Jane He created CASSJAVA-97:
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Summary: Let users inject an ID for each request and write to the
custom payload
Key: CASSJAVA-97
URL: https://issues.apache.org/jira/browse/CASSJAVA-97
Project: Apache Cassandra Java driver
Issue Type: Improvement
Reporter: Jane He
Assignee: Jane He
Currently `CqlRequestHandler` creates `logPrefix` to identify each request, but
this logPrefix generation logic is fixed and built-in. We should expose an
interface to let the users generate and inject whatever ID they want. We should
also enable an option to write such ID to the custom payload, so that this ID
can be propagated to the server side for better traceability. This feature will
be specifically useful for Astra.
I propose the following interface
{code:java}
public interface DistributedTraceIdGenerator {
String getSessionRequestId(@NonNull Request statement);
String getNodeRequestId(@NonNull Request statement, @Nullable String
sessionRequestId);
}
{code}
And the following options in application.conf
{code:java}
advanced.distributed-tracing{
id-generator{
# The component that generates unique identifiers for distributed tracing.
class = NoopDistributedTraceIdGenerator
}
# add the trace-id to the custom payload with the given key
# if empty, the trace-id will not be added to the custom payload
custom-payload-with-key = ""
} {code}
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