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"""Module to crawl the website 'https://www.mof.gov.cn' to fetch and process articles."""
import time
import urllib.request
from datetime import datetime, timedelta
from lxml import etree
from prefect import task, get_run_logger
from controllers.utils import crawl_by_url
@task(name = "Data Collection - mof", log_prints = True)
def crawl(delta):
"""
Crawls the website to retrieve articles based on the specified delta.
Args:
delta (int): The number of days in the past to retrieve articles from.
Returns:
None
"""
logger = get_run_logger()
logger.info("mof.gov.cn")
i = 0
while i > -1:
if i == 0:
category_url = "https://www.mof.gov.cn/zhengwuxinxi/caizhengxinwen/"
else:
category_url = f"https://www.mof.gov.cn/zhengwuxinxi/caizhengxinwen/index_{i}.htm"
i = i + 1
req = urllib.request.urlopen(category_url, timeout=60)
text = req.read()
html_text = text.decode("utf-8")
page = etree.HTML(html_text)
articlelist = page.xpath(
"//div[contains(@class, 'xwfb_listerji')]/ul/li[not(@class = 'clear')]"
)
for article in articlelist:
if isinstance(article, etree._Element):
subelement = etree.tostring(article).decode()
subpage = etree.HTML(subelement)
date = subpage.xpath("//span/text()")[0]
parsed_datetime = datetime.strptime(
time.strftime("%Y-%m-%d", time.strptime(date, "%Y-%m-%d")),
"%Y-%m-%d")
if parsed_datetime < (datetime.today() - timedelta(days=delta)):
i = -1
else:
urls = subpage.xpath("//a[contains(@target, '_blank')]/@href")
for url in urls:
try:
article = {}
url = url.replace("../", "https://www.mof.gov.cn/zhengwuxinxi/")
url = url.replace(
"./", "https://www.mof.gov.cn/zhengwuxinxi/caizhengxinwen/")
article['category'] = "Financial News"
crawl_by_url(url, article)
except (urllib.error.URLError, etree.XMLSyntaxError) as error:
logger.error(error)
i = 0
while i > -1:
if i == 0:
category_url = "https://www.mof.gov.cn/zhengwuxinxi/zhengcejiedu/"
else:
category_url = f"https://www.mof.gov.cn/zhengwuxinxi/zhengcejiedu/index_{i}.htm"
i = i + 1
req = urllib.request.urlopen(category_url, timeout=60)
text = req.read()
html_text = text.decode("utf-8")
page = etree.HTML(html_text)
articlelist = page.xpath(
"//div[contains(@class, 'xwfb_listerji')]/ul/li[not(@class = 'clear')]"
)
for article in articlelist:
if isinstance(article, etree._Element):
subelement = etree.tostring(article).decode()
subpage = etree.HTML(subelement)
date = subpage.xpath("//span/text()")[0]
parsed_datetime = datetime.strptime(
time.strftime("%Y-%m-%d", time.strptime(date, "%Y-%m-%d")),
"%Y-%m-%d")
if parsed_datetime < (datetime.today() - timedelta(days=delta)):
i = -1
else:
urls = subpage.xpath("//a[contains(@target, '_blank')]/@href")
for url in urls:
try:
article = {}
url = url.replace("./", category_url)
article['category'] = "Policy Interpretation"
crawl_by_url(url, article)
except (urllib.error.URLError, etree.XMLSyntaxError) as error:
logger.error(error)
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