Add timeout to image operations in the direct deploy

Currently they may hang when the remote server is not responding.

Change-Id: I1de17fed3b43a3d16795dc614ce76e2cfe1faca0
This commit is contained in:
Dmitry Tantsur 2020-10-22 13:16:47 +02:00
parent 219d72543c
commit fe37fb6d5d
4 changed files with 93 additions and 25 deletions

View File

@ -98,7 +98,8 @@ class HttpImageService(BaseImageService):
verify = CONF.webserver_verify_ca
try:
response = requests.head(image_href, verify=verify)
response = requests.head(image_href, verify=verify,
timeout=CONF.webserver_connection_timeout)
if response.status_code != http_client.OK:
raise exception.ImageRefValidationFailed(
image_href=output_url,
@ -130,8 +131,8 @@ class HttpImageService(BaseImageService):
verify = CONF.webserver_verify_ca
try:
response = requests.get(image_href, stream=True,
verify=verify)
response = requests.get(image_href, stream=True, verify=verify,
timeout=CONF.webserver_connection_timeout)
if response.status_code != http_client.OK:
raise exception.ImageRefValidationFailed(
image_href=image_href,

View File

@ -362,7 +362,7 @@ utils_opts = [
'dir.')),
]
cert_verify_opts = [
webserver_opts = [
cfg.StrOpt('webserver_verify_ca',
default='True',
mutable=True,
@ -380,6 +380,10 @@ cert_verify_opts = [
'is set to True i.e the certificates present in the '
'standard path are used for SSL verification.'
'Defaults to True.')),
cfg.IntOpt('webserver_connection_timeout',
default=60,
help=_('Connection timeout when accessing remote web servers '
'with images.')),
]
@ -396,4 +400,4 @@ def register_opts(conf):
conf.register_opts(portgroup_opts)
conf.register_opts(service_opts)
conf.register_opts(utils_opts)
conf.register_opts(cert_verify_opts)
conf.register_opts(webserver_opts)

View File

@ -43,7 +43,8 @@ class HttpImageServiceTestCase(base.TestCase):
response.status_code = http_client.OK
self.service.validate_href(self.href)
path_mock.assert_not_called()
head_mock.assert_called_once_with(self.href, verify=True)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
@ -60,7 +61,8 @@ class HttpImageServiceTestCase(base.TestCase):
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=False)
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
@ -76,7 +78,8 @@ class HttpImageServiceTestCase(base.TestCase):
head_mock.side_effect = requests.ConnectionError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify=False)
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
@ -88,7 +91,8 @@ class HttpImageServiceTestCase(base.TestCase):
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=True)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
@ -105,7 +109,8 @@ class HttpImageServiceTestCase(base.TestCase):
head_mock.side_effect = requests.ConnectionError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify=True)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
@ -118,7 +123,26 @@ class HttpImageServiceTestCase(base.TestCase):
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path')
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_custom_timeout(self, head_mock):
cfg.CONF.set_override('webserver_connection_timeout', 15)
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=15)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
@ -137,7 +161,8 @@ class HttpImageServiceTestCase(base.TestCase):
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path')
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_error(self, head_mock):
@ -145,7 +170,8 @@ class HttpImageServiceTestCase(base.TestCase):
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path')
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_os_error(self, head_mock):
@ -153,7 +179,8 @@ class HttpImageServiceTestCase(base.TestCase):
head_mock.side_effect = OSError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path')
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_error_with_secret_parameter(self, head_mock):
@ -165,7 +192,8 @@ class HttpImageServiceTestCase(base.TestCase):
True)
self.assertIn('secreturl', str(e))
self.assertNotIn(self.href, str(e))
head_mock.assert_called_once_with(self.href, verify=False)
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def _test_show(self, head_mock, mtime, mtime_date):
@ -175,7 +203,8 @@ class HttpImageServiceTestCase(base.TestCase):
'Last-Modified': mtime
}
result = self.service.show(self.href)
head_mock.assert_called_once_with(self.href, verify=True)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
self.assertEqual({'size': 100, 'updated_at': mtime_date,
'properties': {}}, result)
@ -197,7 +226,8 @@ class HttpImageServiceTestCase(base.TestCase):
head_mock.return_value.headers = {}
self.assertRaises(exception.ImageRefValidationFailed,
self.service.show, self.href)
head_mock.assert_called_with(self.href, verify=True)
head_mock.assert_called_with(self.href, verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -213,7 +243,8 @@ class HttpImageServiceTestCase(base.TestCase):
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True)
verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -230,7 +261,8 @@ class HttpImageServiceTestCase(base.TestCase):
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=False)
verify=False,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -247,7 +279,8 @@ class HttpImageServiceTestCase(base.TestCase):
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True)
verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -264,7 +297,8 @@ class HttpImageServiceTestCase(base.TestCase):
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path')
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -289,7 +323,8 @@ class HttpImageServiceTestCase(base.TestCase):
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=False)
verify=False,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -305,7 +340,8 @@ class HttpImageServiceTestCase(base.TestCase):
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path')
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -320,7 +356,8 @@ class HttpImageServiceTestCase(base.TestCase):
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path')
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
@ -335,7 +372,26 @@ class HttpImageServiceTestCase(base.TestCase):
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path')
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_custom_timeout(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_connection_timeout', 15)
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True,
timeout=15)
class FileImageServiceTestCase(base.TestCase):

View File

@ -0,0 +1,7 @@
---
fixes:
- |
Adds timeout to HTTP image validation and downloading operations, so that
the ``direct`` deploy does not hang when the remote server is not
responsive. The default timeout is 60 seconds and can be changed via the
new ``webserver_connection_timeout`` option.