I've recently upgraded my applications to Spring Boot 2.4.2, Cloud 2020.0.0, changing Spring Cloud GCP dependencies following the migration guide: https://googlecloudplatform.github.io/spring-cloud-gcp/2.0.0/reference/html/index.html#migration-guide-from-spring-cloud-gcp-1-x-to-2-x
Regarding the applications everything seems to be working fine. I can see calls between the microservices propagating the trace-id headers:
gateway:
2021-01-24 20:18:36.471 DEBUG [gateway,0bc6b9664e6604e2,eb9f834718fe33c9] 1 ---
service1:
2021-01-24 20:18:36.700 DEBUG [service1,0bc6b9664e6604e2,570653ac93add270,true]
In the Google Cloud Trace console I can see that the trace id (0bc6b9664e6604e2) was captured (prefixed with 16 extra 0's) and that it shows both microservices (the first post corresponds to gateway and the third call correspons to service1:
However notice the message "No logs found for this trace".
Also the Trace Logs View link complaints about it:
If I open the link it just looks by timestamp, not using the correlation trace id.
The funny thing is if I look for a log statement directly in the GCP Logging view, the trace id is there:
I can then run a GCP Logging query to find all the logs correctly:
Apparently everything seems to be OK. Could you tell why GCP Trace isn't able to correlate with GCP Logging?
For the logs to appear correlated with tracing you need to add the stackdriver log dependency (I think it only works if your log implementation is logback).
Check https://cloud.spring.io/spring-cloud-gcp/reference/html/#integration-with-logging