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Posted to notifications@skywalking.apache.org by GitBox <gi...@apache.org> on 2021/05/06 10:42:27 UTC
[GitHub] [skywalking] woshishitou opened a new issue #6900: SpringcloudGateway can't get traceId
woshishitou opened a new issue #6900:
URL: https://github.com/apache/skywalking/issues/6900
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [√] Question or discussion
- [ ] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
___
### Question
- What do you want to know?
Why I can't get traceId? And how can I get it in gateway?
___
### Bug
- Which version of SkyWalking, OS, and JRE?
- Which company or project?
- What happened?
If possible, provide a way to reproduce the error. e.g. demo application, component version.
My code is below
___
### Requirement or improvement
- Please describe your requirements or improvement suggestions.
Skywalking: 8.4
SpringcloudGateway: 2.1.1
Springcloud: Greenwich.SR1
Springboot: 2.1.6
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001298651
>
`
// 获取skywalking设置到exchange中的span实例，并使用反射获取其owner字段（该字段从父类的父类继承而来，类型为TracingContext）
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
// 利用反射调用owner的getReadablePrimaryTraceId()方法，以获取traceId
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
`
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833427133
Is that what I'm getting wrong？
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001298651
```java
// 获取skywalking设置到exchange中的span实例，并使用反射获取其owner字段（该字段从父类的父类继承而来，类型为TracingContext）
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
// 利用反射调用owner的getReadablePrimaryTraceId()方法，以获取traceId
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
```
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001299649
>
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
-----------------------------------------------------------------------------
You need to write this code in the filter method.
Hope it helps you.
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-913945335
There are related classes in the skywalking source code in this picture.
Finally, you can get the traceid through the method getReadablePrimaryTraceId() in interface AbstractTracerContext.
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[GitHub] [skywalking] woshishitou removed a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou removed a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833424090
`package com.example.gatewaydemo.filter;
import org.apache.skywalking.apm.toolkit.trace.TraceContext;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Configuration
public class FilterConfig {
@Bean
public GlobalFilter b() {
return new BFilter();
}
public class BFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// 这里获取到的traceId是N/A
exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
return chain.filter(exchange).then(Mono.fromRunnable(() ->
{
// 这里获取到的也是N/A
String traceId2 = TraceContext.traceId();
System.out.println("traceId:" + traceId2);
}));
}
@Override
public int getOrder() {
return 1;
}
}
}
`
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[GitHub] [skywalking] wu-sheng commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
wu-sheng commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833431713
Gateway has a complex thread model, you only could get value when your codes and skywalking instrument codes sharing thread.
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001299649
>
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
You need to write this code in the filter method.
Hope it helps you.
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[GitHub] [skywalking] woshishitou removed a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou removed a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833424297
`
package com.example.gatewaydemo.filter;
import org.apache.skywalking.apm.toolkit.trace.TraceContext;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Configuration
public class FilterConfig {
@Bean
public GlobalFilter b() {
return new BFilter();
}
public class BFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// 这里获取到的traceId是N/A
exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
return chain.filter(exchange).then(Mono.fromRunnable(() ->
{
// 这里获取到的也是N/A
String traceId2 = TraceContext.traceId();
System.out.println("traceId:" + traceId2);
}));
}
@Override
public int getOrder() {
return 1;
}
}
}
`
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833424297
`
package com.example.gatewaydemo.filter;
import org.apache.skywalking.apm.toolkit.trace.TraceContext;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Configuration
public class FilterConfig {
@Bean
public GlobalFilter b() {
return new BFilter();
}
public class BFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// 这里获取到的traceId是N/A
exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
return chain.filter(exchange).then(Mono.fromRunnable(() ->
{
// 这里获取到的也是N/A
String traceId2 = TraceContext.traceId();
System.out.println("traceId:" + traceId2);
}));
}
@Override
public int getOrder() {
return 1;
}
}
}
`
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001299649
>
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
You need to write this code in the filter method.
Hope it helps you.
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833424090
`package com.example.gatewaydemo.filter;
import org.apache.skywalking.apm.toolkit.trace.TraceContext;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Configuration
public class FilterConfig {
@Bean
public GlobalFilter b() {
return new BFilter();
}
public class BFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// 这里获取到的traceId是N/A
exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
return chain.filter(exchange).then(Mono.fromRunnable(() ->
{
// 这里获取到的也是N/A
String traceId2 = TraceContext.traceId();
System.out.println("traceId:" + traceId2);
}));
}
@Override
public int getOrder() {
return 1;
}
}
}
`
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[GitHub] [skywalking] ralphgj commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
ralphgj commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-871862122
Try to get traceid by implementing method of `HttpHeadersFilter#filter`
> > `
> > 包com.example.gatewaydemo.filter;
> > 导入org.apache.skywalking.apm.toolkit.trace.TraceContext;
> > 导入org.springframework.cloud.gateway.filter.GatewayFilterChain;
> > 导入org.springframework.cloud.gateway.filter.GlobalFilter;
> > 导入org.springframework.context.annotation.Bean;
> > 导入org.springframework.context.annotation.Configuration;
> > 导入org.springframework.core.Ordered;
> > 导入org.springframework.web.server.ServerWebExchange;
> > 导入reactor.core.publisher.Mono;
> > @configuration
> > 公共类FilterConfig {
> > ```
> > @Bean
> > public GlobalFilter b() {
> > return new BFilter();
> > }
> >
> > public class BFilter implements GlobalFilter, Ordered {
> >
> > @Override
> > public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
> > // The value here is N/A
> > exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
> > return chain.filter(exchange).then(Mono.fromRunnable(() ->
> > {
> > // The value here is also N/A
> > String traceId2 = TraceContext.traceId();
> > System.out.println("traceId:" + traceId2);
> > }));
> > }
> >
> > @Override
> > public int getOrder() {
> > return 1;
> > }
> > }
> > ```
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > }
> > `
>
> Hello, I also encountered this problem. Using TraceContext.traceId() in the gateway, the traceId cannot be obtained. How did you solve it?
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-913945204
There are related classes in the skywalking source code in this picture.
Finally, you can get the traceid through the method getReadablePrimaryTraceId() in interface AbstractTracerContext.
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[GitHub] [skywalking] woshishitou removed a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou removed a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001298651
```java
// 获取skywalking设置到exchange中的span实例，并使用反射获取其owner字段（该字段从父类的父类继承而来，类型为TracingContext）
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
// 利用反射调用owner的getReadablePrimaryTraceId()方法，以获取traceId
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
```
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001299649
>
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
You need to write this code in the filter method.
Hope it helps you.
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-913942649
> > `
> > 包com.example.gatewaydemo.filter;
> > 导入org.apache.skywalking.apm.toolkit.trace.TraceContext;
> > 导入org.springframework.cloud.gateway.filter.GatewayFilterChain;
> > 导入org.springframework.cloud.gateway.filter.GlobalFilter;
> > 导入org.springframework.context.annotation.Bean;
> > 导入org.springframework.context.annotation.Configuration;
> > 导入org.springframework.core.Ordered;
> > 导入org.springframework.web.server.ServerWebExchange;
> > 导入reactor.core.publisher.Mono;
> > @configuration
> > 公共类FilterConfig {
> > ```
> > @Bean
> > public GlobalFilter b() {
> > return new BFilter();
> > }
> >
> > public class BFilter implements GlobalFilter, Ordered {
> >
> > @Override
> > public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
> > // The value here is N/A
> > exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
> > return chain.filter(exchange).then(Mono.fromRunnable(() ->
> > {
> > // The value here is also N/A
> > String traceId2 = TraceContext.traceId();
> > System.out.println("traceId:" + traceId2);
> > }));
> > }
> >
> > @Override
> > public int getOrder() {
> > return 1;
> > }
> > }
> > ```
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > }
> > `
>
> Hello, I also encountered this problem. Using TraceContext.traceId() in the gateway, the traceId cannot be obtained. How did you solve it?
Hello，I got the traceid through reflection. Through debug, we can see that there is the traceId we need in the exchange object
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[GitHub] [skywalking] woshishitou removed a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou removed a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-913945204
There are related classes in the skywalking source code in this picture.
Finally, you can get the traceid through the method getReadablePrimaryTraceId() in interface AbstractTracerContext.
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[GitHub] [skywalking] xiaozuo2020 commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
xiaozuo2020 commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001848175
>
> >
>
> Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
>
> Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
>
> Field field = entrySpanClazz.getDeclaredField("owner");
>
> field.setAccessible(true);
>
> Object ownerInstance = field.get(entrySpanInstance);
>
> Class<?> ownerClazz = ownerInstance.getClass();
>
> Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
>
> String traceId = (String) getTraceId.invoke(ownerInstance);
>
> 您需要在过滤器方法中编写此代码。
>
> 希望对你有帮助。
3q,so much!!!
that day, I found another way
modify the 2.1x gateway plugin，this plugin includ webflux plugin code
then i can get traceID in attributes
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[GitHub] [skywalking] xiaozuo2020 commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
xiaozuo2020 commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1000999397
> There are related classes in the skywalking source code in this picture. Finally, you can get the traceid through the method getReadablePrimaryTraceId() in interface AbstractTracerContext. 
hello could you show me the code? I try to get the traceID by reflection,but i am failed
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[GitHub] [skywalking] woshishitou edited a comment on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou edited a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001298651
>
`// 获取skywalking设置到exchange中的span实例，并使用反射获取其owner字段（该字段从父类的父类继承而来，类型为TracingContext）
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
// 利用反射调用owner的getReadablePrimaryTraceId()方法，以获取traceId
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);`
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[GitHub] [skywalking] wu-sheng closed issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
wu-sheng closed issue #6900:
URL: https://github.com/apache/skywalking/issues/6900
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[GitHub] [skywalking] wu-sheng commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
wu-sheng commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833425187
We never said you could always have trace id. You misunderstand the feature I think.
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-1001298651
>
` // 获取skywalking设置到exchange中的span实例，并使用反射获取其owner字段（该字段从父类的父类继承而来，类型为TracingContext）
Object entrySpanInstance = exchange.getAttributes().get("SKYWALING_SPAN");
Class<?> entrySpanClazz = entrySpanInstance.getClass().getSuperclass().getSuperclass();
Field field = entrySpanClazz.getDeclaredField("owner");
// 利用反射调用owner的getReadablePrimaryTraceId()方法，以获取traceId
field.setAccessible(true);
Object ownerInstance = field.get(entrySpanInstance);
Class<?> ownerClazz = ownerInstance.getClass();
Method getTraceId = ownerClazz.getMethod("getReadablePrimaryTraceId");
String traceId = (String) getTraceId.invoke(ownerInstance);
`
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833425033
`
package com.example.gatewaydemo.filter;
import org.apache.skywalking.apm.toolkit.trace.TraceContext;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Configuration
public class FilterConfig {
@Bean
public GlobalFilter b() {
return new BFilter();
}
public class BFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// The value here is N/A
exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
return chain.filter(exchange).then(Mono.fromRunnable(() ->
{
// The value here is also N/A
String traceId2 = TraceContext.traceId();
System.out.println("traceId:" + traceId2);
}));
}
@Override
public int getOrder() {
return 1;
}
}
}
`
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833433356
Although I don't quite understand, but thank you for your explanation
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[GitHub] [skywalking] 504099993 commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
504099993 commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-844175401
> `
> 包com.example.gatewaydemo.filter;
>
> 导入org.apache.skywalking.apm.toolkit.trace.TraceContext;
> 导入org.springframework.cloud.gateway.filter.GatewayFilterChain;
> 导入org.springframework.cloud.gateway.filter.GlobalFilter;
> 导入org.springframework.context.annotation.Bean;
> 导入org.springframework.context.annotation.Configuration;
> 导入org.springframework.core.Ordered;
> 导入org.springframework.web.server.ServerWebExchange;
> 导入reactor.core.publisher.Mono;
>
> @configuration
> 公共类FilterConfig {
>
> ```
> @Bean
> public GlobalFilter b() {
> return new BFilter();
> }
>
> public class BFilter implements GlobalFilter, Ordered {
>
> @Override
> public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
> // The value here is N/A
> exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
> return chain.filter(exchange).then(Mono.fromRunnable(() ->
> {
> // The value here is also N/A
> String traceId2 = TraceContext.traceId();
> System.out.println("traceId:" + traceId2);
> }));
> }
>
> @Override
> public int getOrder() {
> return 1;
> }
> }
> ```
>
> }
>
> `
Hello, I also encountered this problem. Using TraceContext.traceId() in the gateway, the traceId cannot be obtained. How did you solve it?
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[GitHub] [skywalking] woshishitou commented on issue #6900: SpringcloudGateway can't get traceId
Posted by GitBox <gi...@apache.org>.
woshishitou commented on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833426839
https://github.com/apache/skywalking/issues/3891
But he got the value here，we use the same method.
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