Examples with DegradeRule com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule used on opensource projects

Example 31 with DegradeRule

use of com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule in project Spring-Cloud by zhao-staff-officer.

the class SentinelDemo1 method initRule.

public static void initRule() {
    // 流浪控制
    List<FlowRule> flowRules = new ArrayList<>();
    FlowRule rule_flow = new FlowRule();
    // 申明定义资源
    rule_flow.setRefResource("sentinel");
    // 限流阈值类型，QPS 或线程数模式
    // The threshold type of flow control (0: thread count, 1: QPS).
    rule_flow.setGrade(RuleConstant.FLOW_GRADE_QPS);
    // 流控针对的调用来源
    // rule.setLimitApp("");
    // 直接拒绝 / 排队等待 / 慢启动模式
    // 0. default(reject directly), 1. warm up, 2. rate limiter, 3. warm up + rate limiter
    // rule.setControlBehavior(0);
    // 限流阈值
    rule_flow.setCount(2);
    flowRules.add(rule_flow);
    FlowRuleManager.loadRules(flowRules);
    // 熔断降级规则
    List<DegradeRule> degraRules = new ArrayList<>();
    DegradeRule rule_degra = new DegradeRule();
    // 申明熔断资源
    rule_degra.setResource("sentinel");
    // 申明阀值
    rule_degra.setCount(1);
    rule_degra.setGrade(RuleConstant.DEGRADE_GRADE_RT);
    // 降级的时间，单位为 s
    rule_degra.setTimeWindow(10);
    degraRules.add(rule_degra);
    DegradeRuleManager.loadRules(degraRules);
    // 系统保护，此数据最后不要设置，是基于服务器整个控制
    List<SystemRule> sysRules = new ArrayList<>();
    SystemRule rule_sys = new SystemRule();
    // 当系统 load1 超过阈值，且系统当前的并发线程数超过系统容量时才会触发系统保护。系统容量由系统的 maxQps * minRt 计算得出。设定参考值一般是 CPU cores * 2.5。
    rule_sys.setHighestSystemLoad(100);
    // 所有入口流量的平均响应时间
    rule_sys.setAvgRt(1000);
    // 入口流量的最大并发数
    rule_sys.setMaxThread(1000);
    // 所有入口资源的 QPS
    rule_sys.setQps(-1);
    sysRules.add(rule_sys);
    SystemRuleManager.loadRules(sysRules);
    // 授权规则，黑白名单
    AuthorityRule authorRule = new AuthorityRule();
    authorRule.setResource("test");
    authorRule.setStrategy(RuleConstant.AUTHORITY_WHITE);
    authorRule.setLimitApp("appA,appB");
    AuthorityRuleManager.loadRules(Collections.singletonList(authorRule));
    // 热点参数限流
    ParamFlowRule rule = new ParamFlowRule("sentinel").setParamIdx(0).setCount(5);
    // 针对 int 类型的参数 PARAM_B，单独设置限流 QPS 阈值为 10，而不是全局的阈值 5.
    ParamFlowItem item = new ParamFlowItem().setObject(String.valueOf("param")).setClassType(int.class.getName()).setCount(10);
    rule.setParamFlowItemList(Collections.singletonList(item));
    ParamFlowRuleManager.loadRules(Collections.singletonList(rule));
}

Example 32 with DegradeRule

use of com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule in project study-by-myself by Howinfun.

the class SentinelRulesGenerateConfig method onApplicationEvent.

@Override
public void onApplicationEvent(ContextRefreshedEvent contextRefreshedEvent) {
    SentinelRulesProperties sentinelRulesProperties = this.applicationContext.getBean(SentinelRulesProperties.class);
    List<SentinelFlowRule> flowRuleList = sentinelRulesProperties.getFlowRuleList();
    List<SentinelDegradeRule> degradeRuleList = sentinelRulesProperties.getDegradeRuleList();
    final List<FlowRule> flowRules = new ArrayList<>();
    final List<DegradeRule> degradeRules = new ArrayList<>();
    // 处理流控规则
    flowRuleList.forEach(sentinelFlowRule -> {
        FlowRule flowRule = new FlowRule();
        BeanUtils.copyProperties(sentinelFlowRule, flowRule);
        flowRules.add(flowRule);
    });
    // 处理熔断规则
    degradeRuleList.forEach(sentinelDegradeRule -> {
        DegradeRule degradeRule = new DegradeRule();
        BeanUtils.copyProperties(sentinelDegradeRule, degradeRule);
        degradeRules.add(degradeRule);
    });
    FlowRuleManager.loadRules(flowRules);
    DegradeRuleManager.loadRules(degradeRules);
}

Example 33 with DegradeRule

use of com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule in project RuoYi-Cloud-Plus by JavaLionLi.

the class DegradeRuleEntity method toRule.

@Override
public DegradeRule toRule() {
    DegradeRule rule = new DegradeRule();
    rule.setResource(resource);
    rule.setLimitApp(limitApp);
    rule.setCount(count);
    rule.setTimeWindow(timeWindow);
    rule.setGrade(grade);
    if (minRequestAmount != null) {
        rule.setMinRequestAmount(minRequestAmount);
    }
    if (slowRatioThreshold != null) {
        rule.setSlowRatioThreshold(slowRatioThreshold);
    }
    if (statIntervalMs != null) {
        rule.setStatIntervalMs(statIntervalMs);
    }
    return rule;
}

Example 34 with DegradeRule

use of com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule in project Sermant by huaweicloud.

the class DegradeRuleVo method toRule.

@Override
public DegradeRule toRule() {
    DegradeRule rule = new DegradeRule();
    rule.setResource(resource);
    rule.setLimitApp(limitApp);
    rule.setCount(count);
    rule.setTimeWindow(timeWindow);
    rule.setGrade(grade);
    if (minRequestAmount != null) {
        rule.setMinRequestAmount(minRequestAmount);
    }
    if (slowRatioThreshold != null) {
        rule.setSlowRatioThreshold(slowRatioThreshold);
    }
    if (statIntervalMs != null) {
        rule.setStatIntervalMs(statIntervalMs);
    }
    return rule;
}