In the user model class, the application manually creates subsegments to group all
downstream calls made within the saveUser function and adds metadata.
Example src/main/java/scorekeep/UserModel.java
import com.amazonaws.xray.AWSXRay;
import com.amazonaws.xray.entities.Subsegment;
...
public void saveUser(User user) {
// Wrap in subsegment
Subsegment subsegment = AWSXRay.beginSubsegment("## UserModel.saveUser");
try {
mapper.save(user);
} catch (Exception e) {
subsegment.addException(e);
throw e;
} finally {
AWSXRay.endSubsegment();
}
}