private static String buildDiscardFlag(boolean discard) {
        return discard ? "1" : "0";
    }
Audit item ID generation rules: composed of basic audit item ID + extension bits.
Each module is assigned two basic audit item IDs, namely reception and transmission.
Based on reception and transmission, and expanded through extension bits,
audit item IDs such as success and failure, real-time and non-real-time, retry and discard can be generated.
inlong-audit/audit-sdk/src/main/java/org/apache/inlong/audit/util/AuditManagerUtils.java