crawlab_feader/NoteWork/details/details_firefox.py

# -*- coding: utf-8 -*-
"""
Created on 2021-12-13 13:25:15
---------
@summary:
---------
@author: 马国鹏
"""

import feapder
from feapder.utils.tools import wechat_warning
import execjs
from items.spider_item import DataBakItem, MgpListItem
from feapder.db.mongodb import MongoDB



class FirefoxDetails(feapder.Spider):
    _to_db = None
    db_name = 'mgp_list'
    send_list = []
    # 定义mongo链接
    @property
    def to_db(self):
        if not self._to_db:
            self._to_db = MongoDB()
        return self._to_db

    def start_requests(self):
        while True:
            data_lsit = self.to_db.find(self.db_name,{"parser_name":"details_firefox"},sort={"date":-1})
            print(data_lsit)
            for item in data_lsit:
                print(item)
                request_params = item.get("request_params")
                if item.get("ex_python"):
                    exec(item.get("ex_python"))

                yield feapder.Request(url=item.get("parse_url"),item=item.get("item"),
                                      deal_detail=item.get("deal_detail"),**request_params,
                                      callback=eval(item.get("parse")),base_info=item,render=True,
                                      render_time=item.get("render_time"))
                self.to_db.delete(self.db_name,item)
            break

    def detail_get(self,request,response):
        print(response.text)
        items = request.item
        # print(items)
        list_item = DataBakItem()
        for key in items:
            list_item.__setitem__(key,items[key])
        html = ''
        for xpath in request.deal_detail:
            html = response.xpath(xpath).extract_first()  # 标书详细内容
            if html is not None:
                break
        list_item.contenthtml = html
        yield list_item

    def failed_request(self, request, response):
        '''请求、解析次数超过上限后，将原信息重新保存至mongo，并修改failed字段'''
        if response is None:
            code = 0
        code = response.status_code
        err_dic = {"200": "analysis", "400": "download", "500": "servers", "300": "download"}
        if 200 <= code < 300:
            err = 'analysis'
        elif 300 <= code < 400:
            err = 'download'
        elif 400 <= code < 500:
            err = 'download'
        elif 500 <= code:
            err = "servers"
        else:
            err = "timeout"
        mgp = MgpListItem()
        mgp.code = code
        mgp.error = err
        items = request.base_info
        for key in items:
            mgp.__setitem__(key, items[key])
        mgp.failed += 1
        if mgp.pri is None:
            mgp.pri = 0

        if mgp.pri > 5:
            if mgp.failed in (10, 30, 50, 100, 200) or mgp.failed > 200:
                if self.send_list.count(mgp.item.get("site")) == mgp.pri - 5:
                    '''
                    根据爬虫优先级报警'''
                    info = f'''`
        您的爬虫出现超<font color="#FF0000">{mgp.failed}</font>次请求、解析失败的任务。
        > **爬虫名称:** {mgp.item.get("site")}
        > **栏目名称:** {mgp.item.get("channel")}
        > **爬虫代码:** {mgp.item.get("spidercode")}
        > **爬虫等级:** {mgp.pri}
        > **所属管理人员:** {mgp.author}
        请登录剑鱼爬虫管理平台查看详情。
        `'''
                    wechat_warning(info)
                    self.send_list.append(mgp.item.get("site"))
        yield mgp


    def end_callback(self):
        print("爬虫结束")
        # wechat_warning(f"爬虫名称 爬虫结束\n共抓取{self.count}次详情页数据")
    # def download_midware(self, request):
    #     request.proxies = self.prox_pool.get()
    #     return request


if __name__ == "__main__":
    FirefoxDetails(redis_key="magp:details:firefox").start()