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Posted to commits@servicecomb.apache.org by GitBox <gi...@apache.org> on 2019/12/27 02:34:05 UTC
[GitHub] [servicecomb-java-chassis] hongfeihuangseu opened a new issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
hongfeihuangseu opened a new issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
URL: https://github.com/apache/servicecomb-java-chassis/issues/1497
现在业务貌似获取不到熔断这个事件，只有cse知道
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[GitHub] [servicecomb-java-chassis] hongfeihuangseu commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
Posted by GitBox <gi...@apache.org>.
hongfeihuangseu commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
URL: https://github.com/apache/servicecomb-java-chassis/issues/1497#issuecomment-569206075
markEvent通过post把熔断事件放进EventBus，那在业务端是通过com.google.common.eventbus.Subscribe注解来获取事件通知吗
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[GitHub] [servicecomb-java-chassis] yhs0092 commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
Posted by GitBox <gi...@apache.org>.
yhs0092 commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
URL: https://github.com/apache/servicecomb-java-chassis/issues/1497#issuecomment-569380792
是不是没有触发熔断啊。
我基于[微服务21天培训课程](https://education.huaweicloud.com:8443/courses/course-v1:HuaweiX+CBUCNXP012+Self-paced/courseware/9d1e7d073ba04f6ebc11d984dbc72eb5/4e114502a206474482dd72fa98409caa/)里面第九天的demo，加了一个listener监听事件
```java
package microservice.demo.training21days.edge.listener;
import org.apache.servicecomb.bizkeeper.event.CircutBreakerEvent;
import org.apache.servicecomb.common.rest.codec.RestObjectMapperFactory;
import org.apache.servicecomb.foundation.common.event.EventManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.common.eventbus.Subscribe;
@Component
public class CircuitBreakListener implements InitializingBean {
private static final Logger LOGGER = LoggerFactory.getLogger(CircuitBreakListener.class);
@Subscribe
public void onCircuitBreakEventHappen(CircutBreakerEvent event) {
try {
LOGGER.info("event happen! {}", RestObjectMapperFactory.getRestObjectMapper().writeValueAsString(event));
} catch (JsonProcessingException e) {
LOGGER.info("failed to write ", e);
}
}
@Override
public void afterPropertiesSet() throws Exception {
EventManager.register(this);
LOGGER.info("registered!");
}
}
```
发现是可以生效的。会打印像这样的日志
熔断触发：
```
2019-12-28 11:18:57,155 [INFO] event happen! {"type":"OPEN","role":"CONSUMER","microservice":"consumer","schema":"helloConsumer","operation":"sayHello","currentTotalRequest":3,"currentErrorCount":100,"currentErrorPercentage":3,"requestVolumeThreshold":3,"sleepWindowInMilliseconds":30000,"errorThresholdPercentage":50} microservice.demo.training21days.edge.listener.CircuitBreakListener.onCircuitBreakEventHappen(CircuitBreakListener.java:22)
```
熔断恢复：
```
2019-12-28 11:25:53,837 [INFO] event happen! {"type":"CLOSE","role":"CONSUMER","microservice":"consumer","schema":"helloConsumer","operation":"sayHello","currentTotalRequest":0,"currentErrorCount":0,"currentErrorPercentage":0,"requestVolumeThreshold":3,"sleepWindowInMilliseconds":30000,"errorThresholdPercentage":50} microservice.demo.training21days.edge.listener.CircuitBreakListener.onCircuitBreakEventHappen(CircuitBreakListener.java:22)
```
如果你那边触发不了的话，建议去`CircutBreakerEventNotifier`里面打个断点检查一下
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[GitHub] [servicecomb-java-chassis] yhs0092 commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
Posted by GitBox <gi...@apache.org>.
yhs0092 commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
URL: https://github.com/apache/servicecomb-java-chassis/issues/1497#issuecomment-569172471
可以参考一下Java-Chassis中`org.apache.servicecomb.bizkeeper.event.CircutBreakerEventNotifier`类的代码。熔断发生和恢复时这个类会向EventBus中发布事件。
你可以从`EventManager.getEventBus()`方法获取EventBus，来监听`org.apache.servicecomb.bizkeeper.event.CircutBreakerEvent`事件
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[GitHub] [servicecomb-java-chassis] hongfeihuangseu commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
Posted by GitBox <gi...@apache.org>.
hongfeihuangseu commented on issue #1497: 业务如果想在发生熔断的时候，在业务日志打个error日志，这个怎么做呢？
URL: https://github.com/apache/servicecomb-java-chassis/issues/1497#issuecomment-569259549
熔断的register这个日志可以打，但是outputToLog这个再触发熔断后没有调进来打印，请问怎么解决呢
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