如何使用Sentinel Dashboard動(dòng)態(tài)推把數(shù)據(jù)同步到Nacos

這篇文章主要講解了“如何使用Sentinel Dashboard動(dòng)態(tài)推把數(shù)據(jù)同步到Nacos”，文中的講解內(nèi)容簡(jiǎn)單清晰，易于學(xué)習(xí)與理解，下面請(qǐng)大家跟著小編的思路慢慢深入，一起來(lái)研究和學(xué)習(xí)“如何使用Sentinel Dashboard動(dòng)態(tài)推把數(shù)據(jù)同步到Nacos”吧！

準(zhǔn)備工作：

下載Sentinel Dashboard的release版本。地址：https://github.com/alibaba/Sentinel/releases

一 ：修改pom.xml中的sentinel-datasource-nacos的依賴(lài)，將<scope>test</scope>注釋掉，這樣才能在主程序中使用。

<dependency>
    <groupId>com.alibaba.csp</groupId>
    <artifactId>sentinel-datasource-nacos</artifactId>
    <!--<scope>test</scope>-->
</dependency>

 二：找到resources/app/scripts/directives/sidebar/sidebar.html中的這段代碼：

<li ui-sref-active="active">
    <a ui-sref="dashboard.flowV1({app: entry.app})">
        <i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控規(guī)則
    </a>
</li>

修改為：

<li ui-sref-active="active">
    <a ui-sref="dashboard.flow({app: entry.app})">
        <i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控規(guī)則
    </a>
</li>

這樣修改之后就會(huì)跳轉(zhuǎn)到FlowControllerV2的接口。

三：再項(xiàng)目com.alibaba.csp.sentinel.dashboard中新建一個(gè)nacos包來(lái)實(shí)現(xiàn)擴(kuò)展功能。

@Component
@ConfigurationProperties(prefix = "nacos.server")
public class NacosConfigProperties {

    private String ip;

    private String port;

    private String namespace;

    private String groupId;

    public String getIp() {
        return ip;
    }
    public void setIp(String ip) {
        this.ip = ip;
    }
    public String getPort() {
        return port;
    }
    public void setPort(String port) {
        this.port = port;
    }
    public String getNamespace() {
        return namespace;
    }
    public void setNamespace(String namespace) {
        this.namespace = namespace;
    }
    public String getGroupId() {
        return groupId;
    }
    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }
    public String getServerAddr() {
        return this.getIp()+":"+this.getPort();
    }
    @Override
    public String toString() {
        return "NacosConfigProperties [ip=" + ip + ", port=" + port + ", namespace="
                + namespace + ", groupId=" + groupId + "]";
    }

}

public final class NacosConfigConstant {
    public static final String FLOW_DATA_ID_POSTFIX = "-sentinel-flow";
    public static final String GROUP_ID = "DEFAULT_GROUP";
}

@Configuration
public class NacosConfig {

    @Autowired
    private NacosConfigProperties nacosConfigProperties;

    /**
     * 非常關(guān)鍵 這里將FlowRuleEntity轉(zhuǎn)換成FlowRule才會(huì)對(duì)客戶(hù)端生效
     * @return FlowRule
     */
    @Bean
    public Converter<List<FlowRuleEntity>, String> flowRuleEntityEncoder() {
        return rules -> JSON.toJSONString(rules.stream().map(FlowRuleEntity::toRule).collect(Collectors.toList()), true);
    }

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

    @Bean
    public ConfigService nacosConfigService() throws Exception {
        Properties properties = new Properties();
        properties.put(PropertyKeyConst.SERVER_ADDR, nacosConfigProperties.getServerAddr());
        properties.put(PropertyKeyConst.NAMESPACE, nacosConfigProperties.getNamespace());
        return ConfigFactory.createConfigService(properties);
    }
}

四：編寫(xiě)動(dòng)態(tài)推拉模式的擴(kuò)展代碼

@Component("flowRuleNacosProvider")
public class FlowRuleNacosProvider implements DynamicRuleProvider<List<FlowRuleEntity>> {

    private static Logger logger = LoggerFactory.getLogger(FlowRuleNacosProvider.class);

    @Autowired
    private NacosConfigProperties nacosConfigProperties;

    @Autowired
    private ConfigService configService;

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

    @Override
    public List<FlowRuleEntity> getRules(String appName) throws Exception {
        String rules = configService.getConfig(appName + NacosConfigConstant.FLOW_DATA_ID_POSTFIX, nacosConfigProperties.getGroupId(), 3000);
        logger.info("從Nacos中拉取到限流規(guī)則信息:{}",rules);
        if (StringUtil.isEmpty(rules)) {
            return new ArrayList<>();
        }
        return converter.convert(rules);
    }
}

@Component("flowRuleNacosPublisher")
public class FlowRuleNacosPublisher implements DynamicRulePublisher<List<FlowRuleEntity>> {

    @Autowired
    private NacosConfigProperties nacosConfigProperties;

    @Autowired
    private ConfigService configService;
    @Autowired
    private Converter<List<FlowRuleEntity>, String> converter;

    @Override
    public void publish(String app, List<FlowRuleEntity> rules) throws Exception {
        AssertUtil.notEmpty(app, "app name cannot be empty");
        if (rules == null) {
            return;
        }
        configService.publishConfig(app + NacosConfigConstant.FLOW_DATA_ID_POSTFIX, nacosConfigProperties.getGroupId(), converter.convert(rules));
    }

}

五：然后將FlowControllerV2中的默認(rèn)DynamicRuleProvider和DynamicRulePublisher修改為：

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

private void publishRules(/*@NonNull*/ String app) throws Exception {
    List<FlowRuleEntity> rules = repository.findAllByApp(app);
    rulePublisher.publish(app, rules);
    logger.info("添加限流規(guī)則成功{}", JSON.toJSONString(rules.stream().map(FlowRuleEntity::toRule).collect(Collectors.toList()), true));
}

六：application.properties配置文件

#nacos
nacos.server.ip=localhost
nacos.server.port=8848
nacos.server.namespace=
nacos.server.group-id=DEFAULT_GROUP

感謝各位的閱讀，以上就是“如何使用Sentinel Dashboard動(dòng)態(tài)推把數(shù)據(jù)同步到Nacos”的內(nèi)容了，經(jīng)過(guò)本文的學(xué)習(xí)后，相信大家對(duì)如何使用Sentinel Dashboard動(dòng)態(tài)推把數(shù)據(jù)同步到Nacos這一問(wèn)題有了更深刻的體會(huì)，具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是億速云，小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章，歡迎關(guān)注！