LongArticleTaskServer/app/domains/decode_task/ad_platform_articles_decode/entrance.py

import json
from typing import Dict
from tqdm import tqdm

from app.core.database import DatabaseManager
from app.core.observability import LogService

from ._const import AdPlatformArticlesDecodeConst
from ._mapper import AdPlatformArticlesDecodeMapper
from ._util import AdPlatformArticlesDecodeUtil


class AdPlatformArticlesDecodeTask(AdPlatformArticlesDecodeConst):
    def __init__(self, pool: DatabaseManager, log_service: LogService):
        self.pool = pool
        self.log_service = log_service
        self.mapper = AdPlatformArticlesDecodeMapper(self.pool)
        self.tool = AdPlatformArticlesDecodeUtil()

    async def create_single_decode_task(self, article: Dict):
        # Acquire Lock
        article_id = article["id"]
        acquire_lock = await self.mapper.update_article_decode_status(
            article_id, self.INIT_STATUS, self.PROCESSING_STATUS
        )
        if not acquire_lock:
            await self.log_service.log(
                contents={
                    "article_id": article_id,
                    "task": "create_decode_task",
                    "status": "skip",
                    "message": "acquire lock failed",
                }
            )
            return

        # 与解构系统交互，创建解构任务
        response = await self.tool.create_decode_task(article)
        response_code = response.get("code")
        if response_code != self.SUCCESS_CODE:
            # 解构任务创建失败
            await self.mapper.update_article_decode_status(
                article_id, self.PROCESSING_STATUS, self.FAILED_STATUS
            )
            await self.log_service.log(
                contents={
                    "article_id": article_id,
                    "task": "create_decode_task",
                    "status": "fail",
                    "data": response,
                }
            )
            return

        task_id = response.get("data", {}).get("task_id")
        if not task_id:
            # 解构任务创建失败
            await self.mapper.update_article_decode_status(
                article_id, self.PROCESSING_STATUS, self.FAILED_STATUS
            )
            await self.log_service.log(
                contents={
                    "article_id": article_id,
                    "task": "create_decode_task",
                    "status": "fail",
                    "data": response,
                }
            )
            return

        # 创建 decode 任务成功
        await self.log_service.log(
            contents={
                "article_id": article_id,
                "task": "create_decode_task",
                "status": "success",
                "data": response,
            }
        )

        wx_sn = article["wx_sn"]
        remark = f"task_id: {task_id}-创建解构任务"
        record_row = await self.mapper.record_decode_task(task_id, wx_sn, remark)
        if not record_row:
            # 记录解构任务失败
            await self.mapper.update_article_decode_status(
                article_id, self.PROCESSING_STATUS, self.FAILED_STATUS
            )
            await self.log_service.log(
                contents={
                    "article_id": article_id,
                    "task": "record_decode_task",
                    "status": "fail",
                    "message": "创建 decode 记录失败",
                    "data": response,
                }
            )
            return

        # 记录创建成功
        await self.mapper.update_article_decode_status(
            article_id, self.PROCESSING_STATUS, self.SUCCESS_STATUS
        )

    async def fetch_single_task(self, task: Dict):
        task_id = task["task_id"]

        # acquire lock
        acquire_lock = await self.mapper.update_decode_task_status(
            task_id, self.INIT_STATUS, self.PROCESSING_STATUS
        )
        if not acquire_lock:
            return

        response = await self.tool.fetch_decode_result(task_id)
        if not response:
            await self.mapper.update_decode_task_status(
                task_id=task_id,
                ori_status=self.PROCESSING_STATUS,
                new_status=self.INIT_STATUS,
                remark="获取解构结果失败，服务异常，已回滚状态",
            )
            return

        # 请求成功
        response_code = response.get("code")
        if response_code != self.SUCCESS_CODE:
            # 解构任务获取失败
            await self.mapper.update_decode_task_status(
                task_id=task_id,
                ori_status=self.PROCESSING_STATUS,
                new_status=self.FAILED_STATUS,
                remark=f"请求解构接口返回异常，标记为失败：{json.dumps(response, ensure_ascii=False)}",
            )
            return

        response_data = response.get("data", {})
        response_task_id = response_data.get("taskId")
        if task_id != response_task_id:
            # 解构任务获取失败
            await self.mapper.update_decode_task_status(
                task_id=task_id,
                ori_status=self.PROCESSING_STATUS,
                new_status=self.FAILED_STATUS,
                remark=f"请求解构接口TaskId异常：{json.dumps(response, ensure_ascii=False)}",
            )
            return

        status = response_data.get("status")
        match status:
            case self.PENDING:
                await self.mapper.update_decode_task_status(
                    task_id=task_id,
                    ori_status=self.PROCESSING_STATUS,
                    new_status=self.INIT_STATUS,
                    remark=f"解构任务状态为PENDING，继续轮询",
                )

            case self.RUNNING:
                await self.mapper.update_decode_task_status(
                    task_id=task_id,
                    ori_status=self.PROCESSING_STATUS,
                    new_status=self.INIT_STATUS,
                    remark=f"解构任务状态为RUNNING，继续轮询",
                )

            case self.SUCCESS:
                await self.mapper.set_decode_result(
                    task_id=task_id,
                    result=json.dumps(response_data, ensure_ascii=False),
                )

            case self.FAILED:
                await self.mapper.update_decode_task_status(
                    task_id=task_id,
                    ori_status=self.PROCESSING_STATUS,
                    new_status=self.FAILED_STATUS,
                    remark=f"解构任务状态为FAILED，标记为失败",
                )

            case _:
                await self.mapper.update_decode_task_status(
                    task_id=task_id,
                    ori_status=self.PROCESSING_STATUS,
                    new_status=self.INIT_STATUS,
                    remark=f"解构任务状态未知(status={status})，回滚待重试：{json.dumps(response_data, ensure_ascii=False)}",
                )
                await self.log_service.log(
                    contents={
                        "task": "fetch_single_task",
                        "task_id": task_id,
                        "status": "unknown",
                        "message": f"unexpected decode status: {status}",
                        "data": response_data,
                    }
                )

    async def create_tasks(self):
        article_list = await self.mapper.fetch_decode_articles()
        if not article_list:
            await self.log_service.log(
                contents={"task": "create_tasks", "message": "No more articles to decode"}
            )
            return

        for article in tqdm(article_list, desc="Creating decode tasks"):
            await self.create_single_decode_task(article)

    async def fetch_results(self):
        decoding_tasks = await self.mapper.fetch_decoding_tasks()
        if not decoding_tasks:
            await self.log_service.log(
                contents={"task": "fetch_results", "message": "No more tasks to fetch"}
            )
            return

        for task in decoding_tasks:
            await self.fetch_single_task(task)

    async def deal(self, task_name):
        match task_name:
            case "create_tasks":
                await self.create_tasks()

            case "fetch_results":
                await self.fetch_results()


__all__ = ["AdPlatformArticlesDecodeTask"]