package com.alibaba.csp.sentinel.dashboard.controller;
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import java.util.Date;
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import java.util.List;
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import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
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import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
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import com.alibaba.csp.sentinel.dashboard.controller.base.BaseRuleController;
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import com.alibaba.csp.sentinel.dashboard.repository.rule.RuleRepository;
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import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
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import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
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import com.alibaba.csp.sentinel.util.StringUtil;
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import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.SystemRuleEntity;
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import com.alibaba.csp.sentinel.dashboard.domain.Result;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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/**
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* 系统规则控制器
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*
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* @author zyf
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* @date 2022-04-13
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*/
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@RestController
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@RequestMapping("/system")
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public class SystemController extends BaseRuleController {
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private final Logger logger = LoggerFactory.getLogger(SystemController.class);
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@Autowired
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private RuleRepository<SystemRuleEntity, Long> repository;
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@Autowired
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@Qualifier("systemRuleNacosProvider")
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private DynamicRuleProvider<List<SystemRuleEntity>> ruleProvider;
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@Autowired
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@Qualifier("systemRuleNacosPublisher")
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private DynamicRulePublisher<List<SystemRuleEntity>> rulePublisher;
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private <R> Result<R> checkBasicParams(String app, String ip, Integer port) {
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if (StringUtil.isEmpty(app)) {
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return Result.ofFail(-1, "app can't be null or empty");
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}
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if (StringUtil.isEmpty(ip)) {
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return Result.ofFail(-1, "ip can't be null or empty");
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}
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if (port == null) {
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return Result.ofFail(-1, "port can't be null");
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}
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if (port <= 0 || port > 65535) {
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return Result.ofFail(-1, "port should be in (0, 65535)");
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}
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return null;
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}
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@GetMapping("/rules.json")
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@AuthAction(PrivilegeType.READ_RULE)
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public Result<List<SystemRuleEntity>> apiQueryMachineRules(String app, String ip,
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Integer port) {
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Result<List<SystemRuleEntity>> checkResult = checkBasicParams(app, ip, port);
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if (checkResult != null) {
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return checkResult;
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}
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try {
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List<SystemRuleEntity> rules = ruleProvider.getRules(app);
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rules = repository.saveAll(rules);
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return Result.ofSuccess(rules);
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} catch (Throwable throwable) {
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logger.error("Query machine system rules error", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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}
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private int countNotNullAndNotNegative(Number... values) {
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int notNullCount = 0;
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for (int i = 0; i < values.length; i++) {
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if (values[i] != null && values[i].doubleValue() >= 0) {
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notNullCount++;
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}
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}
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return notNullCount;
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}
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@RequestMapping("/new.json")
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@AuthAction(PrivilegeType.WRITE_RULE)
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public Result<SystemRuleEntity> apiAdd(String app, String ip, Integer port,
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Double highestSystemLoad, Double highestCpuUsage, Long avgRt,
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Long maxThread, Double qps) {
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Result<SystemRuleEntity> checkResult = checkBasicParams(app, ip, port);
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if (checkResult != null) {
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return checkResult;
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}
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int notNullCount = countNotNullAndNotNegative(highestSystemLoad, avgRt, maxThread, qps, highestCpuUsage);
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if (notNullCount != 1) {
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return Result.ofFail(-1, "only one of [highestSystemLoad, avgRt, maxThread, qps,highestCpuUsage] "
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+ "value must be set > 0, but " + notNullCount + " values get");
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}
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if (null != highestCpuUsage && highestCpuUsage > 1) {
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return Result.ofFail(-1, "highestCpuUsage must between [0.0, 1.0]");
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}
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SystemRuleEntity entity = new SystemRuleEntity();
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entity.setApp(app.trim());
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entity.setIp(ip.trim());
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entity.setPort(port);
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// -1 is a fake value
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if (null != highestSystemLoad) {
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entity.setHighestSystemLoad(highestSystemLoad);
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} else {
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entity.setHighestSystemLoad(-1D);
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}
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if (null != highestCpuUsage) {
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entity.setHighestCpuUsage(highestCpuUsage);
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} else {
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entity.setHighestCpuUsage(-1D);
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}
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if (avgRt != null) {
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entity.setAvgRt(avgRt);
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} else {
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entity.setAvgRt(-1L);
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}
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if (maxThread != null) {
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entity.setMaxThread(maxThread);
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} else {
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entity.setMaxThread(-1L);
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}
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if (qps != null) {
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entity.setQps(qps);
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} else {
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entity.setQps(-1D);
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}
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Date date = new Date();
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entity.setGmtCreate(date);
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entity.setGmtModified(date);
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try {
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entity = repository.save(entity);
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publishRules(app);
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} catch (Throwable throwable) {
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logger.error("Add SystemRule error", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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return Result.ofSuccess(entity);
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}
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@GetMapping("/save.json")
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@AuthAction(PrivilegeType.WRITE_RULE)
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public Result<SystemRuleEntity> apiUpdateIfNotNull(Long id, String app, Double highestSystemLoad,
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Double highestCpuUsage, Long avgRt, Long maxThread, Double qps) {
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if (id == null) {
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return Result.ofFail(-1, "id can't be null");
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}
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SystemRuleEntity entity = repository.findById(id);
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if (entity == null) {
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return Result.ofFail(-1, "id " + id + " dose not exist");
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}
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if (StringUtil.isNotBlank(app)) {
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entity.setApp(app.trim());
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}
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if (highestSystemLoad != null) {
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if (highestSystemLoad < 0) {
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return Result.ofFail(-1, "highestSystemLoad must >= 0");
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}
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entity.setHighestSystemLoad(highestSystemLoad);
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}
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if (highestCpuUsage != null) {
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if (highestCpuUsage < 0) {
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return Result.ofFail(-1, "highestCpuUsage must >= 0");
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}
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if (highestCpuUsage > 1) {
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return Result.ofFail(-1, "highestCpuUsage must <= 1");
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}
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entity.setHighestCpuUsage(highestCpuUsage);
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}
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if (avgRt != null) {
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if (avgRt < 0) {
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return Result.ofFail(-1, "avgRt must >= 0");
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}
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entity.setAvgRt(avgRt);
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}
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if (maxThread != null) {
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if (maxThread < 0) {
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return Result.ofFail(-1, "maxThread must >= 0");
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}
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entity.setMaxThread(maxThread);
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}
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if (qps != null) {
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if (qps < 0) {
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return Result.ofFail(-1, "qps must >= 0");
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}
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entity.setQps(qps);
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}
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Date date = new Date();
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entity.setGmtModified(date);
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try {
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entity = repository.save(entity);
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publishRules(entity.getApp());
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} catch (Throwable throwable) {
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logger.error("save error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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return Result.ofSuccess(entity);
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}
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@RequestMapping("/delete.json")
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@AuthAction(PrivilegeType.DELETE_RULE)
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public Result<?> delete(Long id) {
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if (id == null) {
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return Result.ofFail(-1, "id can't be null");
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}
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SystemRuleEntity oldEntity = repository.findById(id);
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if (oldEntity == null) {
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return Result.ofSuccess(null);
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}
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try {
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repository.delete(id);
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publishRules(oldEntity.getApp());
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} catch (Throwable throwable) {
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logger.error("delete error:", throwable);
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return Result.ofThrowable(-1, throwable);
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}
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return Result.ofSuccess(id);
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}
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private void publishRules(String app) throws Exception {
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List<SystemRuleEntity> rules = repository.findAllByApp(app);
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rulePublisher.publish(app, rules);
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//延迟加载
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delayTime();
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}
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}
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