[英]Spring Boot Filter not filtering all my logs
I have a Filter set up in my Spring Boot app to add some information to the MDC:我在 Spring Boot 应用程序中设置了一个过滤器来向 MDC 添加一些信息:
@Component
public class LogFilter implements Filter {
@Override
public void init(FilterConfig var1) throws ServletException {}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
try {
MDC.put("tag", "Some information);
chain.doFilter(request, response);
} finally {
MDC.clear();
}
}
@Override
public void destroy() { }
}
This works fine for most of my application, but for certain operations where a thread is spawned, this filter is not picking up those messages.这对于我的大多数应用程序来说都很好,但是对于生成线程的某些操作,此过滤器不会接收这些消息。
For example, in the block below, the callback methods occur in a separate thread, so the first log.info
call is getting picked up by my LogFilter
, but the log.info
and log.error
in my callbacks aren't.例如,在下面的块中,回调方法发生在一个单独的线程中,所以第一个
log.info
调用被我的LogFilter
,但我的回调中的log.info
和log.error
不是。
private void publishMessage(String message) {
log.info("Message received. Sending to Kafka topic");
CompletableFuture<ListenableFuture<SendResult<String, String>>> future = CompletableFuture.supplyAsync(() -> kafkaTemplate.send("myTopic", message));
try {
future.get().addCallback(new ListenableFutureCallback<SendResult<String, String>>() {
@Override
public void onSuccess(SendResult<String, String> result) {
log.info("Kafka topic " + myTopic + " published to successfully");
}
@Override
public void onFailure(Throwable ex) {
log.error("Kafka error: " + ex.getMessage());
}
});
} catch (Exception e) {
log.error("Kafka has failed you for the last time");
}
}
In general, it seems like any log event that doesn't occur in one of the http-nio-8080-exec-X
threads bypasses LogFilter
.一般来说,似乎没有在
http-nio-8080-exec-X
线程之一中发生的任何日志事件都会绕过LogFilter
。 What am I doing wrong?我究竟做错了什么?
Things I've tried that haven't worked:我尝试过但没有奏效的事情:
LogFilter
extend GenericFilterBean
, use @Bean
instead of @Component
, and then registering that bean with FilterRegistrationBean
in my main Application classLogFilter
延长GenericFilterBean
,使用@Bean
代替@Component
,然后注册这个bean与FilterRegistrationBean
在我的主应用程序类@WebFilter(urlPatterns = {"/*"}, description = "MDC Filter")
and/or @ServletComponentScan
@WebFilter(urlPatterns = {"/*"}, description = "MDC Filter")
和/或@ServletComponentScan
MDC context is only available for the current running thread but your callback will be called within a different thread. MDC 上下文仅适用于当前正在运行的线程,但您的回调将在不同的线程中调用。
one way to deal with it is to implement ListenableFutureCallback
:处理它的一种方法是实现
ListenableFutureCallback
:
private static class MyListenableFutureCallback
implements ListenableFutureCallback<SendResult<String, String>> {
private Map<String,String> contextMap = MDC.getCopyOfContextMap();
@Override
public void onSuccess(SendResult<String, String> result) {
MDC.setContextMap(contextMap); //add MDC context here
log.info("Kafka topic " + myTopic + " published to successfully");
}
@Override
public void onFailure(Throwable ex) {
MDC.setContextMap(contextMap); //add MDC context here
log.error("Kafka error: " + ex.getMessage());
}
}
and finally:最后:
future.get().addCallback(new MyListenableFutureCallback()).
a more consistant way of doing this is described Here这里描述了一种更一致的方法
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