Method annotateEvent

flow/Trace.cpp:358–377

	}

	void annotateEvent(TraceEventFields& fields) {
		MutexHolder holder(mutex);
		if (!opened || fields.isAnnotated())
			return;
		if (localAddress.present()) {
			fields.addField("Machine", formatIpPort(localAddress.get().ip, localAddress.get().port));
		}
		fields.addField("LogGroup", logGroup);

		RoleInfo const& r = mutateRoleInfo();
		if (r.rolesString.size() > 0) {
			fields.addField("Roles", r.rolesString);
		}

		for (auto const& field : universalFields) {
			fields.addField(field.first, field.second);
		}

		fields.setAnnotated();
	}

	void writeEvent(TraceEventFields fields, std::string trackLatestKey, bool trackError) {
		MutexHolder hold(mutex);