feat(ingest): API Push 短新闻接口层
- POST /api/v1/ingest:鉴权(X-Ingest-Token) + 限速(每 token 2 篇/秒,
Redis 滑动桶,INGEST_RATE_PER_SEC 可调) + 三层去重(L1 external_id /
L2 content_hash / L3 DB UNIQUE 兜底,均带 reason)
- 写入字段:is_short_news=True、translation/format/image_ai_status='n/a'、
classify_status=(有 tags?'ok':'pending')、commentary_{angel,meituan}_status='pending'、
body_zh_text=body_text(走统一路径,前端/prompt 不用改)
- services/fetchers/api_push.py:compute_content_hash + synthesize_url +
normalize_published_at + build_initial_status 纯函数
- schemas/ingest.py:IngestPayload(title 1-200/body 1-5000/tags 去重去空) +
IngestResponse(article_id/content_hash/status/reason/matched_external_id)
- admin.py:POST/GET/DELETE /admin/sources/{id}/ingest-tokens — owner 生成
(raw_token 仅一次性返回)、列出、撤销
- schemas/article.py:ArticleListItem 加 is_short_news/source_ref;
ArticleDetail 加 is_short_news/source_ref/external_id
- main.py:挂 ingest router;config.py + .env.example:ingest_rate_per_sec 默认 2
短新闻由 commit 1 enrichment_loop 自动接管 classify + 双 provider commentary,
跳过 format/image。
This commit is contained in:
xiaji
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backend/app/api/ingest.py
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269
backend/app/api/ingest.py
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"""POST /api/v1/ingest — 外部推送短新闻入库。
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鉴权:X-Ingest-Token 头(对应 api_tokens.purpose='ingest' 的 sha256 token)
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限速:每个 token 2 篇/秒(Redis 滑动窗口,可在 .env 调 INGEST_RATE_PER_SEC)
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去重:三层(L1 external_id / L2 content_hash / L3 DB UNIQUE 兜底)
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返回:
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- 201 新建
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- 200 重复(任何一层命中,带 reason)
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- 400 字段缺失/超长
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- 401 token 无效/吊销/过期
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- 413 body 超长(被 pydantic 自动捕获返 400;这里额外兜底)
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- 429 触发限速
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调用方契约见 docs/api-push.md。
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"""
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from __future__ import annotations
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import logging
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import time
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from datetime import datetime, timezone
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from fastapi import APIRouter, Depends, Header, HTTPException, status
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from fastapi.responses import JSONResponse
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from sqlalchemy import select
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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.config import settings
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from app.core.security import hash_api_token
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from app.database import get_session
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from app.models.api_token import TOKEN_PURPOSE_INGEST, ApiToken
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from app.models.article import Article
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from app.models.source import Source
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from app.redis_client import get_redis
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from app.schemas.ingest import IngestPayload, IngestResponse
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from app.services.fetchers.api_push import (
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build_initial_status,
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compute_content_hash,
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normalize_published_at,
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synthesize_url,
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)
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logger = logging.getLogger("news.ingest")
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router = APIRouter(prefix="/ingest", tags=["ingest"])
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# === 限速:Redis 滑动窗口(每个 token 独立计数)===
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# key = f"ingest:rl:{token_id}:{floor(now)}" # 1 秒桶
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# 简单方案:固定窗口(每秒清零)。足够防止刷爆,不会严格滑动。
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async def _rate_limit_check(token_id: int, max_per_sec: int) -> bool:
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"""返回 True=放行,False=限速命中。"""
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r = get_redis()
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now = int(time.time())
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key = f"ingest:rl:{token_id}:{now}"
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pipe = r.pipeline()
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pipe.incr(key, 1)
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pipe.expire(key, 2) # key 2 秒后过期,自然清零
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results = await pipe.execute()
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count = results[0]
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return int(count) <= max_per_sec
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# === 鉴权 + 反查 source ===
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async def _resolve_ingest_token(
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session: AsyncSession,
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raw_token: str,
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) -> ApiToken:
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"""验证 token + 反查 api_tokens 行,要求 purpose='ingest' + 未撤销 + 未过期。
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返回 ApiToken(含 source_id)。
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"""
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h = hash_api_token(raw_token)
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result = await session.execute(
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select(ApiToken).where(
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ApiToken.token_hash == h,
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ApiToken.purpose == TOKEN_PURPOSE_INGEST,
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ApiToken.revoked_at.is_(None),
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)
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)
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tok = result.scalar_one_or_none()
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if not tok:
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raise HTTPException(status.HTTP_401_UNAUTHORIZED, "invalid ingest token")
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if tok.expires_at and tok.expires_at < datetime.now(timezone.utc):
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raise HTTPException(status.HTTP_401_UNAUTHORIZED, "ingest token expired")
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if tok.source_id is None:
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# 数据完整性:purpose=ingest 必须绑定 source_id
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logger.error("ingest token id=%s missing source_id", tok.id)
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raise HTTPException(status.HTTP_500_INTERNAL_SERVER_ERROR, "token misconfigured")
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return tok
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# === 验证 source 状态 ===
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async def _resolve_source(session: AsyncSession, source_id: int) -> Source:
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src = (
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await session.execute(select(Source).where(Source.id == source_id))
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).scalar_one_or_none()
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if not src:
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raise HTTPException(status.HTTP_404_NOT_FOUND, f"source {source_id} not found")
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if not src.enabled:
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raise HTTPException(status.HTTP_403_FORBIDDEN, f"source {src.slug} disabled")
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if src.kind.value != "api_push":
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# 防呆:token 绑定的 source 必须是 api_push 类型
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raise HTTPException(
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status.HTTP_500_INTERNAL_SERVER_ERROR,
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f"source {src.slug} is not api_push kind",
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)
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return src
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# === 主路由 ===
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@router.post("", response_model=None)
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async def ingest(
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payload: IngestPayload,
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x_ingest_token: str = Header(..., alias="X-Ingest-Token", description="ingest token"),
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session: AsyncSession = Depends(get_session),
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):
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"""接收一条短新闻,落库或返重复。
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- 鉴权:X-Ingest-Token → 反查 token → 拿到 source_id
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- 限速:每个 token 2 篇/秒(可在 .env 调 INGEST_RATE_PER_SEC)
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- 去重:三层(content_hash UNIQUE 是 DB 兜底)
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- 入库后:enrichment_loop 自动跑 classify + 双 provider commentary
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"""
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# 1) 鉴权
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tok = await _resolve_ingest_token(session, x_ingest_token)
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# 2) 验证 source
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src = await _resolve_source(session, tok.source_id)
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# 3) 限速
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if not await _rate_limit_check(tok.id, settings.ingest_rate_per_sec):
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raise HTTPException(
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status.HTTP_429_TOO_MANY_REQUESTS,
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f"rate limit exceeded ({settings.ingest_rate_per_sec}/s per token)",
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headers={"Retry-After": "1"},
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)
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# 4) 算 content_hash
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content_hash = compute_content_hash(
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external_id=payload.external_id,
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title=payload.title,
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body=payload.body,
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)
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# 5) L1:external_id 精确命中
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if payload.external_id:
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result = await session.execute(
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select(Article.id, Article.content_hash).where(
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Article.external_id == payload.external_id,
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Article.source_id == src.id,
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)
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)
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row = result.first()
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if row:
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return JSONResponse(
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status_code=status.HTTP_200_OK,
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content={
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"article_id": row[0],
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"content_hash": row[1],
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"status": "duplicate",
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"reason": "external_id_match",
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"matched_external_id": payload.external_id,
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},
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)
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# 6) L2:content_hash 命中(SELECT 走索引,快)
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result = await session.execute(
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select(Article.id, Article.external_id).where(
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Article.content_hash == content_hash,
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)
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)
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row = result.first()
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if row:
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return JSONResponse(
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status_code=status.HTTP_200_OK,
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content={
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"article_id": row[0],
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"content_hash": content_hash,
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"status": "duplicate",
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"reason": "content_hash_match",
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"matched_external_id": row[1],
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},
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)
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# 7) 入库
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has_tags = bool(payload.tags)
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init_status = build_initial_status(has_tags=has_tags)
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article = Article(
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source_id=src.id,
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is_short_news=True,
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external_id=payload.external_id,
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source_ref=payload.source_ref,
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content_hash=content_hash,
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# url / url_hash:合成占位,保证 NOT NULL + UNIQUE 不冲突
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url=synthesize_url(src.slug, content_hash),
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url_hash=content_hash, # 短新闻无真实 url,用 content_hash 兜底
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title=payload.title[:512], # 留个余量,避免 > 512 报错
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body_text=payload.body[:65535], # 同步 DB 限制
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body_html=None, # API Push 是纯文本
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# 把 body 复制到 body_zh_text,让前端/prompt 走统一路径(短新闻无 translation)
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body_zh_text=payload.body[:65535],
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body_zh_html=None,
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title_zh=None,
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summary_zh=None,
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lang_src="zh",
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author=payload.author,
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image_url=None,
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image_ai_url=None,
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published_at=normalize_published_at(payload.published_at),
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# === enrich 状态字段 ===
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translation_status=init_status["translation_status"],
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format_status=init_status["format_status"],
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image_ai_status=init_status["image_ai_status"],
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classify_status=init_status["classify_status"],
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commentary_status=init_status["commentary_status"],
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commentary_meituan_status=init_status["commentary_meituan_status"],
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# === 内容字段 ===
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# 调用方传了 tags → 直接当 category,省一次 LLM 调用
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category=",".join(payload.tags)[:64] if payload.tags else None,
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)
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session.add(article)
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try:
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await session.commit()
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except IntegrityError:
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# L3 兜底:并发场景下两个请求同时到,都通过 L2 但 DB UNIQUE 拦下
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await session.rollback()
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# 重新查一次,拿已有那条
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result = await session.execute(
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select(Article.id).where(Article.content_hash == content_hash)
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)
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existing_id = result.scalar_one_or_none()
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if existing_id is None:
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# 真出问题了,返 500 让调用方重试
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logger.exception("ingest integrity error but no existing row found")
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raise HTTPException(
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status.HTTP_500_INTERNAL_SERVER_ERROR,
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"ingest conflict, please retry",
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)
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logger.info(
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"ingest db_unique caught: source=%s external_id=%s article_id=%s",
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src.slug, payload.external_id, existing_id,
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)
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return JSONResponse(
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status_code=status.HTTP_200_OK,
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content={
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"article_id": existing_id,
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"content_hash": content_hash,
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"status": "duplicate",
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"reason": "db_unique",
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},
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)
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# 8) 刷新 token last_used_at(异步,不影响主流程)
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tok.last_used_at = datetime.now(timezone.utc)
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await session.commit()
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await session.refresh(article)
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logger.info(
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"ingest created: source=%s external_id=%s article_id=%s hash=%s...",
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src.slug, payload.external_id, article.id, content_hash[:12],
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)
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return IngestResponse(
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article_id=article.id,
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content_hash=content_hash,
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status="created",
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)
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