LongArticleTaskServer/app/core/pipeline/crawler_pipeline.py

from typing import Dict, Tuple
from pydantic import BaseModel

from app.infra.external import AsyncApolloApi
from .schemas import CrawlerMetaArticle, CrawlerMetaAccount


class CrawlerPipeline:
    MODEL_TABLE_MAP: Dict[str, Tuple[type[BaseModel], str]] = {
        "article": (CrawlerMetaArticle, "crawler_meta_article"),
        "account": (CrawlerMetaAccount, "crawler_candidate_account_pool"),
        # 如后续有新类型，直接在这里加即可
    }

    def __init__(self, pool, log_client, config):
        self.pool = pool
        self.log_client = log_client
        self.apollo_client = AsyncApolloApi(apollo_config=config, app_id=None, env=None)

    async def whether_title_sensitive(self, title: str) -> bool:
        sensitive_word_list = await self.apollo_client.get_config_value(
            "sensitive_word_list"
        )
        for word in sensitive_word_list:
            if word in title:
                return True
        return False

    async def whether_article_title_duplicate(self, title: str) -> bool:
        query = f"""select article_id from crawler_meta_article where title = %s;"""
        duplicated_id = await self.pool.async_fetch(query=query, params=(title,))
        return True if duplicated_id else False

    async def whether_account_exist(self, account_id: str, media_type: str) -> bool:
        query = f"select id from crawler_candidate_account_pool where account_id = %s and media_type = %s;"
        duplicated_id = await self.pool.async_fetch(
            query=query, params=(account_id, media_type)
        )
        return True if duplicated_id else False

    async def save_single_record(self, media_type: str, item: dict) -> None:
        try:
            model_cls, table_name = self.MODEL_TABLE_MAP[media_type]

        except KeyError:
            raise ValueError(f"Unknown media type: {media_type!r}")

        record = model_cls(**item).model_dump(mode="python")
        insert_data = {k: v for k, v in record.items() if v is not None}
        if not insert_data:
            raise ValueError("All fields are None, nothing to insert")

        columns = ", ".join(f"`{col}`" for col in insert_data)
        placeholders = ", ".join(["%s"] * len(insert_data))
        sql = f"INSERT INTO `{table_name}` ({columns}) VALUES ({placeholders})"
        await self.pool.async_save(sql, tuple(insert_data.values()))

    async def save_item_to_database(self, media_type: str, item: dict, trace_id: str):
        """deal function"""
        item["trace_id"] = trace_id
        match media_type:
            case "video":
                await self.save_single_record(media_type, item)
            case "article":
                log_data = {
                    "title": item["title"],
                    "platform": item["platform"],
                    "mode": item["mode"],
                    "source": item["category"],
                }
                await self.log_client.log(
                    contents={
                        "task": "save_article",
                        "data": log_data,
                        "message": "start crawler article",
                        "code": 1001,
                    }
                )
                if await self.whether_article_title_duplicate(log_data["title"]):
                    await self.log_client.log(
                        contents={
                            "task": "save_article",
                            "data": log_data,
                            "message": "duplicate article title",
                            "code": 1002,
                        }
                    )
                    return

                if await self.whether_title_sensitive(item["title"]):
                    await self.log_client.log(
                        contents={
                            "task": "save_article",
                            "data": log_data,
                            "message": "title_sensitive",
                            "code": 1003,
                        }
                    )
                    item["title_sensitive"] = 1

                await self.save_single_record(media_type, item)
                await self.log_client.log(
                    contents={
                        "trace_id": trace_id,
                        "function": "save_article",
                        "data": item,
                        "message": "save article successfully",
                    }
                )
            case "account":
                if await self.whether_account_exist(
                    item["account_id"], item["media_type"]
                ):
                    return

                await self.save_single_record(media_type, item)
                await self.log_client.log(
                    contents={
                        "trace_id": trace_id,
                        "function": "save_account",
                        "data": item,
                        "message": "save account successfully",
                    }
                )
            case _:
                raise Exception("Unknown media type")