sentinel-dashboard新降级规则将失败的问题

添加没有持久性的新降级规则将导致监视器失败

2018-08-22 09:48:43 receive rule change:degrade 2018-08-22 09:48:43 [{"count":1.0,"cut":false,"grade":0,"limitApp":"default","passCount":0,"resource":"pact","timeWindow":2}] 2018-08-22 09:48:43 SentinelProperty, config is real updated to: [DegradeRule{resource=null, grade=0, count=1.0, limitApp=null, timeWindow=2}] 2018-08-22 09:48:43 null java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988) at com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager$RulePropertyListener.loadDegradeConf(DegradeRuleManager.java:150) at com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager$RulePropertyListener.configUpdate(DegradeRuleManager.java:120) at com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager$RulePropertyListener.configUpdate(DegradeRuleManager.java:116) at com.alibaba.csp.sentinel.property.DynamicSentinelProperty.updateValue(DynamicSentinelProperty.java:57) at com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager.loadRules(DegradeRuleManager.java:110) at com.alibaba.csp.sentinel.command.handler.ModifyRulesCommandHandler.handle(ModifyRulesCommandHandler.java:110) at com.alibaba.csp.sentinel.transport.command.http.HttpEventTask.run(HttpEventTask.java:89) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)

原提问者GitHub用户zhangguorong1989