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DCU OpenTimeTable module events scrapy code
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| import scrapy | |
| import json | |
| import scrapy.http | |
| import re | |
| import datetime | |
| def build_weeks(): | |
| ret = [] | |
| for weekNo in range(16, 30): | |
| week1 = datetime.date(2021, 9, 20) | |
| week = week1 + datetime.timedelta(weeks=weekNo-1) | |
| ret.append({ | |
| "WeekNumber": weekNo, | |
| "WeekLabel": str(weekNo), | |
| "FirstDayInWeek": f'{week.strftime("%Y-%m-%d")}T00:00:00+00:00' | |
| }) | |
| return ret | |
| class TimetableSpider(scrapy.Spider): | |
| name = 'timetable' | |
| allowed_domains = ['opentimetable.dcu.ie'] | |
| def build_index_request_page(self, pageNo: int) -> scrapy.Request: | |
| return scrapy.FormRequest( | |
| f"https://opentimetable.dcu.ie/broker/api/CategoryTypes/525fe79b-73c3-4b5c-8186-83c652b3adcc/Categories/Filter?pageNumber={pageNo}&query=", | |
| formdata=[{"Identity": "241e4d36-60e0-49f8-b27e-99416745d98d","Values": ["null"]}], | |
| headers={ | |
| "Content-Type": "application/json", | |
| "Accept": "application/json", | |
| "Authorization": self.auth_token | |
| }, | |
| callback=self.parse_index_page | |
| ) | |
| def build_course_events_fetch(self, courseId: str): | |
| formdata = { | |
| "ViewOptions": { | |
| "Weeks": build_weeks() | |
| }, | |
| "CategoryIdentities": [ | |
| courseId | |
| ] | |
| } | |
| return scrapy.Request( | |
| f"https://opentimetable.dcu.ie/broker/api/categoryTypes/525fe79b-73c3-4b5c-8186-83c652b3adcc/categories/events/filter", | |
| body=json.dumps(formdata), | |
| method='POST', | |
| headers={ | |
| "Content-Type": "application/json", | |
| "Accept": "application/json", | |
| "Authorization": self.auth_token | |
| }, | |
| callback=self.parse_course_details | |
| ) | |
| def start_requests(self): | |
| yield scrapy.Request(f"https://opentimetable.dcu.ie", callback=self.parse_index_html) | |
| def parse_index_html(self, response:scrapy.http.HtmlResponse): | |
| scripts = response.css("script::attr(src)").getall() | |
| for src in scripts: | |
| if 'main' in src and '.bundle.js' in src: | |
| yield scrapy.Request(response.urljoin(src), callback=self.extract_auth_token) | |
| def extract_auth_token(self, response:scrapy.http.Response): | |
| m = re.search(r'apiAuthentication:["](basic [^"]+)"', response.text) | |
| assert m is not None | |
| self.auth_token = m.group(1) | |
| yield self.build_index_request_page(1) | |
| def parse_index_page(self, response:scrapy.http.Response): | |
| data = response.json() | |
| # this will call on every page loaded, but be de-duped by Scrapy, right? | |
| for page in range(data['CurrentPage'], data['TotalPages']): | |
| yield self.build_index_request_page(page) | |
| for result in data["Results"]: | |
| yield result | |
| yield self.build_course_events_fetch(result["Identity"]) | |
| def parse_course_details(self, response:scrapy.http.Response): | |
| data = response.json() | |
| for record in data: | |
| yield record |
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| grep Extra timetables.jl | jq '.CategoryEvents//[] | .[] | [(.Name | sub("[[].*"; "") ), .Name, .HostKey, .EventType, .Location, .Description, (.ExtraProperties//[] | .[] | select(.DisplayName == "Module Name") | .Value ), (.ExtraProperties//[] | .[] | select(.DisplayName == "Weeks") | .Value), .StartDateTime, .EndDateTime ] | @tsv' -r | pbcopy |
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| # Automatically created by: scrapy startproject | |
| # | |
| # For more information about the [deploy] section see: | |
| # https://scrapyd.readthedocs.io/en/latest/deploy.html | |
| [settings] | |
| default = settings | |
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| BOT_NAME = 'dcu_opentimetable' | |
| USER_AGENT = 'opentimetable scraper - please add bookmarks support' | |
| ROBOTSTXT_OBEY = True | |
| CONCURRENT_REQUESTS = 10 | |
| AUTOTHROTTLE_ENABLED = True | |
| AUTOTHROTTLE_TARGET_CONCURRENCY = 4 | |
| AUTOTHROTTLE_DEBUG = False | |
| # Enable and configure HTTP caching (disabled by default) | |
| # See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings | |
| HTTPCACHE_ENABLED = True | |
| HTTPCACHE_EXPIRATION_SECS = 3600 | |
| HTTPCACHE_DIR = 'httpcache' | |
| HTTPCACHE_IGNORE_HTTP_CODES = [503, 504, 505, 500, 400, 401, 402, 403, 404] | |
| #HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage' |
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