这篇文章主要讲解了“如何使用Sentinel Dashboard动态推把数据同步到Nacos”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“如何使用Sentinel Dashboard动态推把数据同步到Nacos”吧!
下载Sentinel Dashboard的release版本。地址:https://github.com/alibaba/Sentinel/releases
一 :修改pom.xml
中的sentinel-datasource-nacos的依赖,将<scope>test</scope>
注释掉,这样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
中的这段代码:
<li ui-sref-active="active"> <a ui-sref="dashboard.flowV1({app: entry.app})"> <i class="glyphicon glyphicon-filter"></i> 流控规则 </a> </li> |
修改为:
<li ui-sref-active="active"> <a ui-sref="dashboard.flow({app: entry.app})"> <i class="glyphicon glyphicon-filter"></i> 流控规则 </a> </li> |
这样修改之后就会跳转到FlowControllerV2的接口。
三:再项目com.alibaba.csp.sentinel.dashboard中新建一个nacos包来实现扩展功能。
@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; /** * 非常关键 这里将FlowRuleEntity转换成FlowRule才会对客户端生效 * @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:编写动态推拉模式的扩展代码
@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("从Nacos中拉取到限流规则信息:{}",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:然后将FlowControllerV2中的默认DynamicRuleProvider
和DynamicRulePublisher
修改为:
@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("添加限流规则成功{}", 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
感谢各位的阅读,以上就是“如何使用Sentinel Dashboard动态推把数据同步到Nacos”的内容了,经过本文的学习后,相信大家对如何使用Sentinel Dashboard动态推把数据同步到Nacos这一问题有了更深刻的体会,具体使用情况还需要大家实践验证。这里是亿速云,小编将为大家推送更多相关知识点的文章,欢迎关注!
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