not able to get parent span, send from Client service to Server service

[mayur-more]

I am new to OpenTelemetry word. I want to auto-instrument my 2 services. I have created spans for my services separately, but when i am try to combine spans of two different services, I am not able to do it successfully. I have used following code:

I have added two modules(client and server) under opentelemetry-java-instrumentation/instrumentation/
This is code before i have added code for context propagation.
Client Advice class:
public static class ClientAdvice {
@Advice.OnMethodEnter
public static void onEnter(
@Advice.Origin String origin,
@Advice.Local("otelContext") Context context,
@Advice.Local("otelScope") Scope scope) {

String subStr = origin.substring(0, origin.indexOf("(") + 1);
String operation = subStr.substring(subStr.lastIndexOf(".") + 1, subStr.indexOf("("));

Tracer tracer = GlobalOpenTelemetry.getTracer("test");
Span span = tracer.spanBuilder("/" + operation).setSpanKind(SpanKind.CLIENT).startSpan();
scope = span.makeCurrent();

if (span != null) {
span.setAttribute("method_name", origin);
}
}

@Advice.OnMethodExit
public static void onExit(
@Advice.Origin String origin,
@Advice.Local("otelContext") Context context,
@Advice.Local("otelScope") Scope scope) {

Span span = Span.current();
scope = span.makeCurrent();
scope.close();
span.end();
}
}

Server Advice class:
public static class CidsAdvice {
@Advice.OnMethodEnter
public static void onEnter(@Advice.Origin String origin) {

String subStr = origin.substring(0, origin.indexOf("(") + 1);
String operation = subStr.substring(subStr.lastIndexOf(".") + 1, subStr.indexOf("("));

Tracer tracer = GlobalOpenTelemetry.getTracer("test");
Span span = tracer.spanBuilder("/" + operation).startSpan();
Scope scope = span.makeCurrent();

if (span != null) {
span.setAttribute("method_name", origin);
}
}

@Advice.OnMethodExit
public static void onExit(@Advice.Origin String origin) {

Span span = Span.current();
Scope scope = span.makeCurrent();
scope.close();
span.end();
}
}

Can someone help me to get all the spans of these both services under one trace, please.

[anuraaga]

Hi @mayur-more - you want to use GlobalOpenTelemetry.get() to access OpenTelemetry, not SdkConfiguration.initOpenTelemetry(); I think

[mayur-more]

Yes, I have updated the code and tried with Tracer tracer = GlobalOpenTelemetry.getTracer("test"); as well, but no luck.

[trask]

hey @mayur-more, if you can point us to your full repository that may help us to see what you are trying to do and where maybe the problem is

[mayur-more]

Hi, I am able to resolve this issue. Previously, I have commented out all other modules from settings.gradle
Yesterday, I just tried to remove that comments and send traces, now i can see all server and client spans attached.
Thanks all.