crawlab_feader/FworkSpider/feapder/pipelines/rabbitmq_pipeline.py

# -*- coding: utf-8 -*-
"""
Created on 2023-09-23
---------
@summary:  rabbitmq数据通道
---------
@author: Dzr
"""
from typing import Dict, List

from feapder.db.rabbitMq import RabbitMQ
from feapder.pipelines import BasePipeline
from feapder.utils.tools import log


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

    @property
    def to_db(self):
        if not self._to_db:
            self._to_db = RabbitMQ()
        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:
            table_name = "savemongo:" + table
            self.to_db.declare(queue=table_name)
            self.to_db.add(table_name, items)
            datas_size = len(items)
            log.info("共导出 %s 条数据到 %s" % (datas_size, table_name))
            return True
        except Exception as e:
            log.exception(e)
            return False

    def close(self):
        self.to_db.close()