package com.navercorp.pinpoint.plugin.dubbo.interceptor;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.RpcContext;
import com.alibaba.dubbo.rpc.RpcInvocation;
import com.navercorp.pinpoint.bootstrap.context.*;
import com.navercorp.pinpoint.bootstrap.interceptor.AroundInterceptor1;
import com.navercorp.pinpoint.plugin.dubbo.DubboConstants;
/**
* @author Jinkai.Ma
*/
public class DubboConsumerInterceptor implements AroundInterceptor1 {
private final MethodDescriptor descriptor;
private final TraceContext traceContext;
public DubboConsumerInterceptor(TraceContext traceContext, MethodDescriptor descriptor) {
this.descriptor = descriptor;
this.traceContext = traceContext;
}
@Override
public void before(Object target, Object arg0) {
Trace trace = this.getTrace(target);
if (trace == null) {
return;
}
RpcInvocation invocation = (RpcInvocation) arg0;
if (trace.canSampled()) {
SpanEventRecorder recorder = trace.traceBlockBegin();
// RPC call trace have to be recorded with a service code in RPC client code range.
recorder.recordServiceType(DubboConstants.DUBBO_CONSUMER_SERVICE_TYPE);
// You have to issue a TraceId the receiver of this request will use.
TraceId nextId = trace.getTraceId().getNextTraceId();
// Then record it as next span id.
recorder.recordNextSpanId(nextId.getSpanId());
// Finally, pass some tracing data to the server.
// How to put them in a message is protocol specific.
// This example assumes that the target protocol message can include any metadata (like HTTP headers).
invocation.setAttachment(DubboConstants.META_TRANSACTION_ID, nextId.getTransactionId());
invocation.setAttachment(DubboConstants.META_SPAN_ID, Long.toString(nextId.getSpanId()));
invocation.setAttachment(DubboConstants.META_PARENT_SPAN_ID, Long.toString(nextId.getParentSpanId()));
invocation.setAttachment(DubboConstants.META_PARENT_APPLICATION_TYPE, Short.toString(traceContext.getServerTypeCode()));
invocation.setAttachment(DubboConstants.META_PARENT_APPLICATION_NAME, traceContext.getApplicationName());
invocation.setAttachment(DubboConstants.META_FLAGS, Short.toString(nextId.getFlags()));
} else {
// If sampling this transaction is disabled, pass only that infomation to the server.
invocation.setAttachment(DubboConstants.META_DO_NOT_TRACE, "1");
}
}
@Override
public void after(Object target, Object arg0, Object result, Throwable throwable) {
Trace trace = this.getTrace(target);
if (trace == null) {
return;
}
RpcInvocation invocation = (RpcInvocation) arg0;
try {
SpanEventRecorder recorder = trace.currentSpanEventRecorder();
recorder.recordApi(descriptor);
if (throwable == null) {
String endPoint = RpcContext.getContext().getRemoteAddressString();
// RPC client have to record end point (server address)
recorder.recordEndPoint(endPoint);
// Optionally, record the destination id (logical name of server. e.g. DB name)
recorder.recordDestinationId(endPoint);
recorder.recordAttribute(DubboConstants.DUBBO_ARGS_ANNOTATION_KEY, invocation.getArguments());
recorder.recordAttribute(DubboConstants.DUBBO_RESULT_ANNOTATION_KEY, result);
} else {
recorder.recordException(throwable);
}
} finally {
trace.traceBlockEnd();
}
}
private Trace getTrace(Object target) {
Invoker invoker = (Invoker) target;
// Ignore monitor service.
if (DubboConstants.MONITOR_SERVICE_FQCN.equals(invoker.getInterface().getName())) {
return null;
}
return traceContext.currentTraceObject();
}
}