Function truncate_content_payload

uncommon_route/content_capture.py:270–300

Return a reduced copy of the row whose JSON-encoded size <= cap_bytes. The input row is not mutated. Drop order: response_text -> response_tool_calls -> request_messages (oldest first).

(
    row: dict[str, Any], *, cap_bytes: int = 64 * 1024
)

# --- Truncation ---------------------------------------------------------------

def truncate_content_payload(
    row: dict[str, Any], *, cap_bytes: int = 64 * 1024
) -> tuple[dict[str, Any], bool]:
    """Return a reduced copy of the row whose JSON-encoded size <= cap_bytes.

    The input row is not mutated. Drop order:
    response_text -> response_tool_calls -> request_messages (oldest first).
    """
    out = dict(row)

    def _size() -> int:
        return len(json.dumps(out, default=str, ensure_ascii=False).encode("utf-8"))

    if _size() <= cap_bytes:
        return out, False

    if out.get("response_text"):
        out["response_text"] = ""
    if _size() <= cap_bytes:
        return out, True

    if out.get("response_tool_calls"):
        out["response_tool_calls"] = []
    if _size() <= cap_bytes:
        return out, True

    msgs = list(out.get("request_messages") or [])
    while msgs and _size() > cap_bytes:
        msgs.pop(0)
        out["request_messages"] = msgs
    return out, True