crawlab_feader/FworkSpider/mongo_pipeline.py

# -*- coding: utf-8 -*-
"""
Created on 2021-04-18 14:12:21
---------
@summary: 导出数据
---------
@author: 马国鹏
@email:  305021384@qq.com
"""
from typing import Dict, List, Tuple
import time
from feapder.db.mongodb import MongoDB
from feapder.dedup import Dedup
from feapder.pipelines import BasePipeline
from feapder.utils.log import log
from untils.tools import *
from crawlab import save_item



class MongoPipeline(BasePipeline):
    def __init__(self):
        self._to_db = None

    @property
    def to_db(self):
        if not self._to_db:
            self._to_db = MongoDB()

        return self._to_db

    def save_items(self, table, items: List[Dict]) -> bool:
        """
        保存数据
        Args:
            table: 表名
            items: 数据，[{},{},...]

        Returns: 是否保存成功 True / False
                 若False，不会将本批数据入到去重库，以便再次入库
        """
        try:
            print(table)
            add_count = self.to_db.add_batch(coll_name=table, datas=items)
            for item in items:
                dedup = Dedup(Dedup.BloomFilter)
                dedup.add([item.get("href")])
                # save_item({'count':item.get("href")})
            datas_size = len(items)
            log.info(
                "共导出 %s 条数据到 %s,  新增 %s条, 重复 %s 条"
                % (datas_size, table, add_count, datas_size - add_count)
            )
            if table == "mgp_list":
                save_item({"site": "新增/回填", "title": add_count})

            return True
        except Exception as e:
            log.exception(e)
            return False

    def update_items(self, table, items: List[Dict], update_keys=Tuple) -> bool:
        """
        更新数据
        Args:
            table: 表名
            items: 数据，[{},{},...]
            update_keys: 更新的字段, 如 ("title", "publish_time")

        Returns: 是否更新成功 True / False
                 若False，不会将本批数据入到去重库，以便再次入库

        """
        try:
            add_count = self.to_db.add_batch(
                coll_name=table,
                datas=items,
                update_columns=update_keys or list(items[0].keys()),
            )
            datas_size = len(items)
            update_count = datas_size - add_count
            msg = "共导出 %s 条数据到 %s,  新增 %s 条, 更新 %s 条" % (
                datas_size,
                table,
                add_count,
                update_count,
            )
            if update_keys:
                msg += " 更新字段为 {}".format(update_keys)
            log.info(msg)

            return True
        except Exception as e:
            log.exception(e)
            return False