Imports go.mongodb.org/mongo-driver/event github.com/signalfx/signalfx-go-tracing/ddtrace github.com/signalfx/signalfx-go-tracing/ddtrace/ext github.com/signalfx/signalfx-go-tracing/ddtrace/tracer go.mongodb.org/mongo-driver/bson Standard library imports context fmt strings sync