标签:spring-boot-actuator java spring spring-boot
我想做一个取决于应用程序正常运行时间的自定义HealthIndicator.
@Component
public class HealthActuator implements HealthIndicator {
private final MetricsEndpoint metricsEndpoint;
@Autowired
public HealthActuator(MetricsEndpoint metricsEndpoint) {
this.metricsEndpoint = metricsEndpoint;
}
@Override
public Health health() {
long uptime = (Long) metricsEndpoint.invoke().get("uptime");
// logic with uptime
return Health.up().build();
}
}
但是有一个错误:应用程序上下文中的两个bean之间存在循环依赖关系.
我可以通过休息调用我的端点/执行器/健康来获得正常运行时间指标.
但也许有可能以编程方式进行吗?
附:记录堆栈跟踪:
11-01 14:34:09 WARN org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'healthActuator' defined in file [/Users/serge/projects/bb/bb-imapl/target/classes/bb/imapl/config/HealthActuator.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration$$EnhancerBySpringCGLIB$$2bb06d4a]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'healthActuator': Requested bean is currently in creation: Is there an unresolvable circular reference?
11-01 14:34:09 WARN org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'healthActuator' defined in file [/Users/serge/projects/bb/bb-imapl/target/classes/bb/imapl/config/HealthActuator.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration$$EnhancerBySpringCGLIB$$2bb06d4a]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'healthActuator': Requested bean is currently in creation: Is there an unresolvable circular reference?
11-01 14:34:09 ERROR org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter -
***************************
APPLICATION FAILED TO START
***************************
Description:
There is a circular dependency between 2 beans in the application context:
- healthActuator defined in file [/Users/serge/projects/bb/bb-imapl/target/classes/bb/imapl/config/HealthActuator.class]
- org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration
- healthActuator
11-01 14:34:09 ERROR org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter -
解决方法:
EndpointAutoConfiguration对HealthIndicator(使用HealthActuator实现)具有依赖性.
所以你最终得到循环依赖.当2个bean需要彼此实例化自己时(通过构造函数注入),就会发生这种情况.
您可以使用setter注入来打破循环:
@Component
public class HealthActuator implements HealthIndicator {
private MetricsEndpoint metricsEndpoint;
@Autowired
private void setMetricsEndpoint(MetricsEndpoint metricsEndpoint) {
this.metricsEndpoint = metricsEndpoint;
}
public HealthActuator() {
}
@Override
public Health health() {
long uptime = (Long) metricsEndpoint.invoke().get("uptime");
// logic with uptime
return Health.up().build();
}
}
标签:spring-boot-actuator,java,spring,spring-boot 来源: https://codeday.me/bug/20190722/1502155.html
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