org.apache.skywalking.apm.plugin.asf.dubbo

Class DubboInterceptor

java.lang.Object

org.apache.skywalking.apm.plugin.asf.dubbo.DubboInterceptor

All Implemented Interfaces:

InstanceMethodsAroundInterceptor

public class DubboInterceptor
extends Object
implements InstanceMethodsAroundInterceptor

DubboInterceptor define how to enhance class MonitorFilter.invoke(Invoker, Invocation). the trace context transport to the provider side by RpcContext.attachments.but all the version of dubbo framework below 2.8.3 don't support RpcContext.attachments, we support another way to support it.

Constructor Summary

Constructors

Constructor and Description
DubboInterceptor()

Method Summary

Modifier and Type	Method and Description
Object	afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Object ret)
void	beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, MethodInterceptResult result) Consumer:
void	handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes, Throwable t)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DubboInterceptor

public DubboInterceptor()

Method Detail

beforeMethod

public void beforeMethod(EnhancedInstance objInst,
                         Method method,
                         Object[] allArguments,
                         Class<?>[] argumentsTypes,
                         MethodInterceptResult result)
                  throws Throwable

Consumer:

The serialized trace context data will inject to the RpcContext.attachments for transport to provider side.

Provider:

The serialized trace context data will extract from RpcContext.attachments. current trace segment will ref if the serialize context data is not null.

Specified by:

beforeMethod in interface InstanceMethodsAroundInterceptor

Throws:

Throwable

afterMethod

public Object afterMethod(EnhancedInstance objInst,
                          Method method,
                          Object[] allArguments,
                          Class<?>[] argumentsTypes,
                          Object ret)
                   throws Throwable

Specified by:

afterMethod in interface InstanceMethodsAroundInterceptor

Throws:

Throwable

handleMethodException

public void handleMethodException(EnhancedInstance objInst,
                                  Method method,
                                  Object[] allArguments,
                                  Class<?>[] argumentsTypes,
                                  Throwable t)

Specified by:

handleMethodException in interface InstanceMethodsAroundInterceptor