAllByMachine(MachineInfo.of(app.trim(), ip.trim(), port));
        if (allApis.stream().map(o -> o.getApiName()).anyMatch(o -> o.equals(apiName.trim()))) {
            return Result.ofFail(-1, "apiName exists: " + apiName);
        }

        Date date = new Date();
        entity.setGmtCreate(date);
        entity.setGmtModified(date);

        try {
            entity = repository.save(entity);
            publishApis(entity.getApp());
        } catch (Throwable throwable) {
            logger.error("add gateway api error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishApis(app, ip, port)) {
//            logger.warn("publish gateway apis fail after add");
//        }

        return Result.ofSuccess(entity);
    }

    @PostMapping("/save.json")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<ApiDefinitionEntity> updateApi(@RequestBody UpdateApiReqVo reqVo) {
        String app = reqVo.getApp();
        if (StringUtil.isBlank(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }

        Long id = reqVo.getId();
        if (id == null) {
            return Result.ofFail(-1, "id can't be null");
        }

        ApiDefinitionEntity entity = repository.findById(id);
        if (entity == null) {
            return Result.ofFail(-1, "api does not exist, id=" + id);
        }

        // 匹配规则列表
        List<ApiPredicateItemVo> predicateItems = reqVo.getPredicateItems();
        if (CollectionUtils.isEmpty(predicateItems)) {
            return Result.ofFail(-1, "predicateItems can't empty");
        }

        List<ApiPredicateItemEntity> predicateItemEntities = new ArrayList<>();
        for (ApiPredicateItemVo predicateItem : predicateItems) {
            ApiPredicateItemEntity predicateItemEntity = new ApiPredicateItemEntity();

            // 匹配模式
            int matchStrategy = predicateItem.getMatchStrategy();
            if (!Arrays.asList(URL_MATCH_STRATEGY_EXACT, URL_MATCH_STRATEGY_PREFIX, URL_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
                return Result.ofFail(-1, "Invalid matchStrategy: " + matchStrategy);
            }
            predicateItemEntity.setMatchStrategy(matchStrategy);

            // 匹配串
            String pattern = predicateItem.getPattern();
            if (StringUtil.isBlank(pattern)) {
                return Result.ofFail(-1, "pattern can't be null or empty");
            }
            predicateItemEntity.setPattern(pattern);

            predicateItemEntities.add(predicateItemEntity);
        }
        entity.setPredicateItems(new LinkedHashSet<>(predicateItemEntities));

        Date date = new Date();
        entity.setGmtModified(date);

        try {
            entity = repository.save(entity);
            publishApis(entity.getApp());
        } catch (Throwable throwable) {
            logger.error("update gateway api error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishApis(app, entity.getIp(), entity.getPort())) {
//            logger.warn("publish gateway apis fail after update");
//        }

        return Result.ofSuccess(entity);
    }

    @PostMapping("/delete.json")
    @AuthAction(AuthService.PrivilegeType.DELETE_RULE)

    public Result<Long> deleteApi(Long id) {
        if (id == null) {
            return Result.ofFail(-1, "id can't be null");
        }

        ApiDefinitionEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofSuccess(null);
        }

        try {
            repository.delete(id);
            publishApis(oldEntity.getApp());
        } catch (Throwable throwable) {
            logger.error("delete gateway api error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishApis(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort())) {
//            logger.warn("publish gateway apis fail after delete");
//        }

        return Result.ofSuccess(id);
    }

//    private boolean publishApis(String app, String ip, Integer port) {
//        List<ApiDefinitionEntity> apis = repository.findAllByMachine(MachineInfo.of(app, ip, port));
//        return sentinelApiClient.modifyApis(app, ip, port, apis);
//    }

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

GatewayFlowRuleController修改为：

    @Autowired
    @Qualifier("flowRuleGatewayProvider")
    private DynamicRuleProvider<List<GatewayFlowRuleEntity>> ruleProvider;
    @Autowired
    @Qualifier("flowRuleGatewayPublisher")
    private DynamicRulePublisher<List<GatewayFlowRuleEntity>> rulePublisher;


package com.alibaba.csp.sentinel.dashboard.controller.gateway;


import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
import com.alibaba.csp.sentinel.dashboard.auth.AuthService;
import com.alibaba.csp.sentinel.dashboard.client.SentinelApiClient;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayFlowRuleEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayParamFlowItemEntity;
import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
import com.alibaba.csp.sentinel.dashboard.discovery.MachineInfo;
import com.alibaba.csp.sentinel.dashboard.domain.Result;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.rule.AddFlowRuleReqVo;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.rule.GatewayParamFlowItemVo;
import com.alibaba.csp.sentinel.dashboard.domain.vo.gateway.rule.UpdateFlowRuleReqVo;
import com.alibaba.csp.sentinel.dashboard.repository.gateway.InMemGatewayFlowRuleStore;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
import com.alibaba.csp.sentinel.util.StringUtil;
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.*;

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

import static com.alibaba.csp.sentinel.slots.block.RuleConstant.*;
import static com.alibaba.csp.sentinel.adapter.gateway.common.SentinelGatewayConstants.*;
import static com.alibaba.csp.sentinel.dashboard.datasource.entity.gateway.GatewayFlowRuleEntity.*;

/**
 * Gateway flow rule Controller for manage gateway flow rules.
 *
 * @author cdfive
 * @since 1.7.0
 */
@RestController
@RequestMapping(value = "/gateway/flow")
public class GatewayFlowRuleController {

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

    @Autowired
    private InMemGatewayFlowRuleStore repository;

    @Autowired
    private SentinelApiClient sentinelApiClient;
    @Autowired
    @Qualifier("flowRuleGatewayProvider")
    private DynamicRuleProvider<List<GatewayFlowRuleEntity>> ruleProvider;
    @Autowired
    @Qualifier("flowRuleGatewayPublisher")
    private DynamicRulePublisher<List<GatewayFlowRuleEntity>> rulePublisher;

    @GetMapping("/list.json")
    @AuthAction(AuthService.PrivilegeType.READ_RULE)
    public Result<List<GatewayFlowRuleEntity>> queryFlowRules(String app, String ip, Integer port) {

        if (StringUtil.isEmpty(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }
        if (StringUtil.isEmpty(ip)) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        if (port == null) {
            return Result.ofFail(-1, "port can't be null");
        }

//        try {
//            List<GatewayFlowRuleEntity> rules = sentinelApiClient.fetchGatewayFlowRules(app, ip, port).get();
//            repository.saveAll(rules);
//            return Result.ofSuccess(rules);
//        } catch (Throwable throwable) {
//            logger.error("query gateway flow rules error:", throwable);
//            return Result.ofThrowable(-1, throwable);
//        }
        try {
            List<GatewayFlowRuleEntity> rules = ruleProvider.getRules(app);
            rules = repository.saveAll(rules);
            return Result.ofSuccess(rules);
        } catch (Throwable throwable) {
            logger.error("Error when querying flow rules", throwable);
            return Result.ofThrowable(-1, throwable);
        }
    }

    @PostMapping("/new.json")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<GatewayFlowRuleEntity> addFlowRule(@RequestBody AddFlowRuleReqVo reqVo) {

        String app = reqVo.getApp();
        if (StringUtil.isBlank(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }

        GatewayFlowRuleEntity entity = new GatewayFlowRuleEntity();
        entity.setApp(app.trim());

        String ip = reqVo.getIp();
        if (StringUtil.isBlank(ip)) {
            return Result.ofFail(-1, "ip can't be null or empty");
        }
        entity.setIp(ip.trim());

        Integer port = reqVo.getPort();
        if (port == null) {
            return Result.ofFail(-1, "port can't be null");
        }
        entity.setPort(port);

        // API类型, Route ID或API分组
        Integer resourceMode = reqVo.getResourceMode();
        if (resourceMode == null) {
            return Result.ofFail(-1, "resourceMode can't be null");
        }
        if (!Arrays.asList(RESOURCE_MODE_ROUTE_ID, RESOURCE_MODE_CUSTOM_API_NAME).contains(resourceMode)) {
            return Result.ofFail(-1, "invalid resourceMode: " + resourceMode);
        }
        entity.setResourceMode(resourceMode);

        // API名称
        String resource = reqVo.getResource();
        if (StringUtil.isBlank(resource)) {
            return Result.ofFail(-1, "resource can't be null or empty");
        }
        entity.setResource(resource.trim());

        // 针对请求属性
        GatewayParamFlowItemVo paramItem = reqVo.getParamItem();
        if (paramItem != null) {
            GatewayParamFlowItemEntity itemEntity = new GatewayParamFlowItemEntity();
            entity.setParamItem(itemEntity);

            // 参数属性 0-ClientIP 1-Remote Host 2-Header 3-URL参数 4-Cookie
            Integer parseStrategy = paramItem.getParseStrategy();
            if (!Arrays.asList(PARAM_PARSE_STRATEGY_CLIENT_IP, PARAM_PARSE_STRATEGY_HOST, PARAM_PARSE_STRATEGY_HEADER
                    , PARAM_PARSE_STRATEGY_URL_PARAM, PARAM_PARSE_STRATEGY_COOKIE).contains(parseStrategy)) {
                return Result.ofFail(-1, "invalid parseStrategy: " + parseStrategy);
            }
            itemEntity.setParseStrategy(paramItem.getParseStrategy());

            // 当参数属性为2-Header 3-URL参数 4-Cookie时，参数名称必填
            if (Arrays.asList(PARAM_PARSE_STRATEGY_HEADER, PARAM_PARSE_STRATEGY_URL_PARAM, PARAM_PARSE_STRATEGY_COOKIE).contains(parseStrategy)) {
                // 参数名称
                String fieldName = paramItem.getFieldName();
                if (StringUtil.isBlank(fieldName)) {
                    return Result.ofFail(-1, "fieldName can't be null or empty");
                }
                itemEntity.setFieldName(paramItem.getFieldName());
            }

            String pattern = paramItem.getPattern();
            // 如果匹配串不为空，验证匹配模式
            if (StringUtil.isNotEmpty(pattern)) {
                itemEntity.setPattern(pattern);
                Integer matchStrategy = paramItem.getMatchStrategy();
                if (!Arrays.asList(PARAM_MATCH_STRATEGY_EXACT, PARAM_MATCH_STRATEGY_CONTAINS, PARAM_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
                    return Result.ofFail(-1, "invalid matchStrategy: " + matchStrategy);
                }
                itemEntity.setMatchStrategy(matchStrategy);
            }
        }

        // 阈值类型 0-线程数 1-QPS
        Integer grade = reqVo.getGrade();
        if (grade == null) {
            return Result.ofFail(-1, "grade can't be null");
        }
        if (!Arrays.asList(FLOW_GRADE_THREAD, FLOW_GRADE_QPS).contains(grade)) {
            return Result.ofFail(-1, "invalid grade: " + grade);
        }
        entity.setGrade(grade);

        // QPS阈值
        Double count = reqVo.getCount();
        if (count == null) {
            return Result.ofFail(-1, "count can't be null");
        }
        if (count < 0) {
            return Result.ofFail(-1, "count should be at lease zero");
        }
        entity.setCount(count);

        // 间隔
        Long interval = reqVo.getInterval();
        if (interval == null) {
            return Result.ofFail(-1, "interval can't be null");
        }
        if (interval <= 0) {
            return Result.ofFail(-1, "interval should be greater than zero");
        }
        entity.setInterval(interval);

        // 间隔单位
        Integer intervalUnit = reqVo.getIntervalUnit();
        if (intervalUnit == null) {
            return Result.ofFail(-1, "intervalUnit can't be null");
        }
        if (!Arrays.asList(INTERVAL_UNIT_SECOND, INTERVAL_UNIT_MINUTE, INTERVAL_UNIT_HOUR, INTERVAL_UNIT_DAY).contains(intervalUnit)) {
            return Result.ofFail(-1, "Invalid intervalUnit: " + intervalUnit);
        }
        entity.setIntervalUnit(intervalUnit);

        // 流控方式 0-快速失败 2-匀速排队
        Integer controlBehavior = reqVo.getControlBehavior();
        if (controlBehavior == null) {
            return Result.ofFail(-1, "controlBehavior can't be null");
        }
        if (!Arrays.asList(CONTROL_BEHAVIOR_DEFAULT, CONTROL_BEHAVIOR_RATE_LIMITER).contains(controlBehavior)) {
            return Result.ofFail(-1, "invalid controlBehavior: " + controlBehavior);
        }
        entity.setControlBehavior(controlBehavior);

        if (CONTROL_BEHAVIOR_DEFAULT == controlBehavior) {
            // 0-快速失败, 则Burst size必填
            Integer burst = reqVo.getBurst();
            if (burst == null) {
                return Result.ofFail(-1, "burst can't be null");
            }
            if (burst < 0) {
                return Result.ofFail(-1, "invalid burst: " + burst);
            }
            entity.setBurst(burst);
        } else if (CONTROL_BEHAVIOR_RATE_LIMITER == controlBehavior) {
            // 1-匀速排队, 则超时时间必填
            Integer maxQueueingTimeoutMs = reqVo.getMaxQueueingTimeoutMs();
            if (maxQueueingTimeoutMs == null) {
                return Result.ofFail(-1, "maxQueueingTimeoutMs can't be null");
            }
            if (maxQueueingTimeoutMs < 0) {
                return Result.ofFail(-1, "invalid maxQueueingTimeoutMs: " + maxQueueingTimeoutMs);
            }
            entity.setMaxQueueingTimeoutMs(maxQueueingTimeoutMs);
        }

        Date date = new Date();
        entity.setGmtCreate(date);
        entity.setGmtModified(date);

        try {
            entity = repository.save(entity);
            publishRules(entity.getApp());
        } catch (Throwable throwable) {
            logger.error("add gateway flow rule error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishRules(app, ip, port)) {
//            logger.warn("publish gateway flow rules fail after add");
//        }

        return Result.ofSuccess(entity);
    }

    @PostMapping("/save.json")
    @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
    public Result<GatewayFlowRuleEntity> updateFlowRule(@RequestBody UpdateFlowRuleReqVo reqVo) {

        String app = reqVo.getApp();
        if (StringUtil.isBlank(app)) {
            return Result.ofFail(-1, "app can't be null or empty");
        }

        Long id = reqVo.getId();
        if (id == null) {
            return Result.ofFail(-1, "id can't be null");
        }

        GatewayFlowRuleEntity entity = repository.findById(id);
        if (entity == null) {
            return Result.ofFail(-1, "gateway flow rule does not exist, id=" + id);
        }

        // 针对请求属性
        GatewayParamFlowItemVo paramItem = reqVo.getParamItem();
        if (paramItem != null) {
            GatewayParamFlowItemEntity itemEntity = new GatewayParamFlowItemEntity();
            entity.setParamItem(itemEntity);

            // 参数属性 0-ClientIP 1-Remote Host 2-Header 3-URL参数 4-Cookie
            Integer parseStrategy = paramItem.getParseStrategy();
            if (!Arrays.asList(PARAM_PARSE_STRATEGY_CLIENT_IP, PARAM_PARSE_STRATEGY_HOST, PARAM_PARSE_STRATEGY_HEADER
                    , PARAM_PARSE_STRATEGY_URL_PARAM, PARAM_PARSE_STRATEGY_COOKIE).contains(parseStrategy)) {
                return Result.ofFail(-1, "invalid parseStrategy: " + parseStrategy);
            }
            itemEntity.setParseStrategy(paramItem.getParseStrategy());

            // 当参数属性为2-Header 3-URL参数 4-Cookie时，参数名称必填
            if (Arrays.asList(PARAM_PARSE_STRATEGY_HEADER, PARAM_PARSE_STRATEGY_URL_PARAM, PARAM_PARSE_STRATEGY_COOKIE).contains(parseStrategy)) {
                // 参数名称
                String fieldName = paramItem.getFieldName();
                if (StringUtil.isBlank(fieldName)) {
                    return Result.ofFail(-1, "fieldName can't be null or empty");
                }
                itemEntity.setFieldName(paramItem.getFieldName());
            }

            String pattern = paramItem.getPattern();
            // 如果匹配串不为空，验证匹配模式
            if (StringUtil.isNotEmpty(pattern)) {
                itemEntity.setPattern(pattern);
                Integer matchStrategy = paramItem.getMatchStrategy();
                if (!Arrays.asList(PARAM_MATCH_STRATEGY_EXACT, PARAM_MATCH_STRATEGY_CONTAINS, PARAM_MATCH_STRATEGY_REGEX).contains(matchStrategy)) {
                    return Result.ofFail(-1, "invalid matchStrategy: " + matchStrategy);
                }
                itemEntity.setMatchStrategy(matchStrategy);
            }
        } else {
            entity.setParamItem(null);
        }

        // 阈值类型 0-线程数 1-QPS
        Integer grade = reqVo.getGrade();
        if (grade == null) {
            return Result.ofFail(-1, "grade can't be null");
        }
        if (!Arrays.asList(FLOW_GRADE_THREAD, FLOW_GRADE_QPS).contains(grade)) {
            return Result.ofFail(-1, "invalid grade: " + grade);
        }
        entity.setGrade(grade);

        // QPS阈值
        Double count = reqVo.getCount();
        if (count == null) {
            return Result.ofFail(-1, "count can't be null");
        }
        if (count < 0) {
            return Result.ofFail(-1, "count should be at lease zero");
        }
        entity.setCount(count);

        // 间隔
        Long interval = reqVo.getInterval();
        if (interval == null) {
            return Result.ofFail(-1, "interval can't be null");
        }
        if (interval <= 0) {
            return Result.ofFail(-1, "interval should be greater than zero");
        }
        entity.setInterval(interval);

        // 间隔单位
        Integer intervalUnit = reqVo.getIntervalUnit();
        if (intervalUnit == null) {
            return Result.ofFail(-1, "intervalUnit can't be null");
        }
        if (!Arrays.asList(INTERVAL_UNIT_SECOND, INTERVAL_UNIT_MINUTE, INTERVAL_UNIT_HOUR, INTERVAL_UNIT_DAY).contains(intervalUnit)) {
            return Result.ofFail(-1, "Invalid intervalUnit: " + intervalUnit);
        }
        entity.setIntervalUnit(intervalUnit);

        // 流控方式 0-快速失败 2-匀速排队
        Integer controlBehavior = reqVo.getControlBehavior();
        if (controlBehavior == null) {
            return Result.ofFail(-1, "controlBehavior can't be null");
        }
        if (!Arrays.asList(CONTROL_BEHAVIOR_DEFAULT, CONTROL_BEHAVIOR_RATE_LIMITER).contains(controlBehavior)) {
            return Result.ofFail(-1, "invalid controlBehavior: " + controlBehavior);
        }
        entity.setControlBehavior(controlBehavior);

        if (CONTROL_BEHAVIOR_DEFAULT == controlBehavior) {
            // 0-快速失败, 则Burst size必填
            Integer burst = reqVo.getBurst();
            if (burst == null) {
                return Result.ofFail(-1, "burst can't be null");
            }
            if (burst < 0) {
                return Result.ofFail(-1, "invalid burst: " + burst);
            }
            entity.setBurst(burst);
        } else if (CONTROL_BEHAVIOR_RATE_LIMITER == controlBehavior) {
            // 2-匀速排队, 则超时时间必填
            Integer maxQueueingTimeoutMs = reqVo.getMaxQueueingTimeoutMs();
            if (maxQueueingTimeoutMs == null) {
                return Result.ofFail(-1, "maxQueueingTimeoutMs can't be null");
            }
            if (maxQueueingTimeoutMs < 0) {
                return Result.ofFail(-1, "invalid maxQueueingTimeoutMs: " + maxQueueingTimeoutMs);
            }
            entity.setMaxQueueingTimeoutMs(maxQueueingTimeoutMs);
        }

        Date date = new Date();
        entity.setGmtModified(date);

        try {
            entity = repository.save(entity);

            publishRules(entity.getApp());
        } catch (Throwable throwable) {
            logger.error("update gateway flow rule error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishRules(app, entity.getIp(), entity.getPort())) {
//            logger.warn("publish gateway flow rules fail after update");
//        }

        return Result.ofSuccess(entity);
    }


    @PostMapping("/delete.json")
    @AuthAction(AuthService.PrivilegeType.DELETE_RULE)
    public Result<Long> deleteFlowRule(Long id) {

        if (id == null) {
            return Result.ofFail(-1, "id can't be null");
        }

        GatewayFlowRuleEntity oldEntity = repository.findById(id);
        if (oldEntity == null) {
            return Result.ofSuccess(null);
        }

        try {
            repository.delete(id);
            publishRules(oldEntity.getApp());
        } catch (Throwable throwable) {
            logger.error("delete gateway flow rule error:", throwable);
            return Result.ofThrowable(-1, throwable);
        }

//        if (!publishRules(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort())) {
//            logger.warn("publish gateway flow rules fail after delete");
//        }

        return Result.ofSuccess(id);
    }

//    private boolean publishRules(String app, String ip, Integer port) {
//        List<GatewayFlowRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
//        return sentinelApiClient.modifyGatewayFlowRules(app, ip, port, rules);
//    }
private void publishRules(/*@NonNull*/ String app) throws Exception {
    List<GatewayFlowRuleEntity> rules = repository.findAllByApp(app);
    rulePublisher.publish(app, rules);
}
}