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Retry to get file from URL once failed

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(Resolves #1038)
This commit is contained in:
Max G 2020-07-11 14:09:51 +03:00
parent 0a96dcad34
commit f26168194b
2 changed files with 16 additions and 11 deletions
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8
testUpdateHostsFile.py
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@ -1617,14 +1617,14 @@ class GetFileByUrl(BaseStdout):
url = b"www.google.com"
expected = "www.google.com"
actual = get_file_by_url(url)
actual = get_file_by_url(url, delay=0)
self.assertEqual(actual, expected)
@mock.patch("updateHostsFile.urlopen", side_effect=mock_url_open_fail)
def test_read_url_fail(self, _):
url = b"www.google.com"
self.assertIsNone(get_file_by_url(url))
self.assertIsNone(get_file_by_url(url, delay=0))
expected = "Problem getting file:"
output = sys.stdout.getvalue()
@ -1634,7 +1634,7 @@ class GetFileByUrl(BaseStdout):
@mock.patch("updateHostsFile.urlopen", side_effect=mock_url_open_read_fail)
def test_read_url_read_fail(self, _):
url = b"www.google.com"
self.assertIsNone(get_file_by_url(url))
self.assertIsNone(get_file_by_url(url, delay=0))
expected = "Problem getting file:"
output = sys.stdout.getvalue()
@ -1644,7 +1644,7 @@ class GetFileByUrl(BaseStdout):
@mock.patch("updateHostsFile.urlopen", side_effect=mock_url_open_decode_fail)
def test_read_url_decode_fail(self, _):
url = b"www.google.com"
self.assertIsNone(get_file_by_url(url))
self.assertIsNone(get_file_by_url(url, delay=0))
expected = "Problem getting file:"
output = sys.stdout.getvalue()

19
updateHostsFile.py
View File

@ -1461,7 +1461,7 @@ def maybe_copy_example_file(file_path):
shutil.copyfile(example_file_path, file_path)
def get_file_by_url(url):
def get_file_by_url(url, retries=3, delay=10):
"""
Get a file data located at a particular URL.
@ -1482,12 +1482,17 @@ def get_file_by_url(url):
format we have to encode or decode data before parsing it to UTF-8.
"""
try:
with urlopen(url) as f:
soup = BeautifulSoup(f.read(), "lxml").get_text()
return "\n".join(list(map(domain_to_idna, soup.split("\n"))))
except Exception:
print("Problem getting file: ", url)
while retries:
try:
with urlopen(url) as f:
soup = BeautifulSoup(f.read(), "lxml").get_text()
return "\n".join(list(map(domain_to_idna, soup.split("\n"))))
except Exception as e:
if 'failure in name resolution' in str(e):
print('No internet connection! Retrying in {} seconds'.format(delay))
time.sleep(delay)
retries -= 1
return print("Problem getting file: ", url)
def write_data(f, data):