from .workers import app
from page_parse import comment
from config import conf
from page_get import get_page
from db.dao import (
WbDataOper, CommentOper)
from logger import crawler
from celery.exceptions import SoftTimeLimitExceeded
import time
BASE_URL = 'http://weibo.com/aj/v6/comment/big?ajwvr=6&id={}&page={}'
@app.task(ignore_result=True)
def crawl_comment_by_page(mid, page_num):
try:
cur_url = BASE_URL.format(mid, page_num)
html = get_page(cur_url, auth_level=1, is_ajax=True)
comment_datas = comment.get_comment_list(html, mid)
except SoftTimeLimitExceeded:
crawler.error(
"comment SoftTimeLimitExceeded mid={mid} page_num={page_num}".
format(mid=mid, page_num=page_num))
app.send_task(
'tasks.comment.crawl_comment_by_page',
args=(mid, page_num),
queue='comment_page_crawler',
routing_key='comment_page_info')
CommentOper.add_all(comment_datas)
if page_num == 1:
WbDataOper.set_weibo_comment_crawled(mid)
return html, comment_datas
@app.task(ignore_result=True)
def crawl_comment_page(mid):
limit = conf.get_max_comment_page() + 1
# 这里为了马上拿到返回结果，采用本地调用的方式
first_page = crawl_comment_by_page(mid, 1)[0]
total_page = comment.get_total_page(first_page)
if total_page < limit:
limit = total_page + 1
for page_num in range(2, limit):
crawl_comment_by_page(mid, page_num)
time.sleep(3)
@app.task(ignore_result=True)
def execute_comment_task():
# 只解析了根评论，而未对根评论下的评论进行抓取，如果有需要的同学，可以适当做修改
weibo_datas = WbDataOper.get_weibo_comment_not_crawled()
for weibo_data in weibo_datas:
app.send_task('tasks.comment.crawl_comment_page', args=(weibo_data.weibo_id,), queue='comment_crawler',
routing_key='comment_info')
