You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
132 lines
3.8 KiB
132 lines
3.8 KiB
import os
|
|
import time
|
|
from abc import ABC, abstractmethod
|
|
from selenium import webdriver
|
|
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
|
|
from selenium.common.exceptions import WebDriverException
|
|
import urllib3.exceptions
|
|
|
|
|
|
class EmptyReply(Exception):
|
|
pass
|
|
|
|
class Fetcher():
|
|
error = None
|
|
status_code = None
|
|
content = None # Should be bytes?
|
|
|
|
fetcher_description ="No description"
|
|
|
|
@abstractmethod
|
|
def get_error(self):
|
|
return self.error
|
|
|
|
@abstractmethod
|
|
def run(self, url, timeout, request_headers):
|
|
# Should set self.error, self.status_code and self.content
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_last_status_code(self):
|
|
return self.status_code
|
|
|
|
@abstractmethod
|
|
# Return true/false if this checker is ready to run, in the case it needs todo some special config check etc
|
|
def is_ready(self):
|
|
return True
|
|
|
|
# Maybe for the future, each fetcher provides its own diff output, could be used for text, image
|
|
# the current one would return javascript output (as we use JS to generate the diff)
|
|
#
|
|
# Returns tuple(mime_type, stream)
|
|
# @abstractmethod
|
|
# def return_diff(self, stream_a, stream_b):
|
|
# return
|
|
|
|
def available_fetchers():
|
|
import inspect
|
|
from changedetectionio import content_fetcher
|
|
p=[]
|
|
for name, obj in inspect.getmembers(content_fetcher):
|
|
if inspect.isclass(obj):
|
|
# @todo html_ is maybe better as fetcher_ or something
|
|
# In this case, make sure to edit the default one in store.py and fetch_site_status.py
|
|
if "html_" in name:
|
|
t=tuple([name,obj.fetcher_description])
|
|
p.append(t)
|
|
|
|
return p
|
|
|
|
class html_webdriver(Fetcher):
|
|
if os.getenv("WEBDRIVER_URL"):
|
|
fetcher_description = "WebDriver Chrome/Javascript via '{}'".format(os.getenv("WEBDRIVER_URL"))
|
|
else:
|
|
fetcher_description = "WebDriver Chrome/Javascript"
|
|
|
|
command_executor = ''
|
|
|
|
def __init__(self):
|
|
self.command_executor = os.getenv("WEBDRIVER_URL", 'http://browser-chrome:4444/wd/hub')
|
|
|
|
def run(self, url, timeout, request_headers):
|
|
|
|
# check env for WEBDRIVER_URL
|
|
driver = webdriver.Remote(
|
|
command_executor=self.command_executor,
|
|
desired_capabilities=DesiredCapabilities.CHROME)
|
|
|
|
try:
|
|
driver.get(url)
|
|
except WebDriverException as e:
|
|
# Be sure we close the session window
|
|
driver.quit()
|
|
raise
|
|
|
|
# @todo - how to check this? is it possible?
|
|
self.status_code = 200
|
|
|
|
# @todo - dom wait loaded?
|
|
time.sleep(5)
|
|
self.content = driver.page_source
|
|
|
|
driver.quit()
|
|
|
|
|
|
def is_ready(self):
|
|
from selenium import webdriver
|
|
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
|
|
from selenium.common.exceptions import WebDriverException
|
|
|
|
driver = webdriver.Remote(
|
|
command_executor=self.command_executor,
|
|
desired_capabilities=DesiredCapabilities.CHROME)
|
|
|
|
# driver.quit() seems to cause better exceptions
|
|
driver.quit()
|
|
|
|
|
|
return True
|
|
|
|
# "html_requests" is listed as the default fetcher in store.py!
|
|
class html_requests(Fetcher):
|
|
fetcher_description = "Basic fast Plaintext/HTTP Client"
|
|
|
|
def run(self, url, timeout, request_headers):
|
|
import requests
|
|
|
|
r = requests.get(url,
|
|
headers=request_headers,
|
|
timeout=timeout,
|
|
verify=False)
|
|
|
|
html = r.text
|
|
|
|
|
|
# @todo test this
|
|
if not r or not html or not len(html):
|
|
raise EmptyReply(url)
|
|
|
|
self.status_code = r.status_code
|
|
self.content = html
|
|
|