拆分抓取与交易服务
把需要账号登录态的链路从抓取服务里拆出成独立进程。分界线不是「要不要登录」, 而是抓取无状态、幂等、可多开实例,而交易的写操作不可逆、登录态全局唯一、 订单监控是常驻轮询——同进程时抓取一扩容就会复制出 N 份登录态与 N 个轮询, 同一账号会被并发操作。 - app/shared:配置、错误码、日志、ApiResponse 信封 + Bearer 鉴权 + 异常处理器、 导航请求头构造器 - app/scraping:站点常量、会话、解析器与 10 个抓取接口,:31107,可多开 - app/trading:登录态查询/重载与健康检查,:31108,只能单实例 - 依赖方向锁为 scraping→shared、trading→shared,两侧互不 import; tests/test_architecture.py 用 AST 检查 import 并校验两个 app 的路径不串 - 登录态 UA 在 trading 独立持有:与抓取 UA 值相同但变更理由不同,抓取 UA 为绕 反爬可随时调整,登录 UA 一改可能触发设备校验使已落盘 cookie 失效 - scripts/login.py 与 AuthSession 共用 auth_site.PROFILES 与 is_logged_in,判据只写一遍 - 同一镜像两个启动命令,交易容器覆盖 command 并设 RAKUTEN_HEALTH_PORT 同时带上此前未提交的 ラクマ 分类接口与登录态基础设施。 验证:239 个离线用例全绿;两个入口真实启动,/health 与鉴权正常。 未验证:真实探测登录态(当前开发机无外网,对站点的连接全部超时)。 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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"""ビックカメラ楽天市場店(biccamera.rakuten.co.jp)商品页解析
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Nuxt 应用,整页数据内联在 `window.__NUXT__`(纯 JSON 对象,可直接增量解析)。
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商品主体在 `state.item`,字段命名已经很接近市场侧语义,且直接给出市场的
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shop_id / genre_id / 分类路径与库存数。
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站点不提供:SKU 组合(该店商品都是单一规格)、商品评分(异步加载)。
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"""
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from __future__ import annotations
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import json
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import re
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from app.shared.errors import ScrapeParseError
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from app.scraping.models.scrape import (
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Breadcrumb,
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ItemDetailData,
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PurchaseInfo,
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ShippingInfo,
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ShopSummary,
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SkuInfo,
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)
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from app.scraping.parsers.subsites.base import SubsitePage
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from app.scraping.utils.coerce import as_dict, as_int, as_list, as_str
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HOST = "biccamera.rakuten.co.jp"
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SOURCE = "biccamera"
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SHOP_NAME = "ビックカメラ楽天市場店"
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_NUXT_RE = re.compile(r"window\.__NUXT__\s*=\s*")
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_CATEGORY_URL = "https://www.rakuten.co.jp/category/{}/"
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def validate(html: str) -> str | None:
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if _NUXT_RE.search(html):
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return None
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return f"biccamera nuxt state not found (body {len(html)} bytes)"
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def _extract_nuxt(html: str) -> dict:
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match = _NUXT_RE.search(html)
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if match is None:
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raise ScrapeParseError("ビックカメラ页面未找到 window.__NUXT__")
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try:
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state, _ = json.JSONDecoder().raw_decode(html, match.end())
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except ValueError as exc:
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raise ScrapeParseError(f"window.__NUXT__ 解析失败:{exc}") from exc
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if not isinstance(state, dict):
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raise ScrapeParseError("window.__NUXT__ 不是 JSON 对象")
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return state
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def _purchase_info(state: dict, item: dict) -> PurchaseInfo:
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"""该站加购走自己的 JSON 接口,字段与市场完全不同(没有 shop_bid)
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选项(choices)的取值结构未取到样本验证,因此只如实回报「有没有选项」,
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不给出可能不准确的选项定义——带选项的商品需要调用方另行处理。
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"""
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choices = as_list(state.get("choices"))
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return PurchaseInfo(
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cart_url=as_str(item.get("add_cart_api_url")),
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form_fields={"item_id": str(as_int(item.get("item_id")))},
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quantity_field="units",
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options_field="choice" if choices else "",
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has_required_options=bool(choices),
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)
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def parse(page: SubsitePage) -> ItemDetailData:
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"""解析ビックカメラ商品页"""
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nuxt = _extract_nuxt(page.html)
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item = as_dict(as_dict(nuxt.get("state")).get("item"))
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if not item or not as_str(item.get("item_name")):
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raise ScrapeParseError("ビックカメラ页面缺少 state.item")
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sold_out = bool(item.get("sold_out_flag"))
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inventory = as_int(item.get("inventory"))
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delivery = as_str(item.get("delivery_schedule_text"))
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breadcrumbs = [
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Breadcrumb(
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name=as_str(genre.get("genre_name")),
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url=_CATEGORY_URL.format(as_str(genre.get("genre_id"))),
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)
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for genre in as_list(item.get("genres"))
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if isinstance(genre, dict) and as_str(genre.get("genre_name"))
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]
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images = [
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as_str(image.get("url"))
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for image in as_list(item.get("images"))
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if isinstance(image, dict) and as_str(image.get("url"))
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]
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shop_code = as_str(item.get("shop_url")) or page.shop_code
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return ItemDetailData(
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source=SOURCE,
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source_url=page.final_url,
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item_id=str(as_int(item.get("item_id"))) if item.get("item_id") is not None else "",
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item_code=as_str(item.get("item_number")) or page.item_code,
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item_name=as_str(item.get("item_name")),
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catch_copy=as_str(item.get("catch_copy")),
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description=as_str(item.get("caption")),
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item_url=page.requested_url,
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price=as_int(item.get("price_with_tax")),
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pre_tax_price=as_int(item.get("original_price")),
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tax_flag=bool(item.get("included_tax_flag")),
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purchase_condition="soldOut" if sold_out else "enabled",
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is_sold_out=sold_out,
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purchase_unit=as_int(item.get("units")),
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images=images,
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shop=ShopSummary(
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shop_id=as_int(item.get("shop_id")) or None,
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shop_code=shop_code,
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shop_name=SHOP_NAME,
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shop_url=f"https://www.rakuten.co.jp/{shop_code}/",
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),
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genre_id=str(as_int(item.get("genre_id"))) if item.get("genre_id") is not None else "",
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breadcrumbs=breadcrumbs,
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shipping=ShippingInfo(
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# 该店商品价格含运费时站点会置位此标记,不再单独给运费金额
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is_shipping_free=bool(item.get("included_shipping_fee_flag")),
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delivery_message=delivery,
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),
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sku=SkuInfo(
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inventory_type="single",
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quantity=inventory,
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show_inventory=inventory > 0,
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delivery_message=delivery,
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),
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purchase=_purchase_info(as_dict(nuxt.get("state")), item),
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)
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