automatic_crawler/spider/crawler_online/fuxiaoshun.py

"""
福小顺推荐爬虫代码
2024-01-22
"""

import os
import sys
import json
import time
import uuid
import random
import asyncio
import aiohttp
import datetime
from base64 import b64decode
from Crypto.Cipher import AES
from Crypto.Util.Padding import unpad

sys.path.append(os.getcwd())

from application.items import VideoItem
from application.pipeline import PiaoQuanPipeline
from application.common.messageQueue import MQ
from application.common.proxies import tunnel_proxies
from application.common.log import AliyunLogger


def fxs_decrypt(ciphertext):
    """
    福小顺逆向解密代码
    :param ciphertext: 秘文
    :return: 原文
    """
    password = 'xlc2ze7qnqg8xi1d'.encode()
    iv = password
    try:
        ct = b64decode(ciphertext.encode('utf-8'))
        cipher = AES.new(password, AES.MODE_CBC, iv)
        pt = unpad(cipher.decrypt(ct), AES.block_size)
        return pt.decode()
    except Exception as e:
        print("Incorrect decryption {}".format(e))
        return None


class FuXiaoShunRecommend(object):
    """
    福小顺推荐爬虫
    需要逆序, 逆向结果： AES加密，password=iv='xlc2ze7qnqg8xi1d'.encode()
    """

    def __init__(self, platform, mode, rule_dict, user_list, env="prod"):
        self.platform = platform
        self.mode = mode
        self.rule_dict = rule_dict
        self.user_list = user_list
        self.env = env
        self.download_cnt = 0
        self.mq = MQ(topic_name="topic_crawler_etl_" + self.env)
        self.expire_flag = False
        self.aliyun_log = AliyunLogger(platform=self.platform, mode=self.mode)

    async def process_video_obj(self, video_obj):
        """
        处理每一个视频内容
        :return: None
        """
        trace_id = self.platform + str(uuid.uuid1())
        our_user = random.choice(self.user_list)
        publish_time_stamp = datetime.datetime.strptime(
            video_obj["create_at"], "%Y-%m-%d %H:%M:%S"
        ).timestamp()
        item = VideoItem()
        item.add_video_info("user_id", our_user["uid"])
        item.add_video_info("user_name", our_user["nick_name"])
        item.add_video_info("video_id", video_obj["id"])
        item.add_video_info("video_title", video_obj["name"])
        item.add_video_info("publish_time_str", video_obj["create_at"])
        item.add_video_info("publish_time_stamp", int(publish_time_stamp))
        item.add_video_info("video_url", video_obj["cover"])
        item.add_video_info(
            "cover_url", video_obj["cover"] + "&vframe/png/offset/1/w/200"
        )
        item.add_video_info("like_cnt", video_obj["num_like"])
        item.add_video_info("play_cnt", video_obj["num_read"])
        item.add_video_info("comment_cnt", video_obj["num_comment"])
        item.add_video_info("out_video_id", video_obj["id"])
        item.add_video_info("platform", self.platform)
        item.add_video_info("strategy", self.mode)
        item.add_video_info("session", "{}-{}".format(self.platform, int(time.time())))
        mq_obj = item.produce_item()
        pipeline = PiaoQuanPipeline(
            platform=self.platform,
            mode=self.mode,
            rule_dict=self.rule_dict,
            env=self.env,
            item=mq_obj,
            trace_id=trace_id,
        )
        if pipeline.process_item():
            self.download_cnt += 1
            self.mq.send_msg(mq_obj)
            self.aliyun_log.logging(
                code="1002",
                message="成功发送至 ETL",
                data=mq_obj,
            )
            if self.download_cnt >= int(
                    self.rule_dict.get("videos_cnt", {}).get("min", 200)
            ):
                self.expire_flag = True

    async def get_recommend_list(self, session, page_index):
        """
        获取推荐页面的video_list
        :param session: aiohttp 的session
        :param page_index: 页码
        :return: None
        """
        headers = {
            "Host": "shun.nnjuxing.cn",
            "xweb_xhr": "1",
            "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 MicroMessenger/6.8.0(0x16080000) NetType/WIFI MiniProgramEnv/Mac MacWechat/WMPF MacWechat/3.8.6(0x13080610) XWEB/1156",
            "content-type": "application/json",
            "accept": "*/*",
            "sec-fetch-site": "cross-site",
            "sec-fetch-mode": "cors",
            "sec-fetch-dest": "empty",
            "referer": "https://servicewechat.com/wx5b89401c90c9f367/3/page-frame.html",
            "accept-language": "en-US,en;q=0.9"
        }
        url = "https://shun.nnjuxing.cn/videos/api.videos/getItem"
        params = {
            "mark": "",
            "page": page_index
        }
        async with session.get(url, headers=headers, params=params, proxy=tunnel_proxies()) as response:
            cryp_data = await response.json()
            data = json.loads(fxs_decrypt(cryp_data['data']))
            for index, video_obj in enumerate(data['list'], 1):
                try:
                    self.aliyun_log.logging(
                        code="1001",
                        message="扫描到一条视频",
                        data=video_obj,
                    )
                    await self.process_video_obj(video_obj)
                except Exception as e:
                    self.aliyun_log.logging(
                        code="3000",
                        message="抓取第{}条的时候出现问题， 报错信息是{}".format(index, e),
                    )

    async def run(self):
        """
        执行代码
        :return: None
        """
        async with aiohttp.ClientSession() as session:
            for page in range(1, 100):
                if self.expire_flag:
                    self.aliyun_log.logging(
                        code="2000",
                        message="本轮已经抓取到足够的数据，自动退出\t{}".format(self.download_cnt)
                    )
                    return
                else:
                    try:
                        await self.get_recommend_list(session, page_index=page)
                    except Exception as e:
                        self.aliyun_log.logging(
                            code="3000",
                            message="抓取第{}页时候出现错误， 报错信息是{}".format(page, e),
                        )


if __name__ == '__main__':
    FXS = FuXiaoShunRecommend(
        platform="fuxiaoshun",
        mode="recommend",
        rule_dict={},
        user_list=[{"uid": "12345678", "nick_name": "luojunhui"}]
    )
    loop = asyncio.get_event_loop()
    loop.run_until_complete(FXS.run())