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92 lines
3.4 KiB
92 lines
3.4 KiB
import time
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import requests
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import hashlib
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from inscriptis import get_text
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# Some common stuff here that can be moved to a base class
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class perform_site_check():
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def __init__(self, *args, datastore, **kwargs):
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super().__init__(*args, **kwargs)
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self.datastore = datastore
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def run(self, uuid):
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timestamp = int(time.time()) # used for storage etc too
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stripped_text_from_html = False
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changed_detected = False
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update_obj = {'previous_md5': self.datastore.data['watching'][uuid]['previous_md5'],
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'history': {},
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"last_checked": timestamp
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}
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extra_headers = self.datastore.get_val(uuid, 'headers')
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# Tweak the base config with the per-watch ones
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request_headers = self.datastore.data['settings']['headers']
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request_headers.update(extra_headers)
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# https://github.com/psf/requests/issues/4525
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# Requests doesnt yet support brotli encoding, so don't put 'br' here, be totally sure that the user cannot
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# do this by accident.
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if 'Accept-Encoding' in request_headers and "br" in request_headers['Accept-Encoding']:
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request_headers['Accept-Encoding'] = request_headers['Accept-Encoding'].replace(', br', '')
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try:
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timeout = self.datastore.data['settings']['requests']['timeout']
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except KeyError:
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# @todo yeah this should go back to the default value in store.py, but this whole object should abstract off it
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timeout = 15
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try:
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url = self.datastore.get_val(uuid, 'url')
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r = requests.get(url,
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headers=request_headers,
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timeout=timeout,
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verify=False)
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stripped_text_from_html = get_text(r.text)
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# Usually from networkIO/requests level
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except (requests.exceptions.ConnectionError, requests.exceptions.ReadTimeout) as e:
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update_obj["last_error"] = str(e)
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print(str(e))
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except requests.exceptions.MissingSchema:
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print("Skipping {} due to missing schema/bad url".format(uuid))
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# Usually from html2text level
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except UnicodeDecodeError as e:
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update_obj["last_error"] = str(e)
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print(str(e))
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# figure out how to deal with this cleaner..
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# 'utf-8' codec can't decode byte 0xe9 in position 480: invalid continuation byte
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else:
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# We rely on the actual text in the html output.. many sites have random script vars etc,
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# in the future we'll implement other mechanisms.
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update_obj["last_check_status"] = r.status_code
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update_obj["last_error"] = False
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if not len(r.text):
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update_obj["last_error"] = "Empty reply"
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fetched_md5 = hashlib.md5(stripped_text_from_html.encode('utf-8')).hexdigest()
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# could be None or False depending on JSON type
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if self.datastore.data['watching'][uuid]['previous_md5'] != fetched_md5:
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changed_detected = True
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# Don't confuse people by updating as last-changed, when it actually just changed from None..
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if self.datastore.get_val(uuid, 'previous_md5'):
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update_obj["last_changed"] = timestamp
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update_obj["previous_md5"] = fetched_md5
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return changed_detected, update_obj, stripped_text_from_html
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