spring sleuth baggage propagation not getting propagated/working - spring

Question

We are currently using sleuth 2.2.3.RELEASE, and we couldn't see the field userId passed in http headers are not propagating. Below is our code.
BaggageField REQUEST_ID = BaggageField.create("x-vcap-request-id");
BaggageField USER_ID = BaggageField.create("userId");
Tracing.newBuilder().propagationFactory(
BaggagePropagation.newFactoryBuilder(B3Propagation.FACTORY)
.add(SingleBaggageField.remote(REQUEST_ID))
.add(SingleBaggageField.newBuilder(USER_ID).addKeyName("baggage-user-id").build())
.build());
We doubt that some issue in YML file. We tried with all the below options but none is working.
#1 baggage-keys: baggage-user-id
#2 propagation-keys: baggage-user-id
#3 baggage-keys: user-id
In logback:
%X{baggage-user-id:-}
We are passing userId as in http header.

Answer 1

Please do not create your own instance of tracing. You can create beans that will end up inside the tracing bean.
Here you have an example that uses the latest 3.x api
spring:
sleuth:
baggage:
correlation-fields:
- TEST-COMMUNICATION-TYPE
remote-fields:
- TEST-COMMUNICATION-TYPE
Old, deprecated api
spring:
application:
name: service1
sleuth:
baggage-keys:
- baggage
- key
log.slf4j.whitelisted-mdc-keys:
- key
How we retrieve baggage
log.info("Service2: Baggage for [key] is [" + BaggageField.getByName("key") + "]");
How we set the baggage
String baggageKey = "key";
String baggageValue = "foo";
BaggageField baggageField = BaggageField.create(baggageKey);
baggageField.updateValue(baggageValue);