Created
December 27, 2018 16:02
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| from datetime import datetime | |
| import os | |
| import pkgutil | |
| from typing import Dict, List, Optional | |
| from analytics_check.items import ScriptCheckItem | |
| import scrapy # type: ignore | |
| import scrapy_splash # type: ignore | |
| from scrapy.loader import ItemLoader # type: ignore | |
| class ScriptSpider(scrapy.Spider): | |
| name:str = "script_check" | |
| # scraping hub can't find env variables in the spider | |
| # so it must pass as an argument | |
| # scrapy crawl script_check -a http_user=abc123 | |
| try: | |
| http_user:str = self.http_user | |
| except: | |
| http_user:str = os.getenv("http_user") | |
| try: | |
| data_bytes:Optional[bytes] = pkgutil.get_data("analytics_check", "resources/data.csv") | |
| data_string:str = data_bytes.decode("utf-8") | |
| lst:List[str] = data_string.split("\r") | |
| data:List[tuple] = [tuple(i.split(",")) for i in lst] | |
| urls:List[tuple] = [] | |
| for tup in data: | |
| (a,b,c) = tup | |
| urls.append((a.strip(),b,c)) | |
| except Exception as e: | |
| print(f"Error with csv file: {e}") | |
| def start_requests(self): | |
| for channel, url, script in self.urls: | |
| yield scrapy.Request(url, self.parse, meta={ | |
| 'channel': channel, | |
| 'script': script, | |
| 'splash': { | |
| 'args': { | |
| 'html': 1, | |
| 'png': 0, | |
| 'wait': 1 | |
| }, | |
| } | |
| }) | |
| def parse(self, response): | |
| script_exists:bool = False | |
| script:str = response.meta['script'] | |
| channel:str = response.meta['channel'] | |
| script_selector:str = f"script[src='{script}']" | |
| script_element = response.css(script_selector) | |
| script_src:str = "" | |
| try: | |
| if script_element: | |
| script_src = script_element[0].xpath("@src").extract()[0] | |
| if script_src == script: | |
| script_exists = True | |
| except Exception as e: | |
| pass | |
| data:dict = { | |
| "channel": channel, | |
| "url": response.url, | |
| "script_exists": script_exists, | |
| "script": script, | |
| "last_checked": datetime.now().strftime('%c') | |
| } | |
| item = ItemLoader(item=ScriptCheckItem(data), response=response) | |
| return item.load_item() |
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