Byted Antiddospro Hostops

{
  "skill_name": "byted-antiddospro-hostops",
  "evals": [
    {
      "id": 1,
      "prompt": "帮我看看这个高防域名最近有没有异常，顺便把策略、攻击和流量情况都过一遍。",
      "expected_output": "Should route to a full host health check workflow, ask for host if missing, default to a recent inspection window, and summarize policy, attack, and traffic findings in a structured way.",
      "files": [],
      "assertions": [
        "If host is missing, ask for the protected host before continuing.",
        "Default to a recent inspection window when no explicit time range is provided.",
        "Organize the answer as a structured inspection summary instead of dumping raw payloads.",
        "Distinguish missing or failed data collection from a clean health conclusion."
      ]
    },
    {
      "id": 2,
      "prompt": "查下这个 host 最近有没有被打，重点看下来源 IP 和来源地区。",
      "expected_output": "Should route to the attack-investigation workflow, collect host and time window if needed, default to the last 1 hour when missing, and focus on attack events plus top source IP and area.",
      "files": [],
      "assertions": [
        "Route this request to the attack-investigation workflow rather than the full healthcheck when the user is already specific.",
        "Default to the last 1 hour if the user does not provide a time range.",
        "Treat attack-source interfaces as single-InstanceIp queries that require per-instance aggregation when multiple instance IPs exist.",
        "Focus the answer on attack observations, source IPs, and source areas."
      ]
    },
    {
      "id": 3,
      "prompt": "帮我看下这个域名的 CC 规则、WAF 黑白名单和区域封禁配置。",
      "expected_output": "Should route to the policy-review workflow and summarize protection switches, CC rules, allowlist, blocklist, and region-ban status without attempting any write operation.",
      "files": [],
      "assertions": [
        "Route this request to policy review.",
        "Summarize CC rules, WAF allowlist, WAF blocklist, and region-ban status.",
        "Keep the workflow read-only."
      ]
    },
    {
      "id": 4,
      "prompt": "这个高防域名好像有点不对劲，你帮我先整体看看。",
      "expected_output": "Should treat this as a vague host-inspection request, ask for the protected host if it is missing, and default to the full host health check workflow rather than jumping into a narrow sub-flow.",
      "files": [],
      "assertions": [
        "Treat a vague host-inspection request as a full inspection by default.",
        "Ask for the protected host when it is missing.",
        "Do not prematurely narrow into only policy, only attack, or only traffic analysis."
      ]
    },
    {
      "id": 5,
      "prompt": "帮我排查下 AntiDDoSPro 域名，昨天晚上 8 点到 10 点 QPS 为什么掉了。",
      "expected_output": "Should identify this as a traffic-analysis request, ask for the protected host if it is missing, respect the explicit time window, and focus on QPS, BPS, response codes, and related anomalies.",
      "files": [],
      "assertions": [
        "Treat this as traffic analysis rather than generic inspection.",
        "Respect the explicit time window provided by the user.",
        "Focus on QPS, BPS, response-code, and related traffic anomalies."
      ]
    },
    {
      "id": 6,
      "prompt": "这个域名对应的高防实例 IP 是多少？",
      "expected_output": "Should route to the host-to-instance-IP resolution workflow, ask for the host if missing, and return the resolved instance IPs while explaining that four-layer APIs depend on this mapping.",
      "files": [],
      "assertions": [
        "Route to host-to-instance-IP resolution.",
        "Ask for the host when it is missing.",
        "Explain that some four-layer observations depend on resolving instance IPs first."
      ]
    },
    {
      "id": 7,
      "prompt": "帮我给这个域名加一个 WAF 白名单，放行 192.0.2.4。",
      "expected_output": "Should recognize that this is a configuration-change request outside the skill boundary, clearly refuse to perform the write action, and explain that the skill is read-only rather than pretending to handle it.",
      "files": [],
      "assertions": [
        "Recognize that this is a write request outside the skill boundary.",
        "Refuse to perform the change.",
        "Explain that the skill is read-only."
      ]
    },
    {
      "id": 8,
      "prompt": "把这个域名的区域封禁改成只封海外。",
      "expected_output": "Should identify this as a policy-modification request that the skill must not execute, and explain that the skill only supports inspection, analysis, and troubleshooting.",
      "files": [],
      "assertions": [
        "Recognize that this is a policy modification request.",
        "Do not execute the change.",
        "Explain that the skill only supports inspection, analysis, and troubleshooting."
      ]
    },
    {
      "id": 9,
      "prompt": "帮我写一个 AntiDDoSPro 接口的 Python SDK，最好把签名和所有接口都封装一下。",
      "expected_output": "Should not treat this as a host-operations task. It should avoid routing into the inspection workflow and instead recognize this as a development request outside the intended trigger scope of the skill.",
      "files": [],
      "assertions": [
        "Do not route this into host inspection or policy review.",
        "Recognize that this is a development task outside the intended trigger scope."
      ]
    },
    {
      "id": 10,
      "prompt": "看下我这台 Linux 机器这两个小时网络流量是不是异常。",
      "expected_output": "Should not trigger the AntiDDoSPro host-operations workflow because this is a machine-level troubleshooting request rather than a protected-domain inspection task.",
      "files": [],
      "assertions": [
        "Do not trigger the AntiDDoSPro host-operations workflow for machine-level troubleshooting."
      ]
    },
    {
      "id": 11,
      "prompt": "查下 example.com 最近有没有被打，没特别要求的话就按默认时间看。",
      "expected_output": "Should route to attack investigation, use the provided host directly, default to the last 1 hour because no explicit window was given, and focus on attack observations rather than the full healthcheck if the request is already specific.",
      "files": [],
      "assertions": [
        "Use the provided host directly without re-asking for it.",
        "Default to the last 1 hour when no explicit time range is given.",
        "Focus on attack observations rather than full healthcheck output."
      ]
    },
    {
      "id": 12,
      "prompt": "帮我看看 example.com 的高防配置和流量有没有异常，如果有问题告诉我下一步查什么。",
      "expected_output": "Should route to the full host health check workflow using the provided host, organize the answer in the skill's operations-report structure, and include next-step suggestions when anomalies or data gaps exist.",
      "files": [],
      "assertions": [
        "Use the provided host directly.",
        "Route to the full host health check workflow.",
        "Include next-step suggestions when anomalies or data gaps exist."
      ]
    },
    {
      "id": 13,
      "prompt": "帮我核对 example.com 的智能防护是不是开着；如果 `GetHostDefStatus` 里的 `SmartEnable=false`，但 `DescSmartCCConf` 显示开启了，要按哪个结果判断？",
      "expected_output": "Should treat this as a policy-review task for a protected host, explicitly state that smart protection status must be determined from DescSmartCCConf rather than GetHostDefStatus.SmartEnable, and conclude that the feature is enabled when DescSmartCCConf indicates it is on.",
      "files": [],
      "assertions": [
        "State that smart protection status must be determined from DescSmartCCConf.",
        "State that GetHostDefStatus.SmartEnable is not the source of truth for this conclusion.",
        "Conclude that smart protection is enabled when DescSmartCCConf indicates it is enabled.",
        "Identify DescSmartCCConf as using parameter Domain rather than Host."
      ]
    },
    {
      "id": 14,
      "prompt": "帮我看下 example.com 的 AI 防护状态，再查查最近有没有 CCAI 事件和可用的处置建议。",
      "expected_output": "Should trigger this skill for a protected-domain inspection task, use the smart-protection check plus the CCAI read-only APIs, and summarize AI defense status, recent CCAI events, and available recommendations without attempting any write operation.",
      "files": [],
      "assertions": [
        "Treat this as a protected-domain inspection request that should trigger the skill.",
        "Use CCAI read-only capabilities for assets, events, and recommendations.",
        "Keep the workflow read-only.",
        "Summarize AI defense status, recent events, and available recommendations."
      ]
    },
    {
      "id": 15,
      "prompt": "查下 example.com 最近的 DDoS 攻击来源，重点看来源 IP 和来源地区；如果这个域名挂了多个实例 IP，不要把攻击源 GET 接口当成支持 InstanceIps 批量查询。",
      "expected_output": "Should resolve instance IPs first, use the correct request shape for DescribeAttackEvent on the multi-instance path, and treat DescribeTopAttackSrcIp and DescribeTopAttackSrcArea as single-InstanceIp queries that need per-instance aggregation instead of sending InstanceIps directly.",
      "files": [],
      "assertions": [
        "Resolve instance IPs before querying four-layer attack source details.",
        "Use the public contract for DescribeAttackEvent rather than inferring it from a similar legacy shape.",
        "Prefer DescribeAttackEvent version 2023-03-08 with request body InstanceIps[], BeginTime, EndTime, CurrPage, and PageSize when the multi-instance path is needed.",
        "Treat DescribeTopAttackSrcIp and DescribeTopAttackSrcArea as single-InstanceIp queries.",
        "Aggregate per-instance attack-source results instead of sending InstanceIps directly to those GET actions."
      ]
    },
    {
      "id": 16,
      "prompt": "查下 example.com 最近 1 小时的业务流量和连接数；注意别把相近但错误的接口名当成对外 Action。",
      "expected_output": "Should treat this as traffic analysis for a protected host, resolve instance IPs if needed, and use the correct contract for the business-flow API.",
      "files": [],
      "assertions": [
        "Route this request to traffic analysis.",
        "Use the correct interface name for DescribeBizFlowAndConnCount.",
        "Prefer version 2023-03-08 with request body InstanceIps[], BeginTime, and EndTime for the business-flow and connection-count query.",
        "Summarize business flow and connection-count findings instead of dumping raw payloads."
      ]
    }
  ]
}

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# -*- coding: utf-8 -*-
"""Reusable AntiDDoSPro client and helper entrypoints for the byted-antiddospro-hostops skill."""

import datetime
import hashlib
import hmac
import json
import os
import time
from typing import Any, Dict, List, Optional, Tuple
from urllib.parse import quote

import requests


SERVICE = "advdefence"
REGION = "cn-beijing"
HOST = "open.volcengineapi.com"
ENDPOINT = f"https://{HOST}"


ACTION_META = {
    "GetHostDefStatus": ("2021-06-15", "GET"),
    "DescSmartCCConf": ("2021-06-15", "GET"),
    "DescWebDefCcRule": ("2021-06-15", "GET"),
    "GetWafAllowList": ("2021-06-15", "GET"),
    "GetWafBlockList": ("2021-06-15", "GET"),
    "DescWebDefBanRegion": ("2021-06-15", "GET"),
    "DescribeAttackEvent": ("2023-03-08", "POST"),
    "ExportAttackEvents": ("2021-06-15", "POST"),
    "DescribeEvent": ("2021-06-15", "POST"),
    "DescribeTopAttackSrcIp": ("2021-06-15", "GET"),
    "DescribeTopAttackSrcArea": ("2021-06-15", "GET"),
    "DescribeTopAttackSrcInfo": ("2021-06-15", "GET"),
    "DescribeAttackDistribution": ("2021-06-15", "GET"),
    "DescWebAtkOverview": ("2021-06-15", "POST"),
    "DescWebAtkTopSrcIp": ("2021-06-15", "POST"),
    "DescWebAtkTopUrl": ("2021-06-15", "POST"),
    "DescribeAttackFlow": ("2021-06-15", "POST"),
    "DescribeBizFlowAndConnCount": ("2023-03-08", "POST"),
    "DescWebBpsFlow": ("2021-06-15", "POST"),
    "DescWebQpsFlow": ("2021-06-15", "POST"),
    "DescWebRespCode": ("2021-06-15", "POST"),
    "DescWebAtkStatistics": ("2021-06-15", "POST"),
    "DescWebDisplayPhase": ("2021-06-15", "GET"),
    "DescHostRules": ("2021-06-15", "GET"),
    "ListAssets": ("2021-06-15", "POST"),
    "ListEvents": ("2021-06-15", "POST"),
    "ListRecommendations": ("2021-06-15", "POST"),
    "DescribeRecommendation": ("2021-06-15", "POST"),
}


_HEADER_KEY_MAP = {
    "host": "Host",
    "x-content-sha256": "X-Content-Sha256",
    "x-date": "X-Date",
    "content-type": "Content-Type",
}


def _sha256_hex(data: bytes) -> str:
    return hashlib.sha256(data).hexdigest()


def _hmac_sha256(key: bytes, msg: str) -> bytes:
    return hmac.new(key, msg.encode("utf-8"), hashlib.sha256).digest()


def _signing_key(secret_key: str, date_stamp: str, region: str, service: str) -> bytes:
    k_date = _hmac_sha256(secret_key.encode("utf-8"), date_stamp)
    k_region = _hmac_sha256(k_date, region)
    k_service = _hmac_sha256(k_region, service)
    return _hmac_sha256(k_service, "request")


def _canonical_query(params: Dict[str, Any]) -> str:
    items = []
    for key in sorted(params.keys()):
        value = params[key]
        if value is None:
            continue
        if isinstance(value, (list, tuple)):
            value = ",".join(str(item) for item in value)
        items.append((quote(str(key), safe="-_.~"), quote(str(value), safe="-_.~")))
    return "&".join(f"{key}={value}" for key, value in items)


def call_antiddospro(
    action: str,
    version: str,
    body: Optional[Dict[str, Any]],
    access_key: str,
    secret_key: str,
    region: str = REGION,
    service: str = SERVICE,
    host: str = HOST,
    method: str = "POST",
    timeout: int = 15,
) -> Tuple[int, Dict[str, Any]]:
    query: Dict[str, Any] = {"Action": action, "Version": version}

    if method == "GET":
        if body:
            query.update(body)
        body_bytes = b""
        content_type = "application/x-www-form-urlencoded"
    else:
        body_bytes = json.dumps(body or {}, separators=(",", ":")).encode("utf-8")
        content_type = "application/json"

    now = datetime.datetime.now(datetime.timezone.utc)
    x_date = now.strftime("%Y%m%dT%H%M%SZ")
    date_stamp = now.strftime("%Y%m%d")
    body_hash = _sha256_hex(body_bytes)

    headers = {
        "Host": host,
        "X-Content-Sha256": body_hash,
        "X-Date": x_date,
        "Content-Type": content_type,
    }
    signed_list = ["content-type", "host", "x-content-sha256", "x-date"]
    canonical_headers = "".join(f"{item}:{headers[_HEADER_KEY_MAP[item]]}\n" for item in signed_list)
    signed_headers = ";".join(signed_list)

    canonical_request = "\n".join([
        method,
        "/",
        _canonical_query(query),
        canonical_headers,
        signed_headers,
        body_hash,
    ])
    credential_scope = f"{date_stamp}/{region}/{service}/request"
    string_to_sign = "\n".join([
        "HMAC-SHA256",
        x_date,
        credential_scope,
        _sha256_hex(canonical_request.encode("utf-8")),
    ])
    signing_key = _signing_key(secret_key, date_stamp, region, service)
    signature = hmac.new(signing_key, string_to_sign.encode("utf-8"), hashlib.sha256).hexdigest()
    headers["Authorization"] = (
        f"HMAC-SHA256 Credential={access_key}/{credential_scope}, "
        f"SignedHeaders={signed_headers}, Signature={signature}"
    )

    url = f"https://{host}/?{_canonical_query(query)}"
    if method == "GET":
        response = requests.get(url, headers=headers, timeout=timeout)
    else:
        response = requests.post(url, headers=headers, data=body_bytes, timeout=timeout)

    try:
        return response.status_code, response.json()
    except ValueError:
        return response.status_code, {"raw": response.text}


class _BaseAntiDDoSProClient:
    def __init__(self, access_key: str, secret_key: str):
        self.ak = access_key
        self.sk = secret_key

    def _call(self, action: str, body: Optional[Dict[str, Any]] = None):
        version, method = ACTION_META[action]
        return call_antiddospro(action, version, body, self.ak, self.sk, method=method)

    def desc_host_rules(
        self,
        host: Optional[str] = None,
        hosts: Optional[List[str]] = None,
        instance_ip: Optional[str] = None,
        instance_ips: Optional[List[str]] = None,
        demension: int = 1,
        accurate: int = 1,
        curr_page: int = 1,
        page_size: int = 20,
    ):
        body = {"Demension": demension, "Accurate": accurate, "CurrPage": curr_page, "PageSize": page_size}
        if host is not None:
            body["Host"] = host
        if hosts is not None:
            body["Hosts"] = hosts
        if instance_ip is not None:
            body["InstanceIp"] = instance_ip
        if instance_ips is not None:
            body["InstanceIps"] = instance_ips
        return self._call("DescHostRules", body)

    def resolve_instance_ips(self, host: str) -> List[str]:
        status, response = self.desc_host_rules(host=host, demension=1, accurate=1)
        if status != 200:
            raise RuntimeError(f"DescHostRules HTTP {status}: {response}")
        rules = (response.get("Result") or {}).get("RuleList") or []
        if not rules:
            raise RuntimeError(f"域名 {host} 未接入或不存在（请检查 Demension 是否传 1）")
        instance_ips: List[str] = []
        seen = set()
        for rule in rules:
            for instance_ip in rule.get("DefIp") or []:
                if instance_ip and instance_ip not in seen:
                    seen.add(instance_ip)
                    instance_ips.append(instance_ip)
        if not instance_ips:
            raise RuntimeError(f"域名 {host} 没有关联的高防实例 IP")
        return instance_ips


class HostPolicyClient(_BaseAntiDDoSProClient):
    def get_host_def_status(self, host: str):
        return self._call("GetHostDefStatus", {"Host": host})

    def desc_smart_cc_conf(self, domain: str):
        return self._call("DescSmartCCConf", {"Domain": domain})

    def desc_web_def_cc_rule(
        self,
        host: str,
        cc_rule_name: Optional[str] = None,
        cc_rule_tag: Optional[str] = None,
        curr_page: int = 1,
        page_size: int = 20,
    ):
        body = {"Host": host, "CurrPage": curr_page, "PageSize": page_size}
        if cc_rule_name is not None:
            body["CCRuleName"] = cc_rule_name
        if cc_rule_tag is not None:
            body["CCRuleTag"] = cc_rule_tag
        return self._call("DescWebDefCcRule", body)

    def get_waf_allow_list(self, host: str, curr_page: int = 1, page_size: int = 20):
        return self._call("GetWafAllowList", {"Host": host, "CurrPage": curr_page, "PageSize": page_size})

    def get_waf_block_list(self, host: str, curr_page: int = 1, page_size: int = 20):
        return self._call("GetWafBlockList", {"Host": host, "CurrPage": curr_page, "PageSize": page_size})

    def desc_web_def_ban_region(self, host: str):
        return self._call("DescWebDefBanRegion", {"Host": host})

    def overview(self, host: str) -> Dict[str, Any]:
        output: Dict[str, Any] = {"Host": host}
        _safe_collect(output, "DefSwitch", self.get_host_def_status, host)
        _safe_collect(output, "SmartCCConf", self.desc_smart_cc_conf, host)
        _safe_collect(output, "CCRules", self.desc_web_def_cc_rule, host)
        _safe_collect(output, "WafAllowList", self.get_waf_allow_list, host)
        _safe_collect(output, "WafBlockList", self.get_waf_block_list, host)
        _safe_collect(output, "WebDefBanRegion", self.desc_web_def_ban_region, host)
        return output


class AttackEventClient(_BaseAntiDDoSProClient):
    def describe_attack_event(self, begin_time: int, end_time: int, instance_ips: List[str], curr_page: int = 1, page_size: int = 20):
        return self._call("DescribeAttackEvent", {
            "BeginTime": begin_time,
            "EndTime": end_time,
            "InstanceIps": instance_ips,
            "CurrPage": curr_page,
            "PageSize": page_size,
        })

    def describe_top_attack_src_ip(self, begin_time: int, end_time: int, instance_ip: str, curr_page: int = 1, page_size: int = 20, time_zone: str = ""):
        body = {"BeginTime": begin_time, "EndTime": end_time, "InstanceIp": instance_ip, "CurrPage": curr_page, "PageSize": page_size}
        if time_zone:
            body["TimeZone"] = time_zone
        return self._call("DescribeTopAttackSrcIp", body)

    def describe_top_attack_src_area(self, begin_time: int, end_time: int, instance_ip: str, curr_page: int = 1, page_size: int = 20, time_zone: str = ""):
        body = {"BeginTime": begin_time, "EndTime": end_time, "InstanceIp": instance_ip, "CurrPage": curr_page, "PageSize": page_size}
        if time_zone:
            body["TimeZone"] = time_zone
        return self._call("DescribeTopAttackSrcArea", body)

    def describe_top_attack_src_info(self, begin_time: int, end_time: int, instance_ip: str, curr_page: int = 1, page_size: int = 20, time_zone: str = ""):
        body = {"BeginTime": begin_time, "EndTime": end_time, "InstanceIp": instance_ip, "CurrPage": curr_page, "PageSize": page_size}
        if time_zone:
            body["TimeZone"] = time_zone
        return self._call("DescribeTopAttackSrcInfo", body)

    def describe_attack_distribution(self, begin_time: int, end_time: int, instance_ip: str, curr_page: int = 1, page_size: int = 20, time_zone: str = ""):
        body = {"BeginTime": begin_time, "EndTime": end_time, "InstanceIp": instance_ip, "CurrPage": curr_page, "PageSize": page_size}
        if time_zone:
            body["TimeZone"] = time_zone
        return self._call("DescribeAttackDistribution", body)

    def desc_web_atk_overview(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebAtkOverview", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def desc_web_atk_top_src_ip(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebAtkTopSrcIp", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def desc_web_atk_top_url(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebAtkTopUrl", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def _collect_per_instance(self, fn, begin_time: int, end_time: int, instance_ips: List[str]) -> Dict[str, Any]:
        output: Dict[str, Any] = {}
        for instance_ip in instance_ips:
            try:
                status, response = fn(begin_time, end_time, instance_ip)
                metadata = response.get("ResponseMetadata") or {}
                if status != 200:
                    output[instance_ip] = {"http_status": status, "error": response}
                elif metadata.get("Error"):
                    output[instance_ip] = {"http_status": status, "error": metadata["Error"]}
                else:
                    output[instance_ip] = response.get("Result")
            except Exception as exc:
                output[instance_ip] = {"error": str(exc)}
        return output

    def overview(self, host: str, begin_time: int, end_time: int) -> Dict[str, Any]:
        output: Dict[str, Any] = {"Host": host, "BeginTime": begin_time, "EndTime": end_time}
        try:
            instance_ips = self.resolve_instance_ips(host)
            output["InstanceIps"] = instance_ips
        except Exception as exc:
            output["InstanceIps"] = {"error": str(exc)}
            instance_ips = []

        _safe_collect(output, "WebAtkOverview", self.desc_web_atk_overview, [host], begin_time, end_time)
        _safe_collect(output, "WebAtkTopSrcIp", self.desc_web_atk_top_src_ip, [host], begin_time, end_time)
        _safe_collect(output, "WebAtkTopUrl", self.desc_web_atk_top_url, [host], begin_time, end_time)

        if instance_ips:
            _safe_collect(output, "DDoSAttackEvent", self.describe_attack_event, begin_time, end_time, instance_ips)
            output["TopAttackSrcIp"] = self._collect_per_instance(self.describe_top_attack_src_ip, begin_time, end_time, instance_ips)
            output["TopAttackSrcArea"] = self._collect_per_instance(self.describe_top_attack_src_area, begin_time, end_time, instance_ips)
            output["AttackDistribution"] = self._collect_per_instance(self.describe_attack_distribution, begin_time, end_time, instance_ips)

        return output


class CCAIClient(_BaseAntiDDoSProClient):
    def list_assets(self, domain: str, ai_defense_status: Optional[str] = None):
        body = {"Domain": domain}
        if ai_defense_status is not None:
            body["AiDefenseStatus"] = ai_defense_status
        return self._call("ListAssets", body)

    def list_events(
        self,
        domain: str,
        start_time: Optional[str] = None,
        end_time: Optional[str] = None,
        status: Optional[str] = None,
        page_number: int = 1,
        page_size: int = 20,
    ):
        body: Dict[str, Any] = {"Domain": domain, "PageNumber": page_number, "PageSize": page_size}
        if start_time is not None:
            body["StartTime"] = start_time
        if end_time is not None:
            body["EndTime"] = end_time
        if status is not None:
            body["Status"] = status
        return self._call("ListEvents", body)

    def list_recommendations(
        self,
        domain: str,
        start_time: Optional[str] = None,
        end_time: Optional[str] = None,
        status: Optional[str] = None,
        page_number: int = 1,
        page_size: int = 20,
    ):
        body: Dict[str, Any] = {"Domain": domain, "PageNumber": page_number, "PageSize": page_size}
        if start_time is not None:
            body["StartTime"] = start_time
        if end_time is not None:
            body["EndTime"] = end_time
        if status is not None:
            body["Status"] = status
        return self._call("ListRecommendations", body)

    def describe_event(self, event_id: str):
        return self._call("DescribeEvent", {"EventId": event_id})

    def describe_recommendation(self, recommendation_id: str):
        return self._call("DescribeRecommendation", {"RecommendationId": recommendation_id})

    def overview(self, domain: str) -> Dict[str, Any]:
        output: Dict[str, Any] = {"Domain": domain}
        _safe_collect(output, "Assets", self.list_assets, domain)
        _safe_collect(output, "Events", self.list_events, domain)
        _safe_collect(output, "Recommendations", self.list_recommendations, domain)
        return output


class FlowTrafficClient(_BaseAntiDDoSProClient):
    def describe_attack_flow(self, instance_ips: List[str], begin_time: int, end_time: int, tab: str = "Peak"):
        return self._call("DescribeAttackFlow", {"InstanceIps": instance_ips, "BeginTime": begin_time, "EndTime": end_time, "Tab": tab})

    def describe_biz_flow_and_conn_count(self, instance_ips: List[str], begin_time: int, end_time: int):
        return self._call("DescribeBizFlowAndConnCount", {"InstanceIps": instance_ips, "BeginTime": begin_time, "EndTime": end_time})

    def desc_web_bps_flow(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebBpsFlow", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def desc_web_qps_flow(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebQpsFlow", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def desc_web_resp_code(self, hosts: List[str], begin_time: int, end_time: int, type_: int = 2):
        return self._call("DescWebRespCode", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time, "Type": type_})

    def desc_web_atk_statistics(self, hosts: List[str], begin_time: int, end_time: int):
        return self._call("DescWebAtkStatistics", {"Hosts": hosts, "BeginTime": begin_time, "EndTime": end_time})

    def overview(self, host: str, begin_time: int, end_time: int) -> Dict[str, Any]:
        output: Dict[str, Any] = {"Host": host, "BeginTime": begin_time, "EndTime": end_time}
        try:
            instance_ips = self.resolve_instance_ips(host)
            output["InstanceIps"] = instance_ips
        except Exception as exc:
            output["InstanceIps"] = {"error": str(exc)}
            instance_ips = []

        _safe_collect(output, "WebBpsFlow", self.desc_web_bps_flow, [host], begin_time, end_time)
        _safe_collect(output, "WebQpsFlow", self.desc_web_qps_flow, [host], begin_time, end_time)
        _safe_collect(output, "WebRespCode", self.desc_web_resp_code, [host], begin_time, end_time)
        _safe_collect(output, "WebAtkStatistics", self.desc_web_atk_statistics, [host], begin_time, end_time)

        if instance_ips:
            _safe_collect(output, "AttackFlowPeak", self.describe_attack_flow, instance_ips, begin_time, end_time, "Peak")
            _safe_collect(output, "BizFlowAndConnCount", self.describe_biz_flow_and_conn_count, instance_ips, begin_time, end_time)

        return output


def _safe_collect(output: Dict[str, Any], key: str, fn, *args, **kwargs) -> None:
    try:
        status, response = fn(*args, **kwargs)
        metadata = response.get("ResponseMetadata") or {}
        request_id = metadata.get("RequestId")
        if status != 200:
            output[key] = {"http_status": status, "error": response, "request_id": request_id}
        elif metadata.get("Error"):
            output[key] = {"http_status": status, "error": metadata["Error"], "request_id": request_id}
        else:
            output[key] = response.get("Result")
    except Exception as exc:
        output[key] = {"error": str(exc)}


def _get_credentials() -> Tuple[str, str]:
    resolved_ak = os.environ.get("VOLC_ACCESS_KEY")
    resolved_sk = os.environ.get("VOLC_SECRET_KEY")
    if not resolved_ak or not resolved_sk:
        raise RuntimeError(
            "缺少凭证：请通过环境变量 VOLC_ACCESS_KEY / VOLC_SECRET_KEY 注入火山引擎凭证。"
        )
    return resolved_ak, resolved_sk


def _wrap(fn, *args, **kwargs) -> Dict[str, Any]:
    try:
        return {"ok": True, "data": fn(*args, **kwargs)}
    except Exception as exc:
        return {"ok": False, "error": str(exc), "type": type(exc).__name__}


def query_antiddospro_policy_overview(host: str) -> Dict[str, Any]:
    """Query read-only AntiDDoSPro policy status for a protected host."""

    def run() -> Dict[str, Any]:
        access_key, secret_key = _get_credentials()
        return HostPolicyClient(access_key, secret_key).overview(host)

    return _wrap(run)


def query_antiddospro_attack_events(
    host: str,
    begin_time: Optional[int] = None,
    end_time: Optional[int] = None,
    lookback_seconds: int = 3600,
) -> Dict[str, Any]:
    """Query recent AntiDDoSPro attack observations for a protected host."""

    def run() -> Dict[str, Any]:
        access_key, secret_key = _get_credentials()
        end_ts = end_time if end_time is not None else int(time.time())
        begin_ts = begin_time if begin_time is not None else end_ts - lookback_seconds
        return AttackEventClient(access_key, secret_key).overview(host, begin_ts, end_ts)

    return _wrap(run)


def query_antiddospro_flow_traffic(
    host: str,
    begin_time: Optional[int] = None,
    end_time: Optional[int] = None,
    lookback_seconds: int = 3600,
) -> Dict[str, Any]:
    """Query AntiDDoSPro traffic, response-code, and connection observations."""

    def run() -> Dict[str, Any]:
        access_key, secret_key = _get_credentials()
        end_ts = end_time if end_time is not None else int(time.time())
        begin_ts = begin_time if begin_time is not None else end_ts - lookback_seconds
        return FlowTrafficClient(access_key, secret_key).overview(host, begin_ts, end_ts)

    return _wrap(run)


def resolve_antiddospro_instance_ips(host: str) -> Dict[str, Any]:
    """Resolve a protected host to its associated AntiDDoSPro instance IPs."""

    def run() -> List[str]:
        access_key, secret_key = _get_credentials()
        return HostPolicyClient(access_key, secret_key).resolve_instance_ips(host)

    return _wrap(run)


def query_antiddospro_ccai_overview(host: str) -> Dict[str, Any]:
    """Query read-only CCAI asset, event, and recommendation status."""

    def run() -> Dict[str, Any]:
        access_key, secret_key = _get_credentials()
        return CCAIClient(access_key, secret_key).overview(host)

    return _wrap(run)


def query_antiddospro_host_healthcheck(
    host: str,
    begin_time: Optional[int] = None,
    end_time: Optional[int] = None,
    lookback_seconds: int = 3600,
) -> Dict[str, Any]:
    """Run a read-only AntiDDoSPro host health check across policy, events, traffic, and CCAI."""

    def run() -> Dict[str, Any]:
        access_key, secret_key = _get_credentials()
        end_ts = end_time if end_time is not None else int(time.time())
        begin_ts = begin_time if begin_time is not None else end_ts - lookback_seconds
        policy = HostPolicyClient(access_key, secret_key).overview(host)
        events = AttackEventClient(access_key, secret_key).overview(host, begin_ts, end_ts)
        traffic = FlowTrafficClient(access_key, secret_key).overview(host, begin_ts, end_ts)
        ccai = CCAIClient(access_key, secret_key).overview(host)
        return {
            "Host": host,
            "Window": {"BeginTime": begin_ts, "EndTime": end_ts},
            "Policy": policy,
            "Events": events,
            "Traffic": traffic,
            "CCAI": ccai,
        }

    return _wrap(run)