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Update AMP Content
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| #!/usr/bin/env python3 | |
| import base64 | |
| import glob | |
| import readline | |
| import time | |
| import OpenSSL | |
| from OpenSSL import crypto | |
| import requests | |
| from requests.packages.urllib3 import exceptions | |
| CACHE_DOMAIN = 'cdn.ampproject.org' | |
| """ | |
| Invalidates the AMP cache for a given URL following the guidelines at | |
| https://developers.google.com/amp/cache/update-cache | |
| ============= | |
| Prerequisites | |
| ============= | |
| 1. Create your private and public key | |
| 2. Publish the public key to your website at /.well-known/amphtml/apikey.pub | |
| 3. install the requests and OpenSSL libraries for Python 3 | |
| ======= | |
| Running | |
| ======= | |
| To run this script:: | |
| ./update_amp_cache.py | |
| """ | |
| class CacheUpdate: | |
| def __init__(self): | |
| requests.packages.urllib3.disable_warnings(exceptions.InsecureRequestWarning) | |
| def run(self): | |
| self.timestamp = int(time.time()) | |
| self.update_cache_url = "/update-cache/c/s/{}?amp_action=flush&_ts={}".format(self.amp_url, self.timestamp) | |
| self.calculate_signature() | |
| self.send_request() | |
| def calculate_signature(self): | |
| key_file = open(self.private_key_path, "r") | |
| key = key_file.read() | |
| key_file.close() | |
| pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, key) | |
| sign = OpenSSL.crypto.sign(pkey, self.update_cache_url, "sha256") | |
| self.signature = base64.b64encode(sign, altchars=b'-_').decode("utf-8") | |
| def send_request(self): | |
| domain = self.amp_url.partition('/')[0] | |
| prefix = domain.replace('.', '-') | |
| url = "https://{}.cache.{}{}&_url_signature={}".format(prefix, CACHE_DOMAIN, self.update_cache_url, self.signature) | |
| r = requests.get(url, verify=False) | |
| if r.status_code == 200: | |
| print("Successfully updated cached AMP content at {}".format(self.amp_url)) | |
| else: | |
| print("Cache update failed. Response code: {}".format(r.status_code)) | |
| print(r.content) | |
| # https://gist.github.com/iamatypeofwalrus/5637895 | |
| class TabCompleter(object): | |
| def path_completer(self,text,state): | |
| """ | |
| This is the tab completer for systems paths. | |
| Only tested on *nix systems | |
| """ | |
| line = readline.get_line_buffer().split() | |
| return [x for x in glob.glob(text+'*')][state] | |
| if __name__=="__main__": | |
| tabCompleter = TabCompleter() | |
| cacheUpdate = CacheUpdate() | |
| cacheUpdate.amp_url = input("Amp url (e.g. www.mysite.com/my-article/): ") | |
| readline.set_completer_delims('\t') | |
| readline.parse_and_bind("tab: complete") | |
| readline.set_completer(tabCompleter.path_completer) | |
| cacheUpdate.private_key_path = input("Private key path: ") | |
| cacheUpdate.run() |
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